Answer:
f(-3)=3
Step-by-step explanation:
We know that f(x)=-2x-3. In order to find f(-3), we simply need to substitute x with -3.
Thus, we have:
=-2(-3)-3
=6-3
=3
Answer:both of them are correct
Step-by-step explanation: A ratio is like a fraction you can simplify it so when you simplify 24:15 by 3 it gives you 8:3
Answer:
.
Step-by-step explanation:
The given expression is

We need to simplify the expression such that answer should contain only positive exponents with no fractional exponents in the denominator.
Using properties of exponents, we get
![[\because a^ma^n=a^{m+n}]](https://tex.z-dn.net/?f=%5B%5Cbecause%20a%5Ema%5En%3Da%5E%7Bm%2Bn%7D%5D)

![[\because a^{-n}=\dfrac{1}{a^n}]](https://tex.z-dn.net/?f=%5B%5Cbecause%20a%5E%7B-n%7D%3D%5Cdfrac%7B1%7D%7Ba%5En%7D%5D)

We can not simplify further because on further simplification we get negative exponents in numerator or fractional exponents in the denominator.
Therefore, the required expression is
.
Answer:
x=1
Step-by-step explanation:
-8x+2(4+2)=4
-8x+2×6=4
-8x+12=4
-8x=4-12
-8x= -8
we multiply both sides with (-1) to get a positive number in the x side
-8x= -8 / ×(-1)
8x=8
x=8/8
x=1
30/80 = 0.375(100) = 37.5%
30 is 37.5% of 80