Answer:
B
Step-by-step explanation:
if a is greater then b and b=7 and A< 8 7.5 is the only one that fits the description
Option B) a = 7.5 is the correct
The question is asking which option is a counterexample to the assertion that if a and b are real numbers with a > b and b = 7, then a ">=_" 8. To find a counterexample, we need an instance where a is greater than b (which is 7), but a is not greater than or equal to 8.
A) a=6.5 cannot be the correct answer because it is not greater than b. B) a = 7.5 is indeed greater than b=7, but it is less than 8 which makes it the correct counterexample. Both C) a= -8.5 and D) a=8.1 are not counterexamples; the former is less than b, and the latter is greater than 8.
Therefore, option B) a = 7.5 is the correct counterexample because it satisfies the condition a > 7 but does not meet the incorrect assertion that a is also ">=_" 8.
When the coordinates (1,1) (7,3) (8,0) and (2,-2) are joined which shape is formed ?
Answer:
A rectangle.
Step-by-step explanation:
To graph the points find their pairs on a graph and leave a mark in so area. Eventually, it'll reveal the shape.
Hope this helps,
Davinia.
John deposited $2,860 in a bank that pays 9% interests, compounded monthly. Find the amount he will have at the end of 3 years?
Answer:
The amount he will have at the end of 3 years is $3742.73
Step-by-step explanation:
* The formula for annual compound interest is:
A = P (1 + r/n)^(nt)
Where:
A = Total money after t years
P = the investment amount (the initial deposited amount)
r = the annual interest rate (decimal)
n = the number of times that interest is compounded per year
t = the number of years the money is invested
∵ P = $2860 ⇒ deposited
∵ r = 9% = 9/100 = 0.09 ⇒ annual rate
∵ n = 12 ⇒ compounded monthly
∵ t = 3 years
∴ A = 2860(1 + 0.09/12)^(12 × 3)
∴ A = 2860(1.0075)^36 = $3742.73
* The amount he will have at the end of 3 years is $3742.73
Answer:
The amount he will have at the end of 3 years = $3742
Step-by-step explanation:
Formula for compound interest
A = P[1 + R/n]^nt
A - Amount
P - Principle amount
R - rate of interest
n - Number of times in which the amount compounded
t - Number of years
To find the amount
Here,
P = $2,860, R = 9% = 0.09
n = 12 and t = 3 years
A = P[1 + R/n]^nt
=2860[1 + 0.09/12]^(12*3)
= 2860[1 + 0.0075]^36 = 3742.7257 ≈ $3742
Which Of the following could not be points on the units circle ?
answer A , that could not be point
Answer:
Options a and c
Step-by-step explanation:
A unit circle is one which has origin as centre and radius as 1.
The equation of the unit circle would be
[tex]x^2+y^2 =1[/tex]
Thus we find that any point satisfying the above equation lies on the unit circle
Let us try the given points one by one
a) [tex](0.8)^2+(-0,6)^2 =1[/tex]. Hence lies on the circle
b) (1,1)
Cannot lie on circle since [tex]1^2+1^2 \neq 1[/tex]
c) [tex](\frac{-2}{3} ,\frac{\sqrt{5} }{3} )\\(\frac{-2}{3})^2+(\frac{\sqrt{5} }{3} )^2 =1[/tex]. Hence lies on the circle
d) [tex](\frac{\sqrt{3} }{2} ,\frac{1}{3} )\\(\frac{\sqrt{3} }{2})^2+(\frac{1}{3} )^2\\\neq 1[/tex]
Hence does not lie on the circle
Only option A,C are right
george works for a garden center where is is paid a salary of 350 per week plus a commission of 6% of the amount of merchandise that he sells. Last week his sales totaled 1,850. What was his gross pay?
Answer: His gross pay is $461.
Step-by-step explanation: George’s gross pay consists of two parts, his salary and his commission. His salary is $350, regardless of how much he sells. His commission is 6% of the $1,850 in sales that he made.
First, calculate the amount of commission = .06 x $1,850 = $111
$350 + $111 = $461
What is the volume of this aquarium?
Answer:
2160 cm³
Step-by-step explanation:
The volume of a rectangular prism is calculated using the formula
V = lbh ( l is length, b is breadth, h is height )
here l = 18, b = 10 and h = 12, hence
V = 18 × 10 × 12 = 2160 cm³
Volume = l × b × h
= 18 × 10 × 12
= 2160cm³
What is the probability that the roll of a six-sided die will be either even or odd?
the probability that the roll of a six-sides die will be either even or odd is 1/2 or 50%
The probability of a six-sided die will be either even or odd is 1/2.
What is the probability?The Probability in mathematics is the possibility of an event in time. In simple words, how many times that incident is happening in any given time interval.
Given:
A die is rolled once.
The sample space = {1, 2, 3, 4, 5, 6}
An even number sample space = {2, 4, 6}
Odd number sample space = {1, 3, 5}
The probability of a six-sided die will be either even or odd,
= 3/6
= 1/2
Therefore, 1/2 is the probability.
To learn more about the probability;
brainly.com/question/11234923
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Find measure a and b
Answer:
162.5
Step-by-step explanation:
subtract 35 away from 180 then divide it by 2 = 162.5
Check the picture below.
recall that a flat-line has 180°.
What is the quotient a-3/7 / 3-a/21
Answer:
-3
Step-by-step explanation:
The given expression is:
[tex]\frac{\frac{a-3}{7} }{\frac{3-a}{21} }[/tex]
We can rewrite this as:
[tex]\frac{a-3}{7}\div \frac{3-a}{21}[/tex]
[tex]\frac{a-3}{7}\times \frac{21}{3-a}[/tex]
Factor -1 out of the first numerator:
[tex]\frac{-(3-a)}{7}\times \frac{21}{3-a}[/tex]
Cancel out the common factors;
[tex]\frac{-1}{1}\times \frac{3}{1}=-3[/tex]
Answer:
-3
Step-by-step explanation:
that's just the way it be.
The rectangle shown is dilated by a scale factor of 4
Answer:
60 cm, 60 cm, 32 cm, 32 cm
Step-by-step explanation:
Multiply each length by the scale factor.
15 cm * 4 = 60 cm
8 cm * 4 = 32 cm
The dilated sides AB and CD will have a length of 60 cm.
The dilated sides AC and BD will have a length of 32 cm.
what is 45=m(25)+b solving for m
Answer:
[tex]\frac{45-b}{25}[/tex]
Step-by-step explanation:
given
45 = 25m + b ( isolate the term in m by subtracting b from both sides )
45 - b = 25m ← divide both sides by 25
[tex]\frac{45-b}{25}[/tex] = m
A right rectangular prism's edge lengths are 9 inches, 9 inches, and 3 1/3 inches. How many unit cubes with edge lengths of 1/2 inch can fit inside the prism?
ANSWER
2160 cubes
EXPLANATION
The given rectangular prism has edge lengths,
9 inches,9inches and 3⅓ inches.
The volume of this rectangular prism is
[tex]V = 9 \times 9 \times \frac{10}{3} [/tex]
[tex]V = 3 \times 9 \times 10 = 270 {in}^{3} [/tex]
A cube with unit edges of length
[tex] \frac{1}{8} [/tex]
has volume.
[tex]v = {( \frac{1}{8}) }^{3} = \frac{1}{8} [/tex]
The number of unit cubes that can go into the prism is
[tex] = \frac{270}{ \frac{1}{8} } = 2160[/tex]
3. Find the volume of the cylinder
4. Find the volume of a cylinder with a diameter of 16mm and a height of 5.7 mm.
Answer:
[tex]3)~v=8491mm^3[/tex]
Step-by-step explanation:
3) volume of cylinder is...
v= πr²h
plug r= 13 and h=16
v=π(13)²(16)v=π(13×13)(16)v=π(169)(16) ← plug π=3.14v=3.14(2704)v=8490.56v=8491mm^3so, your answer is B
------------------------------
hope it helps...
have a great day!!
Chen completed the division problem below.
Answer:
The error is:
He multiplied the dividend by 100 instead of 10
Step-by-step explanation:
∵ 1.926 ÷ 0.9 ⇒ means
1.926 = 1926/1000 ⇒ dividend
0.9 = 9/10 ⇒ divisor
* [tex]\frac{1926}{1000}[/tex] ÷ [tex]\frac{9}{10}[/tex]
[tex]\frac{1926}{1000}[/tex] × [tex]\frac{10}{9}[/tex]
[tex]\frac{1926}{100}[/tex] × [tex]\frac{1}{9}[/tex]
∵ 1926/100 = 19.26 ⇒ dividend
∴ 19.26 ÷ 9 = 1926/100 ÷ 9
19 ÷ 9 = 2 with remainder 1/9
12 ÷ 9 = 1 with remainder 3/9
36 ÷ 9 = 4 no remainder
∴ The quotient is 214/100 = 2.14
Answer:He multiplied the dividend by 100 instead of 10
Step-by-step explanation:
solve for x {please lol}
Answer: 80
Step-by-step explanation:
Lol. So we are trying to find x, yeah?
Whatever 2 angles that are inside the triangle add up to x.
And you know a triangle adds up to 180°
So do 180 - 100 = 80°
So, x = 80°
:)
Answer:
21
Step-by-step explanation:
Christopher made a scaled copy of the following trapezoid. He used a scale factor greater than 1. What could be the length of the side that corresponds with BC
a.) 1/5 units
b.) 4 units
c.)15.5 units
d.)24 units
e.)18 units
Answer:
The correct options are c, d and e.
Step-by-step explanation:
From the given graph it is clear that the length of BC is 5 units.
Christopher made a scaled copy of the following trapezoid.
1. If a the scale factor is less than 1 then the image is smaller than its original figure.
2. If a the scale factor is greater than 1 then the image is larger than its original figure.
It is given that he used a scale factor greater than 1. So, the scaled copy of the following trapezoid is larger than the given trapezoid.
The length of corresponds with BC is greater than 5.
[tex]\frac{1}{5}<5[/tex]
[tex]4<5[/tex]
[tex]15.5>5[/tex]
[tex]24>5[/tex]
[tex]18>5[/tex]
Therefore, the correct options are c, d and e.
i need help, please help me please
Answer:
a. how old are the people living in ______(where you are)?
b. What is the people living in _____ (where you are) favorite color?
c. What is the age of the principals in the schools that are in ____ county?
3. How far do the students at _____ school live from school?
4. Do the students at ___ school enjoy to write with pencils, pens, markers, or crayons the most?
5. What is the age of the math teachers in the schools that are in ____ county?
Step-by-step explanation:
★彡 яαи∂σм qυєѕтισи #2 彡★
ωσятн 30 ρσιитѕ!
SHOW YOUR WORK! WILL MARK BRAINLIEST!
● + ● + ● = 30
● + ○ + ○ = 18
○ - ■ = 2
● + ○ + ■ = ?
Answer: 16
Step-by-step explanation: If 3 black circles equal 30, we can divide that by 3 and get 10. If 1 black circle and 2 white circles equal 18, we can subtract 10 and get left with 2 white circles worth 8, which means a white circle is 4. A white circle minus a square is 2, which means a square is 2. So we put this all together and get 16.
Amelia used a $50 gift card to buy digital music online after playing for 16 songs her balance on the gift card was $30 what was the price of each song assuming all songs cost the same amount
The cost of each song is $1.25.
What is the unitary method?The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
Given that, Amelia used a $50 gift card to buy digital music online after playing for 16 songs her balance on the gift card was $30.
So, the cost of 16 song is 50-30=$20
Now, the cost of each song = 20/16
= 5/4
= $1.25
Therefore, the price of each song is $1.25.
To learn more about the unitary method visit:
brainly.com/question/22056199.
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There are 4 red cards and 8 black cards in a bag. How likely is it that you will randomly draw a blue card?
A. Likely
B. Unlikely
C. Impossible
D. Certain
Answer:
C
Step-by-step explanation:
Since there are no blue cards, the probability that you'd draw one is 0/12, which means that there is no chance you'll draw one.
It is impossible to get blue cards. Then the correct option is C.
What is probability?Its fundamental concept is that someone will nearly surely occur. The proportion of positive events in comparison to the total of occurrences.
Then the probability is given as,
P = (Favorable event) / (Total event)
There are 4 red cards and 8 black cards in a bag.
In the bag, the number of blue cards will be zero.
Thus, it is impossible to get blue cards. Then the correct option is C.
More about the probability link is given below.
https://brainly.com/question/795909
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How would I simplify and solve for X in this trigonometric equation? (Radians)
[tex]cos(x+\pi )^{2} = sinx[/tex]
Answer:
Please, refer to the images below
Step-by-step explanation:
We need to solve for x in the equation
cos (x+ pi) ^2 = sin (x)
cos (x+ pi) = - cos(x)
(-cos (x)) * (-cos (x)) = sin(x)
cos(x) ^2 = sin(x)
We know that
cos(x) ^2 + sin(x) ^2 = 1
cos(x) ^2 = 1 - sin(x) ^2
1 - sin(x) ^2 = sin(x)
sin(x) ^2 + sin (x) -1 = 0
Let A = sin(x)
A^2 + A - 1 = 0
(solutions attached in picture 1)
This means that
x = arcsin(A)
(solutions attached in picture 2)
Consider set x={5,3,1,0} .which value of x makes 15-3x=0 true?
Answer:
x = 5
How?:
15 - 3(5) = 0
15 - (3 × 5) = 0
15 - 15 = 0
Which expression shows this number in expanded form 0.624
If the local hospital has decided to follow the 1:4 nurse-to-patient ratio, how many patients can they treat if they have 120 nurses?
Answer: 480 patients
Step-by-step explanation:
If each nurse can treat for patients and there are 120 nurses, you need to multiply 120 nurses x 4 patients each.
120 x 4 = 480
120 nurses can treat 480 patients.
The base of a triangle measures 8 inches and the area is 136 square inches what is the height of the triangle
Answer:
34 inches
Step-by-step explanation:
Area is base times height time half
Then plug in the values: 136= 0.5 x 8x
Then solve for x
Answer:
4
Step-by-step explanation:
If it look like tihs for your shape it will be 4
Manny has 48 feet of wood. He wants to use all of it to create a border around a garden. The equation 2l+ 2w = 48 can be used to find the length and width of the garden, where l is the length and w is the width of the garden. If Manny makes the garden 15 feet long, how wide should the garden be?
Answer:
2W=9
Step-by-step explanation:
You must first get the Length, which is 15, and multiply it by 2 and you get 30. You then subtract 30 from 48 and get 18. Since the equation has 2W, you have to divide 18 by 2, which gets you the answer 9.
Answer:
width = 9 feet
Step-by-step explanation:
Here we are given that total length of the wood for the garden is 48 feet only.
The length in represented in the equation given below. In geometry we call it Perimeter.
2l+2w=48
Where l is the length of the garden and the w is width of the garden.
Here also given that , if Manny wants the length to be 15 feet, what will be width of the garden.
In order to find this we put the value of l as 15 in 2l+2w=48 and solve for w
Let us see how
2l+2w=48
2(15)+2w=48
30+2w=48
subtracting 30 from both sides
30+2w-30=48-30
2w=18
Dividing both sides by 2 we get
w=9
Hence the width will be 9 feet
A smartphone costs $120. Sales tax is 8%. What is the total cost, including tax?
14m-13m=17 what is m please help me!!!!
Answer:
m = 17Step-by-step explanation:
[tex]14m-13m=17\\\\(14-13)m=17\\\\1m=17\to\boxed{m=17}[/tex]
[tex]\bold{Hey\ there!}\\ \bold{Simplify\ both\sides\ of\ your \ equation} \\ \bold{Like\downarrow} \\ \bold{14m-13m=17} \\ \bullet{\bold{14m+(-13m)=17}} \\ \\ \\ \bold{Combine\ your\ terms}\\ \bold{Like\downarrow}\\ \bold{14m \ \& -13m} \\ \\ \bold{14m+(-13m)=1} \\ \bold{1=17} \\ \\ \bold{1\times17=17}[/tex]
[tex]\boxed{\boxed{\bold{Answer:m=17}}}\checkmark \\ \\ \bold{Good\ luck\ on\ your\ assignment\ \& \ enjoy\ your\ day!} \\ \\ \\ \frak{LoveYourselfFirst:)}[/tex]
At hockey practice, Talia took 35 shots, and made 60% of them. She had hoped to make 25 shots. By how many shots did she fall short of her goal?
Answer:
4 goals short
Step-by-step explanation:
To find how many shots Talia made - multiply the total number of shots (35) by 60% (or 0.60)
35*.60 = 21 shots made
Subtract her goal (25) by the shots actually made (21)
25-21 = 4 shots from her goal
I need help with this problem please
Answer:
The second option.
Step-by-step explanation:
The reasoning behind this is because it is a mixed fraction and the rest aren't.
Hope that helps!
sue has more than 5 cookies inequality
Answer:
s > 5
Step-by-step explanation:
s is the number of cookies Sue has.
Since she has more than 5 cookies, the number of cookies she has is greater than 5.
Hello there! An inequality modeling this could be x > 5.
When setting up this equation, we can use x to model the number of cookies that Sue has.
Remember that these are the symbols we use to represent inequalities:
< - greater than
> - less than
≤ - greater than or equal to
≥ - less than or equal to
Since the number of cookies Sue has is greater than 5 (but not equal to), we use the symbol.
We can represent her having x amount of cookies, which is more than 5, like this: x > 5,
I hope this helps and have a great day! :)