Mathematics High School

X+y=8
2x+y=2
Any one out there please help me out

Answers

Answer 1

Answer:

(- 6, 14 )

Step-by-step explanation:

Given the 2 equations

x + y = 8 → (1)

2x + y = 2 → (2)

Multiplying (1) by - 1 and adding to (2) will eliminate the y- term

- x - y = - 8 → (3)

Add (2) and (3) term by term to eliminate y, that is

x = - 6

Substitute x = - 6 into either of the 2 equations and evaluate for y

Substituting into (1)

- 6 + y = 8 ( add 6 to both sides )

y = 14

solution is (- 6, 14 )

Related Questions

A function is defined by the points {(0,2), (2,3), (5,9), (7,2)}. Which ordered pair can we add to the set to keep it a function?

Answers

Answer:

Choose 0 to substitute in for x to find the ordered pair. Remove parentheses. Simplify 3(0)−10 3 ( 0 ) - 10 .

Step-by-step explanation:

Monica is feet tall. Carly is feet tall. How much taller is Carly than Monica?

Answers

Answer:

34

Step-by-step explanation:

Answer: 27

Step-by-step explanation: ?

what are the next three terms in the sequence3,6,9,12,...?

Answers

Answer:

15, 18, 21

Step-by-step explanation:

3, 6, 9, 12, 15, 18, 21...

3 x 5 = 15

3 x 6 = 18

3 x 7 = 21

Hope this helps! :)

Jim was thinking of a number. Jim halves it and gets an answer of 3.4. What was the original number?

Answers

Answer:

6.8

Step-by-step explanation:

To tackle these types of questions, you essentially have to 'undo' or ' reverse' the calculation/s that is being done in the question.

In the question, the calculation that is being done is 'halfing' or 'dividing by 2'.

So to find the original number you have to do the opposite - double or 'multiply by 2'

Therefore

3.4 x 2 = 6.8

hope this helps :)

i need to reduce the radical 252

Answers

6x the square root of 7

Answer:

√252 = 6√7

Step-by-step explanation:

Double Prime Factor Method

The Double Prime Factor Method uses the prime factors of 252 to simplify the square root of 252 to its simplest form possible. This is how to calculate A and B using this method:

A = Multiply all the double prime factors (pairs) of 252 and then take the square root of that product. The prime factors that multiply together to make 252 are 2 x 2 x 3 x 3 x 7. When we strip out the pairs only, we get 2 x 2 x 3 x 3 = 36 and the square root of 36 is 6. Therefore, A equals 6.

B = Divide 252 by the number (A) squared. 6 squared is 36 and 252 divided by 36 is 7. Therefore, B equals 7.

Once again we have A and B and can get our answer to 252 in its simplest radical form as follows:

√252 = A√B

√252 = 6√7

1. In diagram below, POTU is a circle and |SR|=|ST|. Find.r.
​

Answers

The angle of r is 90 degrees. The rectangle touches the circle on each corner and therefore all angles have to be 90, and since one of them is equal to r

Answer:

i think 100 is a required answer.

*WILL GIVE BRAINIST*
*geometry*

Answers

The answer is °149 is the answer

Which ordered pair describes a point with a location in the first quadrant of a coordinate plane?
(4, -6)
(-8, -4)
O
(3, 2)
(-6, 10)

Answers

Answer:

(3, 2)

Step-by-step explanation:

Upper bound and lower bound of 17

Answers

Answer:

Step-by-step explanation:

Hey there this si the upper and lower bound for 17

16.5<17<17.5

two times the sum of a number and 7

Answers

Answer:

2(x+7)

Step-by-step explanation:

i hope this helps

Find the common ratio of the geometric sequence 8, 16, 32

Answers

This is a geometric sequence since there is a common ratio between each term. In this case, multiplying the previous term in the sequence by 2 gives the next term.

what is 0.075 as a fraction

Answers

Answer: 3/40

Step-by-step explanation:

Answer:

75/1000

Step-by-step explanation:

say it aloud, that helps

Calculate the middle number between 1-5 and 7.1

Answers

Answer:

The correct answer would be 11.1

Step-by-step explanation:

1 - 5 = - 4

7.1 - (- 4) = 11.1

Which of the following figures are rhombuses?

Answers

Answer: D

It obviously wouldn’t be C and D doesn’t have equal sides

Answer:

D

Step-by-step explanation:

Please help me now :c

Answers

On Monday he reads 2 pages, on Tuesday he reads 6 pages (triple of 2: 2 + 2 + 2 = 6), on Wednesday he reads 18 pages (triple of 6: 6 + 6+ 6 = 18), on Thursday he reads 54 pages (triple of 18: 18 + 18 + 18 = 54).

15 POINTS! Please solve: 3 - 2x = 13 + 3x

Answers

Answer:

x= -2

Step-by-step explanation:

hope this helped <3

3-2x = 13+ 3x
-5x = 10 divide by -5
x= -2

what is 9 squared...................

Answers

Answer:

81

Step-by-step explanation:

[character limit thing]

what is the answer to this simplified?
-3(4x+3)+5x​

Answers

Answer:

-7x-9

Step-by-step explanation:

-12x-9+5x

-7x-9

:)

Pete has 3 dollars less than what Linda has. If together has 81 dollars how much does each person have?

Answers

Answer:

Pete: 39, Linda: 42

Step-by-step explanation:

Suppose Pete has x dollars. If he has 3 dollars less than Linda, then Linda has 3+x dollars. Together, they have 81 dollars:

x+3+x=81

2x+3=81

2x=78

x=39

Since Pete has x dollars, and x=39, he has $39.

Linda has 3+x, which is 39+3 = $42

I hope this helps! :)

how many solutions does 1=3 have

Answers

none because one will never equal three

what is the length of the tail

Answers

Answer: 35.2 Inches

Step-by-step explanation: In the question it states that the tail is 64% of the length of the monkey so what you do is multiply 55 by 65% and there's your answer.

Answer:

35.2

Step-by-step explanation:

the tail is 64% so to get 64% of 55 just multilpy 55 by .64 or the percentage in decimal form (.64)

Right answer gets brainlist

Answers

Answer:

1244

Step-by-step explanation:

real answer is 1244.07

Answer: 1244.07 cubic meters

Step-by-step explanation:

Diameter x height

The perimeter of a triangle is 22cm. If one of the sides is 9cm, find the other sides if the area of the triangle is 20.976cm2​

Answers

Answer:

6 cm and 7 cm

Step-by-step explanation:

Given

A triangle with:

P = 22 cmA = 20.976 cm²a = 9 cmTo find Other sides of the triangleSolution

Let the missing sides be b and c

The perimeter is

P = a + b + c

Substitute known values

22 = 9 + b + cb + c = 13c = 13 - b

Use Heron's formula for the area:

A = √s(s-a)(s-b)s-c), where s is half-perimeters = 22/2 = 11

Substitute s, a and c and solve for b:

√11(11 - 9)(11 - b)(11 - c) = 20.976√11*2(11 - b) (11 - 13 + b) = 20.976√22(11 - b)(b - 2) = 20.976

Square both sides

22(11 - b)(b - 2) = 20.976²22(11 - b)(b - 2) ≈ 440(11 - b)(b - 2) = 20 13b - b² - 22 = 20b² - 13b + 42 = 0b = (13 ± √13² - 4(42))/2b = (13± 1)/2b = 6, b = 7

Find c:

c = 13 - bc = 6, c = 7

So missing sides are 6 cm and 7 cm

The game of checkers is played on a square board. If the length of one side of the board is 4^2 inches, what is the area of the board in square inches? Express your answer using exponents.

Answers

Answer:

4^4

Step-by-step explanation:

h(x) = 3x2 + 13x + 4

Answers

(3x-1) (x-4) I think that is your answer

If you flip a coin, what is the probability that it will land on heads?

Answers

Answer:

0.5

Step-by-step explanation:

Answer:

DUDE ITS A 50- 50 CHANCE SO DUM

Step-by-step explanation:

Mike bought a box of 12 golf balls for $18. Solve the equation 12x=$18 to find the price of each golf ball. $1 25, $1 50, $1 75 are the options. Choose one and please show work.

Answers

Answer:

The price of each golf is $ 1.50

Step-by-step explanation:

Given;

Price of 12 golf balls = $18

Let the price of 1 golf ball = x

Price of 12 golf balls = 12x

But the total price of the 12 golf balls = $18

Thus, 12x = $18

x = $18 / 12

x = $ 1.50

Therefore, the price of each golf is $ 1.50

There are 45 Students per bus. Find the number of students on 5 buses

Answers

Answer:

225 students

Step-by-step explanation:

45 x 5 = 225

you should do 45(5) = 225

WHATS TWO PLUS TWO PLEASE I NEED TO KNOW HELLLLLLPP

Answers

Answer:

ummmm ...two plus two is equal to 4

help pls fast
15. In a parallelogram ABCD, AB = 7.2 cm and the perpendicular from C on AB is 4.5 cm find its area.​

Answers

Answer:

32.40cm²

Step-by-step explanation:

Given the parallelogram ABCD ;

side AB is always Parallel to CD, hence ;

AB = CD = 7.2cm

Perpendicular from C on AB is the height of the parallelogram = 4.5cm

Area of a parallelogram : base * height

Area of a parallelogram = length base * height

Area of a parallelogram = 7.2 cm * 4.5cm

Area of parallelogram = 32.40cm²

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