Answer:
Step-by-step explanation:
In equation form,
children + adults = 48 people at the library.
If the number of children is 3 times the number of adults, then in equation form:
children = adults*3
Let's call children c and adults a. Subbing the second equation into the first gives us an equation with only one unknown instead of 2.
c + a = 48 after making the substitution is
3a + a = 48 and
4a = 48 so
a = 12
There were 12 adults. If the total number of people was 48, then
48 - 12 = number of children so
c = 36
<span>C: </span><span>Katie’s new chair was on sale for 15% off, making it cost $137.32, but Katie wrote down the before-sale price.
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i just took this test and got it right.
It would be 8 kilometers because there are 100,000 centimeters in a kilometer, and 10 to the 5th power is 100,000
Answer:
A. (0, 2).
Step-by-step explanation:
y = 2 - 6x
1/2y - x = 1
Multiply the 2nd equation by -2
-y + 2x = -2 Adding this to the first equation:
0 + 8x = 0
x = 0.
So y = 2 - 6(0) = 2.
Answer:
x = 2, because 16/8 = (8x)/8
Step-by-step explanation:
Devide both sides by the coefficient of variable
