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andrezito [222]
2 years ago
9

Help me with this question please

Mathematics
1 answer:
docker41 [41]2 years ago
6 0

7x/x-4 * x/x+7

mutiply the numerators together

(7x)(x)= 7x^ 2

mutiply the denominators together

(x-4)(x+7)

(x)(x)(7)(x)= x^2+7x

(-4)(x)(-4)(7)= -4x-28

x^2+7x-4x-28

x^2+3x-28

Answer:

7x^2/x^ 2+3x-28

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The answer would be 6 inches!
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What is the least common denominator of 7/x^2 7/5x explain
Usimov [2.4K]
See the denomenators

x^2 and 5x

factor each
x^2=x*x
5x=5*x

lcd=5*x*x or 5x^2

the factions would be 35/5x^2 and 7x/5x^2
6 0
3 years ago
Drag the values to order them from least to greatest, with the least at the top. Item 2 moved to position 3. 79 − − √ + 63 − − √
Nonamiya [84]

\sqrt{63} \\ \\ \sqrt{79}  \\ \\ \sqrt{143} \\ \\ 4\pi

<h2>Explanation:</h2>

As I understand, in this exercise, we have the following numbers:

\text{Number 1}=\sqrt{79} \\ \\ \text{Number 2}=\sqrt{63} \\ \\ \text{Number 3}=\sqrt{143} \\ \\ \text{Number 4}=4\pi

By using calculator, let's convert those numbers into decimal form:

\text{Number 1} \approx 8.88\\ \\ \text{Number 2} \approx 7.93 \\ \\ \text{Number 3} \approx 11.96 \\ \\ \text{Number 4} \approx 12.56

So arranging from least to greatest we have:

\text{Number 2} \\ \\ \text{Number 1} \\ \\ \text{Number 3} \\ \\ \text{Number 2}

Put another way:

\sqrt{63} \\ \\ \sqrt{79}  \\ \\ \sqrt{143} \\ \\ 4\pi

7 0
2 years ago
The tape diagram below represents 100% percent.
Sonja [21]
The shaded area is 75%
5 0
2 years ago
the volume of a cylinder is given by the formula v=3.14r^2h, where r is the radius of the cylinder and h is the height. suppose
photoshop1234 [79]

we know that

The volume of a cylinder is given by the formula

V=3.14 r^{2} h

where

r is the radius of the cylinder

h is the height of the cylinder

in this problem

r=x+8\\h=2x+3

Substitute the values in the formula above

V=3.14*(x+8)^{2}*(2x+3)

V=3.14*(x^{2}+16x+64)*(2x+3) \\ V=3.14 *(2x^{3} +3x^{2} +32x^{2} +48x+128x+192)\\ V=3.14*(2x^{3} +35x^{2} +176x+192)

therefore

<u>the answer is</u>

The volume of the can is equal to

V=3.14 *(2x^{3} +35x^{2} +176x+192)\ units ^{3}


5 0
3 years ago
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