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1 year ago

Solve multi-step equations addition practice -5(6x+6)=30

Mathematics

1 answer:

Oksi-84 [34.3K]1 year ago

8 0

Answer:

$\large\boxed{x=-2}$

Step-by-step explanation:

How to solve equations?

To solve equations we use four mathematical operations: Addition, Subtraction, Multiplication and Division. Most of the time, two or more of these operations will be needed.

The first operation to be used in this equation is Multiplication. What's going to be multiplied is $-5$ by $6x+6$ :

$-5(6x+6)=30$

$-30x-30=30$

→ Add $30$ to both sides.

$-30x=60$

→ Divide $-30$ into both sides.

$-30x=60$

$-x=2$

→ Multiply both sides by $-1$ .

$x=-2$

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ki77a [65]

Answer:

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Step-by-step explanation:

We are going to assume that you can order your pizza with 1 to 7 ingredients.

If you want to choose 1 ingredient out of 7 you have 7 ways to do so.

If you want to choose 2 ingredients out of 7 you have C₇,₂= 21 ways to do so

If you want to choose 3 ingredients out of 7 you have C₇,₃= 35 ways to do so

If you want to choose 4 ingredients out of 7 you have C₇,₄= 35 ways to do so

If you want to choose 5 ingredients out of 7 you have C₇,₅= 21 ways to do so

If you want to choose 6 ingredients out of 7 you have C₇,₆= 7 ways to do so

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So, in total you have 7 + 21 + 35 + 35 + 21 +7 + 1 = 127 ways of selecting ingredients.

But then you have 3 different options to order cheese, so you can combine each one of these 127 ways of selecting ingredients with a single, double or triple cheese in the crust.

Therefore you have 127 x 3 = 381 ways of combining your ingredients with the cheese crust.

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3 years ago

Find the exact values of cos 3 pi/4 radians sin 3 pi/4 radians HELP!

bixtya [17]

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Download docx

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Answer:

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