Mathematics High School

Solve the following system by substitution.
22.
X + 2y = 0
-3-4=-2
4y = -2
A (2, -1)
B. (2, 1).
C. (4, -1)
D. (-2, -1)

Answers

Answer 1

Answer:

D

Step-by-step explanation:

surely and i think it's correct

Answer 2

Answer:

D is the correct answer

Step-by-step explanation:

Related Questions

Which of the
following is not a
function?
PLEASE HELP
15 POINTS OR BRAINLIST

Answers

Answer:

Answer Choice D

Step-by-step explanation:

Does not pass the vertical line test but the rest of the answer choices do which makes D not a function and your solution.

Can you please make my answer the brainliest I would very much appreciate it. Thanks!

The length of a rectangle is four times its width.
If the area of the rectangle is 144 ft, find its perimeter.

Answers

Answer:

y = mx + c

since m = 0

c = 9

Answer: 60

suppose: the width of a rectangle is x (x > 0)

⇒ The length of a rectangle is 4x

because  the area of the rectangle is 144 ft

=> 4x.x = 144

⇔ x² = 144/4 = 36

⇒ x = 6

with x = 6 ⇒ The length of a rectangle is 4.6 = 24

the perimeter of the rectangle is (6 + 24).2 = 60

Step-by-step explanation:

Alunch bill cost $72. If you leave your server a 20% tip how much will you be leaving as the tip?

Answers

Answer: $14.4

Step-by-step explanation:

To calculate the tip, you need to multiply the bill times .2. So 72x .2 = 14.4

What is L equal?
8+3l=l

Answers

Answer:

l=-4

Step-by-step explanation:

3l=l-8 3l-l=-8 2l=-8 l=-4

What is the value of the function at x = 3? Enter your answer in the box.

Answers

Answer:

4

Step-by-step explanation:

When x is 3, y is 4

To do this, go to the right 3 units and go up until the line intersects with a grid point

At three, y is 4

Answer:

4

Step-by-step explanation:

i took the test

What is 0 divided by 0

Answers

..............0................

Answer:

0

Step-by-step explanation:

You can’t divided 0 by 0 so it’s 0

Simplify these expressions:
1. 2x + 8x
2. (5y) - 10y
3. W + 14w - 6w
4. 4x - 5x -6

Answers

Answer:

Theyre out of order.

Step-by-step explanation:

Taking the square root is the blank of squaring the number

Answers

Answer:

Step-by-step explanation:

opposite

Translate each phrase or sentence into an algebraic expression, equation or
inequality.
8) Five more than four times a number is greater than sever
9) Five less than the square root of a number r
10) 10 + 3b
1

Answers

Answer:

8. 4x + 5 > 7

9. ✓x - 5

not sure about 10, is it missing information?

Solve for x. I really need help!

Answers

Answer:

9

Step-by-step explanation:

Please give me brainliest.

he difference of two numbers is 841. The smaller of the numbers is 471. What is the other number?

Answers

Answer:

The answer is 1,312

Step-by-step explanation:

Trust me its correct

pls mark me as brainliest

steve saw 313 birds during a bird-watching trip to Yellowstone National park.he observes 15 more trumpeter swans then sand hill cranes.he saw twice as many mountain chickadees as ducky grouses.how many birds of each type did steve observe if he saw half as many trumpeter swans as ducky grouses

I need this ASAP

Answers

Answer:

82 ducky grouses, 41 trumpeter swans, 26 sand hill cranes, 164 chikadees

Step-by-step explanation:

John read the first 114 pages of a novel, which was 3 pages less than 1/3 of the novel. Write an equation to determine the total number of pages (p) in the novel. Find the total number of pages in the novel.

Answers

Answer:

The novel has 117 pages

Step-by-step explanation:

Let  p  be the pages in the novel

p − 3 = 114

p = 117

Answer:

351

Step-by-step explanation:

114 = p/3 - 3

p/3 = 117

p = 351 page

Please mark me brainliest if this helped you ! (by clicking the little crown on my answer) it helps a lot thnx! (^o^)

Solve x4 - 34x2 = -225

Answers

Answer:

x= -5,5 and -3,3

Solve for y: 2x-y = 3...halp meeeh pls. thhhhxxx!

Answers

Answer: Subtract 2x from both sides of the equation. Multiply each term in −y=−3−2x - y = - 3 - 2 x by −1 - 1 . Multiply (−y)⋅−1 ( - y ) ⋅ - 1 .

Step-by-step explanation:

Answer:

y= -3

Step-by-step explanation:

to find y- intercept, substitute x= 0

2 x 0 - y = 3

y= -3

How would you do this and how would you graph it on a number line

Answers

Answer:

k=-5,5

Step-by-step explanation:

first you calculate (by switching  the -6 to the other side)

|k|<-1+6

second you add the -1+6 and get |k|<5

the other part will be that the |k| will turn to - negative.

now you will have -k<5 then not you have to take the negative of -k to only have, (k<-5), k equalling to -5.

But remeber you always flip the < to > when you have the greater-to-equal sign or less-to-equal sign.

Please solve!! Thank you :)

Answers

Answer:

5x-1+3x+4+x+11x-21

24x-18=0

24x=18

x=3/4

AB=3/4

BC=3/4

AD=2.25 or 2 1/4

Step-by-step explanation:

IDK if it is right plz let me know if it is

NEED HELP ASAP
Amy incorrectly says that this product is 15/77. What is the correct​ product? What was Amy​'s likely​ error?

Answers

Answer:

likely error she made was saying 77 divided by 15

Follow my Pinterest 13jadyn13

Answers

Maybe for a Brainliest

Answer:

okay first you follow me on Pinterest

then I'll flw you back

good night

a force of 10 newtons acts in a direction 75 above horizontal moving an object 15 meters from (0,0) to (15,0). What is the work done by the force?
a. 2.59 joules
b. 3.88 joules
c. 38.82 joules
d. 150.00 joules

Answers

Answer:

150 Joules

Step-by-step explanation:

Step one:

Given data

Force F= 10N

the distance is described by the coordinate =  (0,0) to (15,0)

hence the distance = 15m in the x-direction.

Step two:

Required is the work done

we know that work done is expressed as

Wd= Force* Distance

Wd= 10*15

Wd= 150 Joules

Answer:

38.82

Step-by-step explanation:

what does 4(3+2x) equal

Answers

Answer: 12+8x

Step-by-step explanation:

1) 4(3+2x)- Distribute the 4

4x3+4x2x t get 12+8x

There are 2.54 centimeters in 1 inch. There are 100 inches in 1 meter. How many meter are in 158 inches?

Answers

Answer:

1.58 meters

Step-by-step explanation:

Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice. A. ​(f​g)(x) ​= nothing ​(Simplify your ​answer.) B. ​(f​g)(x) does not exist. Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice. A. ​(f​g)(​) nothing ​(Simplify your​ answer.) B. The value for ​(f​g)(​) does not exist. Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice. A. ​(x) ​= nothing ​(Simplify your ​answer.) B. ​(x) does not exist. Click to select and enter your answer(s) and then click Check Answer.

Answers

Answer:

b

Step-by-step explanation:

solve for p:
2(p+1)=5(3p+7)

Please help!! I got to the last part of the equation and now I'm lost.

Answers

Isolate the variable by dividing each side by factors that don't contain the variable.

Exact Form:

p = −33/13

Decimal Form:

p = −2.¯538461 (terminating)

Mixed Number Form:

p = −2/7/13

(7TH GRADE LEVEL) Read the instructions and answer questions 16-18

Answers

Answer:

Equations

Step-by-step explanation:

16:

7 · (-3) = -21

-3 · 7 = -21

-21 ÷ 7 = -3

-21 ÷ (-3) = 7

17:

-4 · (-5) = 20

-5 · (-4) = 20

20 ÷ (-4) = -5

20 ÷ (-5) = -4

18:

1.5 · (-3) = -4.5

-3 · 1.5 = -4.5

-4.5 ÷ 1.5 = -3

-4.5 ÷ (-3) = 1.5

This is 7th grade?

Hope I helped :)

Answer:

16. 7 x -3= -21

    -3 x 7= -21

    -21/-3=7

    -21/7=3

17. -4 x -5= 20

    -5 x -4= 20

    20/-4=-5

    20/-5=-4

18. 1.5 x -3= -4.5

   -3 x 1.5=-4.5

   -4.5/-3=1.5

   -4.5/1.5=-3

   

Step-by-step explanation:

multiplication and division

Dave bought 4 cookies at a bake sale if each cookie cost 0.85 and he paid with a twenty dollar bill how much change should he get back

Answers

Answer:

$16.60

Step-by-step explanation:

4 x 0.85 = $3.40

20 - 3.40 = 16.6

Dave should get back $16.60 in change.

Answer:

$16.6 dollars back

Step-by-step explanation:

The answer is $16.6 because 0.85 times 4 is 3.4 and 20 minus 3.4 is 16.6

Please help me with this problem

Answers

Answer: 66 degrees

Let's solve your equation step-by-step.

7x+3+x+55=14x−5+x

Step 1: Simplify both sides of the equation.

7x+3+x+55=14x−5+x

7x+3+x+55=14x+−5+x

(7x+x)+(3+55)=(14x+x)+(−5)(Combine Like Terms)

8x+58=15x+−5

8x+58=15x−5

Step 2: Subtract 15x from both sides.

8x+58−15x=15x−5−15x

−7x+58=−5

Step 3: Subtract 58 from both sides.

−7x+58−58=−5−58

−7x=−63

Step 4: Divide both sides by -7.

−7x

−7

=

−63

−7

x=9

7(9) + 3

63 +3

<U = 66



The ratio of dogs to cats at a pet store is 3:4 Which of these shows the
possible numbers of dogs and cats in the pet store?

Answers

Answer:

Step-by-step explanation:

6/8

12/16

24/32

Those are some samples. You have to give us choices.

1-2 Write an equation for each situation.
1. A bookstore ordered boxes of pencils for resale. The cost of the pencils was
$2.25 per box, and the shipping cost of the order was $2.80.

Answers

Answer:

y = 2.25x + 2.80

Explanation:

$2.25 dollars per box.

$2.80 Shipping is always added.

Given:
Prove:
Answer ASAP, please!:)

Answers

Answer:

Whats the question. I think I can help if there is a picture or if there are more words

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