3 years ago

How can you isolate the variable in this equation? x + 6 = 13

Mathematics

1 answer:

just olya [345]3 years ago

5 0

Answer:

By subtracting 6 from both sides of the equal sign

Step-by-step explanation:

x + 6 = 13

We solve for x, by getting it alone on the left side.

so:

x + 6 - 6 = 13 - 6

x = 7

You might be interested in

Find the slope of the line passing through the vertex and the y-intercept of the quadratic function

strojnjashka [21]

Find y intercept

y=5(0)²+20(0)-7
y=0-7
y=-7

Point(0,-7)

Find vertex

x coordinate

-b/2a
-20/10
-2

y coordinate

y=5(4)-40-7
y=-27

Vertex at (-2,-27)

Slope

m=(-27+7)/-2-0
m=-20/-2
m=10

6 0

1 year ago

Read 2 more answers

Steve's scores on 6 of his tests were 92, 78, 86, 92, 95, and 91. If he took a seventh test and raised the mean of his scores by

monitta

Answer:

Step-by-step explanation:

First we need to know the mean of the Steve's scores on 6 of his tests. Given the six scores as 92, 78, 86, 92, 95, and 91.

Mean = sum of the scores/Total test taken

Mean = 92+78+86+92+95+ 91/6

Mean = 534/6

Mean = 89

If he took the seventh test and the mean score is raised by 1 them the new mean will be expressed as;

New mean = 92+78+86+92+95+ 91+x/7 = 89+1

Where x is the new score. Note that of a new score is added, the total year taken will also change to 7

To get x;

92+78+86+92+95+ 91+x/7 = 89+1

92+78+86+92+95+ 91+x/7 = 90

534+x/7 = 90

Cross multiply

533+x = 90×7

533+x = 630

x = 630-534

x = 96

Hence the score of the seventh test is 96

8 0

2 years ago

Dakota’s parents will leave Norfolk, VA at 7:30 a.m. on Thursday in their personal vehicle. The average speed the vehicle will t

Nutka1998 [239]

He w many miles are they traveling

8 0

3 years ago

Factor the expression: 625t^5-1715t^2<br> Please show steps!

NeX [460]

Answer:

5 $t^{2}$ (5t-7)(25 $t^{2}$ +35t+49)

Step-by-step explanation:

5 0

2 years ago

Simpify the expression. -2(y + 3) -7y

jenyasd209 [6]

-2y-6-7y
-9y-6
I hope that this helps!

4 0

2 years ago