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Sauron [17]
3 years ago
15

If the perimeter of the triangle is 95 inches, what is the length of each side? n, 3n+8, and 4n+7.

Mathematics
1 answer:
IrinaVladis [17]3 years ago
7 0

Answer: 10, 38, 47

Step-by-step explanation:

n + (3n + 8) + (4n + 7) = 95

8n + 15 = 95

8n = 80

n = 10

3(10) + 8 = 38

4(10) + 7) = 47

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Sam typed 420 words in 10 minutes. If he continues to type at this rate, how many words will he have typed in 3 hours? Group of
patriot [66]

Answer:

7,560 words were typed in 3 hours.

6 0
3 years ago
A company is constructing an​ open-top, square-based, rectangular metal tank that will have a volume of 49 cubic feet. What dime
yawa3891 [41]

Answer:

b = 4.6 ft

h = 2.3 ft

Step-by-step explanation:

The volume of the tank is given by:

b^2*h=49

Where 'b' is the length of the each side of the square base, and 'h' is the height of the tank.

The surface area can be written as:

A=b^2+4bh\\A=b^2+4b*({\frac{49}{b^2}})\\A=b^2+\frac{196}{b}

The value of b for which the derivate of the expression above is zero is the value that yields the minimum surface area:

\frac{dA}{db} =0=2b-\frac{196}{b^2}\\2b^3=196\\b=4.61\ ft

The value of h is then:

h=\frac{49}{4.61^2}\\h=2.31\ ft

Rounded to the nearest tenth, the dimensions are b = 4.6 ft and h = 2.3 ft.

7 0
3 years ago
Need help with this question regarding functions. :)
Tanzania [10]

The Y-intercept is found when X is equal to 0.

In the table, when X is 0, f(x) is 1.


On the graph, when X is 0 the line crosses at Y = 1.


This means that they are equal.


The answer would be equal to.

4 0
3 years ago
Which of the following is a rational number
krek1111 [17]
The answer is B because a rational number is a number that can be expressed as a fraction and 1.425 can be written as 1425/1000
7 0
3 years ago
Pleaseeeeeee helpppppppp​
mixer [17]

Answer:

B) Multiplying by 0

Step-by-step explanation:

This answer is correct because lets say we have a nonzero number, (IN this case lets say 4) 4+0 is 4, and that does not change the value because it is still 4, so A is not correct. Multiplying by 1 and dividing by one leads to the same conclusion. They both wind up to 4. The only one is B) because 4x0 is 0 and that isn't 4, so it changes value.

Hope this helped :)

5 0
3 years ago
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