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Goryan [66]
3 years ago
7

I have a car dealership employing 4 mechanics. I received 20 cars to repair today. How

Mathematics
1 answer:
schepotkina [342]3 years ago
5 0

We are given that car dealership employed 4 mechanics. and 20 cars came there.

That means each employee should handle \frac{20}{4} = 5 cars

Which means we need to choose 5 cars from 20 cars first . For that we need to use combinations since order in which car is given to mechanic does not matter.

Hence number of ways =20_{C_{5} } =\frac{20! }{15! * 5!} =  15504 ways of allocating.

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The volume of a rectangular prism is 125 units ?. If the height is 25 units, what is the area,
Elza [17]

Answer:

The area of the base would be 5 units.

Step-by-step explanation:

To find the volume of a rectangular prism you would multiple the length, height, and width together. So, to find the area of one side divide one side length, 25, from the volume of 125 (125 ÷ 25), which equals 5 units.

3 0
3 years ago
Help please<br>h - (-2) ≥ 10​
hichkok12 [17]

Answer:

answer

Step-by-step explanation:

h+2 ≥ 10

h ≥ 10 - 2

h ≥ 8

5 0
3 years ago
7th grade math - sales tax (please help)
arlik [135]

Answer: $6.67

Step-by-step explanation: Divide 18 by 2.7 which would be $6.67.

6 0
2 years ago
A square pyramid is shown:
Colt1911 [192]
Area of triangles:
0.5x9=4.5
4.5x2=9 (i divided 4 (the amount of triangles) by 2 instead of dividing 4.5 by 2)

area of square:
0.5x0.5=0.25

surface area of whole thing:
9+0.25=9.25

so the answer is 9.25

hope this helps :)
7 0
3 years ago
Find the center and the radius of the circle with the equation: x^2 +2x + y^2-2y-14 =0
FrozenT [24]
We need to convert the equation of the circle to standard form only then we can find the radius and the center of the circle.

x^{2} +2x+ y^{2}-2y-14=0 \\  \\ &#10;x^{2} +2x+ y^{2}-2y=14 \\  \\ &#10;x^{2} +2(x)(1)+ y^{2}-2(y)(1)=14 \\  \\ &#10; x^{2} +2x+1 + (y^{2}-2y+1)=14+1+1  \\  \\ &#10;(x+1)^{2}+(y-1)^{2} =16 &#10;

From this equation we can write:

Center of the circle is (-1,1) and the radius of the circle is 4.
5 0
3 years ago
Read 2 more answers
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