Answer:
{ x | x < 5}
Step-by-step explanation:
2(4 x + 3) < 5 x + 21
8x + 6 < 5x + 21
3x < 15
x < 5
Answer
{ x | x < 5}
Answer:
-5
Step-by-step explanation:
Substituting x=4 into the equation gives a 2-step linear equation in y. It is solved by isolating the variable and making its coefficient be 1.
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<h3>use x=4</h3>
When x=4, the equation becomes ...
-3x +9y = -57
-3(4) +9y = -57
-12 +9y = -57
<h3>solve 2-step equation</h3>
The <u>first step</u> is to "isolate" the variable term (9y) by adding the opposite of the constant that is on the same side of the equation. The result is that the variable term is by itself on one side of the equal sign.
-12 +12 +9y = -57 +12 . . . . . add the opposite of -12
9y = -45 . . . . . . . . . . . . . . simplify
The <u>second step</u> is to make the coefficient of y be 1. We do that by multiplying by its inverse, 1/9. Equivalently, we divide by 9.
(1/9)(9y) = (1/9)(-45) . . . . multiply by the inverse of 9
y = -5 . . . . . . simplify
Answer:
18
Step-by-step explanation:
3 x 3 = 9
9 x 2 = 18
First make the denominators of the fractions the same by multiplying.
×
=
Now we just need to add the fractions together
=
9/6 would be the answer, but it can be simplified further, then converted into decimal form.
÷
=
=1.5 yardsYour final answer is 1.5 yards of ribbon are needed.
Answer:
A
Step-by-step explanation:
hope this helps please brainiest
