I need help with this problem

Answer:

m = -2

Step-by-step explanation:

Look at the attached image. First, we divide both sides by 7 to get m + 5 = 3. Now, we subtract 5 from both sides to get m = -2. Now, we substitute m for -2. As we can see, it checks out.

The solution of expression is,

m = - 2

We have to give that,

An expression to solve,

7 (m + 5) = 21

Now, simplify the expression as,

7 (m + 5) = 21

Divide both sides by 7,

m + 5 = 21 / 7

m + 5 = 3

Subtract 5 both side,

m = 3 - 5

m = - 2

So, The solution is, m = - 2

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Answer:

B and D

F also has vertical angles however they haven't been numbered like the others

Answer:

2.5x10^3= 2,500

5x10^6= 5,000,000

Step-by-step explanation:

Here is a great trick that I always keep in mind whenever you are squaring 10 you add that many zeros for example.

10^4= 10000 (there are 4 zeros).

Answer:

Step-by-step explanation:

Sorry to break it to you, but...

That's a line equation my dude. There's no answer.

Answer:

x=4.5 y=0

Step-by-step explanation:

For the x coordinate set y to zero for the y coordinate set x to zero. Example:

0=2x-9

9=2x

4.5=x

Answer:

544 acres

Step-by-step explanation:

There is 100% in a whole.

1% is 1/100th of the whole, or 0.01 of it. We get this because 1/100 = 1/100 = 0.01

Similarly, 0.8/100 = 0.008. We then multiply the decimal by the total to get

(0.008) ( 68000) = 544 acres

Answer:

he used 3\4 im guessing

Step-by-step explanation:

Answer:

Around 7/8 of a gallon

Step-by-step explanation:

Answer:

The first one is c, I’m pretty sure, the second one is a white block, and I don’t fully understand the last question but I’m pretty sure you’re correct

Step-by-step explanation:

Answer:

C. (0,-3)

Blank

D. (4,-5)

Step-by-step explanation:

(-1,-5)is point before translation (+1,+2)

(0,-3) after translation

Ok second one

90 degree counterclockwise rotation about the origin rule

A(x,y) becomes A'(-y,x)

n=(-5,-4) ok so -4 becomes positive 4

(4,-5)

Hope this helps!!

Answer:

22

Step-by-step explanation:

Answer:

m∠ONB = 81°

Step-by-step explanation:

If angle MNJ and angle ONB are congruent and MNJ is 81 degrees and OJ is a straight line then ONB should also be 81 degrees in which the other side is 99 degrees.

Answer:

c

Step-by-step explanation:

its c

Answer: 3h + 0.9s

Step-by-step explanation:

90% is the same as 0.9 of..

Answer:

Step-by-step explanation:

SLOPE IS M

Answer:

205 minutes

Step-by-step explanation:

Step one:

given data

We are told that Luca's goal is to practice violin for 300 minutes in a week

He has practiced 45 minutes and 50 minutes for Saturday and Sunday already

that is in all, 45+50= 95minutes

Required

The remaining minutes of practice

Step two:

the deficit in practice is

300-95= 205 minutes

Answer:

(9-9x) - (3-x)

Step-by-step explanation:

(4x2 -9x +1) - (5x2 -x -7)

4x2+1= 9. 5x2-7= 3

(9-9x) - ( 3-x)

Answer:

D

Step-by-step explanation: your welcome have a good day

Answer:

C.  [tex] \dfrac{1}{3x + 1} [/tex]

Step-by-step explanation:

[tex] \dfrac{x + 2}{x^3 + 2x^2 - 9x - 18} \div \dfrac{3x + 1}{x^2 - 9} = [/tex]

Factor all polynomials.

[tex] = \dfrac{x + 2}{x^2(x + 2) -9(x + 2)} \div \dfrac{3x + 1}{(x + 3)(x - 3)} [/tex]

[tex] = \dfrac{x + 2}{(x^2 - 9)(x + 2)} \div \dfrac{3x + 1}{(x + 3)(x - 3)} [/tex]

[tex] = \dfrac{x + 2}{(x + 3)(x - 3)(x + 2)} \div \dfrac{3x + 1}{(x + 3)(x - 3)} [/tex]

To divide by a fraction, multiply by its reciprocal.

[tex] = \dfrac{x + 2}{(x + 3)(x - 3)(x + 2)} \times \dfrac{(x + 3)(x - 3)}{3x + 1} [/tex]

Cancel out common factors in the numerator and denominator.

[tex] = \dfrac{1}{3x + 1} [/tex]

Answer:

I would think it is 8

Step-by-step explanation:

By assuming the triangles are equal to each other in a way that the larger triangle is the smaller triangle's length times 2. For example, one side of the smaller triangle is 11 so times 2 would be the larger triangle's side. So, by dividing 16 by two, you would get 8. Hope this helped and that I did it correctly!

Answer:

Find square root

a 11×11

B 30×30

C 27×27

Answer:

8x squared

Step-by-step explanation:

all you do is multiply the 4 and 2 to get the 8 and the x's multiply together causing it to square it making it 8x squared

Answer:

b

Step-by-step explanation:

this dosent make sense

Step-by-step explanation:

Answer: (x, y) --> (x, -y)

Step-by-step explanation:

This is a reflection over the x-axis so its only the y-intercept that changes.

Answer:

its a reflection

Step-by-step explanation:

If it were a rotation, it wouldnt have overlapped.

If it were a translation, It would have been the wrong way up and not overlapping.

When reflected over line x, it will overlap because it stays rigid and does not change shape or size.

hope this helps :)

You need to show the question to get the answer. All you can see is the lines...

Answer:

Step-by-step explanation:

    [tex]y=-\frac{3}{4} x+2\\add\frac{3}{4} x to both sides\\y+\frac{3}{4} x=-\frac{3}{4}x+\frac{3}{4} x+2\\y+\frac{3}{4}x=2\\\frac{3}{4} x+y=2[/tex]

Please mark me as brainliest!

Answer:

I am assuming you want the percentage increase in the price.

Step-by-step explanation:

The percentage increase is ( 15/50) * 100

= 15 * 2

= 30%.

Answer:

She will run 3 1/3 miles in 2 days

Step-by-step explanation:

1 2/3 + 1 2/3 = 2 4/3

= 3 1/3

Answer:

10/3 and mixed fraction is 3 1/3

Step-by-step explanation: