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3 years ago

15 miles in 20 minutes what is the speed in miles per hour

Mathematics

2 answers:

Readme [11.4K]3 years ago

8 0

15 / 20 = 0.75. The answer is 0.75

Sonja [21]3 years ago

8 0

The rate of the speed is 1.3333333333333 or 1.3 for short.

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Find the values of x and y 155 13x 5y

malfutka [58]

Answer:

Step-by-step explanation:

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2 years ago

Find the circumference of a circle with a diameter 1 1/2 inches

loris [4]

Answer:

C≅17.28

Step-by-step explanation:

Step one:If you divide 11 by 2 it would give you 5.5

Step two:Then use π which is 3.14

Step three:Multiply 5.5*3.14 which gives you 17.27 round to the nearest tenth would be 17.28

Hope it helps!

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3 years ago

The number of bacteria, B, in a refrigerated food is given by the function b(t) = 15t2 - 60t + 125, where t is the temperature o

Nimfa-mama [501]

Answer: $b(t(h))=135h^2+180h+125$

Step-by-step explanation:

Given: The number of bacteria, B, in a refrigerated food is given by the function $b(t)=15t^2-60t+125$ , where t is the temperature of food in degrees Fahrenheit.

The function $t(h)=3h+4$ gives the temperature, t, of the food h hours after being removed from the refrigerator.

Now, the number bacteria in the food in h hours is given by:-

$b(t(h))=15(3h+4)^2-60(3h+4)+125\\=15(9h^2+16+24h)-180h-240+125\\=135h^2+240+360h-180h-240+125\\=135h^2+180h+125$

So, The number bacteria in the food in h hours is given by:

$b(t(h))=135h^2+180h+125$

4 0

3 years ago

What is the solution of 5/2-7= 3/4x+14,

Sidana [21]

Answer:

D) x = 12

Step-by-step explanation:

Given:

$\sf{\dfrac{5}{2}x-7=\dfrac{3}{4}x+14 \implies \dfrac{10}{4}x-7=\dfrac{3}{4}x+14}$

1. Multiply both sides by 4

$\sf{4\left(\dfrac{10}{4}x-7\right)=4\left(\dfrac{3}{4}x+14\right)}\\\\\implies 10x-28=3x+56$

2. Subtract 3x from both sides

$\sf{10x-3x-28=3x-3x+56}\\\\\implies 7x-28=56$

3. Add 28 to both sides

$\sf{7x-28+28=56+28}\\\\\implies 7x=84$

4. Divide both sides by 7 to isolate the variable:

$\sf{\dfrac{7x}{7}=\dfrac{84}{7}}\\\\\implies x=12$

Learn more here:

brainly.com/question/27844194

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2 years ago

What is the exact volume of the cylinder radius is 4 inches height is 8 inches

Gelneren [198K]

The Answer Is A 32n In^3

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3 years ago