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2 years ago

6

help At 1:00 P.M. the water level of a pool is 13 inches At 1:30 P.M. the water level is 18 inches At 2:30 the water level is 28

inches What is the constant rate of change ? answer now

1 answer:

mamaluj [8]2 years ago

7 0

The answer is 5 . because if you count the # it will go to 28

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Your friends piano lesson lasts 15 minutes longer than your piano lesson. You have 6 lessons per month and your friend has 4 les

hichkok12 [17]

Answer:

45 minutes

Step-by-step explanation:

Given:

Your friends piano lesson lasts 15 minutes longer than your piano lesson.

You have 6 lessons per month and your friend has 4 lessons per month.

At the end of the month, your time spent at piano lessons is the same as your friends time.

Question asked:

How may minutes is your friends piano lesson ?

Solution:

Let your piano lesson in minutes = $x$

Then your friend's piano lesson will be = $x+15$

As you have 6 lessons per month, it contains total minutes:-

1 lesson = $x\ minutes$

6 lessons = $x\times6=6x\ minutes$

As your friend has 4 lessons, it contains total minutes:-

1 lesson = $x+15\ minutes$

4 lessons = $4(x+15)=4x+60\ minutes$

At the end of the month, time spent at piano is same:-

$6x=4x+60\\ \\ Subtracting\ both\ sides\ by\ 4x\\ \\ 6x-4x=4x-4x+60\\ \\ 2x=60\\ \\ Dividing\ both\ sides\ by\ 2\\ \\ \frac{2x}{2} =\frac{60}{2} \\ \\ x=30\ minutes$

Your piano lesson in minutes = $x$ = 30 minutes.

Your friend's piano lesson will be = $x+15$ = 30 + 15 = 45 minutes

Therefore, 45 minutes is your friends piano lesson.

8 0

3 years ago

3(u+5)=6u+30 please help

liq [111]

Answer:

-5

Step-by-step explanation:

3(u+5)=6u+30

3u+15=6u+30

15=3u+30

-15=3u

u=-5

6 0

3 years ago

Read 2 more answers

Angle A is circumscribed about circle O.<br> What is the measure of angle A?

V125BC [204]

Given:

Angle A is circumscribed about circle O.

m∠CDB = 48°

To find:

The measure of angle A.

Solution:

OC and OB are radius of circle O.

AC and AB are tangents of circle O.

The angle between tangent and radius is always 90°.

⇒ m∠OCA = 90° and m∠OBA = 90°

The angle subtended by an arc at the center is double the angle subtended by it at any point on the remaining part of the circle.

⇒ m∠COB = 2 × m∠CDB

⇒ m∠COB = 2 × 48°

⇒ m∠COB = 96°

Sum of all the angles of quadrilateral is 360°.

m∠BAC + m∠OCA + m∠COB + m∠OBA = 360°

m∠BAC + 90° + 96° + 90° = 360°

m∠BAC + 276° = 360°

Subtract 276° from both sides.

m∠BAC = 84°

The measure of ∠A is 84°.

6 0

3 years ago

Read 2 more answers

If I multiply any number by 1 whole, my product will be:

marusya05 [52]

Let a = any number

So, 1 times a = a.

In other words, any number times 1 = any number.

Two samples:

1. 45 x 1 = 45

2. -567 x 1 = -567

Understand?

3 0

3 years ago

Read 2 more answers

Maya wants to build a bookshelf with a top, a bottom, and two shelves inside. She wants the height of the entire bookshelf to be

Leni [432]

Answer:

96

Step-by-step explanation:

if u times 24x4=96

8 0

2 years ago