HELP ASAP! 25 BRAINLY POINTS!

Can you find a number that satisfy the following property?

Morgarella [4.7K]

Answer:

11

Step-by-step explanation:

Let the number be x.

Then by the question,

2x+4 = 3x-7

x=11

3 0

3 years ago

Read 2 more answers

Please solve (a^3 - 2a^2) - (3a^2 - 4a^3).

Wittaler [7]

Hi there! Hopefully this helps!

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<h2>Answer: $5a^{3} - 5a^{2}$ . </h2><h2 /><h2>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</h2><h2 />

| $(a^{3} - 2a^{2}) - (3a^{2} - 4a^{3} )$

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| To find the opposite of $3a^{2} -4a^{3}$ , find the <em>opposite</em> of each term.

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$a^{3} - 2a^{2} - 3a^{2} + 4a^{3}$

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|

|Combine $-2a^{2}$ and $-3a^{2}$ to get $-5a^{2}$ .

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$a^{3} - 5a^{2} + 4a^{3}$

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

|

|Combine $a^{3}$ and $4a^{3}$ to get $5a^{3}$ .

\/

<h2>Answer: $5a^{3} - 5a^{2}$ </h2>

8 0

3 years ago

74/80 as a decimal?????

scZoUnD [109]

The answer is 74/80 = .925 (.93)

8 0

3 years ago

640 miles in 25 hours find the unit rate

liberstina [14]

Hi there, we are going to set up a porportion. 640 miles/25 hours ÷ 25/25. That would equal 25.6 miles/1 hour. Therefore, the answer is 25.6 miles per hour.

7 0

3 years ago

David hikes 21/4 miles in 1/2 an hour. What is his rate in miles per hour? At this rate, how long will it take him to walk 18 mi

harkovskaia [24]

Answer:

A) speed = 10.5 miles per hour

B) Time taken by him = 1.714 hours

C) Distance = 10.5 mph × 7 hours = 73.5 miles

Step-by-step explanation:

Given as :

The distance cover by David = $\frac{21}{4}$ miles = 5.25 miles

The time taken by David = $\frac{1}{2}$ hours = 0.5 hours

Let the speed = x mile per hour

So, Distance = Speed × Time

A)or, Speed = $\frac{Distance}{Time}$

Or, Speed = $\frac{5.25}{0.5}$

∴ speed = 10.5 miles per hour

<u>B) Again The Distance cover by him = 18 miles</u>

SO, with speed 10.5 miles per hour

The Time taken by him = $\frac{Distance}{speed}$ hours

Or, Time taken by him = $\frac{18}{10.5}$ hours

∴ Time taken by him = 1.714 hours

<u>C) Again the Time taken by him = 7 hours </u>

So, Distance cover by him with speed 10.5 mph

Or, Distance = 10.5 mph × 7 hours = 73.5 miles

A) speed = 10.5 miles per hour

B) Time taken by him = 1.714 hours

C) Distance = 10.5 mph × 7 hours = 73.5 miles Answes

8 0

3 years ago