Mathematics High School

When solving using Elimination:
What can you do to make a variable eliminate?
5x- 2y = 11
8x- 8y = -16

Answers

Answer 1

Answer:

Multiply 1st equation by -4

Step-by-step explanation:

Multiply the 1stequation by-4

-20x+8y=-44. Leave 2nd equation

8x-8y=-16

See how the 8y cancels with -8y

Related Questions

Can someone help me pleaseee

Answers

It might be B) Domain 0-15 and Range 0-10

For the function f(x) = x - 5

What is f(6) equal to?

A. 1

B. -1

C. 11

D. -11

Answers

Answer:

A. 1

Step-by-step explanation:

Step 1:

f ( x ) = x - 5            Function

Step 2:

f ( 6 ) = 6 - 5           Input x value

Answer:

f ( 6 ) = 1            Subtract

Hope This Helps :)

NEED ANSWER HELP FAST PLEASE

Answers

Answer:

A

Step-by-step explanation:

the answer is A because side CA is 28 miles long and you add that with side CB to get 49 that is 14 miles longer than if he just went the path AB way, so that is your answer.

The answer is to this question is A

The X-coordinate is zero and the y-coordinate is negative what is the location please help!!

Answers

0 hope this helps u ok

Help I did the rest just need help with the bottom.

Answers

Answer:

30

Step-by-step explanation:

used the slope formula y2 - y1 / x2 - x1

120 - 90 / 4 -3

30 / 1 = 30

give brainliest pls

Answer:

30

Hopefully this helped you!!!!!!!!! :)

PLZZZZ answer LAST ONE ON TEST

Answers

Answer:

d

Step-by-step explanation:

Choose the expression that is equivalent to both −xy and x−y.
xy
−(−xy)
−1(xy)
−x−y

Answers

Answer: -1(xy) exact value = -xy  

rewrite -1(xy) as -(xy)

Step-by-step explanation:

Answer:

-1(xy)

Step-by-step explanation:

I need help!!!!!!!!!!!!!!!!!

Answers

Answer:

61

Step-by-step explanation:

x is opposite 61 and opposite angles are always the same

Thank you for posting this needed it

Write a linear equation that is parallel to y=-x-4 and passes through the point (8,-9).

It is NOT multiple choice. Also this is high school geometry. ​

Answers

Answer:y=x-17

Let me know if you need to show ur work

pls answer I gibe brainliest

Answers

Answer:

first box: 518.4

second box:0

Step-by-step explanation:

 19.2

*  27

-------

518.4

+     0

---------

518.4

Hope This Helps!!

God Bless!!

~DuffyDuck~

David runs on a track that is 1/4 mile long he completes it in 1/20 of an hour
what is David's running speed?

a. 5ml/h

b. 1/80ml/h​

Answers

Answer:

5mile per hour

Step-by-step explanation:

Step one:

given data

distance= 1/4mile

time taken= 1/20 hour

Step two:

Required

speed

we know that speed is

speed= distance/time

substituting

speed= 1/4/1/20

speed=1/4*20/1

speeed=20/4

speed=5mile/hour

The option a sis correct, the speed is 5mile per hour

One step equation thx!

Answers

Answer:

b=8

Step-by-step explanation:

15+b=23

Subtract 15 both side

15-15+b=23-15

b=8

Marcus sorts his 85 baseballs cards into stacks of 9 each. How many stacks of 9 cards can marcus make

Answers

Answer:

He can only make 9

Step-by-step explanation:

He will have 4 cards left over so it will not be enough to make another stack.

Answer:

9.44444444444 rounded to 9.5

Step-by-step explanation:

maths

Graph the following equation.
y + 2 = -2/3(x-4)

Answers

just go on desmos.com

Pls help I don’t get this

Answers

Answer:

Answer is A

Step-by-step explanation:

They start at -10 and if you add 10 you get 0. You increase

Determine the value for: –12 + (–9)

Answers

Answer:

-21

you "forget" the negative symbol and add like normal, then put the negative symbol in front of your answer

There are about 2.2 pounds in one kilogram. If Miguel's bag weighs

37.4 kilograms, about how many pounds does it weigh? Did you multiply

or divide to find your answer? my last points help ASAP

Answers

Answer:

82.28

Step-by-step explanation:

1kg=2.2 pounds

[tex]37.4 \times 2.2 = 82.28[/tex]

Napa and Newton are 24 miles apart. On a map, the two cities are 3 inches apart. What is the map scale?

Answers

Answer:

one inch on the map is 8 miles

Step-by-step explanation:

divide 24 by 3

The equation of the line in slope-intercept form

Answers

Answer:

slope is 4 over 7

Step-by-step explanation:

.......

Which other expression has the same value as (-14) - (-8) ?
Group of answer choices

(-14) + 8

14 - (-8)

14 + (-8)

(-14) + (-8)

Answers

Answer:

The first answer choice, (-14) + 8

Step-by-step explanation:

1. Solve (-14) - (-8)

(-14) - (-8) = -6

2. Solve the answer choices

(-14) + 8= -6

14 - (-8)= 22

14 + (-8)= 6

(-14) + (-8)= -22

81/15 + -14/5 plz it is for a test

Answers

Answer:

13/5 and/or 2.6

Step-by-step explanation:

Answer:

2.6

Step-by-step explanation:

81/15 -> 5.4

-14/5 -> -2.8

when you add a negative it is the same as subtracting the positive value (positive 2.8) and you get 2.6 :)

9. Jane's family divided up their garden so that 2/3 of the garden will have vegetables. Jane and her sister will plant 2/3 of the vegetable portion of the garden. How much of the family garden will Jane and her sister plant?

Answers

Answer:

1/3

Step-by-step explanation:

Jane and her sister planted vegetables in 4/9 portion of the family garden.

What is a fraction?

A fraction is written in the form of p/q, where q ≠ 0.

Fractions are of two types they are proper fractions in which the numerator is smaller than the denominator and improper fractions where the numerator is greater than the denominator.

Given, Jane's family divided up their garden so that 2/3 of the garden will have vegetables.

Now, In that 2/3 portion, they planted 2/3 of that portion.

Therefore, The portion of the family garden will Jane and her sister plant is,

= (2/3)×(2/3).

= 4/9.

So, Jane and her sister planted 4/9 portion.

learn more about fractions here :

https://brainly.com/question/10354322

#SPJ2

round each weight to the nearest whole gram. them estimate the total weigh of the coins in allens hand peny is 2.500 nickel is 5.000 and the dime is 2.268 quarter is 5.670 half dollor is 11.340 whats the answer please help me

Answers

Answer:

Penny: 3 grams, Nickle: 5 grams, Dime: 2 grams, Quarter: 6 grams, and half a dollar is 11 grams = 27 grams in total

Step-by-step explanation:

your welcome

Does the following mapping diagram represent a function?

A. Yes
B. No.
C. Not enough information

Answers

Answer:

yes

Step-by-step explanation:

the yearbook club had a meeting. the meeting had 16 people, which is one-fourth of the club. how many people are in the club

Answers

Answer:

4

Step-by-step explanation:

one fourth of 16 is 4

because 4 x 4 equals 16

so 2/4 of 16 would be 8

and 3/4 of 16 would be 12

A cake pan is a rectangular prism with height 4 inches and base 12 inches
by 15 inches. Wallace wants to wants to know how much batter it will take
to completely fill the pan? *

Answers

It was be 720 u multiply length which is 12 and the width which is 15 which equals 180 than you multiply 180 by the height which is 4 180x4=720

(iv) The area of a rectangle with breadth
5 cm is 30 sq. cm. Find its length and
perimeter.​

Answers

Answer:

Step-by-step explanation:

if the breadth is 5cm, then you divide 30/5 to get your length since it's length times breadth to get the area, so 6cm for the length

and then it's 2b plus 2l to get your perimeter so

2(5)+2(6)=p

10 plus 12 equals p

22 is your perimeter, 6 is your length

You are solving for the discriminant of a quadratic function and find your answer to be 9 what does 9 tell you about your quadratic equation?

Answers

Answer:

Step-by-step explanation:

that you will have 2 real roots

I Had 15 mystery books in my collection. At the bookstore, I bought 8 books and sold 10. How many books do I have now?

Answers

Answer:

13 books

Step-by-step explanation:

15 + 8 = 23

23-10=13

PLEASE ANSWER I HAVE ONLY A FEW HOURS LEFT!!!!!!!!!!

Answers

Answer:

(x-1, y+5)

Step-by-step explanation:

Combine the translations together.

x-3+2 = x-1

y+8-3 = y+5

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