Mathematics College

(2x + y = -2
(5x + 3y = -8
Solve by substitution

Answers

Answer 1

(2, -6)

Step-by-step explanation:

y = -2 - 2x

5x + 3 (-2-2x) = - 8

5x - 6 - 6x = - 8

-x - 6 = 8

- 6 + 8 = x

2 = x

x = 2

y = -2 -2x

y = -2 -2(2)

y = -2 -4

y = -6

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

Answer 2

Answer: (2, -6)

Step-by-step explanation: look at the attached image

(2x + Y = -2(5x + 3y = -8Solve By Substitution

Related Questions

8 is 20% of 32, is it true or false?

Answers

Answer: False

Step-by-step explanation: 8 is 20% of 40.

False. 6.4 is the answer.

Gloria earned $26 for babysitting for 4 hours. Write and Solve an equation to determine how much Gloria would earn after babysitting 25 hours.​

Answers

Answer:

Equation: ($26÷4 hours) × 25 hours

Answer: $156.25

Step-by-step explanation:

First, you would have to find out how much she earns per hour, so $26÷4. Then you multiply that by 25.

(26÷4) x 25=$156.25.

(hope this helps :P)

lcm and hcf of 24 and 36​

Answers

Answer:

LCM is the least common factor the number common in both and left numbers, Therefore, HCF and LCM of numbers 24 and 36 are 12 and 72 respectively.

Step-by-Step Explanation:

Find the prime factorization of 24

24 = 2 × 2 × 2 × 3

Find the prime factorization of 36

36 = 2 × 2 × 3 × 3

Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:

LCM = 2 × 2 × 2 × 3 × 3

LCM = 72

Which property is used below?
If 4x + 18 = 42, then 4x + 18 – 6 = 42 – 6.

Answers

Answer:

Additive property.

Step-by-step explanation:

Find the distance between the points.
(7,9) and (-1,9)

Answers

Answer:

The distance is 8 between (7,9) and (-1,9)

Step-by-step explanation:

For:

(X1, Y1) = (7, 9)

(X2, Y2) = (-1, 9)

d=(−1−7)2+(9−9)2√

d=(−8)2+(0)2√

d=64+0√

d=6–√4

d=8

Any one 100% kno these two answers

Answers

Answer:

The first question would likely be y=10.
The second question would likely be x=20.

If you can help thanks
!!!!!!!!​

Answers

Answer:

Step-by-step explanation:

Side length = square root of 8100

Divide 8100 square feet by four because a square has four equal sides

Select the equations where x = 8 is the solution. Select all that apply (select 3).
Group of answer choices

x - 2 = 10

40 = 5x

x/2 = 8

x + 14 = 24

x + 2 = 10

x/8 = 1

Answers

Answer:

Step-by-step explanation:

1. x - 2 = 10

x = 10 + 2 = 12

2. 40 = 5x

40/5 = x

x = 8

3. x/2 = 8

Multiply by 2 on both sides

x = 16

4. x + 14 = 24

x = 24 - 14 = 10

5. x + 2 = 10

x = 10 - 2 = 8

6. x/8 = 1

Multiply by 8 on both sides

x = 8

No 2 5 and 6 is the correct answer

Six subtracted from the product of 9 and a number is at least –24

Answers

Answer:

it is a decimal number. it is 8x smaller than 9.

Step-by-step explanation:

Mark brainliest pleae

Use the functionſ to answer the question. f () = 3x2 - 7x - 32 What is the value of f (-4)? A. -52 B. -12 O c. 44 D. 140 +
[tex]f{x} = 3x2 - 7 x - 32 = [/tex]
​

Answers

Step-by-step explanation:

step 1. please write it f(x) = 3x^2 - 7x -32

step 2. f(-4) = 3(-4)^2 -7(-4) - 32

step 3. f(-4) = 48 + 28 - 32

step 4. f(-4) = 44.

pls hurry!!

What is the value of x in the figure below? (3x +B) 35- 145 45 1 / 2 81​

Answers

9~~~~~~~~~~~~~~~~~~~~~~~~~~~~

A quadrilateral has two angles that measure 70 and 60. The other two angles are in a ratio of 4:19 what are the measures of those two angles.

Answers

Answer:

We can obtain the answer from the Angle sum property of a quadrilateral.

Angle sum property of a quadrilateral =360 degrees.

So, 70+60+4x+19x=360 degrees

130+23x=360degrees

23x=360-130,230

23x= 230 divided by 23, 10

X=10

Angles are:-

4x=4*10=40

19x=19*10=190

Can you answer this? Take ur time I'm not in a hurry.
Thanks!

Answers

i believe the correct graph is the bottom left

A road is
4/5
of a mile long. A crew needs to repave 2/5
of the road. How long is the section that needs to be repaved?
Write your answer in simplest form.

Answers

Answer: 20/10

Step-by-step explanation:

Take (calculate) 4/5 of 2/5 mile:

4x5= 20

---- * ---- = 20/10

2x5= 10

The section that needs to be repaved is 1/2 of a mile.

What is a fraction?

Fractions represent the parts of a whole or collection of objects.

A fraction has two parts. The number on the top of the line is called the numerator and the number on the top of the line is called the denominator.

Now it is given that,

Length of road = 4/5 of a mile

Road needs to repave = 2/5 of the road

Thus, road needs to repave = 2/5 of 4/5

⇒ road needs to repave = (2*4)/(5*5)

⇒ road needs to repave = 10/20

or, road needs to repave = 1/2

Thus, the section that needs to be repaved is 1/2 of a mile.

To learn more about fractions:

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HELP PLS DONT NEED TO DO THE PROVLEMS JUST HELP

Answers

Answer:

i have NO idea dud

Step-by-step explanation:

Mr. Smith has owned his car for 12 years. The car has 169,344 miles recorded on the odometer. What is the average number of miles Mr. Smith's car has been driven each year?​

Answers

Answer:

14,112 mile/year

Step-by-step explanation:

169344÷12 = 14,112 mile/year

Picture at the top to help with solving the answer.​

Answers

Answer: B and D

Step-by-step explanation:

I see you picked the first one which is close but not right. This isn't right because you are adding the area of both rectangles together and in the first choice the + 7 should be 7y because y is the height which is why the 4th choice is correct and the second choice if you distribute you get 5y + 7y which is the same so that would be right as well.

Answer:

answer of this question is b

The anticoagulant warfarin is often used as a pesticide against house mice, Mus musculus. Some populations of the house mouse have acquired a mutation in the vkorc1 gene from hybridizing with the Algerian mouse, M. spretus (Song et al. 2011). In the Algerian mice, this gene confers resistance to warfarin. In a hypothetical follow-up study, researchers collected a sample of house mice to determine whether presence of the vkorc1 mutation is associated with warfarin resistance in house mice as well. They fed warfarin to all the mice in a sample and compared survival between the individuals possessing the mutation.
a. Identifiy the two variables measured in the study and indicate which is the explanatory and which is the response variable.
i. Explanatory:
ii. Response:
b.Identify the scales on which each of the two variables is quantified (nominal, ordinal, inteval, ratio).
c. What do you think was the intended target population for the study? Why?
d. Do you consider the follow up study to be a manipulative experiment or an observational experiment? Explain.
e. Do you think the researchers used a random sample? Explain.

Answers

Solution :

Response variable is the variable whose value is to be predicted or the value  is influenced. It is also known as the dependent variable. While the variable which affects the values and is used for the prediction is known as the explanatory variable or the independent variable.

i. The explanatory variable in the study is the Vkorc I mutation.

ii. The response variable in the study is the Warfarin resistance.

b). The explanatory variable which comes under the nominal scale in this study is the Vkorc I mutation.

While the response variable or the independent variable that comes under the interval scale in the study is the Warfarin resistance.

c). The group of the individuals in this study is called as  population. The target population in the study is the house mouse which is required as the mutation in Vkorc 1 gene from the hybridizing with Algerian mouse.

d). The study is a manipulative experiment as the changes that have already introduced in house mice and the treatments are under control.

e). No in this study the researcher did not use any random sample.

why this upgrade thingy stay popped up

Answers

Answer:

Step-by-step explanation:

Answer:

its gonna stay it doesnt go away for me atleast

Step-by-step explanation:

brainliest?

please help with question ​

Answers

Answer:

The measure of angle wxz is 130°?

The measure of the angle is 130 degrees. You do this by just adding the two angles together since they just make up the whole angle.

After the Sutton family finished their meal at a local restaurant, the waiter brought them a check for $48.86. If Mrs. Sutton leaves a 20% tip, what amount of tip wages will the waiter receive?

What will the total meal cost?

How much should you tip a hairstylist, pizza delivery person, and taxi driver?

Answers

Answer:

58.23

Step-by-step explanation:

The amount of tip wages will the waiter receive will be $9.77. Then the total meal cost will be $58.63.

What is the percentage?

The quantity of anything is stated as though it were a fraction of a hundred. A quarter of 100 can be used to express the ratio. Per 100 is what the term percent signifies. The symbol ‘%’ is used to symbolize it.

After the Sutton family finished their meal at a local restaurant, the waiter brought them a check for $48.86. If Mrs. Sutton leaves a 20% tip. Then the amount of the tip will be

Tip = 20% of $48.86

Tip = 0.20 x $48.86

Tip = $9.772

Then the total meal cost will be

Total cost = $48.86 + $9.772

Total cost = $58.63

The amount of tip wages will the waiter receive will be $9.77. Then the total meal cost will be $58.63.

More about the percentage link is given below.

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help me please! i will give brainliest! and 50 points

Answers

Answer: 2.8

Step-by-step explanation:

The Quadrilateral ABCD is just being rotated and nothing else, so the length of the segments don't change.

so whatever value for CD is also the the value for C'D' which is 2.8

Eighteen technicians in a cell phone repair shop are randomly selected to participate in a study comparing two screen repair techniques. They are randomly assigned one of the two techniques. The manager trains 9 technicians on one technique and trains the other 9 technicians on the second technique. He then records the number of screen repairs each technician does in one week. Which inferential statistical test would be most appropriate for this scenario?

A one-sample z-test
A paired t-test
A chi-square goodness-of-fit test
A one-sample t-test
A two-sample t-test

Answers

Answer:

a two sample t test

Step-by-step explanation:

The inferential statistical test that would be most appropriate for this scenario is a two-sample t-test option fifth is correct.

What is a t-test?

A t-test is a hypothesis-testing technique for analyzing the means of one or two populations. A t-test can be used to see if a single group differs from a known value, if two groups differ from each other (an independent two-sample t-test), or if paired measurements show a significant difference.

Based on the information provided, there are two techniques, each with nine technicians. The sample sizes are tiny, in other words. Furthermore, the two samples are unrelated to one another. As a result, a two-sample t-test is appropriate.

Thus, the inferential statistical test that would be most appropriate for this scenario is a two-sample t-test option fifth is correct.

Learn more about the t-test here:

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plz help me really fast

Answers

Answer:

$38.16

Step-by-step explanation:

8% of $48 is $3.84 so we subtract $48-$3.84=$44.16. Because of the coupon we then remove $6. $44.16-$6=$38.16

Answer:

$38.16

Step-by-step explanation:

15 points , help!
Triangle JKL is similar to triangle MNO. Find the measure of side MN. Round your
answer to the nearest tenth. Figures are not drawn to scale.
L
7
K
33
3
N
J
M

Answers

Answer:

14.1 units

Step-by-step explanation:

It says "not drawn to scale," but I had to assume that the sides of each triangle are relative to one another.

one side of a square is 12 CM. If the scale factor of 1/4 is applied to it, what is the measure of a side of the new square?​

Answers

Answer:

3 cm

Step-by-step explanation:

One quater of 12 is 3, and you find this out by diving 12 by 4, giving the answer of 3

12 ÷ 4 = 3

You make photo props by cutting rectangles out
of parallelogram-shaped pieces of wood. Which
proto props have an area of 32 square feet?
ft
4 ft
& ft
1 ft
8 ft
5 ft
4 ft
6 Ft
1010
8 ft
4 11
2 ft
6
4 ft

Answers

Answer:

I can only read the top 2 dimensions:

The one on the left is 32 ft^2, the one on the right is 31 ft^2

Step-by-step explanation:

left top: (8x5)-(2x4) = 32

right top: (8x4)-(1x1) = 31

left low: (10x?)-(4x7) = ?

right low: (8x?)-(2x6) = ?

Jeff is selling hamburgers and pizza at the tailgate party. The cost of 4
hamburgers and 2 slices of pizza is $15. The cost of 6 hamburgers and 6
slices of pizza is $27. The system of equations below represents the
situation: 4h + 2p = 15; 6h + 6p = 27. If a customer bought 1 hamburger and
2 slices of pizza, how much would they spend?

Answers

Answer:

Step-by-step explanation

Answer - its not 7. 50  it 6.00  

Step-by-step explanation:

i just solved it, believe me its 6.00

a credit check is required for which of the following financing options

a. deferred payment plan
b. installment loan
c. rent to own plan
d. differed payment plan and installment loan

Answers

A should be the answer sorry if wrong it should be it tho

Camden invested $7,200 in an account paying an interest rate of 4.4% compounded monthly. Assuming no deposits or withdrawals are made, how long would it take, to the nearest year, for the value of the account to reach $13,140?

Answers

The value of the account to reach $13,140 will take 14 years assuming no deposits or withdrawals are made .

What is compound interest?

Compound interest is an interest accumulated on the principal and interest together over a given time period. The interest accumulated on a principal over a period of time is also accounted under the principal.

Formula of compound interest :

[tex]A = P (1+ \frac{r}{100} )^{n}[/tex]

Where,

A = final Amount

P = initial principal

r = rate per annum

n = time in years

According to the question

Camden invested (P) = $7,200

Interest rate per month (r) = 4.4%

Amount  to reach =  $13,140

now , using Formula of compound interest

[tex]A = P (1+ \frac{r}{100} )^{n}[/tex] ere , n = n/12 (as concluding monthly wise )

Substituting the values

[tex]13140 = 7200 (1+ \frac{4.4}{100} )^{\frac{n}{12} }[/tex]

1.825  = [tex](1+ \frac{4.4}{100} )^{\frac{n}{12} }[/tex]

1.825  = [tex](1..044 )^{\frac{n}{12} }[/tex]

n ≈ 168 months (approx.)

n = 14 years (nearest year)

Hence, the value of the account to reach $13,140 will take 14 years assuming no deposits or withdrawals are made .

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