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2 years ago

If x=3y substitute the value of x into expression simplify 3x+6

Mathematics

1 answer:

Nutka1998 [239]2 years ago

3 0

Answer:

(3y)3+6

Step-by-step explanation:

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Which expression is equivalent to 6a + 15?

12345 [234]

Answer:3(2a+5)

6a+15 divide both sides by 6

a=2.5

Step-by-step explanation:

5 0

3 years ago

Can someone help with this problem?

Sindrei [870]

Answer:

the awnser is 8 would you want me to do an explanation also?

4 0

3 years ago

PLEASE HELP!!!<br> Solve the inequality: <br> 5 (2x-3) - 6x > -2 (x - 6) +3

jeyben [28]

Answer:

x>5

Step-by-step explanation:

Step 1: Simplify both sides of the inequality.

4x−15>−2x+15

Step 2: Add 2x to both sides.

4x−15+2x>−2x+15+2x

6x−15>15

Step 3: Add 15 to both sides.

6x−15+15>15+15

6x>30

Step 4: Divide both sides by 6.

3 0

2 years ago

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HELP 1x3 divided by 56 then multiply that by 9

Sloan [31]

Answer:

0.48

Step-by-step explanation:

1x3/56 then multiply it by 9

1x3 is 3

3 x 9 = 27

27/56 this fraction cant be reduced so if you count it or put it in a calculator you'll get 0.482143

8 0

3 years ago

Use the Counting Principle to find the probability. Choosing the 7 winning lottery numbers when the numbers are chosen at random

frozen [14]

Answer: 120

<u>Step-by-step explanation:</u>

Since the order of the numbers doesn't matter we can use the formula:

$\dfrac{n!}{r!(n-r)!}\quad \text{where n is the quantity of items and r is the quantity chosen}\\\\\text{In this problem, there are 10 numbers (n = 10) and 7 to be chosen (r = 7)}\\\\_{10}C_{7}=\dfrac{10!}{7!(10-7)!}\\\\.\qquad=\dfrac{10!}{7!3!}\\\\.\qquad=\dfrac{10\times 9\times 8\times 7!}{7!\times 3\times 2\times 1}\\\\.\qquad=10\times 3\times 4\\\\.\qquad=120$

7 0

2 years ago

Read 2 more answers