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SSSSS [86.1K]
3 years ago
12

A volume of a cylinder is given by the expression 6n2 – 13n – 28. The area of the base is 3n + 4.

Mathematics
2 answers:
olga nikolaevna [1]3 years ago
9 0
Volume of cylinder = Base Area x Height

Height = Volume/Base

Height = (6n² -13n -28)/(3n+4)
Perform this division and you will get Height = 2n-7


Viefleur [7K]3 years ago
7 0

Answer:

B: 2n-7

Step-by-step explanation:

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Un jardín rectangular de 50 cm de largo por 34 m de ancho está rodeado por un camino de arena uniforme.Halla la anchura de dicho
Anastasy [175]

Answer:

5.85 m

Step-by-step explanation:

The width of the sand road can be calculated knowing its area and the dimensions of the rectangular garden as follows:

A_{g} = a.b

<u>Where:</u>

Ag: is the area of the rectangular garden

a: is the length of the rectangular garden = 50 cm = 0.5 m

b: is the width of the rectangular garden = 34 m

A_{s} = 540 m^{2}

<u>Where</u>:

As: is the area of the sand road

The relation between the area of the sand road and the area of the rectangular garden is the following:

A_{s} + A_{g} = (a+2x)*(b+2x)

540 m^{2} + 0.5m*34m = ab + 2ax + 2bx + 4x^{2}

557 m^{2} = ab + 2x(a + b) + 4x^{2}

557 m^{2} - 17m^{2} - 2x(34.5 m) - 4x^{2} = 0

540 - 69x - 4x^{2} = 0                              

By solving the above equation for x we have two solutions:

x₁ = -23.10 m

x₂ = 5.85 m

Taking the positive value, we have that the width of the sand road is 5.85 m.

I hope it helps you!

7 0
3 years ago
Which describes the combined variation in the formula h=v/ πr^2?
noname [10]

Step-by-step explanation:

h varies directly with v and inversely with the square of r.

1/pi is the constant of variation.

3 0
3 years ago
(2) Clare said that 4/3:5/2 is 10/3. She reasoned: 4/3.5=20/3 and 20/3:2=10/3.
MissTica

Answer:

The answer is 8/15

Step-by-step explanation:

4/3 divided by 5/2 is the same as 4/3 times 2/5

4/3 times 2/5= 8/15

8/15 is the answer

She is wrong because if you want to do it you have to multiply the fraction with 5 and then MULTIPLY it by 2 not divide it by 2.

Hope this helps :)

<em>-ilovejiminssi♡</em>

7 0
3 years ago
Read 2 more answers
The utilities bill for the Millers home in April was $132. Forty-two percent of the bill was for gas, and the rest was for elect
grandymaker [24]
(total bill)*(percent of bill)=(money paid for that part of bill)

total bill=$132.00
electric %= 0.58 (1-.42)
gas %= 0.42

132*.42=55.44
132*.58=76.56

The Millers paid $55.44 for their gas bill. The Millers paid $76.56 for their electric.

**you can check this because $76.56+$55.44=$132

8 0
3 years ago
write an algebraic expression: the principle amount p originally deposited in a bank account plus 0.3% interest
disa [49]
P + 0.003=A............................
4 0
3 years ago
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