Answer:
The answer to your question is -3, 7
Step-by-step explanation:
Data
x + y = 4 ------------ Equation l
7x + 9y = 42 ----------- Equation ll
Process
1.- Solve the system by elimination
- Multiply equation l by -7
-7x - 7y = - 28
7x+9y = 42
2.- Simplify
0 + 2y = 14
3.- Solve for y
y = 14/2
y = 7
4.- Substitute y in equation l to find x
x + 7 = 4
Solve for x
x = 4 - 7
x = -3
You would multiply both sides by 2(b^1+b^2) to get h=A(2b+2b^2)
Are you asking what is 60% of 65?
65×.6
6×60=360
5×6=30
360+30=390.
I multiplied by 6 to make it easier (you can do it in your head). However, you have to multiply by .6 so you have to move the decimal to the left once.
390.00
39 is the answer.
(2 5/14) / (2 5/8 * 1 3/7)....turn them all into improper fractions
(33/14) / (21/8 * 10/7)
(33/14) / (105/28)...when dividing fractions, flip what u r dividing by, then multiply
33/14 * 28/105 = 132/210 reduces to 22/35 <==
Answer:
30 minutes
Step-by-step explanation:
45 = 15 +15 +15 (3 parts of 15)
2 parts of 15 = 30
