Mathematics High School

2x + 5y = -24
3x - 5y = 14
Solve by elimination
y and x

Answers

Answer 1

Answer:

x = -2

y = -4

Step-by-step explanation:

The way systems of equations  work is that you have to substitute to solve for a variable *(only one of the 2 ways to figure this out)*

so, we will use addition property of equality in a form to add the two equations together, since +5y and -5y added together will cancel out.

that would leave

5x = -10

divide both sides by 5

x = -2

Now that we know x = -2, we can plug in -2 into one of the equations to find y.

2 ( -2)  + 5y = -24

-4 + 5y = -24

-4 + 4 + 5y = -24 + 4

5y = -20

y = -4

x = -2

y = -4

Related Questions

Potatoes are on sale at both grocery mart and Baldwin hill market and grocery mart a 5lbs bag cost 2.85 and Baldwin they a 7lbs bag cost 4.20

Answers

Answer

The first one

Step-by-step explanation:

I think you want to know which store is better so it is

1-4.2x + 3y - 9 + 5x + y

how many terms are in this expression

Answers

Answer:

because

Step-by-step explanation:

Answer:
6 terms assuming that 1-4.2x are separate if not it would be 5.

Expanded: This makes this equation a polynomial.

Can y’all plz help me
Explain yo answer for brainliest

Answers

Answer:

A

Step-by-step explanation:

Answer:

C)

Step-by-step explanation:

The pythagorean theorem says that a^2 + b^2 = c^2

In this case:

a^2 = x

b^2 = y

c^2 = z

That means x + y = z, which is C


Which measure is of an angle that is coterminal with a 95° angle?

Answers

Answer:

95° - (1,080 n) °, for any integer n

Step-by-step explanation:

Co-terminal angle are those angles who share the same initial side and terminal sides,

And, these angles are obtained by adding or subtracting the multiple of 360°,

That is, if Ф is an angle,

Then its co-terminal angles are,

Ф + 360 n

Where, n is any integer (negative or positive)

Here, Ф = 95°,

Since, n is an integer,

⇒ - 3n is an integer,

Thus, the co-terminal angles of 95° are,

95° + 360° (-3n)

= 95° - (1080 n) °; for any integer n.

Step-by-step explanation:

Hope this helps!~

And I hope this is what you where looking for.

Good Luck!~

Answer:

B. 95° – (1,080n)°, for any integer n

Step-by-step explanation:

Correct on EDGE 2021!

what is the midpoint between (1,5) and (7,-3)​

Answers

Answer:

(4,1)

Step-by-step explanation:

[tex]Midpoint=(\frac{x_{1}+x_{2}}{2},\frac{y_{1}+y_{2}}{2})\\[/tex]

               [tex]=(\frac{1+7}{2},\frac{5-3}{2})\\\\=(\frac{8}{2},\frac{2}{2})\\\\=(4,1)[/tex]

the answer for this problem would be 4,1

yes or no? please help!!

Answers

Answer:

No it is not

Step-by-step explanation:

One cannot have two outputs

Please mark me brainlest!!

help anyone I don’t understand

Answers

Answer:

D. 71

Step-by-step explanation:

Plug 7 into f

(7)^2 + 2(7) + 8

then solve

49 + 14 + 8

      71

Evaluate the expression when n = 2.3. 5(n − 2) + 9 =

Answers

Answer:n=2.3.5(n-2)+9=n=44.6

Whoever fills the rest out I’ll love you forever!

Answers

Answer:i need to know what the image is.....

Step-by-step explanation:

what is the additive inverse of 3x - 6

Answers

Answer:

-18

Step-by-step explanation:

Which point best indicates the location of V45on the number line below?
A.Point A
B.Point B
C.Point C
D. Point D

Answers

Point d because the v45 amount it’s parole to this number:(-272on)::

What is the surface area of this design?
5 in.
256 in2
160 in2
8 in.
96 in2
4 in.
288 in2
4 in.
8 in.

Answers

Answer:

Pretty sure its 256 in2

Step-by-step explanation:

did the iready test

By decomposing the design into two rectangular prisms, the surface area of the design is calculated as: A. 256 in.²

What is the Surface Area of a Rectangular Prism?

The surface area of a rectangular prism is expressed as, S = 2(lw + lh + wh).

The design can be decomposed into top rectangular prism and bottom rectangular prism.

The surface area of the design = surface area of the top rectangular prism + surface area of the bottom rectangular prism - 2(area of the top rectangular prism that joins the bottom rectangular prism)

Surface area of the top rectangular prism = 2(lw + lh + wh) = 2(5×4 + 5×4 + 4×4) = 112 in.²

Surface area of the bottom rectangular prism = 2(lw + lh + wh) = 2(8×5 + 8×4 + 5×4) = 184 in.²

Area of the top rectangular prism that joins the bottom rectangular prism = l × w = 5 × 4 = 20 in.²

The surface area of the design = 112 + 184 - 2(20) = 256 in.²

Learn more about surface area of rectangular prism on:

https://brainly.com/question/1310421

#SPJ5

this is due in 4 hours plus i have 5 classes left please help

Answers

Answer:

Onaje is correct.

Step-by-step explanation:

To start, total up how many shirts we have, and multiply them by t. Since they are the same price, we now have a total for how many shirts they bought. This proves the second and third equations that they wrote. If you take the easy way and just add them, you'll still have 25t, making Onaje's expression correct.

EDIT: Just saw you need why it's incorrect for Paula, just hold on.

So for Paula, it's simple why she is incorrect. If you look at the third equation she wrote, she's adding 25 to 2t, which is completely incorrect, and will come up with a different result than 16t + 9t.

Hope this helps.

i need help with geometry

Answers

Answer:

x = 119, y =  55

Answer:

x = 119°

y = 55°

Step-by-step explanation:

y + 125 = 180         {linear pair}

       y   = 180 - 125

       y = 55°

Sum of all the angles of quadrilateral = 360

x + 55 + 72 +114 = 360

               x + 241 = 360

                         x = 360 - 241

                        x = 119°

The domain of y = cot x is all real numbers such that _______.

Answers

Answer:

Step-by-step explanation:

x≠ n*π, where n is an integer

because x/π can not be an integer

Which equation shows how to rewrite the sum of 30 and 45 using their greatest common factor? 30 + 45 = 5(6 + 9) 30 + 45 = 15(2 + 3) 30 + 45 = 5(6) + 15(3) 30 + 45 = 5(6)(3)

Answers

Answer: 30 + 45 = 15(2 + 3)

Step-by-step explanation:

The greatest common factor for 30 and 45 will be gotten as follows:

Factor of 30 = 2 × 3 × 5

Factor of 45 = 3 × 3 × 5.

GCF = 3× 5 = 15

Therefore, the equation that shows how to rewrite the sum of 30 and 45 using their greatest common factor will be:

30 + 45 = 15(2 + 3)

I urgently need help!!!!

Answers

Answer:

A. C (3,5)

Step-by-step explanation:

This makes the most sense because of the position point C is at on the coordinate plane. It is above point D, which has a x-axis of 3. Option A is the only one that has an x-axis of 3.

Hope it helps!

PLEASE HELP QUICKLY!!!

Answers

Answer:

sunday

Step-by-step explanation:

i dont want brainliest give it to the other guy

Determine the slow & y-intercept for the line shown. Then write the equation . If you hurry I’ll mark brainliest

Answers

Answer:

y = 3x + 4

Step-by-step explanation:

slope is 9/3 simplified to 3

y intercept is 4

-2y+3=22 y-5=3 elimination method

Answers

Answer:

Not possible

Step-by-step explanation:

You cannot do an elimination method because there is no x

Change 273° Kelvin to Celsius degrees.
P Leeeeeeeeeeee Sssssssssss help me

Answers

Answer: 273 degrees kelvin =  -0.15 degrees celsius

hope this helps brainliest plz

percent as a decimal or fraction. 54% of 85

Answers

Answer: 45.9

Step-by-step explanation: its right trust

Answer:

45 9/10 0r 45.9

Step-by-step explanation:

0.54 * 85

45.9

45 9/10

Evaluate 35/a when a=7. The value is​

Answers

Answer:

a = 5

Step-by-step explanation:

a = 7

35/a

35/(7)

= 5

Hope this helped

8.35 < 3x +18.75
Pls help

Answers

Step-by-step explanation:

8.35 < 3x + 18.75

3x + 18.75 > 8.35

3x > 8.35 - 18.75

3x > -10.4

x > -3.47

Is the following relation a function?

Answers

Answer:

no

Step-by-step explanation:

the x value (-1) repeats therefore it ain't a function

No it is not a function

Se tienen 240 cajas con 25 bolsas cada una . Si cada bolsa pesa 0.69 kg. Cual es el peso del cafe?

Answers

Answer:

Step-by-step explanation:

There are 240 boxes with 25 bags each. If each bag weighs 0.69 kg. What is the weight of coffee?

Simplify 2.19g + 0.59b + 1.49p

Answers

Answer:  it can't be simplified,,, the variables are all different

Step-by-step explanation:

Solve the equation: х -5 = (-13)
6 ​

Answers

Answer:

-73

Step-by-step explanation:

6 x (-13) = -78

x - 5 = -78

x = -78 + 5

x = -73

Evaluate the expression for h = –4. Simplify your answer. h + 16 h =

Answers

Answer:

-68

Step-by-step explanation:

-4-64

-68

I need help with Geometry

Answers

I think the correct answer would be B
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