Set the ones digit to x. 2x+1=7, so 2x=6, so x=3.
x+1 is the tens digit, so the tens digit is 4 and the number is 43.
3
If b =3 and 2b cubed.. the answer would be 2(3) cubed +5
Answer:
(A) 11.51%
(B) 13.27%
(C) We are 95% confident that the true value of the population mean is in between 7.70 and 8.30
(D) Increase
(E) Decrease
Step-by-step explanation:
This whole ugly thing is just 6 numbers that are all multiplied.
Here they are:
(-7) · (x⁶) · (y⁻³) · (5) · (x⁻¹) · (y) .
To help you see what's going on, I'm going to rearrange them
and write them in a different order. (You'll remember that when
you multiply, the order of the numbers doesn't matter.)
(-7)·(5) · (x⁶)·(x⁻¹) · (y⁻³)·(y) .
I'll bet you can see it already. It's really starting to fall apart.
Remember that when you have to multiply the same base to
different powers, you just add the powers.
So here's the multiplication:
(-7)·(5) · (x⁶)·(x⁻¹) · (y⁻³)·(y) .
| | |
-35 · x⁵ · y⁻²
-35 x⁵ y⁻²
or you could write it as -35x⁵ / y² which is the same thing.
60q+j=52
125q+j=65
multiply first equation by -1 and add to 2nd
-60q-j=-52
<u>125q+j=65 +</u>
65q+0j=13
65q=13
divde both sides by 65
q=0.2oz
sub back
when
60q+j=52
60(0.2)+j=52
12+j=52
minus 12 both sides
j=40
the jar is 40 ounces