if you are solving a system of equations and you came to a statement like for equals four, what do you know about the solution to the system?
Answer:
see explanation
Step-by-step explanation:
when solving an equation and the final statement reads
4 = 4
this means that there are an infinite number of solutions to the system
The volume of a sphere is 36π in³. What is the radius of the sphere? Enter your answer in the box. in.
Answer:
3 inches
Step-by-step explanation:
⇒r3=36π×3/4π
or r3=27
Taking cube root of both sides
r=3 inch
1/2 + 1 1/4 less than 2
Answer:
No, it only equals 1 3/4.
Step-by-step explanation:
You first need to break up 1/2. You should know it equals 2/4, so adding 1 1/4 and 2/4, it will equal 1 3/4
What are the roots of this function? f(x) = x2 – 8x + 12 A) {2, 6} B) {8, 12} C) {-3, -4} D) {-4, -4}
Answer:
A.
Step-by-step explanation:
delta = [tex]b^{2} - 4ac = (-8)^{2}-4*1*12 = 64 - 48 = 16[/tex]
[tex]x_{1} = \frac{b-\sqrt{delta}}{2a} = \frac{8+4}{2} = 6[/tex]
[tex]x_{2} = \frac{b+\sqrt{delta}}{2a} = \frac{8-4}{2} = 2[/tex]
What is the written form of the decimal number 0.954?
Answer:
nine hundred fifty-four thousandths
Step-by-step explanation:
If you mean written as in a form in words:
To the first decimal place means tenths because it is out of ten
To the second place, it's hundredths because 100 = 10^2
3rd is 1000, and so on
A fraction (as in two out of five), is expressed in words as "two fifths"
So 954 out of 1000 would be nine hundred fifty-four thousandths
A third-grade gym class has 54 students. The gym teacher divides them into 9 groups. She then divides each group into 2 teams. How many students are on each team?
Answer:
Step-by-step explanation: I would say 3 because when you divide 54 by 9 you get 6. Then when you divide 6 by 2, you get 3. Hope this helps‼ ☺
The number of students gym teacher has putted in each team is, 3
What is the ratio?A ratio in mathematics is a comparison of two or more numbers that shows how big one is in comparison to the other. The dividend or number being divided is referred to as the antecedent, while the divisor or number that is dividing is referred to as the consequent.
Given that,
A third-grade gym class has 54 students
The gym teacher divides them into 9 groups
Then divides each group into 2 teams
The number of students in each team = ?
Number of students in a group = 54/9
= 6 students
Then each group divided into two teams,
Number of students in each team = 6/2
= 3
Hence, the number of students is 3
To know more about Ratio check:
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6.099 round each number to the place of the underlined digit. The underline number is 0
Answer:
6.1
Step-by-step explanation:
If we are rounding at the 0 digit, we look at the next digit, which is 9
9 >= 5 so we need to round the 0 up to 1
6.099 rounds to 6.1
Answer:
6.1 is your answer
Step-by-step explanation:
The underlined digit (the tenth place) is 0. Look at the number in the place value directly right to it (hundredth place). It is a 9. Because 9 is greater than 5, round up.
6.099 rounded to the nearest tenth place is 6.1
~
If 2/3 of the 600 seeds sprouted, how many seeds did not sprout?
By calculating 2/3 of 600, we find that 400 seeds sprouted, which means 200 seeds did not sprout.
Explanation:To determine how many seeds did not sprout, we start by calculating the number of seeds that did sprout. Given that 2/3 of the 600 seeds sprouted, we multiply 600 by 2/3:
600 × (2/3) = 400
So, 400 seeds sprouted. Next, we subtract this number from the total number of seeds to find out how many did not sprout:
600 - 400 = 200 seeds
Therefore, 200 seeds did not sprout.
Distinguish between the situations that can be modeled with a linear function, an exponential functions or neither
Answer:
Examples of linear functions would be relationships that represent a constant rate of change, such as 20 miles per gallon of gas. Exponential functions would be relationships that represent a growth or decay the increases or decreases by an exponential amount, such as a bacterial growth that doubles each hour. Examples of situations that would be neither linear or exponential would be absolute value functions or quadratic functions.
Step-by-step explanation:
Situations, or relationships between data, that can be modeled with a linear function must show a constant increase or decrease in rate. For example, we could control the rate of temperature in a water bath by two degrees every ten minutes. For exponential functions, these can be modeled in situations where there is a significant growth or decay of a material. For instance, the radioactivity of an element will decrease by one-half every year. This would represent an exponential decay. For other types of situations, such as changes in body temperature (absolute value) or the speed of a kayaker (quadratic), these would not be modeled using either linear or exponential functions.
A linear function can model constant rate of change, exponential function can model constant growth or decay, and some situations do not fit into these mathematical models.
Explanation:A linear function can model situations where there is a constant rate of change between two variables. For example, if the cost of a movie ticket increases by $2 for every additional hour of the movie, you can represent this relationship with a linear function.
An exponential function can model situations where there is constant growth or decay. For example, if the value of an investment doubles every year, you can represent this relationship with an exponential function.
There are situations that cannot be modeled with either a linear or exponential function. For example, unpredictable events or situations with multiple complex factors may not fit into these mathematical models.
How do I find the perimeter of the shapes
Answer:Here is the answer
Step-by-step explanation: You first break the shape into two different shapes.Then add them side by side. Determine the length for each side. Then add them together. Add both of the perimeters of the shapes.
if the domain of f(x) = x^2 + 1 is limuted to {0,1,2,3} what is the maximum value of the range?
Answer: 10
Plug in the given x values and see which result is the largest
Plug in x = 0 ---> x^2+1 = 0^2 + 1 = 1
Plug in x = 1 ----> x^2 + 1 = 1^2 + 1 = 2
Plug in x = 2 ----> x^2 + 1 = 2^2 + 1 = 5
Plug in x = 3 ---> x^2 + 1 = 3^2 + 1 = 10
The range is therefore {1, 2, 5, 10} which is just the set of possible outputs.
We see that y = f(x) = 10 is the largest output of the range if the domain is restricted to the set {0, 1, 2, 3}
18 - t/20= -9 what does t equal?
18 - t/20 = -9 what does t equal?
Answer:
t = 540
Step-by-step explanation:
18 - t/20 = -9
Subtract 18 from both sides.
-t/20 = -27
Multiply both sides by -20.
t = 540
Suppose you have a 1/10 chance of winning with a scratch-off lottery ticket. If you buy 3 tickets, what is the probability of winning with all 3
Answer:
0.001
Step-by-step explanation:
We are given that
Suppose you have the probability of winning with a scratch -off lottery ticket,P(A) =[tex]\frac{1}{10}[/tex]
Probability:It is defined as the possibility of an event that is occurred or not.
It is obtained by dividing the number of favourable cases with total number of cases.
The formula of finding out the probability of an event
P(E)=[tex]\frac{Number\;of\;favourable\; cases}{Total\;number\;of\;cases}[/tex]
We have to find the probability of winning 3 lottery
The probability of winning all three tickets,[tex]P(A AA)=P(A)\cdotP(A)\cdotP(A)[/tex]
Therefore, the probability of winning all 3 lottery =[tex]\frac{1}{10}\times \frac{1}{10}\times \frac{1}{10}[/tex]
The probability of winning all three tickets,P(A AA)=[tex]\frac{1}{1000}[/tex]
The probability of winning all three tickets,P(A AA)
=0.001
Answer:0.001
What is answer for # 38 and #39???
Answer:
f(x) + g(x) = 6x^2 + 28x + 36
Step-by-step explanation:
Thirty eight
You begin to solve this by writing it like this [just as you have it].
f(x) = x^2 + 5 Now put g(x) where you see x
f(g(x)) = [g(x)]^2 + 5 Now substitute the right side of g(x) wherever you see g(x)
f(x - 4) = [x - 4]^2 + 5 Expand the brackets
f(x- 4) = x^2 - 8x + 16 + 5
f(x - 4) = x^2 - 8x + 21
=======================
Thirty Nine
f(x) = (x + 4)^2
g(x) = 5(x + 2)^2
Expand f(x)
f(x) = x^2 + 8x + 16
Expand g(x)
g(x) = 5(x^2 + 4x + 4) Remove the bracketsg(x) = 5*x^2 + 5*4x + 5*4 Perform the multiplicationg(x) = 5x^2 + 20x + 20f(x) + g(x) = x^2 + 8x + 16 + 5x^2 + 20x + 20
f(x) + g(x) = 6x^2 + 28x + 36
Evaluate the expression below, -0.25 -(-1/5)+0.2+(-1/4)
Answer:
0.4
Step-by-step explanation:
-1/5 = -2/10 = -0.2, -1/4 = -25/100 = -0.25
-0.25-(-1/5)+0.2+(-1/4) = -0.25+0.2+0.2+0.25 = -0.25+0.25+0.2+0.2 = 0.4
Answer:
0.0016
Step-by-step explanation:
What is the sum of the tens digit and the thousandths digit in the number 102.36148?
Answer:
Step-by-step explanation:
And Answer: The 2 after the 0 is the tens. The 1 is the thousands(before the 0)
Step-by-step explanation:
According to the Doppler effect, if a car with a blowing horn is moving toward you, the pitch you hear will
Answer:
If a car with a blowing horn is moving toward you, the pitch sounds higher than the actual emitted frequency.
Step-by-step explanation:
In figure,
V= speed of wave
U= speed of car
When car moving towards you, then
Car travels a distance in time T = VT
Wave travels a distance in time T = UT
From figure,
change in wavelength (λ') = VT - UT= T(V-U)
Now,
V = λ' f' (f' →frequency observed by you)
f' = V ÷ λ' = [tex]\frac{V}{T(V-U)}[/tex]
We know that
[tex]\frac{1}{T}[/tex] = f
Then,
f' = [tex]\frac{Vf}{V-U}[/tex]
f' = [tex]\frac{f}{1-\frac{U}{V} }[/tex]
Hence, we can say that
frequency increases as source moves toward you.
Answer:
B. Increase
Step-by-step explanation:
The closer together the crests, the higher the frequency (or pitch)
Which expressions are equivalent to (5⋅x)⋅3 ? Drag and drop the equivalent expressions into the box.
3⋅(5⋅x)
5⋅3+x⋅3
5⋅(x⋅3)
15x
5⋅3⋅x⋅3
Answer:
3⋅(5⋅x)
5⋅(x⋅3)
15x
Step-by-step explanation:
As the values are inside the brackets, it does not matter what side the (x3) is on, so 3⋅(5⋅x) is equivalent.
Multiplying the contents of the brackets in the third one (x * 3) by 5 gives the same value as 3 * (x * 5) so 5⋅(x⋅3) is also equivalent.
On multiplying the brackets out:
5 * x = 5x
5x * 3 = 15x
So 15x is also equivalent.
Answer:
B
Step-by-step explanation:
Evaluate the expression when n=-3.
Answer:
[tex]-10[/tex]
Step-by-step explanation:
The given expression is
[tex]n^2+5n-4[/tex]
We want to find the value of this expression when [tex]n=-3[/tex].
We just have to put [tex]-3[/tex] wherever we see [tex]n[/tex] in [tex]n^2+5n-4[/tex].
When [tex]n=-3[/tex] is substituted, we get,
[tex]=(-3)^2+5(-3)-4[/tex]
This will give us,
[tex]=9-15-4[/tex]
We simplify to get,
[tex]=-10[/tex]
HELP!!!!!!!!!!!!!!!!!!!!!!! CAN SOMEONE ANSWER ALL OF THESE.
1. -4 and 3/10 and 4.51010910921... are all rational numbers.
2. Yes 81 is a perfect square because its square root is 9 which is a real number.
3. 5
4. Well the closest perfect square to 52 is 49 and 64. 52 is closer to 49 and the square root of 49 is 7 so the estimated value of the square root of 52 is about 7.
False- every square root is not rational because some aren't perfect squares, meaning the result is a decimal that keeps going forever.
5. (x+6, y-5)
3.3 divide (0.8 - 3) - 0.5
Answer:
-2
Step-by-step explanation:
Hope this helps!
Yana and Amber play a word game using tile letters. Each person takes 7 tiles from a set of tiles. Points are earned by using the chosen letter tiles to make a word. Points are lost when tiles are returned to the set and new tiles are chosen. The table shows the points earned or lost by each girl in their first six turns of the game.
Answer:
A Yana's average number of points is 0.5 points greater than Amber's
Step-by-step explanation:
i added up all of Yana's points = 15
I added up all of Amber's points = 12
then i divided them both by 6 because there is 6 numbers total so then i got
Yana = 2.5 Amber = 2
2.5 - 2 = 0.5 so Yana's average number of points is 0.5 points greater than Amber's
:}
Answer:
A: Yana's average number of points is 0.5 points greater than Amber's
Step-by-step explanation:
I did this on my homework
Paws at play made a total of $1234 grooming 22 dogs. Paws at Play charges $43 to groom each small dog and $75 for each large dog.
a. Write a system of equations that can be used to determine the number of small and large dogs that were groomed.
b. How many large dogs did Paws at Play groom?
Answer:
Answer (a):
s + l = 22 ... (i)
43s + 75l = 1234 ... (ii)
Answer (b)
9 large dogs.
Step-by-step explanation:
Paws at Play made a total of $1234 grooming 22 dogs.
Paws at Play charges $43 to groom each small dog and;
$75 for each large dog.
Let the number of small dogs be 's'
And the number of large dogs be 'l'
A system of equations will be:
s + l = 22 ... (i)
43s + 75l = 1234 ... (ii)
Solving this set of simultaneous equations by elimination, we simply multiply (i) by 43 to get;
43s + 43l = 946 ... (i)
43s + 75l = 1234 ... (ii)
Subtracting (i) from (ii) we get;
32l = 288 , l = [tex]\frac{288}{32}[/tex] = 9
So there are 9 large dogs.
jacie can swim 3/4 of a mile in 3/8 of an hour.how far can she swim in one hour?
Answer:
2 miles
Step-by-step explanation:
We can use ratios to solve this problem
3/4 miles x miles
--------------- = ---------------
3/8 hours 1 hours
Using cross products
3/4 * 1 = 3/8 * x
Multiply by 8/3 to isolate x
3/4 * 8/3 = 3/8*8/3 *x
8/4 = x
2 =x
How many real solutions does this equation have? h² = 37
A) 1 real solution
B) No real solution
C) Infinite number of real solutions
D) 2 real solutions
Answer:
The correct answer is D.
Can y’all help me simplify to the lowest terms I’m a 5th grader so show me the steps plz
Find the solutions of the form x=a,y=0and x=0 ,y=b for the following equations: 2x+5y=10 and 2x+3y=6. is there any common solution?
Answer:
x=0 and y=2
Step-by-step explanation:
We have been given system of equations:
2x+5y=10 (1)
And 2x+3y=6 (2)
Subtract equation (2) from(1) we get:
2y=4
y=2
Now, substitute y=2 in equation(2) we get:
2x+3(2)=6
2x+6=6
2x=0
x=0
Hence, x=0 and y=2
I need help with this question please help
2x−(3x−4)=3x−5. pls solve
Answer:
x=9/4
Step-by-step explanation:
Performing the indicated multiplication, we get
2x - 3x + 4 = 3x - 5
Combining the x terms, we get -4x = -9, so that x = 9/4.
Which equation represents a non-proportional situation? y = 6x y = –2x + 14 y = –3x y = 14x
The equation of proportional situation is y = ax.
Therefore your answer is y = -2x + 14