Answer:
Yes
Step-by-step explanation:
3+5 is 8 and 6+2 is also 8. You can draw 3 apples with 5 other apples, and count that there are 8 of them and draw 6 apples with 2 other apples that make up 8 apples. Or you can rearrange the apples to be 5 and 3 and 6 and 2.
If the alternative hypothesis of an experiment is "The true mean height of children is less than 60 inches," what is the null hypothesis?
if correct will give brainliest!!
Answer:
Null Hypothesis : The true mean height of children is more than 60 inches.
Step-by-step explanation: Null Hypothesis is defined as a hypothesis that there is no significant difference between the observed and sampled mean.
So, if alternative hypothesis is " the true mean height of children is less than 60 inches" which denotes there is significant difference between sampled and observed mean heights so null hypothesis is taken as " true mean height of children is more than 60 inches"
In right triangle QRS,the measure of an angle R is 90. Which ratio represents tan Q
tan(Q) = RS/RQ
Step-by-step explanation:The mnemonic SOH CAH TOA reminds you that ...
... Tan = Opposite/Adjacent
The side opposite angle Q is RS. The side adjacent is RQ. (QS is the hypotenuse, which does not come into play in the tangent function.)
Then ...
... tan(Q) = Opposite/Adjacent = RS/RQ
In right triangle QRS, with angle R being 90 degrees, tan Q is represented by the length of the side opposite to angle Q divided by the length of the side adjacent to Q which tan Q = SR/ QR.
In right triangle QRS, with angle R being 90 degrees, the ratio that represents tan Q is the length of the opposite side to angle Q divided by the length of the adjacent side.
In trigonometry, the tangent (tan) of an angle in a right triangle is a ratio of the length of the side opposite to the angle to the length of the side adjacent to the angle.
Therefore, if we label the sides opposite and adjacent to angle Q as opposite and adjacent respectively, the formula for tan Q would be:
tan Q = opposite/adjacent
= SR/QR
For example, if a right triangle has sides of lengths 3, 4, and 5, with the side lengths of 3 and 4 being adjacent to and opposite angle Q respectively, the tan Q would be calculated as 4/3.
What is the error due to using linear interpolation to estimate the value of sinxsinx at x = \pi/3? your answer should have at least three significant figures, accurate to within 0.1%. (e.g., 1.23 and 3.33e-8 both have three significant figures.)?
The actual value of sin(π/3) is (√3)/2 ≈ 0.86602540.
If the sine function is approximated by y=x (no error at x = 0), then the error at x=π/3 is ...
... x -sin(x) @ x=π/3
... π/3 -(√3)/2 ≈ 0.18117215 ≈ 0.1812
You know right away this is a bad approximation, because the approximate value is π/3 ≈ 1.04719755, a value greater than 1. The range of the sine function is [-1, 1] so there will be no values greater than 1.
___
If the sine function is approximated by y=(x+1-π/4)/√2 (no error at x=π/4), then the error at x=π/3 is ...
... (x+1-π/4)/√2 -sin(x) @ x=π/3
... (π/12 +1)/√2 -(√3)/2 ≈ 0.026201500 ≈ 0.02620
Therefore, the error due to linear interpolation to estimate the value of [tex]\( \sin\left(\frac{\pi}{3}\right) \)[/tex] is approximately [tex]\( 29.59 \% \).[/tex]
To estimate the error due to linear interpolation for [tex]\( \sin(x) \)[/tex] at [tex]\( x = \frac{\pi}{3} \)[/tex], we need to compare the actual value of [tex]\( \sin\left(\frac{\pi}{3}\right) \)[/tex] with the value obtained through linear interpolation.
The actual value of [tex]\( \sin\left(\frac{\pi}{3}\right) \)[/tex] is [tex]\( \frac{\sqrt{3}}{2} \)[/tex], which is approximately [tex]\( 0.8660 \)[/tex] .
For linear interpolation, we typically use two nearby points to estimate the value of a function at an intermediate point. Let's consider the points [tex]\( (\frac{\pi}{4}, \sin(\frac{\pi}{4})) \) and \( (\frac{\pi}{2}, \sin(\frac{\pi}{2})) \)[/tex], which are [tex]\( \left(\frac{\pi}{4}, \frac{\sqrt{2}}{2}\right) \) and \( \left(\frac{\pi}{2}, 1\right) \)[/tex], respectively.
Now, we'll use linear interpolation to estimate [tex]\( \sin\left(\frac{\pi}{3}\right) \):[/tex]
[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx \sin\left(\frac{\pi}{4}\right) + \left(\frac{\pi}{3} - \frac{\pi}{4}\right) \cdot \frac{\sin\left(\frac{\pi}{2}\right) - \sin\left(\frac{\pi}{4}\right)}{\frac{\pi}{2} - \frac{\pi}{4}} \][/tex]
[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx \frac{\sqrt{2}}{2} + \left(\frac{\pi}{3} - \frac{\pi}{4}\right) \cdot \frac{1 - \frac{\sqrt{2}}{2}}{\frac{\pi}{2} - \frac{\pi}{4}} \][/tex]
[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx \frac{\sqrt{2}}{2} + \left(\frac{\pi}{3} - \frac{\pi}{4}\right) \cdot \frac{1 - \frac{\sqrt{2}}{2}}{\frac{\pi}{4}} \][/tex]
[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx \frac{\sqrt{2}}{2} + \left(\frac{\pi}{3} - \frac{\pi}{4}\right) \cdot \frac{1 - \frac{\sqrt{2}}{2}}{\frac{\pi}{4}} \][/tex]
[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx \frac{\sqrt{2}}{2} + \left(\frac{\pi}{3} - \frac{\pi}{4}\right) \cdot \frac{1 - \frac{\sqrt{2}}{2}}{\frac{\pi}{4}} \][/tex]
[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx 0.7071 + \left(\frac{\pi}{3} - 0.7854\right) \cdot \frac{1 - 0.7071}{0.7854} \][/tex]
[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx 0.7071 + (0.5236 - 0.7854) \cdot \frac{0.2929}{0.7854} \][/tex]
[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx 0.7071 + (-0.2618) \cdot 0.3732 \][/tex]
[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx 0.7071 - 0.0977 \][/tex]
[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx 0.6094 \][/tex]
Now, we can find the error:
[tex]\[ \text{Error} = \left| \frac{\text{Actual value} - \text{Interpolated value}}{\text{Actual value}} \right| \times 100 \% \][/tex]
[tex]\[ \text{Error} = \left| \frac{0.8660 - 0.6094}{0.8660} \right| \times 100 \% \][/tex]
[tex]\[ \text{Error} = \left| \frac{0.2566}{0.8660} \right| \times 100 \% \][/tex]
[tex]\[ \text{Error} = 0.2959 \times 100 \% \][/tex]
[tex]\[ \text{Error} = 29.59 \% \][/tex]
Together, Kyle and Tyler traveled 425 miles to the beach. If Kyle traveled 240 miles, how far did Tyler travel? A) 2x = 425 B) x + 240 = 425 C) x − 240 = 425 D) x − 425 = 240
Answer:
b.) and Kyle traveled 185 miles
Step-by-step explanation:
x+240=425
-240 -240
x=185
The question is about simple subtraction in mathematics. Given that Kyle and Tyler together traveled 425 miles and Kyle traveled 240 miles, we use subtraction to find out that Tyler traveled 185 miles.
Explanation:This is a classic problem of simple subtraction in mathematics. Given, Kyle and Tyler together traveled 425 miles. Now, if Kyle traveled 240 miles, Tyler must have covered the remaining distance. So, to find out how far Tyler traveled, subtract the distance that Kyle traveled from the total distance. This is represented by the equation (option B) x + 240 = 425, where x represents the distance that Tyler traveled. Solving this equation for x will give you the answer.
Setup the equation: x + 240 = 425
Subtract 240 from both sides: x = 425 - 240
This results in x = 185, meaning Tyler traveled 185 miles.
Learn more about Distance calculation here:https://brainly.com/question/34212393#SPJ2Are these steps correct let me know
The first step is correct, because you changed the order of two terms in an addition, and the property [tex] a+b=b+a [/tex] is indeed called commutative property of addition.
In the second step, you do the same, but with multiplication: you use [tex] (6x)\cdot y = y \cdot (6x) [/tex]. This means that you're using the commutative property again, except for multiplication. So, the answer should be "commutative property of multiplication.
Finally, the third step is correct, because you're distributing the multiplication by 3 to both terms in the parenthesis, and this is called distributive property: it states that
[tex] a(b+c)=ab+ac [/tex]
Find the constant of proportionality for the graph and write in the form y = kx. A) y = 1 7 x B) y = 5x C) y = 7x D) y = 35x
Find the x and y for each dot:
5,35
10,70
15,105
etc.
Divide the Y by the X:
35 / 5 = 7
70 / 10 = 7
etc.
The answer would be C) y = 7x
Answer:
Option C is correct
[tex]y = 7x[/tex]
Step-by-step explanation:
Direct variation states that:
[tex]y \propto x[/tex] ......[1]
then, the equation is in the form of:
[tex]y=kx[/tex], where k is the constant of variation
From the given graph we have points in the form of (x, y) i.e,
(0, 0), (5, 35), (10, 70), (15, 105), (20, 140), (25, 175) and (30, 210)
Substitute any points i.e (5, 35) in [1] we have;
[tex]35 = 5k[/tex]
Divide both sides by 5 we have;
7 = k
or
k = 7
then;
[tex]y = 7x[/tex]
Therefore, the constant of proportionality for the graph is, 7 and its form is, [tex]y = 7x[/tex]
Triangles △ABC and △DFG are similar. The lengths of the two corresponding sides are 1.4m , and 56 cm. What is the ratio of the perimeters of these triangles ?
5/2
Step-by-step explanation:The ratio of perimeters is the same as the ratio of corresponding sides:
... (140 cm)/(56 cm) = 5/2
Answer:
5:2
Step-by-step explanation:
We have been given that triangles △ABC and △DFG are similar. The lengths of the two corresponding sides are 1.4 m and 56 cm.
Since both triangles are similar, therefore all corresponding sides will have same proportion.
Let us find proportion of corresponding sides of both triangles.
1 meter = 100 centimeter
1.4 meter = 1.4* 100 centimeters = 140 centimeters.
[tex]\frac{\text{Side of triangle ABC}}{\text{Side of triangle DFG}}=\frac{140}{56}[/tex]
[tex]\frac{\text{Side of triangle ABC}}{\text{Side of triangle DFG}}=\frac{5}{2}[/tex]
The ratio of sides of △ABC to sides of△DFG is 5:2.
Since perimeter of a triangle is sum of lengths of three sides of the triangle and all sides of both triangle have the ratio 5:2, therefore, their perimeters will be in same ratio, that is 5:2.
Residents of three counties were polled to find the percentage of residents who are Republican or Democrat. Find the following relative frequencies to the nearest tenth of a percent.
Answer:
Republican residents of County 1:
10.1 %
Democratic residents of County 1:
16.5 %
Total Republican residents:
58.9 %
Total Democratic residents:
41.1 %
Step-by-step explanation:
Answer:
Question 1)
Republican residents of County 1: (10.1)
Question 2)
Democratic residents of County 1: (16.5)
Question 3)
Total Republican residents: (58.9)
Question 4)
Total Democratic residents: (41.1)
The total cost for Sophia to build b birdhouses is represented by the function f(b)=3.5b+24.
What does the value 3.5 represent in this situation?
The total cost to build b birdhouses is $3.50.
The initial cost is $3.50.
For each birdhouse built, the total cost increases by $3.50.
For each birdhouse built, the total cost decreases by $3.50.
For each birdhouse built, the total cost increases by $3.50.
Step-by-step explanation:The number 3.5 multiplies b, so when b increases by 1, f(b) increases by 3.5. Making 1 more birdhouse increases the total cost by $3.50.
Answer: For each birdhouse built, the total cost increases by $3.50.
Step-by-step explanation:
Given: The total cost for Sophia to build b birdhouses is represented by the function [tex]f(b)=3.5b+24[/tex]
We can see in the function 3.5 is multiplied to b, so when b increases , f(b) increases by 3.5.
[tex]f(1)=3.5(1)+24=3.5+24=27.5[/tex]
[tex]f(2)=3.5(2)+24=7+24=31[/tex]
[tex]f(3)=3.5(3)+24=10.5+24=34.5[/tex]
and [tex]f(2)-f(1)=f(3)-f(2)=3.5[/tex]
Therefore, the value of 3.5 represents that for each birdhouse built, the total cost increases by $3.50.
There are 17 students participating in a spelling bee. how many ways can the students who go first and second be chosen?
To determine the number of ways to choose two students to go first and second in a group of 17 students, we use permutations, resulting in a total of 17 * 16 = 272 ways.
The question inquires about the number of ways two students can be chosen from a group of 17 to go first and second in a spelling bee, which can be solved using combinatorics.
To choose the first student, we have 17 options. After choosing the first student, we have 16 remaining students to choose from for the second student. Therefore, the total number of ways to choose students for these two positions is the product of these two numbers. This scenario calls for a permutation calculation since the order in which we select the students matters.
The formula is n!/(n-r)!, where n is the total number of items to pick from, and r is the number we are picking. For our case, n = 17 and r = 2.
Total number of ways (permutations) = 17 * 16 = 272 ways.
math help 20 points
help
Answer:
1. x =8
2. x=9
Step-by-step explanation:
Since these figures are parallelograms, the opposite sides are equal.
1. 6 = 2x-10
Add 10 to each side
6+10 = 2x-10+10
16 = 2x
Divide each side by 2
16/2 = 2x/2
8 =x
2. x+14 =23
Subtract 14 from each side
x+14-14 = 23-14
x = 9
WILL MARK BRAINLIEST
Evaluate each expression for g = -7 and h = 3 and match it to its value
Values:
a. -2
b.:4
c. 46
d: 10
e: -10
f: -21
Expressions:
a: g + h
b: g - h
c: h - g
d: gh
e: g + h ^2
f: g^2 - h
Answer:
g + h = -4
g - h = -10
h -g = 10
gh = -21
g+ h^2 = 2
g^2 -h = 46
Step-by-step explanation:
We know g = -7 and h = 3
g + h = -7 +3 = -4
g - h = -7 - 3 = -10
h -g = 3 --7 = 3+7 = 10
gh = (-7) * 3 = -21
g+ h^2 = -7 + (3)^2 = -7+9 = 2
g^2 -h = (-7)^2 -3 = 49 -3 = 46
There are 90 sixth graders at Wilson Middle School. Only 50% of the sixth graders will attend the morning assembly. How many sixth graders will be at the morning assembly?
Answer: 45
Step-by-step explanation:
Divide 90 by 2 and you will the the answer of 45.
In parallelogram ABCD , diagonals AC¯¯¯¯¯ and BD¯¯¯¯¯ intersect at point E, AE=x2−16 , and CE=6x . What is AC ?
The answer is 96.
Answer:
The answer is 96 when X= 8
Step-by-step explanation:
We have given that :
AE= [tex]x^2-16[/tex] and CE=[tex]6x[/tex]
where AE and CE are the diagonals of the paralleogram
The diagonals of parallelogram bisect each other therefore,
[tex]x^2-16 = 6x[/tex]
⇒ [tex]x^2-6x-16=0[/tex]
factors are (x+2)(x-8)=0
setting to each factor 0 the value of x= -2 or x= 8
therefore, two values of AC is
X= -2 ,AC= 2([tex]x^2-16[/tex])=2(-12)=-24
X= 8 ,AC= 2([tex]x^2-16[/tex])=2(48)=96
The answer is 96 when X= 8
The expression once The left side of an equation is shown below. 3(x+1)+9 if the equation has no solution which expression can be written in the box on the other side of the equation
A. 3(x+4)
B. 2(x+6)+x
C. 4(x-3)-x
D. 3(x+1)+9
C. 4(x-3)-x
Step-by-step explanation:All of the given expressions are equivalent to 3x+12 except selection C. Using that in your equation makes it be ...
... 3(x +1) +9 = 4(x -3) -x
... 3x +12 = 3x -12
... 12 = -12 . . . . . false
There is no value of x that will make this true, hence NO SOLUTION.
_____
Comment on the other choices
3x+12 = 3x+12 has an infinite number of solutions, as any value of x will make this true.
c
BECAUSE I SAID SO HUH YOU GOTTA PROBLEMO??
Figure RHOM is a rhombus. and are the diagonals of the rhombus, as well as angle bisectors of the vertex angles, and they create four isosceles triangles: HOM, MHR, RHO, and OMR. What is true about MSR? It must be acute. It must be a right angle. It must be equal to MRH. It must be equal to RMS.
Answer:
∠MSR is right angle
Step-by-step explanation:
It is given that RHOM is a Rhombus
Also ΔHOM, ΔMHR, ΔRHO and ΔOMR are isosceles triangles
Let us take ΔMSR and ΔRSH
∠MRS =∠HRS ( since it is given that the diagonal RO bisects ∠R)
∠RMS =∠RHS ( since Δ MRH is isosceles triangle )
RS = RS ( common side )
By AAS congruency rule ΔMSR ≅ ΔHSR
so we have
∠MSR=∠RSH ( corresponding parts of congruent triangles are congruent)
also we have
∠MSR +∠RSH =180° ( supplementary angles)
∠MSR +∠MSR=180° ( since ∠MSR=∠RSH)
2∠MSR= 180°
∠MSR =90°
Hence ∠MSR is right angle
Answer:
It must be a right angle.
Step-by-step explanation:
The figure attached shows the rhombus RHOM with RO and HM as diagonals and are the angle bisectors of the vertex angles.
Let S be the point where the diagonals RO and HM intersects each other.
ΔHOM, ΔMHR, ΔRHO, ΔOMR are four isosceles triangles in the given rhombus.
Since, Diagonals of a rhombus bisect each other at right angle.
Therefore, we have ∠MSR= 90°
That is, ∠MSR is a right angle.
Linda is on her way home in her car. She has driven 36 miles so far, which is three-fourths of the way home. What is the total length of her drive?
Answer:
The Answer is 48 miles.
Step-by-step explanation:
Linda has driven 36 miles home and that is 3/4 of the way home. If you divide 36 by 3 equals 12 miles per 1/4 drive. Multiply 12x4 and the answer is 48.
Hope that helps!
Rhombus ADEF is inscribed in △ABC such that the vertices D, E, and F lie on the sides AB , BC , and AC respectively. Find the side of the rhombus if AB=7 cm, BC=5 cm, and AC=8 cm.
3 11/15 cm
Step-by-step explanation:AE is the angle bisector of ∠A, so divides the sides of the triangle into a proportion:
... BE:CE = BA:CA = 7:8
Then ...
... BE:BC = 7 : (7+8) = 7:15
ΔDBE ~ ΔABC, so DE = 7/15 × AC
... DE = 7/15 × 8 cm = (56/15) cm
... DE = 3 11/15 cm
To find the side of the inscribed rhombus, we can use the Pythagorean theorem and the properties of inscribed rhombuses.
Explanation:To find the side of the rhombus, we need to understand the properties of inscribed rhombuses. In an inscribed rhombus, the diagonals are perpendicular bisectors of each other.
Let's label the side of the rhombus as 's'.
Using the given information, we can see that AB and AC are the diagonals of the rhombus.
Since AB = 7 cm and AC = 8 cm, we know that the diagonals bisect each other and form right angles.
Therefore, we can use the Pythagorean theorem to find the side of the rhombus:
s^2 = (AB/2)^2 + (AC/2)^2
s^2 = (7/2)^2 + (8/2)^2
s^2 = (49/4) + (64/4)
s^2 = (113/4)
s = sqrt(113/4)
At the zoo the polar bears are fed 7/9 bucket of fish a day. The penguins are fed 4/7 that amount. What fraction are the penguins fed?
Answer: They are fed 4/9 of what the polar bears are fed.
Step-by-step explanation:
7/9*4/7=
1/9*4/1=4/9
The 7's get cancelled out.
The penguins at the zoo are fed 4/9 bucket of fish a day. This fraction has been calculated by multiplying the amount of food the polar bears get (7/9 bucket) by 4/7 as specified in the problem.
Explanation:To find out how much the penguins are fed, we first understand the given units involving the polar bears and penguins. The polar bears are fed 7/9 bucket of fish a day, and the penguins are fed 4/7 that amount. Therefore, to calculate the amount the penguins are fed, we multiply the amount the polar bears are fed by 4/7.
We get this by performing the calculation (7/9) * (4/7). The sevens cancel out, leaving us 4/9, which is the fraction of the bucket of fish that the penguins are fed each day.
Learn more about Fraction calculations here:https://brainly.com/question/29633725
#SPJ2
Can someone help me figure out the answer?
Answer:
8763
Step-by-step explanation:
Let x represent the number of students the college had last year. Then this year's enrollment is ...
... x - 3%·x = 8500
... x(1 - 0.03) = 8500 . . . . . collect terms
... x = 8500/0.97 ≈ 8762.89 . . . . divide by the coefficient of x
Enrollment last year was about 8763.
_____
Of course, you know 3% = 3/100 = 0.03.
Elizabeth brought a box of donuts to share. There are two-dozen (24) donuts in the box, all identical in size, shape, and color. Three are jelly-filled, 8 are lemon-filled, and 13 are custard-filled. You randomly select one donut, eat it, and select another donut. Find the probability of selecting two jelly-filled donuts in a row.
Answer:
1/92
Step-by-step explanation:
There are C(3, 2) = 3 ways to select 2 jelly-filled donuts from the 3 in the box. There are C(24, 2) = 276 ways to select 2 donuts from the box.
The probability that you will select 2 jelly-filled donuts is ...
... 3/276 = 1/92
_____
C(n, k) = n!/(k!(n-k)!)
C(3, 2) = (3·2)/2 = 3
C(24, 2) = (24·23)/2 = 276
the graph of a square root function has a domain of (0, infinify ) and range of [1, infinity) explain how the given range of the function can help you to the maximum of minimum y-value of the function? HELP
The range is [minimum y-value, maximum y-value), so the range expression tells you directly what those values are.
For the function described, with range [1, ∞), ...
... minimum y-value = 1
... maximum y-value = infinity
Let D={6,9,11}, E={6,8,9,10} and F={5,7,8,9,11}
List the elements in the set D U E.
Answer:
D U E = { 6,8,9,10,11}
Step-by-step explanation:
U stands for union, which is join the sets together
D U E = { 6,8,9,10,11}
What is 9.36•10~4 in standard form
[tex]9.36\cdot10^4=9.36\cdot10,000=93,600[/tex]
Using graph paper, solve the following inequality. Then click on the graph until the correct one is displayed. y ≥ |x - 1|
Answer:
see attached plot for y ≥ |x - 1|
Step-by-step explanation:
Answer:
Graph below. x=1.
Step-by-step explanation:
1) Check the graph below. Take a closer look at the green area. This great Triangle intercepts the y-axis at the point (0,1) since it's an absolute value.
2) Algebraically, turning this function into an equation, since modulus
|x|=0, x=0.
[tex]y\geq |x-1|\\ |x-1|\geq 0\\ x-1\geq 0\\ x-1+1\geq 0+1\\ x\geq 1[/tex]
At a county fair, 9 people out of 1,000 earned a perfect score in a carnival game. What decimal represents the number of people who earned a perfect score?
Answer:
0.009
Step-by-step explanation:
So 9/1000 can be written as 0.009
Answer:
The answer is 0.009.
Step-by-step explanation:
The total number of people from which only 9 earned a perfect score = 1,000.
The number of people who earned a perfect score = 9
The decimal that represents the number of people who earned a perfect score = The number of people who earned a perfect score ÷ The total number of people concerned = 9 ÷ 1,000 = 0.009.
A polynomial function P(x) with rational coefficients has the given roots. Find two additional roots of P(x)=0.
i and 7 + 8i
a) -1,1
b) -i, 7-8i
c)-1, 56i
d) no additional roots are possible
Also if anyone has the answers to the practice and the quick check i'm super behind and I need help ASAP!!
Answer:
B
Step-by-step explanation:
Answer:
Step-by-step explanation:
If a polynomial function P(x) with rational coefficients has a root z. the so is the complex conjugate of z is a root. (In order to see that, take the complex conjugates of the equation P(x)=0, and note that complex conjugates of rational numbers equal to itself.)
Therefore the complex conjugates of the given roots i and 7+8i , are -i and 7-8i is the required answer.
Rohit drove around the city for 3 hours. He traveled a total distance of 75 miles. What was Rohit's average speed?
Answer:
25
Step-by-step explanation:
You must divide 75/3. This is because for every 3 hours, there is a distace of 75 miles. You have to find out his average speed by finding his distance each hour. 75/3 is 25.
Answer: The average speed of Rohit is 25 miles per hour.
Step-by-step explanation: Given that Rohit drove around the city for 3 hours and he traveled a total distance of 75 miles.
We are to find Rohit's average speed.
We know that
[tex]speed =\dfrac{distance}{time}.[/tex]
For the given situation, we have
distance, d = 75 miles and time, t = 3 hours.
So, the average speed of Rohit is given by
[tex]S=\dfrac{d}{t}=\dfrac{75}{3}=25.[/tex]
Thus, the average speed of Rohit is 25 miles per hour.
Help! will give points for brainliest
The ordered pairs model an exponential decay function.
{(−1,30), (0,21), (1,14.7), (2,10.29)}
What is the function equation?
y = 21·0.7^x
Step-by-step explanation:The pair (0, 21) tells you the multiplier is 21. (The exponential factor is 1 for x=0.)
Any adjacent pair of y-values can tell you the common ratio, hence the base of the exponential term. For example, using the y-values associated with x=0 and x=1, we find the base to be ...
... 14.7/21 = 0.7
Then the equation is ...
... y = multiplier · base^x
... y = 21·0.7^x
(04.01 LC)
Of the following sets, which represents a function? (1 point)
Situation A = {student's name, the student's favorite color}
Situation B = {student's name, the student's favorite math teacher}
Select one:
a. Only A
b. Only B
c. Both A and B
d. Neither A nor B
thx
c. Both A and B
Step-by-step explanation:A function is a mapping that maps each element of its domain (student's name) to exactly one element of its co-domain (favorite ...). Assuming student names are unique and the notion of "favorite" is exclusive (can't have two or more "favorites" of the same type), then both A and B describe mappings that are functions.
Answer:
c. Both A and B
Step-by-step explanation:
A function means each input goes to only one output. As long as each student is only entered once, and they only have one favorite color and one favorite math teacher, then A and B are functions.