Mathematics College

Solve the system using elimination.
3x + 5y = -2
-x + 2y = 8
([?], [ ]

Solve The System Using Elimination.3x + 5y = -2-x + 2y = 8([?], [ ]

Answers

Answer 1

Answer:

Step-by-step explanation:

To eliminate the x terms, first multiply the second equation by 3:

-3x + 6y = 24

then add it to the first equation:

3x + 5y = -2

-3x + 6y = 24

------------------

0x + 11y = 22

y = 2

plug the value of y into one of the equations:

-x + 2(2) = 8

x = 4-8 = -4

(x,y) = (-4, 2)

Related Questions

George Smith own's George's Joint, a gas station and convenience store. George is trying to get a better understanding of his business and wants to estimate the mean number of gallons of gasoline sold to his customers. Assume the number of gallons of gasoline sold follows a normal distribution with a population standard deviation of 2.3 gallons. From his records, he randomly selects 60 sales and find the mean number of gallons sold is 8.6. What is the point estimate of the population mean

Answers

Answer:

The point estimate of the population mean is of 8.6 gallons sold.

Step-by-step explanation:

Point estimate for the population mean:

From a large sample, the point estimate for the population mean is the sample mean.

In this question:

The sample mean number of gallons sold is 8.6. This means that the point estimate of the population mean is of 8.6 gallons sold.

Solve 4ax + 5ax = 6 ax + 9 for x. Assume a = 0.

Answers

Step-by-step explanation:

4ax + 5ax = 6 ax + 9

If a=0

Then

0+0≠0+9

so x is undefined

If the value of 'a' is zero. Then the solution of the equation will be not defined.

What is the solution to the equation?

The distribution of weights to the variables involved that establishes the equilibrium in the calculation is referred to as a result.

The equation is given below.

4ax + 5ax = 6ax + 9

Simplify the equation for x, then the equation is given as,

4ax + 5ax = 6ax + 9

4ax + 5ax - 6ax = 9

3ax = 9

x = 3 / a

If the value of 'a' is zero. Then the solution of the equation will be

x = 3 / 0

x = not defined

If the value of 'a' is zero. Then the solution of the equation will be not defined.

More about the solution of the equation link is given below.

https://brainly.com/question/545403

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if 25 worker need 3 days to build a house how long will 10 worker need

Answers

Answer:

3 x 10 = 30 man-days per house

Answer:

7.5 days

Step-by-step explanation:

Given a and b are numbers, and a + b = 180, which
statements also must be true?
a = 180 - 6
a - 180 = b
360 = 2a + 2b
a = 90 and b = 90

Answers

If the first one is a = 180 - b, and not 180 - 6, then that is correct.

Also, 360 = 2a + 2b is correct

pls help have a nice day

Answers

Answer:

I THINK the first and second choice, because it said the last two digits are between the numbers 0-9, them two are the only ones that end with them.

Step-by-step explanation:

You have a nice day to!!

Find the quotient.
(6x ^2 + 23x + 20) ÷ (5 + 2x)

a) 3x - 4
b) 3x + 4
c) 3x +19

Answers

Answer:

3x+4

Step-by-step explanation:

There are 12 cupcakes. 3⁄4 of them have pink icing.
1⁄3 of the cupcakes with pink icing have sprinkles. How many of the cupcakes have pink icing and sprinkles?

Answers

Answer:

3 of them should have sprinkles.

Step-by-step explanation:

Which table represents an exponential function?
X
0
1
2
3
4
у
5
13
21
29
37
Х
0
1
2
3
4
у
0
22
44
66
88
X
0
1
2
3
4
у
2
4
8
16
32
0
1
2
3
4
у
5
6
7
8
9

Answers

The exponential function from the table is given by y = 2(2)ˣ

What is an exponential function?

An exponential function is in the form:

y = abˣ

Where a is the initial value of y and b is the multiplication factor.

At x = 0, y = 2, hence a = 2

At x = 1, y = 4, hence:

4 = 2b¹

b = 2

The exponential function is given by:

y = 2(2)ˣ

The exponential function from the table is given by y = 2(2)ˣ

Find out more on exponential function at: https://brainly.com/question/12940982

Mrs. Hilt has 6 boxes of markers. Each box has 19 markers in it. If she sold each maker for $0.75, how much money would Mrs. Hilt earn?

Answers

Answer:

85.50

Step-by-step explanation:

6 times 19 = 114 markers then times .75= 85.50


Please help and show work

Answers

Answer:

0.75x

Step-by-step explanation:

Theres not much to show. It says that you buy x bags of chips for $0.75. So how I got 0.75x is because you have to multiply 0.75 x times to get your answer,but here they just want you to write an equation with out solving it.

PLEASE HELP, will get brainliest​

Answers

Answer:

The answer is the first, hope this helps

Step-by-step explanation:

please help me with this question

Answers

Answer: c. f - 3 + 6d

Explanation: 5d - d + 4 + 2d - 5f - 6f - 7
- 5f - 6f = f
4 - 7 = -3
5d - d = 4d, 4d + 2d = 6d

PLEASE HELP ILL MARK BRAINLY FOR CORRECT ANSWER

Answers

Answer:

120 minutes

Step-by-step explanation:

12 x 10 = 120

10 x 12 = 120

15 x 8 = 120

You will put the muffins in 10 times and you will put the cookies in 12 times then you will put the scones in 8 times. If you have different numbers, you can first start out with one number and times all of the numbers by that one number. For example I picked 5 to start out with:

12 x 5 = 60 minutes 10 x 5 = 50 minutes 15 x 5 = 75 minutes.

Then I did 12 x 6 = 72 minutes, 10 x 6 = 60 minutes, 15 x 6 = 90 minutes

Since I still don't have the numbers to add up to the same answer, I went to timing them by 7:

12 x 7 = 84 minutes, 10 x 7 = 70 minutes, 15 x 7 = 105 minutes

They are still not the same answer so lets try 8:

12 x 8 = 96 minutes, 10 x 8 = 80 minutes, 15 x 8 = 120 minutes.

Since I don't want to go farther than 120 minutes, I will keep trying different numbers for the other ones besides 15.

12 x 9 = 108 minutes, 10 x 9 = 90 minutes

12 x 10 = 120 minutes, 10 x 10 = 100 minutes

Now we will focus on getting 10 to 120 because we got 12 to 120.

10 x 11 = 110 minutes

10 x 12 = 120 minutes

To sum all of this, it took 8 trips to get 15 minutes to 120 minutes, 10 trips to get 12 minutes to 120 minutes, and 12 trips to get 10 minutes to 120 minutes.

One more way to think about this is:

10, 12, and 15 can go into 120 evenly.

[tex]12\sqrt{120} = 10[/tex]

[tex]10\sqrt{120} = 12\\15\sqrt{120} = 8[/tex]

There are 15 pieces of fruit in the fruit in a bowl and 6 of them are apples. What percentage of the pieces of the fruit in the bowl are apples

0.06%

0.4

6%

40%

Answers

The answer is 0.4 because 6/15 is 2/5 which is 0.4 as a decimal


Write the equation of a line that has m=2 and passes through (-5, -6).

Answers

Answer:

y=2x+4

Step-by-step explanation:

y-(-6)=2(x-(-5))

y+6=2(x+5)

y+6=2x+10

y=2x+10-6

y=2x+4

two numbers are in the ratio 3 is to 5 what is the ratio between the squares
​

Answers

The numbers is 9:15


Which of the following shapes is a prism? Select All that apply.
A. Shape 1: Circle
B. Shape 2: Cylinder
CShape 3: Rectangular Box
D. Shape 4: Cube
E. Shape 5: Pyramid
F. Shape 6: Cone

Answers

Answer:

C D

Step-by-step explanation:

could you help me pleas

Answers

21 for 3 and 10 for 70
First gap is 21
Second gap is 10

You know that 28 strawberries make 4 smoothies, so you also know that 7 strawberries makes 1, you find this out by dividing 28 by 4.

You then need to do 7 x 3 which is 21, and 70 / 7 which is 10.

Hope this helps x

How to covert feet into miles

Answers

1 mile is equal to 5280 feet

Help me please help help

Answers

Greater than means >, so that’s the answer.

Answer:

Step-by-step explanation:

Greater than (<)

The probability of an event is
9
50
Describe the likelihood of the event.
o Certain
0 Likely
O Equally likely to happen or not happen
• Unlikely
o Impossible
Please help

Answers

Answer:

50

Probable

Equally likely to happen or not happen

Step-by-step explanation:

Multiple choice solution of the inequality

Answers

Your answer I’ll be choice C

Evaluate the following expressions: (2×3)2-52

Answers

-40 i believe

I hope is right!!!!

together, ben and kyle have 43 fishing lures. Kyle,(K), has 15 more lures than ben, (B). which statements are correct for this situation

Answers

Answer:

k + b = 43

15 + b = 43

b = 28

Scale factor from A to B is 4:5.
Help

Answers

Answer:

24

Step-by-step explanation:

4/5 = x/30, then (4×30)/5 =24

The missing value is 24.

We have,

From the figure,

We can write an expression as:

4:5 = x : 30

This can be written as,

4/5 = x/30

Now,

Cross multiply.

x = 4 x 30 / 5

x = 4 x 6

x = 24

Thus,

The missing value is 24.

Learn more about expressions here:

https://brainly.com/question/3118662

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Help! I’ll reward brainest its pretty easy

Answers

I sent you a message of 818/1000

Find the area of the rectangle below. Show your work​

Answers

Answer:

32

Step-by-step explanation:

you can multiply

4 up 8 across so 4 x 8 = 32

Answer:

Area= 32 units

Step-by-step explanation:

A=Bh or Area=Base times height. the base is 8 and the height is 4. 8 times 4 is equal to 32.

How many parts can all 6 cutting machines cut in 1 minute?

Answers

Answer:

is there an image where i can see?

Step-by-step explanation:

Solve
9x^2 + 3x = 20

Answers

Answer:

20 barriles diarios y en los trajes y que es el que

Explain how to solve 5x^2-3x=25 by completing the square. What are the solutions?

Answers

Answer:

x1 = √(509) /100 + 3/10

x2  = -√(509) /100 + 3/10

Step-by-step explanation:

We do completing the square as follows:

1. Put all terms with variable on one side and the constants on the other side.

5x^2 - 3x = 25

2. Factor out the coefficient of the x^2 term.

5(x^2 - 3x/5) = 25

3. Inside the parentheses, we add a number that would complete the square and also add this to the other side of the equation. In this case we add 9/100 and on the other  side we add 9/20.

5(x^2 - 3x/5 + 9/100) = 25 + 9/20

4. We simplify as follows:

5(x^2 - 3x/5 + 9/100) = 25 + 9/20

5(x - 3/10)^2 = 509/20

(x - 3/10)^2 = 509/100

x1 = √(509) /100 + 3/10

x2  = -√(509) /100 + 3/10

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