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pashok25 [27]
3 years ago
9

If 7(x+5) = -28 find the value of 6x

Mathematics
2 answers:
elixir [45]3 years ago
8 0
Answer:

-54

Explanation:

First we need to use the distributive property on 7(x+5), so do 7×x + 7×5. Simplify that and you get 7x+35.

Subtract 35 from both sides and you get 7x= -63. Divide both sides by 7 and you get x= -9.

Now we can substitute -9 for x, so do 6×-9 and you get -54.

Hope this helps :)
agasfer [191]3 years ago
6 0

7(x+5)=-28\\7x+(7*5)=-28\\7x+35=-28\\7x+35-35=-28-35\\7x=-63\\\frac{7x}{7}=\frac{-63}{7}\\x=-9\\\\6x=-54

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Triangle IJK is similar to triangle LMN. Find the measure of side LM. Round your answer to the nearest tenth if necessary.
Andre45 [30]

Answer:

It's either 39.2 or 39.3 (a more accurate answer) because it depends on what you round by. since it's Delta Math, you should get 2 attempts.

Step-by-step explanation:

Since they are similar, they are proportional.

54/11=4.90909091 or 4.9

Multiply 11 by 4.90909091 and you get 54

Multiply 8 by 4.90909091 and you get 39.3

if you multiply by 4.9 you get 39.2

8 0
2 years ago
Need help quick please thanks
Sloan [31]

Start by FOILing: First, Outer, Inner, Last.

3x•x= 3x^2; 3x•2= 6x; 2•x= 2x; 2•2= 4

Put it all together

3x^2 + 6x + 2x + 4

Combine like terms to get your answer

3x^2 + 8x + 4

8 0
3 years ago
Please help!!!!!!!!!
saul85 [17]

Answer:

ascending order:

angle KLM

angle KML

angle LKM

Step-by-step explanation:

angle opposite to the largest side is the largest angle:

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angle opposite to the smallestest side is the smallest angle:

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3 0
2 years ago
Write the algebraic expression for the difference between the squares of two numbers.
V125BC [204]

The algebraic expression for the difference between the squares of the two numbers, supposing the two numbers to be a and b, is

a² - b² = (a + b)(a - b).

An algebraic expression is a combination of terms, where the terms are separated using mathematical operators like plus (+), minus (-), multiply (*), and divide (/).

The terms are combinations of numerals and variables.

Variables are represented alphanumerically, which can hold any value as per the expression they are used in.

In the question, we are asked to write the algebraic expression for the difference between the squares of two numbers.

We assume the two numbers to be a and b respectively.

Thus, we are asked to write an expression for the difference between the square of a and square of b, that is, we are asked to write an expression for a² - b².

We know that a² - b² is an identity, which can be shown as (a + b)(a - b).

Thus, the algebraic expression for the difference between the squares of the two numbers, supposing the two numbers to be a and b, is a² - b² = (a + b)(a - b).

Learn more about algebraic expressions at

brainly.com/question/2241589

#SPJ4

6 0
2 years ago
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iogann1982 [59]

Answer:

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Step-by-step explanation:

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