Answer:
A)x=9
Step-by-step explanation:
On the picture
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Answer:
3(3+x)=9+3x, or B
Step-by-step explanation:
From the diagram, we can see that there are 3 rows of one x and 3 ones each.
Therefore, we can make the equation 3(3+x)
Then we could either count the blocks out to get 9+3x or just solve the above equation.
So, the answer would be 3(3+x)=9+3x, or B
Answer:
Z=0.75
Step-by-step explanation:
Given
Z is inversely proportional to X.
First we’ll define what an inverse proportion is. Inverse proportion is a relationship between two quantities such that if one quantity increases the other decreases.
Symbolically the relationship between Z and X can be defines as
Z ∝ 1/X
When the proportionality symbol is removed a constant is introduced.
Z= K/X
As we Know,
X=16
Z=1.125
We can find the value of K by using the values of Z and X
Putting in the values
1.125=K/16
K=1.125*16
K=18
Now, For
X=24
Z= 18/24
Z=0.75
X=4.2
For the second equation, y=4x-25. Then you plug that into the first equation, which would form: 2x+2(4x-25)=17. Simplify. 2x+8x-25=17. 10x=42. x=4.2