Mathematics High School

-4x - 2y = -12
4x + 8 = -24
solving systems of equations by elimination

Answers

Answer 1

Answer:

Step-by-step explanation:

Since one equation has -4x and the other has 4x one can simply add the equations together to eliminate the variable x.

4x+8-4x-2y=-24-12

8-2y=-36 subtract 8 from each side

-2y=-44 divide each side by -2

y=22, and since 4x+8=-24

4x=-32 divide each side by 4

x=-8, so the solution is at the point

(-8,22)

Answer 2

Answer:

-4x - 2y = -12

4x + 8 = -24      typed incorrect should be 4x + 8y = -24

Step-by-step explanation:

add the two equations all like terms

-4x - 2y = -12

4x + 8y = -24

-4x + 4x = 0x

-2y + 8y = 6y

-12 + -24 = - 36

now reconstruct the equation

0x + 6y = -36

       6y = -36

        y  = -36/6             <----------------------   Final Answer is y = -6

Find x

-4x - 2y = -12

-4x = -12 +2y

-2x  = -6 + y                     divide both sides by -2

   x = (-6+y)/-2                 plug in -6 for y

   x = (-6 + -6) / -2

   x = -12 /-2

   x = 6    <----------------------   Final Answer is x = 6

checking answer for x=6 and y= -6

-4x - 2y = -12    -4(6) - 2(-6)      =     - 24 + 12   = -12        -12 = -12

4x + 8 = -24      4(6) + 8(-6)      =       24 + -48 = -24       -24 = -24

Related Questions

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x=??

Answers

x = 12? Good luck though

Answer:

relationship between base and hypotenuse is given by cos angle

cos ?=base/hypotenuse

cos?=14/26

?=cos-¹(14/26)=57.42=57

A recipe calls for 2 cups of butter for every 5 cups of flour. Question 1 Part A What is the ratio of flour to butter? Write the ratio in three different ways. Do not simplify the ratios. Enter the correct answers in the boxes.

Answers

Answer:

The answer is 5:2 5 to 2 5/2.

Find the slope and y-intercept for the equation that passes through
these two points.
(2, 5) and m = 3
i need help on this question(2,5) and m=3 slope and y-intercept

Answers

Answer:

The slope is 3 and the y-intercept is -1.

Step-by-step explanation:

y-y1=m(x-x1)

y-5=3(x-2)

y=3x-6+5

y=3x-1

y=mx+b where m=slope and b=y-intercept.

SAS, SSS, ASA, or AAS?

Answers

Answer:

SAS

Step-by-step explanation:

Side ST = Side Gp

angle p = angle t

and side PM = side MT

Therefore the congruency statement shows

Side

Angle

Side

aka SAS

Which expression means the same as "subtract 3 from 7 and then multiply by
4"?
4 x (7 – 3)
7-3x4
7 – (3 x 4)
4 x 7 – 3

Answers

Answer:

4 x (7 - 3) is the correct option

Answer:

4 x (7 - 3)

Step-by-step explanation:

So you take away 3 from the sum of which you got from 7x4

How many buckets are filled with one quart of water

Answers

Answer:

only one because one quart is one fourth

I need an answer now!!​

Answers

Pic is kinda blurry so I can’t really answer sorry

how to make 18.2% in to decimal​

Answers

Answer:

move the decomal 2 places to the left

.182

Step-by-step explanation:

Answer: 18.2% as a decimal is 0.182

Step-by-step explanation: To make a percent into a decimal always simply move the decimal point in the percent two places to the left and remove the percent!:)

True or false? In a two-column proof, the left column contains a series of deductions. A. True B. False

Answers

Answer:

True

Step-by-step explanation:

!!!!!can someone help me!!!!!

Answers

type up algebra calculator

Step-by-step explanation:

www.mathpapa.com › algebra-calcu...

Algebra Calculator - MathPapa

Please help! Will give Brainliest. (Photo below)

Answers

Hi! So I got :
-3 —>20
-2 —>13
-1 —>8
0 —>5
1 —>4
2 —>5
3 —>8
I’m sorry if any of these are wrong but In order to find the answers I used the “graphing quadratics” one (don’t know the name so sorry) but yeah first I found the axis of symmetry which was 1 and from there I built a chart and substituted. Again, I didn’t see some answer choices above in the image so sorry if there wrong, but yeah I hope this helped! (This is from algebra 1 by the way)

In ΔIJK, k = 64 inches, j = 17 inches and ∠J=68°. Find all possible values of ∠K, to the nearest 10th of a degree.

Answers

Answer:

N/A  (if on delta math leave blank)

Step-by-step explanation:

(3.4905745)=ERROR

Sine cannot be greater than 1.

The given conditions cannot form a triangle, there is no possible value of K.

What is sine law?

In trigonometry, the law of sines, sine law, sine formula, or sine rule is an equation relating the lengths of the sides of any triangle to the sines of its angles.

Given that, in a triangle Δ IJK, k = 64 inches, j = 17 inches and ∠J = 68°.

We need to find value of ∠K,

So, using the sine law,

Sin K / k = Sin J / j = Sin I /i

So,

Sin K / k = Sin J / j

Sin K / 64 = Sin 68° / 17

Sin K = 3.5

K = Sin⁻¹(3.5)

K = ERROR

Hence, the given conditions cannot form a triangle, there is no possible value of K.

Learn more about sine law, click;

https://brainly.com/question/17289163

#SPJ2

What kind of triangle is this 51 degrees 72 degrees 57 degrees

Answers

Answer:acute

Step-by-step explanation:

f(x)=x2+3x and g(x)=2x2, find (f ∘ g)(−1).?? ?//

Answers

Answer:

20

Step-by-step explanation:

f(x)=x2+3x and g(x)=2x2, find (f ∘ g)(−1)

f(x)= (-1)(2) +3 (-1)= -2+-3= -5

g(x)= 2 (-1)2= -4

(f ∘ g)= -5 x -4= 20

You deposit $1600 in a bank account. Find the balance after 3 years if account pays 4.2% annual interest. Round your answer to the nearest integer (whole number).

Answers

Answer:

1810

Step-by-step explanation:

HELPPP!!
What is the domain of the relation {(-2, 4), (1, 3), (0, -4), (3, 2)?

Answers

9514 1404 393

Answer:

  {-2, 0, 1, 3}

Step-by-step explanation:

The domain is the list of the x-values in the (x, y) pairs:

  {-2, 0, 1, 3}

Ali and Tyler are 50 when you add up their ages. Ali is 8 years younger
than Tyler. How old is Tyler? *

Answers

Answer:

33

Step-by-step explanation:

while Tyler is 33 ali will be 17

33 Tyler is 33 while Ali is 17

Side of a square = 10 m; Perimeter=_____



CAN SOMEONE PLS TELL ME THE ANSWER WITH AN EXPLANATION?!

Answers

ANSWER: 40 m

EXPLANATION: a square has four equal sides, and perimeter is the sum of these sides

since one side is 10 m, we can multiply this by four:

10 m x 4 = 40 m

HELPPP PLEASE
The percent equation is___
1. whole = part x percent
2. part = percent x whole
3. part = percent / whole
Thank youuu

Answers

You are very much welcomed
It should be 3 lmk if it’s wrong

Jane drives 80 miles in
2 hours. How many miles
could she expect to drive
in 5 hours?

Answers

Answer:

200 miles I think

Step-by-step explanation:

80÷2=40

meaning 40 miles per hour, so 40×5=200

Tori bought 5 t-shirts for $35. If each t-shirt costs the same amount, how much would Tori pay for 20 t-shirts

Answers

Answer:

140

Step-by-step explanation:

140 is the answer let me know if it help

Find the value of -4a³ + 6b²

when a = 2 & b = 4​

Answers

Answer:

ANSWER=64

Step-by-step explanation:

-4* 2^3= - 32

6*4^2=96

total= 64

It is 64 and here is my work!! <3

please help me and please explain thank you

Answers

C, because it should always sum up to 180. 38+38+104= 180

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Answers

Answer:

x=129.70588235294

Step-by-step explanation:

..........

One day 197 Eagle Ridge students went on a field trip. Five busses were filled with the same number of students, and two students traveled separately by car. How many students were on each bus?

Answers

Answer: 39 students

Step-by-step explanation:

First, remove the number of students who traveled by car from the total number so we can see the number of students who traveled by bus:

= 197 - 2

= 195 students by bus.

These 195 students traveled in 5 buses. The number of students on each bus is therefore:

= No. of students traveling by bus / No. of buses

= 195 / 5

= 39 students

Please help thank you so much

Answers

Answer:

x=90

inscribed angle from the diameter is complement

Answer:

x = 90.

Step-by-step explanation:

Diameter formed the angle with circumeference is 90.

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Answers

Answer:

it's the first one

Step-by-step explanation:

since all of them go up to 8 on the graph it

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y = x² - 8x-1

Answers

Answer:

The vertex is (4,-17)

Step-by-step explanation:

Vertex is (4,-17) hope this helps!

NEED HELP ASAP WILL GIVE BRAINLY

Answers

Answer:

D

Step-by-step explanation:

squared not cubed

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Answers

A = 29.745

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