Mathematics High School

Solve the system by substitution.
y = 5x
y = 9x + 8

Answers

Answer 1

Answer:

(-2,-10)

Step-by-step explanation:

So if y=5x and if y=9x+8 then those should be able to equal each other (substitution):

5x=9x+8

Subtract 5x from both sides:

0=4x+8

Subtract 8 from both sides:

-8=4x

Divide both sides by 4:

x=-2

If x=-2, then we can just plug it back into the first equation:

y=5(-2)

Simplify:

y=-10

Answer 2

Answer:

x = -2

y = -10

Step-by-step explanation:

So if y = 5x

Then you can put that in place of the y

5x = 9x + 8

Get the x's all on one side by subtracting

-4x = 8

Divide both sides by -4

x = -2

Then insert x into the first equation, so

y = 5(-2)

y = -10

Related Questions

What is the circumference of a circle with a diameter of 3 feet? Use 3.14 for
TT

Pls help

Answers

918155555332feet +3.14

Answer:

9.42

Step-by-step explanation:

During each week of piano lessons, Nate learns to play 1 new piece. Is the total number of piano pieces Nate learns proportional to the number of weeks he takes lessons?

Answers

Answer:

Yes

Step-by-step explanation:

1 piece per week can be written as a 1:1 ratio

factorise fully 6x+15x²

Answers

Answer: the fully factorized answer is 3x(2 + 5x)

Answer:

6x time 15x times 15x you will get your answer

Step-by-step explanation:

easy A F.

Write an explicit formula for an, the nth term of the sequence 15, 12,9,....

Answers

Answer:

18-3n

Step-by-step explanation:

18-3(1)=15

18-3(2)=12

etc

etc

What’s the answer please?

Answers

Answer:

19.375

Step-by-step explanation:

Answer:

19.375

Step-by-step explanation:

[-15(-1.5)] + [(-2.5) x 1.25]

= [22.5] + [-3.125]

= 19.375

The price of a watch was increased by 20% to £162.
What was the price before the increase?​

Answers

The original price is 135
Step-by-step explanation:
Write equation. Let o be original price, r be rate of increase, P be the increased price. o+ro=P
Substitute values. Original price (o) is unknown, so that will stay as it is; we know that the increased price (P) is 162; we know that the rate of increase (r) is 20%, which in decimal form is 0.20 o+0.20o=162
Add like terms. o is the same as 1o. So 1+0.20 is 1.20. 1.20o=162
Isolate the variable (o). To isolate o, you need to divide both sides by 1.20. 1.20 divided by 1.20 is the same as 1. 162 divided by 1.20 is 135. o=135
Check your work. Plug in the values into the equation and check if it is correct: o+ro=P becomes (135)+(.20)(135)=162. That is simplified into 135+27=162, which is further simplified into 162=162
It’s correct, the answer is 135

Answer:

£129.60

Step-by-step explanation:

10% =  £16.2

20% = £32.4

£162 - £32.40 = £129.60

Can smbdy help me???

Answers

9514 1404 393

Answer:

  a.  One solution

Step-by-step explanation:

These are two linear equations with different x-coefficients. They have one solution.

__

Additional comment

If the x-coefficients are the same, the system may have 0 or infinite solutions, depending on the constants. It is not possible for a system of linear equations to have exactly two solutions.

5x^2 + 42x + 16

what would the area be if x = 5

Answers

Answer:

The area would be 301 if x=5.

Step-by-step explanation:

Given expression is:

5x²+42x+16

We have to find the area when x=5

So putting x=5 in the given expression.

Area = 5(5)²+42(5)+16

Taking square of 5 and multiplying 42 by 5

Area = 5(25)+210+16

Area = 75+210+16

Adding all the terms

Area = 301

Hence,

The area would be 301 if x=5.

helpppp asap , help a girl outtttt :’(

Answers

Answer:

4. x=1/5y+3 5. x=-6/9y+2 6. x=-6/1y+4

Step-by-step explanation:

math and stuff

sorry if I am wrong, I haven't done this ina while and never studyed it much

Need help cant find the right answer for this one

Answers

Step-by-step explanation:

the answer is a

hope it help....

Answer the questions please

Answers

Answer:

The first one, As time increases, the number of Perennials sold has decreased

Step-by-step explanation:

Answer:

It's A or the first one on the top.

Step-by-step explanation:

Is it A or D? im kind of confused

Answers

the answer is D bc when you do the equation it is w^3 z^7

A bathtub is filling with water at a rate of 60 liters per minute.
How many liters of water are in the bathtub after t minutes?
Write your answer as an expression.

Answers

60t sjjdksjsosjdksksksjskznxls

Answer:

YO BIG MAMMA

Step-by-step explanation:

You just yell to your mom and say YO BIG MAMMA and TADA she loves you

A box of chocolates contains five milk chocolates, five dark chocolates, and five white chocolates. You randomly select and eat three chocolates. The first piece is milk chocolate, the second is dark chocolate, and the third is white chocolate. Is it independent or dependen?

Answers

The first piece is milk chocolate, the second is dark chocolate, and the third is white chocolate independent and the probability is 25/546.

What is probability ?

Probability of something is the occurrence of a certain event out of the total events that can occur.

According to the given question

The total no. of chocolates in the box is

(5 + 5+ 5) = 15 chocolates.

The probability of eating a milk chocolate first a dark chocolate second and a white chocolate third is an independent event because occurrence of next event do not depend upon the previous event.

There are 5 milk chocolates.

So, probability of getting a milk chocolate first is

P(mc) = 5/15

= 1/3

Now the the chocolate can no be replaced because it is eaten

∴ Probability of getting a dark chocolate second is

P(dc) = 5/14                          (as the total no. of chocolate is reduced by 1

                                                                    because it has been eaten)  

And the probability of getting a white chocolate in 3rd attempt is

P(wc) = 5/13

As the first piece is milk chocolate, the second is dark chocolate, and the third is white chocolate is an independent event their probability is

P(mc) ∩ P(dc) ∩ P(wc)

= P(mc) × P(dc) × P(wc)

= (1/3 × 5/14 × 5/13)

= 25/546.

Learn more about Probability here :

https://brainly.com/question/11234923

#SPJ1

                                                                                                                                                             

Sasha says that she drew an acute isosceles triangle with side lengths of 6 cm,9 cm,and 12 cm and the angles are of 30 degree,50 degrees,and 100 degrees. Danielle says that not possible.Using sides and angles, who is correct. Most helpful gets the Brainliest.

Answers

Answer:

Danielle is correct. An isosceles triangle has two angles that are the same and one that's different.

Step-by-step explanation:

Tell me if it is wrong

I would appreciate a brainliest!

Have a nice day :D

✨PLEASE HELP✨DUE SOON✨

Answers

Y = 4
X = 5

Solve 6x-2(-2x+14)=22
Then solve y=-2*5+14
(5,4)
y=4 and x=5
sorry if this is wrong

please ill give brainliest if correct

What is an equation of the line that passes through the point (-1,4) and is parallel to the line x+y=4x?

Answers

Answer:

Y= 14x+5

Step-by-step explanation:

A local business in Central Florida is looking for a new employee to manage the company’s website. The company is looking to hire someone who can type at least 55 words per minute. Maria can type at a constant rate of 696 words in 12 minutes. Does Maria type at a fast enough rate to qualify for the job? PLSS HELP

Answers

Answer:

The answer is 58

Step-by-step explanation:

The number 696 with 12 minutes you can divide 696 with 12 then you get that value which is 58.

What equation in slope intercept form represents the line that passes through the two points?

(2, 5), (7, –1)

Answers

Answer:

y = -3/2 + 8 and/or 3x + 2y = 16

Step-by-step explanation:

(x,y) is helpful to remember

*I believe I'm correct, but I would recommend a quick double-check

What is the value of x?
24
36
12
Select one:
O a. 8
O b. 12
O c. 6
O d.

Answers

Answer:

x = 12

Step-by-step explanation:

What is the value of the expression below? 5+2(10 + 5)​

Answers

U would do 10+5 first then u would do 5+2 so 15+7 =22
The answer is 22. PEMDAS = Parentheses first, so you add 10 + 5 = 15. Then you add 5+2 = 7, = 22.
Or if you’re multiplying it would be 15 x 7

The difference of two number is 3. Their sum is 13. Write and alive a system of equations to help find the numbers

Answers

The numbers are 8 and 5.
8+5=13
8-5=3

what is 234 times 7658

Answers

Answer:

1,791,972

Step-by-step explanation:

234x7658=1,791,972

hope this helps

Please help

Write the equation of a line that is parallel to y=-x + 7 and passes
through the point (-4, 1). Write your answer in slope-intercept form,
y = mx + 6.

Answers

Answer:

y = -x -3

Step-by-step explanation:

I went to Desmos and kept guessing y intercepts until the line passed through the point (-4, 1). Sorry I can't explain the real way to figure this out.

100 points! I will mark brainliest! Only answer if you know it please. Random answer will be reported because I’m looking for the REAL answer:)

Answers

Answer:

2 and -1/2

Step-by-step explanation:

perpendicular lines have slopes that have opposite signs and are reciprocals

Pretty sure that is right (2 & -1/2)

Rewrite the function y = 2(x – 4)^2 – 5 in standard form.

Answers

Answer:

y=2x2−16x+27

Step-by-step explanation:

y = 2x2 + 12x + 13


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Find the values of x and y.

Answers

Answer:

x=30° y=5

Step-by-step explanation:

All sides of the top triangle are equal. And all angles are equal Since it's an equilateral triangle.

so

8y=40

y=40/8

y=5

Since it's an equilateral triangle. All angles are equal And each angle has dimensions

=180°/3=60°

The angle of the straight line = 180°

so The obtuse angle of the lower isosceles triangle is 180°-60°=120°

The angles at the base of the isosceles triangle are equal

so 2x° = 180°-120°

2x°=60°

x°=60°/2

x°=30°

Complete the pairs of corresponding parts if △RST ≅ △TXY.



ST =
TY
XY
TX

Answers

Answer:

As

ST is corresponding to XY

Hence, we conclude that:

ST = XY

Step-by-step explanation:

Given

△RST ≅ △TXY

To determine:

ST = ?

As

△RST ≅ △TXY

So the triangles △RST and △TXY are congruent to each other.

We know that congruent triangles have equal corresponding parts.

Please check the attached graph.

From the graph, it is clear that:

RT is corresponding to TY.ST is corresponding to XY.RS is corresponding to TX.

We need to determine ST

as

ST is corresponding to XY

i.e. ST = XY

Hence, we conclude that:

ST = XY

what expression is equivalent to 2m (32m + 1) + 3 (53 - 2)

Answers

Answer:

64m2+2m+255

Step-by-step explanation:

Find WX
10x + 5

7x + 8

8x-1

Answers

Answer: 127

Step-by-step explanation:

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