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2 years ago

Write and simplify the expression for the area of a rectangle with a width of 3 inches and a length that is 8 inches more than x

1 answer:

meriva2 years ago

4 0

3(x+8)
You know that area of a rectangle is length x width. The width you know is 3 and the length is whatever x is plus 8 more inches, therefore it is x+8.

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1 2 3 4 5 B 10 Which statement about rational numbers is true? All rational numbers are fractions. Rational numbers never have r

aleksandrvk [35]

Answer:

all fractions containing integers are rational numbers is true I believe.

Step-by-step explanation:

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2 years ago

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20% of what number is 12

yawa3891 [41]

Answer:

The number is 60

Step-by-step explanation:

Of is multiply and is means equals

20% * N = 12

Changing to decimal form

.20 N = 12

Divide by .20

.20N/.20 = 12/.20

N = 60

The number is 60

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2 years ago

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Identify the ellipses, represented by equations, whose eccentricities are less than 0.5

ozzi

Answer:

See explanation

Step-by-step explanation:

Hello, we cannot see the ellipse equations.

The eccentric of an ellipse is given by:

$e = \frac{c}{a}$

Assuming the equations are:

$\frac{ {x}^{2} }{25} + \frac{ {y}^{2} }{16} = 1$

Then a²=25 and b²=16

${c}^{2} = {a}^{2} - {b}^{2}$

${c}^{2} = 25 - 16$

${c}^{2} = {3}^{2}$

$c = 3$

The eccentricity is:

$e = \frac{3}{5} = 0.6$

If the ellipse has equation,

$\frac{ {x}^{2} }{ {5}^{2} } + \frac{ {y}^{2} }{ {3}^{2} } = 1$

then the this time, we have a=5 and b=3.

This means that:

${c}^{2} = {a}^{2} - {b}^{2}$

${c}^{2} = {5}^{2} - {3}^{2}$

${c}^{2} = {4}^{2}$

$c = 4$

$c = \frac{4}{5} = 0.8$

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2 years ago

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What is the value of x? Then determine the measure of each angle. will brainlist first correct answer

kherson [118]

Answer:

Step-by-step explanation:

I have to go with 9r-18= -27 is my answer for your math

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2 years ago

13. Danny is in science class and is given a square block of metal with

jenyasd209 [6]

Answer: 336g.

Step-by-step explanation:

the formula for density is mass divided by volume (m/v). In this problem, you mus first find the volume of the square block. The formula for volume is length multiplied by width multiplied by height (LxWxH). To solve for volume you plug in the values to the equation: 6x4x2 = 48.

Now, you have the volume, and you have the density. Now you need to solve for mass. Plug in the values you have into the density equation (d=m/v):

7=m/48

to isolate M, multiply each side by 48. this leaves you with 7x48 = m. now all thats left is to solve. 7x48 = 336g. You can double check by plugging the values back into the equation. 336/48 = 7.

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3 years ago