Answer:

Step-by-step explanation:
Let
x -----> grams of zinc
y ----> grams of copper
we know that
-----> equation A
For y=629 grams of copper
substitute in the equation A and solve for x



Step-by-step explanation:
To cover a rectangular region of her yard, Penny needs at least 217 square feet of sod. The length of the region is 15.5 feet. What are the possible widths of the region?
L=length=15.5 ft; W=width; A=area=>217 sq ft
L*W=>217 sq ft Divide each side by L
W=>217 sq ft/L
W=>217 sq ft/15.5 ft=>14 feet
ANSWER: To cover at least 217 sq ft. the width must be at least 14 feet.
Answer:I think the answer is P=2
Step-by-step explanation:
9(p-40=-18
Divide both sides by 9
p-4=-2
Move constant to the right
p=-2+4
Calculate
Solution
p=2
Take out the variable to add the numbers because it is the same variable throughout so 6-5+7=8 then add the n^2 o get 8n^2
Answer:whats the question
Step-by-step explanation:question?