Mathematics College

solve the linear system below using substitution


y=2x+2

4x+y=-10

fill the blanks with the solution​

Solve The Linear System Below Using Substitutiony=2x+24x+y=-10fill The Blanks With The Solution

Answers

Answer 1

Answer:

( -2, -2)

Step-by-step explanation:

plug in 2x+2 for y

4x + 2x + 2 = -10

6x +2 = -10

6x = -12

x=-2

y= 2(-2)+2

y = -4+2

y= -2

Related Questions

which expression is the sun of cubes?

Answers

Answer:

Step-by-step explanation: We have been given 4 expressions. We are asked to choose the expression that represents sum of cubes.

We know that sum of cubes is in form .

We can see that 1st and 2nd option has a negative sign. Therefore, these options cannot be sum of cubes.

Let us check 3rd and 4th options one by one.

We can rewrite our expression by writing terms as cubes:

Therefore, expression  is a sum of cubes.

In 4th expression, we can see that . We cannot represent it as a cube. Similarly, we cannot represent  as a cube. Therefore, 4th expression is not correct.

Which of the following phrases could represent the expression k - 4?
four less a number
a number less than four
a number decreased by four
a number subtracted from four

Answers

Answer:

a number decreased by four

Step-by-step explanation:

Write a word problem that could be solved with the equation
0.15x + 200 650

Answers

Answer:

13.3

Step-by-step explanation:

20 POINTS
All side lengths in quadrilateral PQRS measure 6 units. A transformation maps
PQRS to P'Q'R'S'. All sides of P'Q'R'S' measure 3 units. Is the mapping isometric?
Explain.

Answers

An isometric transformation is a transformation that preserves the distance and angles between a pre-image and its image. Examples are: translation, reflection, rotation.

Answer:

No, the side lengths are not preserved.

This is a non isometric transformation.

Can some one please help with this question

Answers

Answer:

5x + 9

Step-by-step explanation:

f(x) = 3x+4

g(x) = 2x + 5

(f+g)(x)

(3x+4) + (2x + 5)

= 5x + 9

// however I'm unsure

If Toni is trying to calculate her net worth, which of the following items would go on the liabilities list? *
A. Original sale price of her car
B.Her Mortgage
C.Savings account balance
D. Value of her 401(k) plan​

Answers

Answer:

B.Her Mortgage

Step-by-step explanation:

The net worth is the value that left after deducting the liabilities from the assets

Here as per the given options, the original sale price of the car, saving account balance and the value of her 401(k) plan is an asset

While the liabilities is the mortgage that took by her as she has to repay the amount taken by the financial insititution. It is her responsibility to pay back all the dues to the bank

Therefore the option B is correct

x + 1 - x = 1

Solve the equation

Thanks

Answers

It would be 1=1 since the x and -x cancel eachother out you are just left with 1=1
1=1 is the answer because x+1-x=1 is combined with like terms and the x’s cancel out so you’re left with a positive one equaling a positive one

the amount of water in a barrel decreased is 9 5/8 pints in 7 weeks

Answers

Answer:

1 3/8 in one week

Step-by-step explanation:

{4,5,6} is a subset of {4,5,6} True False

Answers

It’s true
They are the same numbers so they have to be the subset of each other

Work out (7 x 10^5) divided by (2 x 10^2)

Answers

Answer: 3500

Step-by-step explanation:

7x10^5

————-

2x10^2

= 700,000/200

= 3,500

The height of a right cylinder is 3 times the radius of the base. The volume of the cylinder is 241 cubic units.
What is the height of the cylinder?
2 units
4 units
6 units
8 units

Answers

Answer: 6 units

Step-by-step explanation:

There are 24 more students in the seventh grade class than the number g in the eighth grade class. The seventh grade class has 160 students. Write and solve an equation to find the number of students in the eighth grade class.

Answers

Answer:

y= 8th grade class,

y + 24 =160

subtract 24 from both sides

y=136

there are 136 students in the eight grade class

Step-by-step explanation:

Answer:

136 students

Step-by-step explanation:

7th grade= 160 students

8th grade= g students

g= 160-24

g= 136 students

- I hope this helps have a great day!

The perimeter of a rectangle is 80 cm. The width is 10 cm more than twice the length. What
is the length and width of this rectangle? P=2W+2L

Answers

Answer:

L=10cm , W=30cm

Step-by-step explanation:

First use the given that W=10+2*L

Use P=2W+2L=80, substitute W in the perimeter formula

2(10+2L)+2L=80 and solve for L,

20+4L+2L=80 isolate variable L and combine like terms,

6L=80-20,

L=10, so W=10+2*10=10+20=30

The graph models the height​ h, in​ meters, of a hot air​ balloon, t minutes after beginning to descend. How high was the balloon when it began its​ descent?

Answers

Answer:65

Step-by-step explanation: idek i just had this question & that’s the right answer <33

2. There is a 50% chance that Elaine will be late to school, a 40% chance that she will be late to
school and eat breakfast, and a 60% chance that she will be late for school or eat breakfast. What
is the probability that Elaine will eat breakfast?
(1 Point)
30%
Ο Ο
40%
50%
Ο Ο
60%

Answers

Answer:

50%

Step-by-step explanation:

Given that:

P(late) = P(L) = 50% = 0.5

P(Eat) = P(E) =?

P(LnE) = 40% = 0.4

P(LuE) = 60% = 0.6

P(LuE) = P(L) + P(E) - P(LnE)

0.6 = 0.5 + x - 0.4

0.6 = 0.1 + x

0.6 - 0.1 = x

0.5 = x

P(E) = 0.5

0.5 * 100% = 50%

I need help on number 6 cuz I’m saying it’s F while my friend is saying that it’s H ‍♀️

Answers

The answer is H, She was correct

Answer: You are correct, the answer if F. If I got it correct, can you please tell me?

Chris got 28 out of 35 correct in his test. What fraction of the marks did he get wrong? Give your answer in its simplest form.

Answers

Answer:

3/35

Step-by-step explanation:

Chris got 28 out of 35 correct in his test

So

he get wrong=3

fraction= 3/35

So 3/35 is the answer

ryan has $0.75 worth of pennies and nickels. He has 3 more nickels than pinniped. Determine the number of pennies and the number of nickels that ryan has

Answers

Answer:

Ryan has 10 pennies and 13 nickels.

Step-by-step explanation:

Let the number of pennies be p and the number of nickels be n.

We have two unknowns, the number of pennies and the number of nickels, so we need two equations. One equation will deal with the value of the coins. The other equation will deal with the number of coins.

Value of coins:

1 penny is worth $0.01; p pennies are worth 0.01p.

1 nickel is worth $0.05; n nickels are worth 0.05n.

The total amount the coins are worth is

0.01p + 0.05n

The coins are worth $0.75, so we have our first equation.

0.01p + 0.05n = 0.75       Equation 1

Number of coins:

He has p pennies.

The number of nickels is 3 more than the number of pennies.

Since the number of pennies is p, then the number of nickels is p + 3.

That gives us our second equation.

n = p + 3        Equation 2

System of equations:

Now we have a system of two equations in two unknowns:

0.01p + 0.05n = 0.75

n = p + 3

Since the second equation is already solved for n, we can use the substitution method.

Replace n in the first equation with p + 3.

0.01p + 0.05n = 0.75

0.01p + 0.05(p + 3) = 0.75

Distribute the 0.05

0.01p + 0.05p + 0.15 = 0.75

Combine like terms on the left side.

0.06p + 0.15 = 0.75

Subtract 0.15 from both sides.

0.06p = 0.6

Divide both sides by 0.06.

p = 0.6/0.06

p = 10

Now we substitute 10 for p in the second equation to find the value of n.

n = p + 3

n = 10 + 3

n = 13

He has 10 pennies and 13 nickels.

Check:

A) 13 - 10 = 3 He does have 3 more nickels than pennies.

B) $0.01(10) + $0.05(13) = $0.10 + $0.65 = $0.75

The number of coins and the value of the coins both check out, so our answer is correct.

Answer: Ryan has 10 pennies and 13 nickels.

Give 5 numbers that are divisible by 4. Show the process

Answers

Answer:

8, 12, 16, 20

Step-by-step explanation:

8/4 = 2

12/4= 3

16/4= 4

20/4= 5

A bacteria triples its original population in 25 hours (A=3A0). How big will its population be in 100 hours?

Answers

Answer:

81 times the original size.

Step-by-step explanation:

AA0ktA=3A0=?=?=25hours=A0ekt

Substitute the values in the formula.

3A0=A0ek⋅25

Solve for k. Divide each side by A0.

3A0A0=e25k

Take the natural log of each side.

ln3=lne25k

Use the power property.

ln3=25klne

Simplify.

ln3=25k

Divide each side by 25.

ln325=k

Approximate the answer.

k≈0.044

We use this rate of growth to predict the number of bacteria there will be in 100 hours.

AA0ktA=3A0=?=ln325=100hours=A0ekt

Substitute in the values.

A=A0eln325⋅100

Evaluate.

A=81A0

At this rate of growth, we can expect the population to be 81 times as large as the original population.

Answer:

81

Step-by-step explanation:

From a standard deck of 52 cards, you’re dealt 5 cards. How many hands have at least one spade and at least one queen?

Answers

Answer: c

Step-by-step explanation:

I took the quiz

Tip of 20% on a $5 meal

Answers

Answer:

$1

Step-by-step explanation:

20% of $5 = 0.20*5 = $1.00

The perimeter of a rectangular picture frame is 62 inches. The length of the 1
frame is one more than twice its width. What are the length and the width
of the frame?

Answers

Answer- each width = 10, each length = 21

Explanation: from the question we know that L=2w + 1 and we also know that a rectangle has the perimeter of 62 when we plug it in the equation we will get 62= 2(2w+1+w) we will multiply the 2 now and we will get 62=4w+2+2w we will combine like terms and we will minus two from both sides ending up with 60=6w we will divide six from both sides and we will get w=10 then we will use l=2w+1 to find the length and it will be 21

A person who weighs 100 pounds on Earth weighs 16.5 pounds on the moon. If a boy weighs 60 pounds on Earth, how much does he weigh on the moon?

Answers

Answer:

The answer is 10 Pounds.

Step-by-step explanation:

You get 10 pounds because you divide your weight by 6 and 60 divided by 6 is 10.

Answer:

3.636363636

Step-by-step explanation:

Because that is 16.5 percent of 60, you can find this by dividing 60 by your percentage your trying to find of it, 16.5 in this case.

Suppose that you plan on taking a summer job selling magazine subscriptions. The magazine company will pay you $1.25 for selling the first subscription. For each additional subscription​ sold, the magazine company will pay you 25 cents more than what was paid for the previous subscription. How much will you earn by selling 200 magazine​ subscriptions?

Answers

Answer:

the organize is a explanation to the earth

Step-by-step explanation:

yan lang alam ko

Find the measure of each angle 9-17. PLZZZ HELP will give brainliest!!!! Pleaseee help!!!!!

Answers

Answer:

Step-by-step explanation:

l║m and line t is the transversal line intersecting these parallel lines.

9). If m∠7 = 100°,

    m∠3 = m∠7 = 100° [Since, ∠3 and ∠7 are alternate interior angles]

10). m∠7 = 95°

   m∠6 + m∠7 = 180° [Consecutive interior angles]

   m∠6 = 180° - m∠7

   m∠6 = 180° - 95°

   m∠6 = 85°

11. m∠1 = 120°

   m∠1 = m∠5 = 120° [Alternate exterior angles]

12. m∠4 = 20°

   Since, m∠4 = m∠6 = 20° [Vertically opposite angles]

   And m∠6 + m∠7 = 180° [Consecutive interior angles]

   20° + m∠7 = 180°

   m∠7 = 160°

13. m∠3 = 140°

   m∠3 + m∠6 = 180° [Linear pair of angles]

   m∠6 = 180° - m∠3

            = 180° - 140°

            = 40°

    m∠6 = m∠8 = 40° [Corresponding angles]

14. m∠4 = 30°

    m∠4 + m∠1 = 180° [Consecutive exterior angles]

    m∠1 = 180° - 30°

    m∠1 = 150°

15. m∠4 = 40°

    m∠4 = m∠2 = 40° [Corresponding angles]

16. m∠7 = 125°

    m∠6 + m∠7 = 180° [Consecutive interior angles]

    m∠6 = 180° - 125°

             = 55°

    m∠6 = m∠4 = 55° [Vertically opposite angles]

17. m∠1 + m∠3 = 230°

    Since, m∠1 = m∠3 [Corresponding angles]

    m∠3 + m∠3 = 230°

    m∠3 = [tex]\frac{230}{2}[/tex]

             = 115°

    m∠3 + m∠6 = 180° [Linear pair of angles]

    m∠6 = 180° - 115°

    m∠6 = 65°

PLZ HELP MEEEE!!!
Hannah is trying to figure out how tooth size is determined in two different wolves. In wolf 1, the copies of the gene are different from each other. In wolf 2, the copies of the gene are the same as each other. How does this affect how many types of proteins there are in each tooth cell?
a
Wolf 1 has one type of protein for the tooth size feature. Wolf 2 has one type of protein for the tooth size feature.
b
Wolf 1 has two types of protein for the tooth size feature. Wolf 2 has one type of protein for the tooth size feature.
c
Wolf 1 has two types of protein for the tooth size feature. Wolf 2 has two types of protein for the tooth size feature.
d
It is impossible to say anything about proteins from the given information.

Answers

Answer:

It is impossible to say anything about proteins from the given information.

Step-by-step explanation:

Determine if triangle XYZ with coordinates x (1, 1), y (5,6) and z (6,2) is a right triangle

Answers

Answer:

No(im not totally sure though because its slanted.)

Step-by-step explanation:

desmos.

Elias’s teacher has given him a rectangle that is 15 feet by 20 feet. She has asked him to create a new rectangle using a scale factor of 8/3. Elias says that will be a reduction because the scale factor is a fraction. Is he correct? Explain.

Answers

Answer:

17.68 feat long

Step-by-step explanation:

Answer:

17.68 feet

Step-by-step explanation:

Children may ask what is 6+100, 6+100 equals to 106

Answers

Answer:

ye thats true..

Step-by-step explanation:

Other Questions
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She raised my hand to her eyes in a questioning way, and I nodded energetically. The beads were sewed in the right place and I could not contain myself for joy; but immediately I lost all interest in the doll. Which line from the excerpt is an important detail that would be included in a summary of the excerpt? It was the most comical shapeless thing I tumbled off the seat and searched under it until I found my aunt's cape the absence of eyes struck me more than all the other defects but immediately I lost all interest in the doll. What is the Product of 2+-121 And 3+-64? The answer must be as a complex number in standard form. Please help What was the purpose of Hammurabi's Code of laws? PLZZZ HURRY!! I WILL GIVE 20 POINTSIn fruit flies, straight wings are dominant and curly wings are recessive. What will the generations look like? Assume that Mendels method of crossing two true breeding parents with opposite traits is followed. 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Who was the first in Salem to become afflicted, and how did this affliction spread?4.Who was Tituba, and why was she arrested for witchcraft?5.Why did Sarah Cloyce believe that Ann Carr Putnam might accuse her and her sisters (Rebecca Nurse and Mary Eastey)?6.Why was Giles Corey pressed to death?7.How was spectral evidence used to condemn the accused, and of what economic status were most of them?8. What did Mary Eastey mean when she said, They are possessed and yet they are not?9. Why did Governor Phips eventually suspend the trials and order the release of the prisoners?10. How many people fell victim to this witch hunt, and according to Sarah documented evidence, what was responsible for it?