610 - 187 = 423
The answer should be 423. This is a subtraction problem right?
Answer:
Z= 5ft
Step-by-step explanation:
14/7 is equal to 2 so I divided 10/2 to get 5.
Answer:
The answer is D.
Step-by-step explanation:
Sci-Fi + Comedy = 60.
Other + Action = 59.
So, that makes it D.
Hope this helps. :)
Answer: For the sum of 130
First: $90
Second: $40
Step-by-step explanation:
We write equations for each part of this situation.
<u>The Total Charge</u>
Together they charged 1550. This means 1550 is made up of the first mechanics rate for 15 hours and the second's rate for 5 hours. Lets call the first's rate a, so he charges 15a. The second's let's call b. He charges 5b. We add them together 15a+5b=1550.
<u>The Sum of the Rates</u>
Since the first's rate is a and the second is b, we can write a+b=130 since their sum is 130.
We solve for a and b by substituting one equation into another. Solve for the variable. Then substitute the value into the equation to find the other variable.
For a+b=130, rearrange to b=130-a and substitute into 15a+5b=1550.
15a + 5 (130-a)=1550
15a+650-5a=1550
10a+650-650=1550-650
10a=900
a=$90 was charged by the first mechanic.
We substitute to find the second mechanic's rate.
90+b=130
90-90+b=130-90
b= $40 was charged by the second mechanic
x^2 - 7x = -12
Add 12 to both sides.
Doing so, we get x^2 - 7x +12 = 0.
We now factor the left side.
Doing so, we get (x - 3) (x - 4) = 0.
Set each factor to 0 and solve for x.
x - 3 = 0
x = 3
x - 4 = 0
x = 4
Answer: Choice d