Need help !!!! thanks

Solve for x in first equation:

x-2y=7

Add “2y” to both sides

x=2y+7

Put this in to second equation:

3(2y+7)+2y=21

Solve for y:

Distribute the 3 into the ()

6y+21+2y=21

Combine the like y terms

8y+21=21

Subtract 21 from both sides

8y=0

Divide by 8 on both sides

y=0

Put this into the first solved equation:

x=2(0)+7

Solve for x:

Multiple 2(0)

x=0+7

Add 0 and 7

x=7

So the value of x is positive 7.

Answer:

7200 word in 1 hour

Step-by-step explanation:

360/3 to get how many words she can read in a minute which is 120.

Then times it by 60 (60 mins in an hour) to get the total amout of words she reads in an hour. 120 x 60 = 7200 words.

Step-by-step explanation:

To convert a decimal to a fraction, place the decimal number over its place value. For example, in 0.6 , the six is in the tenths place , so we place 6 over 10 to create the equivalent fraction , 6 / 10

Answer:

C.

Step-by-step explanation:

I got this correct!

Answer:

Instead of moving right 4 times and up 7 times, John moved left 4 times and down 7 times.

Step-by-step explanation:

(x + 4, y + 7) = Right 4, Up 7

NOT

(x - 4, y - 7) = Left 4, Down 7

Answer:

The transformation rule should be applied to the pre-image.  The application of the rule results in the point (8, 12).  The transformation rule was applied to the wrong point.

Step-by-step explanation:

Sample Response:The pre-image is the point you start with. To check the transformation rule, substitute the values of the coordinates (4, 5) into the rule. You get (4, 5) → (4+4, 5+7). Simplify to get (4, 5) → (8, 12). This is the image. Instead the rule was applied to the image. This is the source of the error.

Answer:

2

Step-by-step explanation:

x+16=9x

x-9x=-16

-8x=-16

x=2

+16=9

x+16=9xx+16=9x

Solve

Subtract

16

1616

from both sides of the equation

+16=9

x+16=9xx+16=9x

+16−16=9−16

Simplify

Subtract the numbers

=9−16

x=9x-16x=9x−16

Subtract

9

9x9x

from both sides of the equation

=9−16

x=9x-16x=9x−16

−9=9−16−9

Simplify

Combine like terms

Combine like terms

−8=−16

Divide both sides of the equation by the same term

−8=−16

-8x=-16−8x=−16

−8−8=−16−8

Simplify

Cancel terms that are in both the numerator and denominator

Divide the numbers

x=2

Answer:

X2 + 5 X + 6 = 0

Step-by-step explanation:

the 2 is the power of X so dont mistake it for X2

Answer:

Reflection over the y-axis and a translation down two units

Step-by-step explanation:

You can see that the corners of the triangle have been vertically reflected because of their orientation and then you have to think about what that would look like and decide what else was done to the object. With this, we can tell that the object moved down 2 units.

Answer:

ME

Step-by-step explanation:

Answer

The answer is B

Answer:

the ine you have selected is right

Step-by-step explanation:

we know12 inches is 1 foot we can keep going up andsee that 24 inches is 2 and so on

Answer: C correctly converts inches to feet.

Step-by-step explanation:

12 inches is one foot. 12+12 is 24. 12+12+12+12 is 48. And so on

Answer:

A=1/9 or  0.1 b=1/16 or 0.0625 and c=1/4 or 0.24

Step-by-step explanation:

I have already learned how to do those

Answer:

there you go

Step-by-step explanation:

a)3-² = 1/3² = 1/9

b) 4-³ = 1/4³ = 1/64

c) 2-^6 = 1/2^6 = 1/64

Answer:

yes

Step-by-step explanation:

Answer:

sure

Step-by-step explanation:

Answer:

50

Step-by-step explanation:

Bruh

Answer:

8.8-9.1n

Step-by-step explanation:

Add 3.8+5 together to get 8.8, then add -5.1n and -4n to get -9.1n.

Answer:

Step-by-step explanation:

Both the equations that you modelled are correct.

Use the substitution method to solve the system of equations

[tex]R+C = 526\\5R+4C=2327\\[/tex]

Take the first equation

[tex]R+C=526\\C=526-R[/tex]

Now this becomes our third equation and now insert it into our second equation

[tex]5R+4C=2327\\5R+4(526-R)=2327\\5R+2104-4R=2327\\R=2327-2104\\R=223[/tex]

Now insert R = 223 in any equation. Lets insert it into equation number three

[tex]C=526-R\\C=526-223\\C=303[/tex]

So 223 number of roll papers were sold and 303 number of candles were sold.

I have attached the graph below check it out.

Where both the equations of line intersect is our solution thus we can confirm that our answer is correct.

Answer:

D is the correct answer

Step-by-step explanation:

hopes this helps

Answer:

C- $4,822

Step-by-step explanation:

4% of 41300 is 1652

4.5% of 44100 is 1984.5

3% of 39500 is 1185

1185 + 1984.5 + 1652 = 4821

4822 is 1 number away from 4821, which is the closest of all of the choices. Therefore the answer is C- 44,822. If this answer helped you please consider giving it brainliest.

- •Trix•

( Yes I know my -•Trix• is not my user but its what I would change it to if I could but I can't, please address me as Trix while commenting or talking to me here.)

Answer:

Carina made an error in the beginning.

Step-by-step explanation:

Carina didn't do the inverse operation of adding 3.40. She added it to the 5.27 when she shouldve subtracted it. x=2.2 lbs. Hope this helps!

Anwser ( C )

C: Carina should have divided 8.67 by 0.85.

Took the test. Hope this helps

Answer:

[tex]Total = 3\frac{1}{5}ft[/tex]

Step-by-step explanation:

Given

[tex]Pieces = 4[/tex]

[tex]Size = \frac{4}{5}ft[/tex]

Required

Determine the total size of the string

To do this, we multiply the number of pieces by the length of each piece.

[tex]Total = Pieces * Size[/tex]

[tex]Total = 4 * \frac{4}{5}ft[/tex]

[tex]Total = \frac{4 * 4}{5}ft[/tex]

[tex]Total = \frac{16}{5}ft[/tex]

Convert to mixed number

[tex]Total = 3\frac{1}{5}ft[/tex]

Answer:

1

intercepts on the y line

Answer:

The answer is B. 68%

Step-by-step explanation:

the reason I know this is because I took the test and got a 100% on Edmentum so I hope this helps you guys out.

Answer:

y=-.386x + 2.879

Explanation:

For these type of calculations, you would have to use a graphing calculator to use the linear regression function. What this does is, it takes the x & y values given on the chart and it gives you the best possible linear equation for the given data set.

The exact results were:

y = -0.3862928349 + 2.869158879

Answer:

true

Step-by-step explanation:

mark as brainliest  plz

Answer:

True

Step-by-step explanation:

400 + 60 x 90 = 400 + 5400 = 5800

60 x 90 + 400 = 5400 + 400 = 5800

1) A

Equations simplified:

A: y = 2x + 3

B: y = -3x + 3

2) Red is A, Blue is B

Answer:41.43 Euro

there ya go

Answer:

50

Step-by-step explanation:

37.50/3=12.5

12.5*4=50

Answer:

a

Step-by-step explanation:

i just took the test

The explicit formula that represents the situation is [tex]a_{n}[/tex] = 11 + 4n thus option (A) is correct.

A pattern is a specific arrangement of numbers or any term which will follow a specific code or hint.

Another example is 2,4,16,256 in this pattern each term is the square of the previous term and this will become its specific pattern.

As per the given,

Cost of a tie-dye kit + 1 T-shirt = $15

Additional T-shirt = $4

This, means,

Cost of a tie-dye kit + $4 = $15

Cost of a tie-dye kit = $11

The total cost with n number of T-shirts will be as,

[tex]a_{n}[/tex]  = 11 + 4n

Hence "The explicit formula that represents the situation is [tex]a_{n}[/tex] = 11 + 4n".

For more information about the pattern,

brainly.com/question/14013716

#SPJ2

Answer:

A) 11.3°

Step-by-step explanation:

got it right on edge :)

The measure of the angle between the vectors will be 11.3°. Then the correct option is A.

The angle is the distance between the intersecting lines or surfaces. The angle is also expressed in degrees. The angle is 360 degrees for one complete spin.

The angle between the vector is given as,

[tex]\theta = \cos^{-1} \dfrac{u \cdot v}{\left|a \right|\left|b \right|}[/tex]

Given vectors u = (2, -3) and v= (1, -1).

Then the measure of the angle between the vectors will be

[tex]\theta = \cos^{-1} \dfrac{(2, -3)\cdot (1, -1)}{\sqrt{2^2+(-3)^2} \ \sqrt{1^2 + (-1)^2}}\\\theta = \cos^{-1} \dfrac{2 + 3}{\sqrt{13} \sqrt{2}}\\\theta = \cos^{-1} \dfrac{5}{\sqrt{26}}\\[/tex]

θ = 11.3°

Then the correct option is A.

More about the angled link is given below.

https://brainly.com/question/15767203

#SPJ2

Answer:

the answer is c 4

Step-by-step explanation:

Answer:

-14/16

Step-by-step explanation: