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3 years ago

Please help need answer. NO LINKS

Mathematics

1 answer:

nikklg [1K]3 years ago

7 0

Answer:

Answer choice C) 3a-3

Step-by-step explanation:

Your perimeter is of (10a-6). The first step would be multiply 2a by 2 since you have to sides. Which would give you to 4a. Next you will have to subtract 4a from (10a-6). This would give you 6a-6. Finally divide by two and you will get 3a-3.

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What is the answer to (12^2)^3 times 12^-4<br> and 12^7 times 12^-5 over 12^2

raketka [301]

Answer: 12² = 144

12² ÷ 12² = 1

Step-by-step explanation:

I'll go through it backwards: 12^7 times 12^-5 You subtract the -5 from 7 in the exponents to get 12^2. 12^2 divided by 12^2 is 1.

(12^2)^3 works out to 12^6 because you multiply the exponents when its a power raised by a power. Then you subtract the 4 from the 6 (or add -4 +6) to get 12^2.

That means 12 squared, same as 12 times 12

That's 144.

If you have to multiply the two parts together, It's 144 times 1.

If "and" means "add them together"-- YOU KNOW!

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3 years ago

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3 years ago

7 is divided by a number.<br> As an expression

kakasveta [241]

Answer:

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Step-by-step explanation:

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3 years ago

Avi uses 11 toothpicks to form a row of 5 attached triangles, as shown. Suppose he continues this pattern, using 89 toothpicks i

Pavel [41]

Answer:

Step-by-step explanation:

Given that Avi used 11 toothpicks to form a row of 5 attached triangles.

Total number of toothpicks used = 89

Let the total number of triangles formed be represented by x, so that:

11 toothpicks = 5 triangles

It would be observed that only the first triangle starting the pattern has 3 toothpicks. So that;

the average number of toothpicks for 1 triangle = $\frac{11}{5}$

= 2.2

The number of toothpicks per triangle = 2.0

Thus,

x = $\frac{89}{2.0}$

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x = 44

The total number of triangles formed is 44.

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3 years ago

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bekas [8.4K]

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3 years ago