MATHEMATICS MIDDLE SCHOOL

12) I can run 3.6 miles in 30
minutes. How far can I run in
1.5 hours?

Answers

Answer 1
Answer: 1.5 hours=90 minutes

Because 90 minutes/ 30 minutes is 3, multiply 3.6 miles by 3 and get 10.8 miles as your final answer

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2 cm= 150 milesIf the distance on a Texas map from San Marcos to Austin is 3.8 centimeters, what is the actual distance between these two cities?

A) 275
B) 270
C) 280
D 285

Answers

The answer is 270 found out by google calculator.

Alexandra Ran 2 7/10 miles on Monday. She ran twice as far on Tuesday. How far did Alexandra run in all on those days?

Answers

8 1/10 miles in total and nice pika :)

A number times eight is equal to forty-five

Answers

n*8=45
Thats the answer in word form
x*8=45
Do inverse operation
45/8 = x 

x= 5.625  =  5 5/8
Then check

5.625 * 8 = 45 

Find the axis of symmetry and the vertex of the graph of f(x) = -5x^2 +20x -9.

Answers

Answer:

Axis of Symmetry:

x=2

Vertex:

(2,11)

Step-by-step explanation:

Finding the derivative:

f'(x)=-10x+20

Setting the slope equal to zero:

-10x+20=0      x-2=0    x=2

Finding vertex:

f(2)=-5*(2)^2+20*2-9

=-20+40-9=20-9=11

(2,11)

I/5+9=17
two step equations

Answers

Answer:

i = 40

Step-by-step explanation:

i/5 + 9 = 17

i/5 = 8

i = 40

So, the answer is i = 40
I = 40
This is the answer

Maria has five more than twice as many hats as Beth. Together they have 26 hats. How many hats does Maria have?

Answers

Maria has 19 hats.

Calculation of number of hats:

Here we assume

b=beth

m=maria

Now the equation should be

2b+5=m

b+m=26

here we put m equation

So,

b + 2b + 5 = 26

3b = 21

b = 7

So, the hats should be = 26 - 7 = 19

Learn more about the twice here: brainly.com/question/24589864
Maria has 19 hats.

b=beth
m=maria
Equations: 2b+5=m
                  b+m=26

plug in 2b+5 for m in equation 2: b+2b+5=26
add like terms: 3b+5=26
subtract 5 from both sides: 3b=21
Divide 3 from both sides: b=7
now plug in 7 for b: 7+m=26
subtract 7 from both sides: m=19
m=Maria
therefore Maria has 19 hats
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