Mathematics High School

answer asap only if you know

solve by elimination

3x + 2y = 21 x - 4y = -7

show work plz and thx

Answers

Answer 1
3x+2y=21

•add -2y to both sides
3x+2y=21
-2y -2y
3x= -2y+2y
•then divide both sides by 3
3x/3 = -2y+21/3
•your answer:
x=-2/3y+7


x-4y=-7

•add 4y to both sides
x-4y=-7
+4y +4y
•your answer:
x=4y-7

Related Questions

dawn had 1/5 gallon of juice to divide evenly between 2 friends.How much juice should each friend receive?

Answers

Answer:

7.5 if 1/5 is 15. if not, its 0.6

Step-by-step explanation:

Answer:

1/3

Step-by-step explanation:

you have to break the fraction into 1/3 so the 2 friends can evenly get that

if its wrong look at someone else

Which expression has the same value as 8 – (-1)?​

Answers

Answer: 9

Step-by-step explanation:

Two negatives make a positive. So the expression 8-(-1) is equal to 9, because the two subtraction signs the equation create an addition sign, and the equation becomes 8 + 1.

Therefore, 9 has the same value as 8-(-1).

what is 8=3a-4? please answer if you know it because the homework is for tomorrow.

Answers

Answer: a = 4

Step-by-step explanation: Hope this helps ^^

Answer:

a=4

Step-by-step explanation:

8=3a-4

+4     +4

12=3a

12/3

a=4

The following table shows the number of students in a school who like cooking and/or reading:
Like Cooking
Total
Do Not Like
Cooking
Like Reading
12
36
48
8
10
Do Not Like
Reading
18
Total
20
46
66
How many more people like reading than cooking?
28
36
40
46

Answers

Answer:

I did it and is 36

Step-by-step explanation:

Answer:

The first one: 28

Step-by-step explanation:

The total number of people who like cooking is 20 people while 48 people like to read.

48-20 is 28

can you help me please ​

Answers

Answer:

151.4496 cm^2 is the area

According to the food web, which organisms compete with the Zebra Mussel for food

Answers

Answer:

Mollusks

Step-by-step explanation:

This ain't math but you lucky I took marine biology.

WILL GIVE BRAINLIEST!
Translate into a variable expression.
8 divided by the difference between x and 6

Answers

Answer:

[tex]\frac{8}{x-6}[/tex]

Step-by-step explanation:

8 ÷ x-6

PLS HELP I WILL GIVE BRAINLIEST

Answers

Answer:

21 square feet

Step-by-step explanation:

To find out the area of this irregular figure, divide it into two rectangles and add their areas.. This can be done in two ways.

Version 1: 6 * 2 rectangle and 3 * 3 square

(6 * 2) + (3 * 3)

12 + 9

21 sq. ft.

Version 2: 5 * 3 rectangle + 2 * 3 rectangle

(5 * 3) + (2 * 3)

You could really just do 7 * 3 here.

7 * 3

21 sq. ft.

Either way, you still get 21 square feet as your answer.

Someone pls help with this!

Answers

Answer: The last one. It has a proportional relationship of -4.

Step-by-step explanation:

Edward deposited ​$8500 into a savings account 4 years ago. The simple interest rate is 5​%. How much money did he earn in​ interest?

Answers

Step-by-step explanation:

bun the end of the yeah job. intend him dnd neer

t he held orlick knife David kamp jacory danforth Jackie renfrow quill lss Michael Kaepernick post Darvish Davydenko Comstock decision Nintendo Kuznetsov victory

There are 7 ted marbles. 7 blue marbles, and 7 green marbles.If a person randomly selects 1 marble from the bag, what is the probability that the person selects a blue marble.​

Answers

Answer:

there are an equal amount of all three colors of marbles in the bag, so the probability of selecting a blue marble is just 1/3.

Let me know if this helps!

1/3
There is 21 marbles and if you divided by 3 it gets 7.

7/21 is equal to 1/3

Therefore the possibility of picking a blue marble is 1/3.

Max car holds 18 gallons of gasoline driving on the highway the car uses approximately 2 gallons per hour. let H represent the number of hours max has been riding on the highway. write an expression that shows how many gallons of gasoline Max has left after driving H hours. then find the number after max drives 3.5 hours on the highway.

Answers

y= 18 gallons-2(h)
y is what you're trying to find out and since there are 18 gallons in the tank after every hour you would have 2 less gallons. So, you can multiply how many hours he's been driving by the 2 gallons and subtract it from 18

Subtract.
(8t+7)–(2t+4)

Answers

6t+3 is the answer i’m pretty sure

Help plz and thank have a nice day

Answers

This is for the first page

Answer: answer to question 17 is r=32/7, answer to question 18 is m=-12, answer to question 19 is k=-9, answer to question 20 is p= No solution, answer to question 21 is x= infinite solutions, answer to question 22 is x= -4.

Step-by-step explanation:

This picture is for the second page


Find the cincumference?

Answers

Circumference= π*diameter
So C=3.14*3.7
23.25 is the answer to the question if I’m correct

how can I solve this equation, 6x + 3y = -12, as y=mx+b?

Answers

Answer:

y=-2x-4

Step-by-step explanation:

6x + 3y=-12 subtract 6x to other side

3y=-12-6x divide 3 to every number

1y=-4-2x

78 x 92 rounding to 1 significant figure

Answers

Answer:

7176

Step-by-step explanation:

78×92= 156 + 7020= 7176

whats the answer to 3x+4=6x+19

Answers

Answer:

x = -5

Step-by-step explanation:

[tex]3x + 4 = 6x + 19\\-3x + 4 = 19\\-3x = 15\\x = -5[/tex]

3x+4=6x+19 subtract 3x from both sides
4=3x+19 subtract 19 from both sides
-15=3x divide by 3 on both sides
-5=x
The answer is x=-5

Find the common ratio r for the geometric sequence and use r to find the next three terms. Enter your answer to four decimal places if necessary. 100, -40, 16, -6.4, The Common Ratio The next three terms are

Answers

Answer: The next three terms =2.56, - 1.024 and 0.4096

Step-by-step explanation:

Common Ratio of a Geometric sequence, R is calculated as

=a2/a1 = -40/100=-0.4

or a3/a2=16/ -40 = -0.4

such that the next three terms are

5th term =  -6.4 x -0.4=2.56

6th term= 2.56 x -0.4 =-1.024

7TH term= -1.024 x -0.4=0.4096

how do i answer this question

Answers

Answer:

a = 2, -7

Step-by-step explanation:

hey does anyone know what 4/5 times 7/8 is ?- its for my math hw and its due in a hour thx!

Answers

Answer:

0.7

Step-by-step explanation: (4/5)*7)/8

Hope this helps:)

The Park family was traveling to Disney World on vacation. They drove 487.5 miles in 7.5 hours. At this rate, how many miles did the Park family drive per
hour?

Answers

They drove 65 miles per hour

What is the answer !?
Help please

Answers

C; 19,000. the equation would be pi (24/2)^2*42

5 3/13 rounded to the nearest whole number

Answers

Answer:

the answer is 53

Step-by-step explanation:

i need help with this

Answers

Answer:

y = 6/5x -5

Step-by-step explanation:

Points are (5,1) (0,-5)

-5 - 1/ 0-5 = 6/5 slope

y-y1= m(x-x1)

y- 1 = 6/5(x-5)

y -1 = 6/5X - 6

y = 6/5X -5

As
MZLON = 113
mZMON = 2x +33°
M

mZLOM = 3x+ 20°
Find mZMON:
Pro

Answers

Answer:

Step-by-step explanation:

113= (2x+33)+(3x+20)

113=5x+53

60=5x

X=12

NOT DONE YET

substitute x value into MON equation to find angle measure

you get 57 degrees

Help!!!!! Giving out 15 points and a Brainliest to the person who answers correctly

Answers

Answer:

m∠TUW = 90, m∠VUR = 130, m∠VUW = 50

Step-by-step explanation:

Supplementary angles add up to 180!

Select all that apply.
Which set of ordered pairs represent a function?

a. {(-7,0), (9,-1),(-4,3), (-4,-2)}
b. {(-1,3), (-10,-5),(-1,-6),(-1, -2)}
c. {(-9,-5), (6,-9), (6, -10), (6, 7)}
d. {(3,3), (3, -1),(3,5), (3,7)}
e. None of the above

Answers

Answer:

c. none of the above

Step-by-step explanation:

E none of the above most are repeating in each row

Which of these strategies would eliminate a variable in the system of equations?
10x + 4y = -2
5x - 2y = 2

Answers

i think the answer is c

A pair of shoes is on sale for 80% of the original price. The sale
prive is $60. What was the original price?

Answers

Answer:

12 dollars

Step-by-step explanation:

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