For A B and C, you just plug in the given number
A
![2(15) + 5 = 35](https://tex.z-dn.net/?f=2%2815%29%20%2B%205%20%3D%2035)
B
![4(20) + 2 = 82](https://tex.z-dn.net/?f=4%2820%29%20%2B%202%20%3D%2082)
C
![6(10) + 5 = 65](https://tex.z-dn.net/?f=6%2810%29%20%2B%205%20%3D%2065)
And for D, you set the equation to 26 and solve for n
![3x + 5 = 26 \\ 3x = 21 \\ x = 7](https://tex.z-dn.net/?f=3x%20%2B%205%20%3D%2026%20%5C%5C%203x%20%3D%2021%20%5C%5C%20x%20%3D%207)
I had to use x instead of n, but for D n=7. :)
Answer:
y = 3
Step-by-step explanation:
-7 = -4y + 5
Subtract 5 from both sides to isolate variable y:
-7 - 5 = -4y + 5 - 5
-12 = -4y + 0
-12 = -4y
Divide both sides by -4 to isolate variable y:
-12 ÷ -4 = -4y ÷ -4
(Negative ÷ Negative = Positive)
3 = 1y
3 = y
Check your work:
-7 = -4(3) + 5
Use PEMDAS:
-7 = -12 + 5
-7 = -7
Correct!
Answer:
7 and 8.
Step-by-step explanation:
When we check out what is √49 and √64, we can see that they equal 7 and 8 respectively. Since √56 is between √49 and √64, we can say that √56 is between 7 and 8.
Hoped this helped.
X-y is positive when y is further away from 0, compared to x. In other words, when y is a larger negative
For example
x = -2
y = -5
x-y = -2-(-5) = -2+5 = 3