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uranmaximum [27]
3 years ago
5

Colton scored a 70 on his first math test of the semester and a 91 on his second math test. By what percent did Colton’s score i

ncrease?
Mathematics
1 answer:
atroni [7]3 years ago
8 0

Well, 91-70=21. We now know that he score 21 percent better than last test. Then we can make a proportion to find increase as it corresponds to the score on his first math test.

21/70=0.3 or 30%

answer: 30% increase

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Pablo borrowed $50,000 to start a business. Three years later, he repaid the $50,000 along with an interest of $9,375. What was
kiruha [24]

Answer:

The annual interest rate is 6.25%

Step-by-step explanation:

We have been given that

P = $50,000

I = $9,375

t = 3 years

r = ?

The formula for simple interest is given by

I=Prt\\\\\text{Substituting the known values, we get}\\\\9375=50000(r)\cdot3\\\\r=\frac{9375}{50000\cdot3}\\\\r=0.0625\\\\r=6.25\%

Therefore, the annual interest rate is 6.25%

6 0
3 years ago
Suppose 15 quarts of a solution that is 35% antifreeze is mixed with 5 quarts of a solution that is 72% antifreeze. 1.how many q
Finger [1]

Answer:

1. 8.85 quarts

2. 44.25%

Step-by-step explanation:

In 15 quarts of a solution with percentage of antifreeze = 35%

Amount of antifreeze = 35% × 15

                                    = 0.35 × 15

                                    = 5.25 quarts

that solution is mixed with 5 quarts of a solution with percentage of antifreeze = 72%

Amount of antifreeze = 72% × 5

                                    = 0.72 × 5

                                    = 3.6 quarts

Total amount of mixture = 15 quarts + 5 quarts = 20 quarts

1. Now we will calculate the total amount of antifreeze in the resulting mixture.

= 5.25 + 3.6 = 8.85 quarts

2. The percentage of the resulting mixture is antifreeze

= \frac{8.85}{20}\times 100

= 44.25%

1. total amount of antifreeze is 8.85 quarts

2. the percentage of antifreeze is 44.25%

3 0
3 years ago
At a fundraiser breakfast, the bill for three glasses of orange juice and five pancake specials is $7.60, whereas the bill for o
r-ruslan [8.4K]
A ) 
3 j + 5 p = 7.60
j + 2 p = 2.90
B ) 
j = 2.90 - 2 p
3 ( 2.90 - 2 p ) + 5 p = 7.60
8.70 - 6 p + 5 p = 7.60
p = $1.10
j = 2.90 - 2.20
j<span> = $0.70</span>
C ) 
The bill for 1 glass of orange juice and 1 pancake special would be:
0.70 + 1.10 = $1.80
3 0
3 years ago
NEED HELP FOR MY STATS CLASS
lianna [129]

Answer:

Explanatory: amount of salt; Response: boiling temperature of the water

Step-by-step explanation:

The chef believes the amount of salt (x) is a predictor for the boiling temperature (y).

3 0
2 years ago
Choose an equation in slope-intercept form for the line that passes through (-8,1) and is perpendicular to the y=2x-17.
N76 [4]
<span>y= -(1/2)x - 5

I think :P</span>
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3 years ago
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