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3 years ago

Evaluate each expression if m equals 3 and n equals 7, 3mn is?

Mathematics

2 answers:

Phantasy [73]3 years ago

4 0

Answer:

Step-by-step explanation:3(3)(7)=63

3241004551 [841]3 years ago

3 0

Answer: 3 x 3 x 7 = 63

Step-by-step explanation: I am not sure if this is what you are asking but when a number and a variable and next to each other without any spaces it means that you should multiply them, so, 3 x m is just 3 x 3. Expanding on this, if 3 x 3 x n is equal to 3 x 3 x 7 then you can just multiply 3, 3, and 7 for a total of 63.

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3 years ago

Megan purchased a new gadget for her technology hobby. She plans to sell it sometime in the future; however, its value depreciat

Dmitrij [34]

The coefficient (m) of the expression represents: C. the monthly depreciation value of the gadget.

<h3>What is depreciation?</h3>

Depreciation can be defined as a process in which the monetary value of a physical asset decreases or falls over a period of time, especially due to wear and tear.

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Read more on depreciation here: brainly.com/question/25806993

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2 years ago

If y varies inversely with x, and y=-5 when x=20, find X when y-4.

larisa [96]

Answer:

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Step-by-step explanation:

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4 0

3 years ago

Find three decimals that make the number sentence true for 1.75>

Tpy6a [65]

Answer:

1.74

1.71

1.67

Step-by-step explanation:

Because....

1.75>1.74

1.75>1.71

1.75>1.67

8 0

3 years ago

Wally is rebuilding his fence. Each section of the fence will have 12 vertical boards that are each eight inches wide. He’s goin

Leokris [45]

Answer:

Part A)

Each diagonal is about 9.43 feet.

Part B)

In total, Wally needs about 736.02 feet of wood.

Step-by-step explanation:

Part A)

Since each vertical board has a width of 8 inches, for one section with 12 vertical boards, the total width will be 8(12) = 96 inches.

96 inches is the same as 96/12 = 8 feet.

We are also given that the horizontal pieces will be 5 feet apart.

To find the diagonal, we can use the Pythagorean Theorem. The 8 is the base and 5 is the height. Therefore:

$\displaystyle d^2=8^2+5^2$

Compute:

$d^2=89$

Taking the square root, we acquire:

$\displaystyle d=\sqrt{89}\approx9.43 \text{ feet}$

So, each diagonal is about 9.43 feet.

Part B)

For each section, we have two horizontal pieces (each 8 feet) and one diagonal piece (each √89 feet).

Therefore, for one section, we will need a total of:

$\displaystyle L=8+8+\sqrt{89}=16+\sqrt{89}$

Then for 30 sections, we will need:

$T=30(16+\sqrt{89})$

Approximate:

$T\approx 763. 02$

Wally will need about 736.02 feet of wood in total.

3 0

3 years ago

Evaluate each expression if m equals 3 and n equals 7, 3mn is?​

Evaluate each expression if m equals 3 and n equals 7, 3mn is?