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3 years ago

How can you solve problems involving equivalent expressions?

1 answer:

5 0

You should first fully understand what an equivalent expression is. This type of expression is an equation that are the same, even though they might look a little different at first glance. When you try to substitute a value to the expression, they will result in the same value at the end.

Happy Studying!

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Mary spent $8 of the $40 that she had. What is this as a fraction?

irakobra [83]

Answer:

8/40 is the correct answer

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4 years ago

Translate the problem into a mathematical sentence, using p as your variable name. do not use spaces in your answer. (if necessa

SCORPION-xisa [38]

If it is 63 in across, and each part is equal, the equation so solve this is: 63=3x
So, you take 63=3x and divide each side by 3
63/3=3x/3
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3 years ago

What is the percent of change if 30 is decreased to 25?

Luden [163]

Answer:

16.67%

Step-by-step explanation:

initial rate=30

final rate =25

decreased rate = 30 - 25= 5

Now,

Decreased % = (5 / 30) * 100%

= 16.67%

3 0

3 years ago

Read 2 more answers

Olive's solar powered scooter travels at a rate of 30 miles per hour. What equation can she use to calculate her distance with r

avanturin [10]

S=((u+v)/2)t
S=displacement (distance)
U=initial velocity
V=final velocity
T=time

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4 years ago

Joel has a goal to practice his clarinet for 4 1/2 per week. The list below shows the number of hours Joel has a practiced so fa

MrRissso [65]

0.75 hours more is needed to practice to meet his goal

Solution:

Given that,

Goal per week of Joel = $4\frac{1}{2} = \frac{2 \times 4 + 1}{2} = \frac{9}{2}$

From given,

The list below shows the number of hours Joel has a practiced so far for the week

$Monday = 1\frac{1}{2}\ hours = \frac{3}{2}\ hours$

$Wednesday = 1\frac{1}{4}\ hours = \frac{5}{4}\ hours\\\\Thursday = 1\ hour$

How many more hours does he need to practice this week to meet his goal

Find the difference

Hours needed = Goal per week of Joel - (monday + wednesday + thursday)

$Hours\ needed = \frac{9}{2} - (\frac{3}{2} + \frac{5}{4} + 1)\\\\Hours\ needed = 4.5-(1.5+1.25+1)\\\\Hours\ needed = 4.5 - 3.75 = 0.75\\\\Hours\ needed = 0.75 = \frac{3}{4}$

Thus 0.75 hours more is needed to practice to meet his goal

5 0

4 years ago