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2 years ago

9m + 7n2 - 4 + 6m + 5

Mathematics

1 answer:

Ksivusya [100]2 years ago

8 0

Answer:

15m+7n2+1

Step-by-step explanation:

You can add 9m and 6m. Then you will get 15m. Then you would add -4 and 5, you would get 1. So the new equation would be the answer. Since 7n2 doesn’t have another variable to connect to.

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Why is this a parallelogram?

Aleks [24]

Answer:

b both pairs of opposite sides are parallel

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3 years ago

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Is is square root of 1.6875 a rational number

mamaluj [8]

Question:

Is square root of 1.6875 a rational number ?

Answer:

Square root of 1.6875 a rational number is not a rational number

Solution:

Given that we have to find square root of 1.6875 and determine if it is rational number or not

Let us first find square root of 1.6875

$\sqrt{1.6875} = 1.29903810568$

Let us understand about rational number

A rational number is a number that can be expressed as a fraction (ratio) in the form $\frac{p}{q}$ where p and q are integers and q is not zero.

When a rational number fraction is divided to form a decimal value, it becomes a terminating or repeating decimal.

So the number 1.29903810568 is not a rational number

In other words we can say,

Only the square roots of square numbers are rational. Here 1.6875 is not a perfect square. So it is not rational number

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3 years ago

If x-1/x=5 find x^3+1/x^3=?

ipn [44]

$\dfrac{x-1}{x}=5\ \ \ \ /x\neq0\\\\\dfrac{x-1}{x}=\dfrac{5}{1}\ \ \ \ |\text{cross multiply}\\\\5x=x-1\ \ \ \ |-x\\\\5x=1\ \ \ \ |:5\\\\x=0.2\\\\\dfrac{x^3+1}{x^3}=\dfrac{x^3}{x^3}+\dfrac{1}{x^3}=1+\dfrac{1}{x^3}\to1+\dfrac{1}{0.2^3}=1+\dfrac{1}{0.008}\\\\=1+\dfrac{1}{\frac{8}{1,000}}=1+\dfrac{1,000}{8}=1+125=126\\\\\text{Answer:}\ \dfrac{x^3+1}{x^3}=126$

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To find the percent, you have to divide 24/6
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8th Grade Math Equation. Please help! I accept any type of help!

muminat

Hello from MrBillDoesMath!

Answer:

Positive x-intercept = + sqrt(3)

Negative x-intercept = - sqrt(3)

Discussion:

Generally, the x-intercept of a function g(x) occurs where g(x) = 0. In our case this is

g(x) = 0 =>

3x^2 - 9 = 0 => (add 9 to both sides of the equation)

3 x^2 = 9 => (divide both sides by 3)

x^2 = 9/3 = 3 =>

x = +\- sqrt (3)

Positive x-intercept = + sqrt(3)

Negative x-intercept = - sqrt(3)

Thank you,

MrB

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3 years ago