Answer:
3x-5=25
Step-by-step explanation:
Answer:
(-2)^2-(-8)+1
Step-by-step explanation:
w^2-v+1
(-2)^2-(-8)+1
3/4 goes into 3 how many times?
3/4 times x=3
times both side by 4/3
12/12 times x=12/3
1 times x=4
x=4
answer is 4 days
A fraction is a piece of a whole 3/5
a opposite number is like -5 and +5
a reciprocal is the inverse operation -5 and +5 again
Answer:
d. 2.4 in
Step-by-step explanation:
So initially w/o frame the area was 5 x 7 = 35 sq in.
Now we have to add the width of the frame to both dimensions.
(5+w)(7+w) = 69.56 sq in
35 + 7w + 5w + w² = 69.56
w² + 12w + 35 = 69.56
w² + 12w - 34.56 = 0
I use the quadratic formula to solve this (x = -b±√b²-4ac / 2a). I cheat by using a quadratic program on the calculator :,)
w = 2.4
w = -14.4
Since we can't have a negative width, the answer must be <u>w = 2.4 inches.</u>
You can also just plug the answer choices one-by-one into the calculator with guess-and-check because this is multiple choice.
