Answer:
D) Multiply A by -4 and B by 5
Step-by-step explanation:
5x-2y=10
4x+3y=7
----------------
-4(5x-2y)=-4(10)
5(4x+3y)=5(7)
----------------------
-20x+8y=-40
20x+15y=35
---------------------
23y=-5
y=-5/23
5x-2(-5/23)=10
5x+10/23=10
5x=10-10/23
5x=230/23-10/23
5x=220/23
x=(220/23)/5
x=(220/23)(1/5)
x=220/115
x=44/23
Answer:
7
Step-by-step explanation:
First, you need to plug in the values for x. Here, we know that x = 5. So, when we plug it in we get 2^5 - 5^2. When we simplify, we then get 32 - 25. Thus, 32 - 25 = 7.
Answer:
C The distance around the circle is the circumference
Step-by-step explanation:
For information:
A is the diameter
B is the radius
To solve, you need to plug in the values they give you into the equation.
5t + 2m
Plug in the numbers they give you
5(2) + 2(7)
Solve.
10 + 14
Simplify.
24
Answer: 1 + 4 = 5
Step-by-step explanation: To the right means to add, so 1 + 4 = 5.
