Answer
x=-2 and y=-3
Step-by-step explanation:
Step: Solvey=5x+7for y:
Step: Substitute5x+7 for y in 3x+y=−9:
3x+y=−9
3x+5x+7=−9
8x+7=−9(Simplify both sides of the equation)
8x+7+−7=−9+−7(Add -7 to both sides)
8x=−16
8x/8=−16/8
(Divide both sides by 8)
x=−2
Step: Substitute−2 for x in y=5x+7:
y=5x+7
y=(5)(−2)+7
y=−3(Simplify both sides of the equation)
Answer:
Step-by-step explanation:
f(t)=9t+114
f(4)=9(4)+114
f(4)=36+114
f(4)=150L
Answer:
25 minutes
Step-by-step explanation:
When there are to people washing one elephant they will take half the time.
So half of the longest time will be the answer to the question.
Mary takes longer then Nigel so once Nigel is finished Mary will still wash her side for 5 minutes extra.
Answer:
Step-by-step explanation:
Multiply the numerators for the numerator and multiply the denominators for its denominator and reduce the fraction obtained after multiplication into lowest term.
Or, You can simply reduce the fraction with 2, which results to 1.
Hope I helped!
Best regards! :D
Answer:
Multiply the original price by 75% to find the sale price.
Step-by-step explanation:
100 - 25 = 75%
