Mathematics High School

use elimination to solve each system of equations

Use Elimination To Solve Each System Of Equations

Answers

Answer 1
1: x=2 y=5
2: x=-2 y=-6
3: x=3 y=-1

Related Questions

ABOVE & BEYOND: What is the slope of the line graphed below?​

Answers

Answer:

3

Step-by-step explanation:

Which integer represents this situation?

A skydiver jumped out of a plane at an elevation of 1,600 feet.

0
1,600
-1,600

Answers

Answer: 1600 feet the second answer

hope this helped! :)

Answer:1600

Step-by-step explanation:

3. In a survey on juice preference, 68 students prefer orange
juice and 32 prefer apple juice.
Jui
Use difference to compare.

Answers

Answer:

36

Step-by-step explanation:

68-32= 36

Answer:

i have 36

Step-by-step explanation:

all i did was subtract 32 from 68

What is 76 to the 3rd power

Answers

Answer:

438976

Step-by-step explanation:

76^3

438976 !!
hope this helped

the question is "get y by itself" and the equation is 5x + 5y =15

Answers

Answer:

y=3-x

Step-by-step explanation:

Answer:

First we get y on one side by itself.

5x+5y=15

We move x over to the other side.

5x-5x+5y=15-5x

Simplify.

5y=15-5x

Now we remove the coefficient from y.

5y/5=(15-5x)/5

Simplify.

y=15/5-5x/5

y=3-x

The answer is y=3-x

Help me because I need help because help me

Answers

Answer:

6250

Step-by-step explanation:

I NEED HELP PLZ MY SMART PPL

Answers

Answer:

its 60

Step-by-step explanation:

if its right caan i get a brainliest

Answer:

60

Step-by-step explanation:

To get the area of a right triangle (a triangle with an angle of 90 [represented by the box in the corner]) you have the formula of

Area = (a*b) divided by 2

a = one side of the triangle

b = another side of the triangle

Neither side are the hypotenuse.

Solve for x.
2x - x = 19
X =

Answers

Answer:

Step-by-step explanation:

All you gotta do is add similar elements

2x - x = 19

x=19

It says solve for the variable can you explain

Answers

Answer:

x = 9

Step-by-step explanation:

Since we know that the triangle is a right triangle we also know that the angle would be 90 degrees

However we are only given 56 and 3x+7

Let 3x+7 be u

We know that 56+u=90 so solve for u

u=90-56

u = 34

Now u = 3x + 7 so,

3x + 7 = 34

solve for x,

3x=34-7

3x=27

x=27/3

x=9.

joan worked 6 hours on monday, 4 hours on wendsday and hours and 8 hours on friday. her gross pay for all 3 days was $130.50. what was her hourly rate

Answers

Answer:

Step-by-step explanation:

Help pleaseeeeeeeeeeeeeeeeeeee

Answers

Answer:

3.55 x t = 28.40 or 28.40/t = 3.55

Step-by-step explanation:

Explain how to use the distributive property. You can use the problem: 4(x+3).

Answers

Answer:

4(x + 3)

4 * x = 4x

4 *3 = 12

Final answer:

4x+12

Step-by-step explanation:

hope this helped have great day/night/afternoon! :D

Write down in terms of n an expression for the nth term of the following sequence
12 16 20 24 28

Answers

Answer:

4n + 8

Step-by-step explanation:

John sold 175 tickets for the school play. Student tickets cost $6 and adult tickets cost
$11. John's sales totaled $1510.
Continued... Solve the system in the previous problem to determine how many student
tickets and how many adult tickets John sold.
How many student and adult tickets were sold?

Answers

Answer:

50 kid

110 adults

Step-by-step explanation:

6*50=300

11*110=1210

300+1210=1510

What does r stand for in the formula 2.rr.?

Answers

Answer:

r = radius of circle

Step-by-step explanation:

The circumference of a circle is given by :

C = 2πr

Where

r is the radius of the circle

In this problem, we need to say that what does r represents in the given formula. It means we can say that r stands for the radius of the circle.

Y=4-2x 3y-2x=4 solve using substitution

Answers

Answer:

x=1 y=2

Step-by-step explanation:

y=4-2x             3y=4+2x

3*(4-2x)=4+2x

12-6x=4+2x

12-4=2x+6x

8x=8

x=1

y=4-2*1

y=2

First turn the equation y=4-2x into a y=Mx+b formula. It would be y=-2x+4. Then plug it in into the y on the second equation. I’d be 3(-2x+4)-2x=4. Then solve. The answer is x=1. Hope it helped. :)

what is the nth term rule of the linear sequence below 22,18,14,10,6

Answers

Answer: -10

Step-by-step explanation:

We can see there is a pattern of -4 each time

1:22

2:18

3:14

4:10

5:6

6:2

7:-2

8:-6

9:-10

Answer:

1. 22 - 4 = 18

2. 18 - 4 = 14

3. 14 - 4 = 10

4. 10 - 4 = 6

5. 6 - 4 = 2

6. 2 - 4 = -2

7. -2 - 4 = -6

8. -6 - 4 = -10

9. -10 - 4 = -14

10. -14 - 4 = -18

Step-by-step explanation:

The question did not state which term specifically you wanted, so here is 1-10, if its higher than that, then i can update my answer.

Have a good day.

The graph below shows the relationship between the pumpkin weight and growth time

Answers

Where is the graph and what is the question?

Ryan bought a brand new car for $18,000. Its value depreciated at a rate of 1.2%.

Write a function to represent the value of the car as a function of time.

A. v(t)=18000(0.012)^t

B.V(t)=18000(1.2)^t

C.v(t)=18000(98.8)^t

D(t)=18000(0.988)^t

Answers

Answer:

A(t)= 18000(0.988)^t

Step-by-step explanation:

Given data

Ryan bought a brand new car for $18,000

Its value depreciated at a rate of 1.2%

Let us use the compound expression

A= P(1-r)^t

substitute

A= 18000(1-0.012)^t

A(t)= 18000(0.988)^t

Hence the expression is A(t)= 18000(0.988)^t

A function to represent the value of the car as a function of time is v(t) = 18000(0.988)^t

Exponential function

The standard exponential equation is in the form y = ab^x

b is the rate which can be growth or decline

If the value of b < 1, it is a depreciationIf the value of b > 1, it is an appreciation

If Ryan bought a brand new car for $18,000 and its value depreciated at a rate of 1.2%, the exponential equation represented by this statement is;t

v(t) = 18000(1-0.0012)^t

v(t) = 18000(0.988)^t

Hence a function to represent the value of the car as a function of time is v(t) = 18000(0.988)^t

Learn more on exponential function here: https://brainly.com/question/12940982

what graph below matches this equation y=2x+1 ​

Answers

There is no graph attached

find the reciprocal of the number 3/5​

Answers

Answer:

[tex]\frac{5}{3}[/tex]

Step-by-step explanation:

The reciprocal of a fraction [tex]\frac{a}{b}[/tex] is [tex]\frac{b}{a}[/tex]

Then

The reciprocal of [tex]\frac{3}{5}[/tex] is [tex]\frac{5}{3}[/tex]

please help me

Line m is graphed on the coordinate grid shown. (0,-4) (-4,8) What is the slope of a line perpendicular to Line m?​

Answers

8-(-4)
-4-0
12/-4=-3
1/3 is the slope perpendicular to line m

Answer:

-3

i hope this helped

A quantity with an initial value of 6900 grows exponentially at a rate
of 40% every 8 hours. What is the value of the quantity after 2.75
days, to the nearest hundredth?

Answers

Answer:

Step-by-step explanation:

2.75 days * (24 hours)/day = 66 hours

6900(1.40)^(66/8) = 119,765.72

Answer:

110765.72

Step-by-step explanation:

A water gauge in a pond measured 2358 in. At the beginning of the week. After five days of rain, the gauge read 3414 in. By how much did the water level rise?

Answers

Answer:

1056 inches

Step-by-step explanation:

Given that :

Initial measurement = 2358 in

Guage level after 5 days of rain (final reading) = 3414 in

Change in water level rise :

Final reading - Initial reading

(3414 - 2358) in

= 1056 inches

The ratio of Ali's to Beth's score is 5:3. Ali
scored 10 more marks than Beth. Clare scored
7 more than Ali. Find the score of all three.

Answers

Answer:

Ali 25

Beth 15

Clare 32

Step-by-step explanation:

Here, we want to get the score of the three

let Ali’s score be x

He scored 10

more than Beth; Beth score will be x-10

Let us now work with the ratio

x/x-10 = 5/3

3x = 5(x-10)

3x = 5x - 50

5x-3x = 50

2x = 50

x =

50/2

x = 25

Beth will

score 25-10 = 15

score had 7 more than Ali,

25 + 7 = 32

John ordered three lobsters.the fist o e weighed 3.2 pounds,the second weighted 1.75 pounds,the third 1.9 pounds what is the total weight of the three lobsters

Answers

Answer:

6.85 pounds

Step-by-step explanation:

3.2+1.75+1.9=6.85

please help me with this question I'll follow u​

Answers

Answer:

7/5

Step-by-step explanation:

it is 2/7 more than what it was (5/5)

Find two numbers such that their sum is 10 and their
product is 22.

Answers

Hope this help answers are on the bottom :)

You are given $400 as a graduation gift. You decide to place the money in a savings account with an annual interest rate of 7.5% for 9 months. Find the amount of interest you will earn

Answers

Answer: $22.50

Step-by-step explanation:

The interest will be gotten by using the formula:

= PRT

= Principal × Rate × Time

= 400 × 7.5% × 9/12

= 400 × 0.075 × 0.75

= $22.50

The interest is $22.50

Which of the following is a monomial?
A. 20x11 - 3x
B. 11X-9
C. 20x11

Answer: A

Answers

Answer: the answer is c : 20x^11

Step-by-step explanation:

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