Please explain! I don't know which number to isolate
Please explain! I don't know which number to isolate - 1

Answers

Answer 1
Answer:

Answer:

X=2 Y=-2 for 3x+y=4   X=2 Y=2 for x-3y=-4

Step-by-step explanation:

3x+(-2)=4

3x2+(-2)=4

6+(-2)=4


X-3y=-4

2-3x2=-4

2-6=-4


Hope this helped!



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I need help please anyone 10(x-2)+15=8x+7

Answers

10(x−2)+15=8x+7

 Simplify

10(x−2)+15=8x+7

(10)(x)+(10)(−2)+15=8x+7(Distribute)

10x+−20+15=8x+7

(10x)+(−20+15)=8x+7(Combine Like Terms)

10x+−5=8x+7

10x−5=8x+7

Subtract 8x from both sides.

10x−5−8x=8x+7−8x

2x−5=7

Add 5 to both sides.

2x−5+5=7+5

2x=12

Divide both sides by 2.

2x/2 = 12/2

x=6

True or False 5 is a factor of 30

Answers

Answer:

True

Step-by-step explanation:

5 goes into 30 six times

Answer: its true 5 goes in 30 six times

5x6=30

Step-by-step explanation:

Trina spent $30 for general admission at an amusement park. Each ride cost $2.50. She spent a total of $67.50. What arithmetic steps can you use to find how many rides Trina rode?
A. Divide 67.5 by 2.5, add 30 to the quotient.
B. Add 67.5 and 30, divide the sum by 2.5.
C. Subtract 30 from 67.5, divide the difference by 2.5.
D. Multiply 30 by 2.5, subtract 67.5.

Answers

C) Subtract 30 from 67.5, divide the difference by 2.5

Answer:

c

Step-by-step explanation:

What is the value of the expression shown when n=6?"8 less than the quotient of 42 and a number"
42
8-
o when n-6 the expression equals 1
-8; when n= 6 the expression equals -1
42-8n; when n = 6 the expression equals -6
8n-42; when n-6 the expression equals 6

Answers

Answer:

Step-by-step explanation:

8 less then the quotient of 42 and a number

a " quotient " is the result of division

(42 / n ) - 8.....when n = 6

(42/6) - 8 =

7 - 8 =

-1

so when n = 6, the expression = -1

Answer:

B

Step-by-step explanation:

EDGE 2021

3/4 + 7/12 - (-4)

PLZZZZZZZ help solve the problem

Answers

3/4+7/12(−4)
4/3−(−4)
Answer:
16/3

I hope this helps!
Well 3/4 + 7/12 is 1/16 and that minus -4 is 4 1/16, and you can just round that to 4.

Order the following from greatest to least: -12,12,-19,1 and 1/2,5.....

Answers

-19, -12, 1/2, 1, 5, 12 ----> least to greatest
12, 5, 1, 1/2, -12, -19 ----> greatest to least

Do the same as the last one, starting with the largest negative number, and ending with the largest positive number.  The only difference in this case is that it is greatest to least.  I tend to go from least to greatest first and then flip it around to get greatest to least (: