Answer:
zinc = 152 grams
Step-by-step explanation:
Ratio of zinc to copper = 4 : 15
Copper = 570 grams
zinc = x grams
Find x
Ratio of zinc to copper = x : 570
Equate both ratios
4 : 15 = x : 570
4/15 = x/570
Cross product
4 * 570 = 15 * x
2,280 = 15x
x = 2,280/15
= 152
x = 152 grams
zinc = 152 grams
Answer:
a
you should take values of x and y that are similar or they are close to each other like 8 is close to 8.5
b
u will take the average of all the scores with 8hr sleep
→Answer:
y = -1/4x - 6
→Step-by-step explanation:
Well it is a negative slope with a y intercept of -6.
And to spring the slope we need to use the following formula.
So we need 2 points on the line to use the formula.
(-4,-5) (0,-6)
-6 - -5 = -1
0 - -4 = 4
So the slope is -1/4.
Hence, the equation is y = -1/4x - 6
An equation is 16-9=7
9+7=16
16-7=9
16-9=7