MATHEMATICS MIDDLE SCHOOL

Please help me with this question: Mai is reading a 360 page book. She has already read 270 pages. What percentage of the book has she read?

Answers

Answer 1
Answer:

Answer:

75%

Step-by-step explanation:

270 of 360 can be written as:

270

360

To find percentage, we need to find an equivalent fraction with denominator 100. Multiply both numerator & denominator by 100

270

360

×

100

100

= (

270 × 100

360

) ×

1

100

=

75

100

Therefore, the answer is 75%

If you are using a calculator, simply enter 270÷360×100 which will give you 75 as the answer.
Answer 2
Answer:

Answer:

75%

Step-by-step explanation:

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You earn (4x+12)points after completing x levels of a video game and then lose (2x-5)points. Write an expression that represents that total number of points you have now.
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When I triple my number and add five I get 26 what is my number
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A pair of linear equations is shown below: y = −2x + 3 y = −4x − 1 Which of the following statements best explains the steps to solve the pair of equations graphically? Graph the first equation, which has slope = 3 and y-intercept = −2, graph the second equation, which has slope = −1 and y-intercept = −4, and find the point of intersection of the two lines. Graph the first equation, which has slope = −3 and y-intercept = 2, graph the second equation, which has slope = 1 and y-intercept = 4, and find the point of intersection of the two lines. Graph the first equation, which has slope = −2 and y-intercept = 3, graph the second equation, which has slope = −4 and y-intercept = −1, and find the point of intersection of the two lines. Graph the first equation, which has slope = 2 and y-intercept = −3, graph the second equation, which has slope = 4 and y-intercept = 1, and find the point of intersection of the two lines.

Find two numbers that add up to 180

Answers

There are many combinations of two numbers possible that give the sum as 180. Example, 177+3 = 180,174+6 = 180,177+9 = 180,etc. You can make as many combinations because its very general term for any two number to add upto 180.

Use the following graph of the function f(x) = 3x4 − x3 + 3x2 + x − 3 to answer this question: graph of 3 x to the fourth, minus x cubed, plus 3 x squared, plus x minus 3. What is the average rate of change from x = 0 to x = 1?

Answers

For this case we have the following function:
 f (x) = 3x ^ 4 - x ^ 3 + 3x ^ 2 + x - 3
 By definition we have that the average rate of change is given by:
 AVR = (f(x2)-f(x1))/(x2-x1)
 We evaluate the function for the given interval:
 For x = 0:
 f (0) = 3 (0) ^ 4 - (0) ^ 3 + 3 (0) ^ 2 + (0) - 3f (0) = - 3
 For x = 1:
 f (1) = 3 (1) ^ 4 - (1) ^ 3 + 3 (1) ^ 2 + (1) - 3f (1) = 3
 Substituting values we have:
 AVR = (3-(-3))/(1-0)
 Rewriting we have:
 AVR = (3+3)/(1-0)
 AVR = (6)/(1)
 AVR =6
 Answer:
 the average rate of change from x = 0 to x = 1 is:
 AVR =6

Answer:

Average rat of change of function is 6 from x = 0 to x = 1.

Step-by-step explanation:

We are given a function:

f(x) = 3x^4 - x^3 + 3x^2 + x - 3

The attached image shows the graph for the given function.

Average rate of change of function =

\text{Average rate of change} = \displaystyle(\delta y)/(\delta x) = (f(b)-f(a))/(b-a)

Now we will evaluate f(1) and f(0).

f(x) = 3x^4 - x^3 + 3x^2 + x - 3\nf(1) = 3(1)^4 - (1)^3 + 3(1)^2 + (1) - 3 = 3\nf(0) = 3(0)^4 - (0)^3 + 3(0)^2 + (0) - 3 = -3

Putting the values, we get,

\text{Average rate of change} = \displaystyle(f(1)-f(0))/(1-0)\n\n= (3-(-3))/(1-0) = (6)/(1) = 6

Thus, the average rat of change of function is 6 from x = 0 to x = 1.

Daniel is three years older than twice his brother's age. Daniel is 17. Fill in the box with the expression that represents the age of Daniel's brother. Let b represent Daniel's brother's age.

Answers

Daniel's age is X
Daniel's brother age is Y

X = 3 + ( 2Y )

Y = ( X - 3 ) / 2

In case of Daniel is 17

then his brother's age is = ( 17 - 3 ) / 2 = 7 years

How many times does 25 go into 10,000

Answers

basically what is 10,000/25
one way to do this is
we know that 100/25=4 so
100 times x=10,000
divide by 100
x=100
100 goes into 10,000, 100 times
so therefor the answer is 4 times 100 which is 400 or


factor since
4/8=1/2 because 1/2 times 4/4=1/2 times 1/1=1/2

so 10,000=2 times 2 times 2 times 2 times 5 times 5 times 5 times 5
25=5 times 5 times 1
10000/25=(2*2*2*2*5*5*5*5)/(5*5)=(2*2*2*2*5*5)/1 times (5*5)/(5*5)=400/1 times 1/1=400
400 times!!!
hope i helped!

(a + 2b + 3c) − (4a + 6b − 5c) is equivalent to:A. −4a − 8b − 2c
B. −4a − 4b + 8c
C. −3a + 8b − 2c
D. −3a − 4b − 2c
E. −3a − 4b + 8c

Answers

(a + 2b + 3c) - (4a + 6b - 5c)= a + 2b + 3c - 4a - 6b + 5c =\n \n= -3a -4b +8c \n \nAnswer : \ E. \ \ -3a- 4b + 8c
= a + 2b + 3c - 4a - 6b + 5c
= ( -3a - 4b + 8c )
Hence the answer is option E

Harriet has 3/4 tank of gas left in her car. if she needs 1/4 tank to go to her friends house and another 1/4 tank to get back home,does she have enough gas? explain your answer

Answers

Harriet has enoughgas to make the trip to her friend's house and back without needing to refuel her car.

What is Fraction?

A fraction represents a part of a whole.

Given that Harriet has 3/4 tank of gas left in her car.

She needs 1/4 tank to go to her friends house and another 1/4 tank to get back home.

We need to check whether she has enough gas for her trip.

Since Harriet has 3/4 of a tank of gas left, she has 1/4 of a tank already used.

She needs another 1/4 of a tank to go to her friend's house and another 1/4 of a tank to get back home.

Altogether, she needs 1/4 + 1/4 = 1/2 of a tank for the round trip.

Hence, Harriet has enoughgas to make the trip to her friend's house and back without needing to refuel her car.

To learn more on Fractions click:

brainly.com/question/10354322

#SPJ5
Ok so if you add the two 1/4's you will find how much gas she needs total to complete the trip. So do 1/4 + 1/4 and get 1/2. Next you can see that 3/4 is larger than 1/2, so she has enough gas.
Hope that helps!
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