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UNO [17]
3 years ago
5

Calculate the value of X in the diagram​

Mathematics
1 answer:
Andrew [12]3 years ago
5 0

Answer:

EA =  \frac{21 \times 15}{7}  = 45 \\ { \tt{ \frac{21}{7}   =  \frac{x}{45} }} \\ x = 135

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grigory [225]

Answer:

A general exponential equation is written as:

f(x) = A*(r)^x

Where:

A is the initial value, this is the value that the function takes when x = 0.

r is the rate of growth

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In this case, the function is:

f(x) = 2*(4)^x

The initial value is:

f(0) = 2*(4)^0 = 2*1 = 2

The initial value is 2.

And the rate of growth is 4.

So Martin seems to mixed these two values (he said initial value = 4, and rate  = 2, which is the opposite of what we found)

8 0
2 years ago
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Answer:

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Step-by-step explanation:

The reson why this is your answer is simple

Because this is true, he ONLY surveyed tenth-graders. He should have found for all of the students, including the other 1,100 students that didn't get surveyed.

Thanks!

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