Answer:
2.743 × 10^7
Step-by-step explanation:
The reason as to why 10 is to the 7th power is because the number that you turn into scientific notation (27430000), needs to be in ones form. Which is 7 decimal places away.
Copy down the given function:
f(x)=3•2^x
Now replace both instances of x with -2:
f(-2) = 3*2^(-2). 1
Recall that 2^(-2) is the same as ------ = 1/4
2^2
Therefore, f(-2) = 3*2^(-2) = 3*(1/4) = 3/4
Remember that exponentiation has to be carried out before multiplication. That's why I did 2^(-2) before multiplying by 3.
A =
bh Multiply both sides by 2 to cancel out the fraction
2A = bh Divide both sides by b
= h Switch the sides to make it easier to read
<span>
h = </span>
It's (4,2). Can you comment why you're having a struggle with this? I might be able to help you.
Rita can make 144 earrings in 3 hours. I multiplied 12 times 4 which equals 48, then times 48 by 3 and got 144.
