Please help me on this question

Mathematics

2 answers:

Masteriza [31]4 years ago

8 0

The answer would be B.

romanna [79]4 years ago

3 0

Since all 4 sides of the pyramid are the same we just need to find out the area of one face then multiply it by 4. The formula to figure out the area of a triangle is base x height ÷ 2. Now we just need to plug in the numbers.
Surface Area=bxh÷2
SA=7.2x6.2÷2
SA=44.64÷2
SA=22.32

Now that we have the area of one face we need to multiply it by 4.
22.32 x 4 = 89.32

The closest answer to 89.32 would be 88.3cm2 so the answer is B.

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Answer:

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Step-by-step explanation:

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Helen [10]

Hey there, Bulgogi!

The correct answer will be the first one since [I'm assuming] you know that to calculate the percentage of something, it's the amount of that something divided by the total amount but since only 30 students voted [12+18] multiplied by 100.

So, we are calculating the percentage on votes and 12 students voted for Candidate A so our Numerator will be 12 and our Denominator will be the total amount of student who voted, so 30 [or 12+18]

Once put into a fraction, we will get $\frac{12}{12+18}$ which would be equals to 2/5 or 0.4. Now we multiply by 100 and we get a total of 40% for Candidate A.

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vaieri [72.5K]

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Step-by-step explanation:

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goldfiish [28.3K]

$\bf ~~~~~~ \textit{Continuously Compounding Interest Earned Amount}\\\\
A=Pe^{rt}\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
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\end{cases}
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3 years ago