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stiv31 [10]
3 years ago
11

Can you answer these questions?

Mathematics
2 answers:
vitfil [10]3 years ago
4 0
Both of them are the first answer choice
spayn [35]3 years ago
4 0
The answer for the first question is 7p+3 and for the second question is eight minus two times a number
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A sporting goods store pays $180 for a rubber raft. The percent markup is 40%. What is the raft's selling price?
o-na [289]
\$180 \times 1.40 = \$252
5 0
3 years ago
Least common multiple for<br> 10 and 4
marin [14]

Answer:

20

Step-by-step explanation:

10- 10, <u>20</u>, 30, 40 ,50

4- 4, 8, 12, 16, <u>20</u>

4 0
3 years ago
Read 2 more answers
-7a-10=20-3a please show work help
olga_2 [115]
-7a-10=20-3a

Combine like terms:
-4a -10 = 20
-4a = 30

Solve for a:
a =  -\frac{30}{4} = -7.5

Your answer: a = -7.5
7 0
3 years ago
The gas mileage for a certain vehicle can be approximated by m=−0.05x2+3.5x−49, where x is the speed of the vehicle in mph. Dete
Whitepunk [10]

Answer:

<h2>14mph</h2>

Step-by-step explanation:

Given the gas mileage for a certain vehicle modeled by the equation m=−0.05x²+3.5x−49 where x is the speed of the vehicle in mph. In order to determine the speed(s) at which the car gets 9 mpg, we will substitute the value of m = 9 into the modeled equation and calculate x as shown;

m = −0.05x²+3.5x−49

when m= 9

9 = −0.05x²+3.5x−49

−0.05x²+3.5x−49 = 9

0.05x²-3.5x+49 = -9

Multiplying through by 100

5x²+350x−4900 = 900

Dividing through by 5;

x²+70x−980 = 180

x²+70x−980 - 180 = 0

x²+70x−1160 = 0

Using the general formula to get x;

a = 1, b = 70, c = -1160

x = -70±√70²-4(1)(-1160)/2

x = -70±√4900+4640)/2

x = -70±(√4900+4640)/2

x = -70±√9540/2

x =  -70±97.7/2

x = -70+97.7/2

x = 27.7/2

x = 13.85mph

x ≈ 14 mph

Hence, the speed(s) at which the car gets 9 mpg to the nearest mph is 14mph

4 0
2 years ago
HELP IVE BEEN STUCK IN THIS QUESTIONS FOR AGES ... ILL GIVE 50 POINTS
Ivanshal [37]

Answer:

You will need 34 square feet of carpet

4 0
3 years ago
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