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Elena L [17]
3 years ago
8

A painter charges $32 per hour for labor plus $50 for supplies. If the total charge was $338 how many hours did he spend paintin

g?
Mathematics
1 answer:
Leni [432]3 years ago
4 0
32x+50=338, 32x=288, x=9. 9 hours.
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A company rents water tanks shaped like cylinders. Each tank has a radius of 3 feet and a height of 2 feet. The cost is $ 4 per
Alexxandr [17]

Answer:

The total cost of the cylindrical tank is $226.28

Step-by-step explanation:

Dimensions of the tank are:  radius = 3 ft , height = 2 ft

Cost per cubic foot = $4

Now, total volume of the cylindrical tank =  \pi \times r^{2}h

Here, take π = 22/7

So, Volume  = \frac{22}{7}  \times (3)^{2} \times (2) = \frac{22 \times 9 \times 2}{7}  = \frac{396}{7}  = 56.57 cubic ft

So, the <u>volume of the tank = 56.57 cubic feet. </u>

Now, cost per cubic foot = $4

Hence, the total cost of the tank = Total Volume of the tank x cost per foot

                                                       = 56.57 x 4 = $226.28

So, the total cost of the cylindrical tank is $226.28

5 0
3 years ago
The answer plzzzzzzzzzzzzzzzzzzzzzz
Tanzania [10]

Answer: (3) y= 2x+8

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Convert the rate 30 cm/s to m/h
MrRissso [65]
1m=100cm\to1cm=\dfrac{1}{100}m\\\\1h=3600s\to1s=\dfrac{1}{3600}h\\\\\\30\dfrac{cm}{s}=30\cdot\dfrac{\frac{1}{100}}{\frac{1}{3600}}\ \dfrac{m}{h}=30\cdot\dfrac{1}{100}\cdot3600\ \dfrac{m}{h}=30\cdot36\ \dfrac{m}{h}=\boxed{1,080\ \frac{m}{h}}\\\\\\Answer:\boxed{30\frac{cm}{s}=1,80\frac{m}{h}}
3 0
4 years ago
There are 8,253 men and 10,327 women at a state university. If 43% of the men are in business and 27% of the women are in busine
fredd [130]

Answer:

68 students

Step-by-step explanation:

Number of men who major in business in the university= 0.43*8253=3548.79

Rounding off we have 3549 students

Number of women who major in business in the university= 0.27*10327=2788.29

Approximately 2789 students

Total students who major in Business= 3549+2789=6338 students

Total students in school= 8253+10327=18580

Probability of getting business major= 6338/18580

Out of 200 students, we expect

\frac {6338}{18580} \times 200=68.22389666

Approximately 68 students will be majoring in business

8 0
3 years ago
Find an equation for these points (-5,5) (4,2)
user100 [1]

Answer:

\large\boxed{y=-\dfrac{1}{3}x+\dfrac{10}{3}}

Step-by-step explanation:

The slope-intercept form of an equation of a line:

y=mx+b

<em>m</em><em> - slope</em>

<em>b</em><em> - y-intercept</em>

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

We have two points (-5, 5) and (4, 2).

substitute:

m=\dfrac{2-5}{4-(-5)}=\dfrac{-3}{9}=-\dfrac{1}{3}

Put the value os a slope and coordinates of the point (4, 2) to the equation of a line:

2=-\dfrac{1}{3}(4)+b

2=-\dfrac{4}{3}+b             <em>add 4/3 to both sides</em>

2\dfrac{4}{3}=b\to b=3\dfrac{1}{3}\to b=\dfrac{10}{3}

6 0
4 years ago
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