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3 years ago

12

What is the surface area of the right rectangular prism with square bases

2 answers:

aliina [53]3 years ago

7 0

Answer:

288 cm^2

Step-by-step explanation:

BartSMP [9]3 years ago

5 0

Answer:

210 cm²

Step-by-step explanation:

SA = Ph + 2B

where SA = surface area

P = perimeter of the base

h = height of the prism

B = area of the base

SA = [(8 + 8 + 8 + 8)(5) + 2(5²) ]cm²

SA = 210 cm²

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The sum of two numbers is 90. Their difference is 18. Find<br> the numbers.

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Step-by-step explanation:

<em><u>By </u></em><em><u>Question</u></em><em><u> </u></em><em><u>:</u></em><em><u>-</u></em><em><u> </u></em>

Sum of numbers = 90 .
Difference of numbers = 18 .

<em><u>Let </u></em><em><u>:</u></em><em><u>-</u></em><em><u> </u></em>

First Number be x .
Second number be y .

<em><u>According</u></em><em><u> to</u></em><em><u> </u></em><em><u>1</u></em><em><u>s</u></em><em><u>t</u></em><em><u> </u></em><em><u>condition</u></em><em><u> </u></em><em><u>:</u></em><em><u>-</u></em><em><u> </u></em>

$: \implies$ x + y = 90

<u>According</u><u> to</u><u> </u><u>2</u><u>n</u><u>d</u><u> </u><u>condition</u><u> </u><u>:</u><u>-</u><u> </u>

$: \implies$ x - y = 18

<em><u>Adding</u></em><em><u> the</u></em><em><u> </u></em><em><u>equations</u></em><em><u> </u></em><em><u>:</u></em><em><u>-</u></em><em><u> </u></em>

$: \implies$ 2x = 18 + 90

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<em><u>Therefore</u></em><em><u> </u></em><em><u>:</u></em><em><u>-</u></em><em><u> </u></em>

$: \implies$ First number = 54

$: \implies$ Second number = 36

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Your weekly base salary is $150. You earn $20 for each phone you taht you sell. The company policy is that as a part-time employ

Eduardwww [97]

Answer:

You can sell at least 40 phones each week.

Step-by-step explanation:

Given that:

Weekly base salary = $150

Earning on each phone = $20

Maximum amount that can be earned each week = $950

Let,

m be the number of phones.

20m + 150 ≤ 950

20m ≤ 950 - 150

20m ≤ 800

Dividing both sides by 20

$\frac{20m}{20}\leq \frac{800}{20}$

m ≤ 40

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You can sell at least 40 phones each week.

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