MATHEMATICS MIDDLE SCHOOL

Which monomial is perfect cube?
1x^10
8x^8
9x^9
27x^15

Answers

Answer 1
Answer:

Answer:

Step-by-step explanation:

27x^15 can be rewritten as (3x^5)^3, which is a perfect cube.

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5+(x−11)=5x−14. What is x?

Answers

Answer:

x = 2

Step-by-step explanation:

3x+5y=10. 5x+7y=10 system of equations

Answers

3x + 5y = 10....multiply by 5
5x + 7y = 10 ...multiply by -3
------------------
15x + 25y = 50 (result of multiplying by 5)
-15x - 21y = -30 (result of multiplying by -3)
-----------------add
4y = 20
y = 20/4
y = 5

3x + 5y = 10
3x + 5(5) = 10
3x + 25 = 10
3x = 10 - 25
3x = -15
x = -15/3
x = -5

solution is (-5,5)

Ann bought 6 CDs that were each the same price. Including sales tax, she paid a total of 93.60. Of that total, 4.20was tax. What was the price of each CD before tax?

Answers

If you do 93.60-4.20=89.40. Then you do 89.40 divided by 6= 14.90 so each cd before tax would be $14.90.

What is the perimeter of a hexagon that has equal sides of 12 inches ? A . 60 inches B. 66 inches C. 72 inches D . 84 inches

Answers

Hexagon has 6 sides. If each side is 12 inches long, just multiply 6 by 12 and you will get 72 inches, which is choice C.

Identify the hypothesis of the following conditional statement: If an angle measures 120°, then it's an obtuse angle. Question 12 options: A) An angle doesn't measure 120°. B) It isn't an obtuse angle. C) It's an obtuse angle. D) An angle measures 120°.

Answers

Answer: Option D.

Step-by-step explanation:

The "skeleton" of a logic statement is usually:

If "something true" then "this is also true"

Where the correct way to write this is:

"if hypothesis" then "conclusion".

Or

"Conclusion" only if "hypothesis"

There are other ways to write a logical statement, but this gives a general idea.

The hypothesis is the part of a logical statement that gives the premise on which the conclusion is based.

Now, in our statement we have:

If an angle measures 120°, then it's an obtuse angle.

Here the premise, the thing that needs to be true "first" in order to go to the conclusion, is "an angle measures 120°"

Then the correct option is D.

Answer:

D

Step-by-step explanation:

What is equivelent to
4d+6+2d

Answers

The value of the equation 4d + 6 + 2d is A = 6 + 6d

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

A = 4d + 6 + 2d   be equation (1)

On simplifying the equation , we get

A = 4d + 2d + 6

A = 6d + 6

A = 6 ( d + 1 )

Therefore , the value of A is 6d + 6

Hence , the value of the equation is A = 6d + 6

To learn more about equations click :

brainly.com/question/19297665

#SPJ2
We can add like terms. Like terms are when the variables are alike, so you can add them to get a simpler form of your expression.equation.
4d and 2d are like terms, therefore, we can add them.

6d+6 is what we are left with.

Our final answer: 6d+6 is equivalent to 4d+6+2d
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