Mathematics High School

In 4-6, solve each system of equations by using elimination. 4. y - X= 28 y + x = 156​

Answers

Answer 1

Answer: x=−27y−X

Step-by-step explanation:

Related Questions

Abby will receive a cash prize when she earns 300 bonus points at the video shop. Abby receives 5 bonus points every time she rents a recent release video at the video store, plus a 60-point bonus for becoming a member. The total number of bonus points, B is given by B = 5n + 60, where n is the number of videos being rented. How many videos must Abby rent to receive her cash prize?
A.240
B.120
C.60
D.48

Answers

it’s D)48.
plugged into the given equation it looks like 5(48)+60
needs to equal 300 and it works.

what is 1+12x-40 evaluated

Answers

Answer:

12x-39

Step-by-step explanation:

40-1=39

What is another word for zeros?
1. roots
2. axis of symmetry
3.vertex
4. y-intercept

Answers

Answer:

I think it's vertex bestie not sure tho lmk if it's wrong

Find the values of x and y. y=? x=? PLEASE HELP

Answers

Answer:

x=15.714

y=5.715

Step-by-step explanation:

Answer:

x=10, y=20

Step-by-step explanation:

okay so to find x, or the way I did it, we just have to look at the top, we know one line is 180 degrees, and we see three angles, 7x,90, and 20

so 90+20+7x=180

and:110+7x=180

therefore: 7x=70

and finally: x=10

To find y also isn't had if we just look at the blue and green lines we see they are intersecting and opposite angles in intersecting lines are congruent meaning they are the same. So we now know that:

5x+2y=90

and we know x=10

so 5x=50

meaning that: 50+2y=90

therefore: 2y=40

and in conclusion y=20

WILL GIVE BRAINLIEST

Which expression correctly represents "nine less than the quotient of a number and four, increased by three”?

A. N/4 - 9 + 3
B. 4/N - 9 + 3
C. 9 - n/4 + 3
D. 9 - 4/n + 3

Answers

Answer:

c

a fraction bar Is just a division bar, it's c.

Given x=2 and y=4, then x*2 y is

Answers

Answer:

16 I guess

Step-by-step explanation:

2*2 is 4

Then 4 times 4 is 16.

i’m pretty sure it is 16

Holly has 46 quart of potato salad. She gives 26 quart to a friend. How much potato salad does she have left? Explain.

Answers

Answer:

Holly has 20 quart of potato salad left.

Step-by-step explanation:

Holly has 20 quart of potato salad because she originally has 46 quart of potato but gave her friend 26, subtracting 26 from the original amount of quart of potato she had.

Given that a = 18 cm and b = 23 cm, work out the area of the triangle.
Give your answer rounded to 1 DP.

Answers

207 cm^2

Im assuming this is a right triangle.

In that case, the formula is A=1/2bh

So 1/2(18)(23)= 207 :D

Please help!
Calcule the mean for the following data set:

Answers

Answer:

the answer should be 7

Step-by-step explanation:

I think you forgot a file? How did that person answer it! I don’t see a file

SOLVE PLS HURRY PLS INCLUDE STEPS 4a + 1 - a = 19

Answers

Answer:

a=6

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

4a+1−a=19

(4a+−a)+(1)=19 (Combine Like Terms)

3a+1=19

Step 2: Subtract 1 from both sides.

3a+1−1=19−1

3a=18

a=18/3

a=6

--

Please help ASAP Gavin works as a salesperson at an electronics store and sells phones and phone accessories. Gavin earns a $12 commission for every phone he sells and a $3.50 commission for every accessory he sells. On a given day, Gavin made a total of $135 in commission and sold 12 more accessories than phones. Determine the number of phones sold and the number of accessories sold.

There were
____phones sold and
____ accessories sold.

Answers

Answer:

6 phones and 18 accessories

Step-by-step explanation:

12P + 3.50A = 135

A = 12 + P

12P + 3.50(12 + P) = 135,

12P + 42 +3.50P = 135

15.50P = 93

P = 6 phones

A = 12 + 6 = 18 accessories

Can someone plz help me ?

Answers

Answer:

2

Step-by-step explanation:

not needed

Answer:

-5 or -5/1 (but -5 divided by 1 is -5).

Step-by-step explanation:

You go down 5 and over 1. The fact that it is going down indicates it to be negative.

Match the type of rock with how it forms.
HELP ASAP PLEASE!!!

Answers

Answer:

Step-by-step explanation:

Igneous

Sedimentary

Metamorphic

Hope that helps!

The price of an item increased from 20 to 30. The percentage of increase is pls help me I have exam after a week pls I hope you will help if you did I will foolw and like who did​

Answers

Answer: 50% increase

Step-by-step explanation:

Think of 20 as 100%

Half of 20 is 10 which is 50% in this scenario.

30-20=10

This means that the price of the item increased by 50% or 10.

28. Construct a rectangle ABCD in which AB = 4 cm, BC = 3.5 cm. Construct a triangle whose area is equal to that of rectangle ABCD

Answers

Answer:

Triangle b = 4, h = 7

Step-by-step explanation:

Rectangle area = L*W

Triangle area = (B*H)/2

Rectangle/2 = Triangle

If you want triangle to = rectangle, then rectangle*2/2

Rectangle = 4*3.5 = 14

Triangle = 4*7 = 28/2 = 14

At the store Rebecca some $14.52 on 12 rolls of paper towels at what unit rate did Rebecca spend money on paper towels

Answers

Answer:

Unit rate = 1.21

Step-by-step explanation:

1. Divide 14.52/12 to get the unit rate which is 1.21.

That's it. Rebecca spent 1.21 dollars per paper towel.

A mountain trail will cover 4,855 feet vertically over a horizontal distance of 17,625 feet.
What is the trails angle of inclination?

Answers

Hbbnbnnnbbbbbbbbbghnmmjgvbmjuj,

Is this correct will give Brain

Answers

Answer:

it d

Step-by-step explanation:

ply
1:
Kristina receives £5 from her Grandmother.
She gives £1 to her sister.
What percentage of the £5 did she give to her sister?

Answers

Answer:

Step-by-step explanation:

1/5 = 0.2 = 20%

Im giving 30 points pls help

Answers

Step-by-step explanation:

Pathagory and Theorem

a^2+b^2=c^2

(x-3)^2+(x-4)^2=6^2

expand:

2x^2-14x+25=36

2x^2-14x-11=0

x=(\sqrt{71}+7)/2

perimeter=(x-3)+(x-4)+6=2x-1

insert the value for x into 2x-1

[tex]\sqrt{71}[/tex]+6=perimeter

Hope that helps :)

9514 1404 393

Answer:

  2x -1

Step-by-step explanation:

The perimeter is the sum of the side lengths.

  P = 6 + (x -4) + (x -3)

  P = 2x -1 . . . . . . collect terms

The perimeter is 2x -1.

_____

Additional comment

There is nothing in the problem statement that suggests this is a right triangle. Without knowing at least one angle, we cannot solve for a numerical value for the perimeter. The problem title suggests we're to leave the result in polynomial form.

Hiiiiii help me pass please

Answers

Answer:

it's d

Step-by-step explanation:

opposite over hypotenuse is sin

adjacent over hypotenuse is cos

opposite over adjacent is tan

The answer is D. Good luck

A system of equations is shown below.

y = x2 + 6x - 8

y = 4x + 7

What is the sum of the y value(s) of the solution set?
-----------------------------------------------------------------------------------
Group of answer choices

-2

32

6

no solution

Answers

Answer:

Step-by-step explanation:

x² + 6x - 8 = 4x + 7

x² + 2x - 15 = 0

(x+5)(x-3) = 0

x = -5, 3

y = 4x + 7 = -13, 19

-13 + 19 = 6

PLEASE PLEASE PLEASEEEEE HELP ME PLEASEEE!!!

Answers

Answer:

V = 0.523598776

Step-by-step explanation:

Write two numbers that multiply to the value on top and add to the value on bottom. 45x __+14

Answers

Answer:

9 and 5

Step-by-step explanation:

..................

Person on top is right

If a driver drives at a constant rate of 32 miles per hour, how long would it take the driver to drive 208 miles ?

Answers

Answer:

6.5 hours

Step-by-step explanation:

208/32 = 6.5

6.5 hr

1h➡️32mile

?➡️ 208 mile

[tex] \frac{1 \times 208}{32} = 6.5[/tex]

Of the shapes shown, 1/3 are circles and 1 1/2 are rectangles. What fraction of the shapes are either circles or rectangles?

Answers

Answer: 1 5/6

Step-by-step explanation:

From the question given, we are told that out of some shapes shown, 1/3 of the shapes are circles and 1 1/2 are rectangles.

The fraction of the shapes that are either circles or rectangles, will be gotten by adding the shapes that are circle to those that are rectangle. This will be:

= 1/3 + 1 1/2

We should make the fraction have a common denominator.

= 2/6 + 1 3/6

= 1 5/6

The answer is 1 5/6.

Carter, Michelle, and Jen work at a coffee shop. All three of them worked 6 hours on Monday. Michelle and Jen worked 7 hours on Tuesday. On Wednesday, Carter worked 5 hours. On Thursday, Carter and Michelle worked 4 hours, and Jen worked 8 hours. Use a matrix to organize the number of hours all three employees worked Monday through Thursday.

please help, i will give brainliest!! <3

Answers

Sorry i dont know what a matrix is but the answer to all 3 of the workers time is, 66

24 pennies to 60 pennies

Answers

Answer:

24 x 2.5 = 60...

Step-by-step explanation:

sorry if this is wrong...

have a good day

Which equation is equivalent to 35 = 1725 ÷ h?

Answers

Answer:

345/7

Step-by-step explanation:

h=345/7 tell me if its right

Challenger Elementary School has 800 students. Every Wednesday,%12, percent of the students stay after school for Chess Club.

Answers

Answer: 96 students

Step-by-step explanation:

Question wants to know the number of students attending chess on Wednesday.

The university has 800 students and 12% of these students stay for Chess.

The number of students staying for chess is:

= Percentage staying * total number of students

= 12% * 800

= 96 students

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