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3 years ago

Can anyone plzzzz helpn Thank you

Mathematics

1 answer:

Rina8888 [55]3 years ago

5 0

Answer:

200 square feet

Step-by-step explanation:

The formula for the lateral surface area of a square pyramid is $a\sqrt{a^2+4h^2}$ , where a is the side length and h is the height of the pyramid. The first step is therefore to find the height of the pyramid. Using the pythagorean theorem, you can find that it is $\sqrt{10^2-5^2}=5\sqrt{3}$ . Plugging in our known values into the equation, you get $10\sqrt{10^2+4(5\sqrt{3})^2}=10\sqrt{100+300}=10\cdot 20=200$ . Hope this helps!

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Answer:

B. (-2,-4)

Explanation

Given equations:

y = 3x + 2

y = -2x - 8

Solving both equations will yield the values of x and y;

Solution:

y = 3x + 2 ----- (i)

y = -2x - 8 ------ (ii)

Using substitution method, input equation i, into ii

3x + 2 = -2x - 8

Collect like terms and solve;

3x + 2x = -8 -2

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x = -2

Then put x = -2 into i, to find y

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2 years ago

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2 years ago

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Answer:

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

We are asked to find the value of a bond after 10 years, if you invest $1000 in a savings bond that pays 4% interest, compounded semi-annually.

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$FV=\$1,000\times (1+0.04)^{20}$

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Step-by-step explanation:

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