Answer:
The original price was 780.09
Step-by-step explanation:
Let x be the price of the computer
The sales tax is x* .08
The total price is x + .08x = 1.08x
This is equal to 842.50
1.08x = 842.50
Divide each side by 1.08
1.08x/1.08=842.50/1.08
x =780.09
The original price was 780.09
It’s +64 bc a negative times a negative becomes a positive and 8x8 is 64
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
a) 35 x 13 + 3.14 x 
²
= 455 + 3.14 x 42.25
= 455 + 132.665
= 587.665 m²
∴ The area is 587.665 m².
Answer:19
Step-by-step explanation:
90 - 23 = 67, 67 = 4x - 9, 76 = 4x, 76 / 4 = 19
