X 3
-- = --
8 7
Cross Multiply
7x = 24
Divide
x = 3.2485...
A
Answer:
true
Step-by-step explanation:
<span>From the problem, you can get this equation:
Jane is 2 years older than Sally
J=z+2
David is 4 times older than Jane.
D=4J
</span>Write two equivalent expressions that represent David’s age in terms of Sally’s age, z, and explain how the two expressions relate to one another.<span>Sally is z years old.
From the 2 equation above, you can get:
</span>D=4J
D=4(z+2)
D=4z+8
D-8=4z
(D-8)/4=z
The two equivalent expression would be D=4z+8 and (D-8)/4=z
The expression that more usefull would be D=4z+8 if you want to determine David age.
Supplementary angles have a degree measure of 180, so they look like a straight line.
Your answers are 4 and 3, 4 and 5, and 3 and 6.
Answer:
She subtracted 3.4 on the left and added 3.40 on the right
Step-by-step explanation:
3.40 + 0.85 x = 5.27
Subtract 3.40 from each side
3.40 -3.40+ 0.85 x = 5.27-3.40
.85x = 5.27 - 3.40
.85x =1.87
Divide by .85
.85x/.85 =1.87/.85
x = 2.2
