Mathematics High School

PLEASE SOMEONE HELP
solve the equations using substitution method and SHOW YOUR WORK
A. y = 2x + 1
5x + y = 15

B. y = x + 7
4x + 3y = -7

C. y = 1
6x - 8y = 28

D. 2x - 3y = 16
4x + y = 4

PLEASE SOMEONE HELPsolve The Equations Using Substitution Method And SHOW YOUR WORK A. Y = 2x + 1 5x

Answers

Answer 1
Infinity Many Solutions


- Harvard university professor

Related Questions

Helppppnrejeisjcjjrwhajsjfhghfjebbdbfbgbfbfbdfbfbf lol sorry help if you want

Answers

Answer:

8 tablespoons of sugar

Answer:

8 teaspoons

Step-by-step explanation:

Which expression is not equal.​

Answers

Answer:

The answer is 2187.

The first equation "IS NOT" equivalent to the equation.

because every other equation has the same value except for the first equation.

FIND THE VALUE OF THE VARIABLE AND FILL THE BFIND THE VALUE OF THE VARIABLE AND FILL THE BLANK.

1) A+17=45
2) B-28=39
3) 6C+14=74
4) 4(D-7)=52
5) 6(E+6)=72

Answers

Answer:

a = 28

b = 11

c = 10

d = 20

e=6

Step-by-step explanation:

Pls help due ASAP
Show workings

Answers

Answer:

(3,2)

Step-by-step explanation:

So like the last one we just have to find the distances between x on point a and x on point x and the distances between y on point a and y on point b. 4+2=6 and 3+3=6 and since we are trying to find the point that is 1/6 of the distance from a we do 6/6 and 6/6 which is 1 and 1. Then we subtract 1 from the x and y values of A. So the coordinates 1/6 of the way is (3,2)

-75= 50 + x what is the value of x?

Answers

Answer:

x=-125

Step-by-step explanation:

-75=50+x

-50  -50

-125=x

Answer: x= -125

Step-by-step explanation:

Help me please i will give brainlyest

r + 16 = 57

Answers

Answer:

41

Step-by-step explanation:

PLEASE HELP ME ASAP :(
Solve for a.
= ✓ [?]
a
Enter the number that goes
beneath the radical symbol.
Enter

Answers

Answer that goes in the box = 28

===================================================

Explanation:

We have a white triangle shown as the empty space between the green squares.

This right triangle has the following sides:

a = unknown horizontal legb = 6 = vertical legc = 8 = hypotenuse

Use the Pythagorean Theorem to solve for 'a'

a^2 + b^2 = c^2

a^2 + 6^2 = 8^2

a^2 + 36 = 64

a^2 = 64 - 36 ..... subtract 36 from both sides

a^2 = 28

a = sqrt(28) .... apply the square root to both sides

Optionally we can simplify like so

a = sqrt(28)

a = sqrt(4*7)

a = sqrt(4)*sqrt(7)

a = 2*sqrt(7)

But this would not fit the answer format your teacher has provided. So we'll stick to sqrt(28) as the final answer.

i need help with this

Answers

Answer:

4s[tex]{3}[/tex]

Step-by-step explanation:

4 cubes, Formula for cube is s^3

What is the equation of the line that passes through the points (-2,3) and (1,9)?

Answers

the answer is y= -3x - 3

hope that helps!

Answer:

Solution given:

(x1,y1)=(-2,3)

(x2,y2)=(1,9)

we have

equation of line

(y-y1)=[tex] \frac{y2-y1}{x2-x1} [/tex](x-x1)

(y-3)=[tex] \frac{9-3}{1+2} [/tex](x+2)

y-3=2x+4

2x-y+4+3=0

2x-y+7=0;is a required equation.

a student has some $1 and $5 bills in his wallet he has a total of 12 bills that are worth $32 how many of each bill does he have​

Answers

Five $5 bills, and seven $1 bills :)

Aubrey coach asked her to bring 5 liter of water to practice. How many 500-milliliter bottles does aubrey needs to buy to have exactly enough water?

Answers

Answer:

10 water bottles

Step-by-step explanation:

We know that there are a total of 1000 milliliters in a 1 liter. So we first need to multiply 1000 milliliters by 5 in order to calculate how much is in 5 liters which is what the coach is asking for...

1000 * 5 = 5000 milliliters

Since each water bottle only holds 500 milliliters we need to divide this amount by the total that the coach needs in milliliters.

5000 / 500 = 10

Finally, we can see that Audrey needs to buy a total of 10 water bottles to have exactly enough water.

What number is missing in the pattern?
324 108 ___ 12 4

Answers

Answer:

36 is missing.

Step-by-step explanation:

multiply 4 by 3, you get 12

12 by 3 you get 36

36 by 3 you get 108 and then 108 by 3 is 324

The cost of items at store A is approximately Normally distributed with a mean of $4.15 and a standard deviation of $2.68. The cost of items at store B is approximately Normally distributed with a mean of $5.35 and a standard deviation of $1.75. Assume that A (the cost of a randomly selected item from store A) and B (the cost of a randomly selected item from store B) are independent random variables. Let D = A-B. Which of the following correctly interprets the mean of D?
o $1.20. One randomly chosen item will cost $1.20 less at store A than at store B.

0 -$1.20. On average, a person can expect to spend $1.20 less at store A than at store B for many randomly chosen items.

O $1.20. One randomly chosen item will cost $1.20 more at store A than at store B.

O $1.20. On average, a person can expect to spend $1.20 more at store A than at store B for many randomly chosen items.

O $9.50. On average, a person can expect to spend a total of $9.50 at stores A and B. ​

Answers

Answer:

Step-by-step explanation:

Its b I used chegg

dasdasdasdasdasdasdasd

Please help. Are they parallel?

Answers

Answer:

yes

Step-by-step explanation:

Evaluate the follow expression. Use x = -2, y = 6
5х – Зу
Show Your Work

Answers

Answer:

5x - 3y = -28

Step-by-step explanation:

5x-3y

5(-2) - 3(6)

-10 - 18 = -28

Answer:

-28

Step-by-step explanation:

5 x (-2) - 3 x (6)

-10 - 18

-28

The measure of the vertex angle of an isosceles triangle is 64 what is the measure of each base angle

Answers

Answer:

58

Step-by-step explanation:

For every triangle, all angles add up to 180. So you have to subtract 64 from 180 which gives you 116. You then take that number and divide it by two because there are two base angles, which gives you 58. The answer is 58.

It would be great if I got some help with this thank you:)

Answers

Answer:

A or c hopes this helps!!

same i also got the same test

find the value of c to the nearest tenth

Answers

the answer is 10,000 when to the nearest tenth

The width of a rectangular piece of paper is 8.5 inches, and the diagonal length of the piece of paper is 14 inches. What is the length of this piece of paper in inches?

Answers

the answer is 11.1 hopefully this helps

can anyone help me on this

Answers

Answer:its 36

Step-by-step explanation:

Answer:

32+1.8

1.8*10=18

so the answer would be 50.

Step-by-step explanation:

To measure the distance, a an Engineer locates points A, B, C, D, and E as shown. What is the length of DB to the nearest meter?​

Answers

I believe the answer should be DB = 10.
To find the missing side, you have to cross multiple the values on each side, and each value should be equal to each other.

9) Fred is buying roses. The roses cost $1.68 each. How many roses did Fred buy if the bouquet cost
$25.20 in all?

Answers

Answer:

15

Step-by-step explanation:

1.68 divided 25.20 = 15

Find the discount of a jacket priced at $50 with 30% off.

Answers

Answer:

15.00% savings

Step-by-step explanation:

50 - more than half % off 50

Ok so I have 72 and 70 I have to round the number to the nearest ten can anyone help me.

Answers

Yes I think I can help you!

Answer:

The nearest 10 would be 70!

Step-by-step explanation:

Both of these numbers are below 75, so you have to round down to 70.

I hope this helps, and have a great day!

A graph titled velocity versus time has horizontal axis time (seconds) and vertical axis velocity (meters per second). A line has 4 straight segments. Line segment A runs from 0 seconds 0 meters per second to 1 seconds 15 meters per second. Then segment B runs to 2 seconds 20 meters per second. Then segment C runs to 4 seconds 20 meters per second. Then segment D runs to 5 seconds 0 meters per second.
The acceleration of segment D is
m/s2.



Rank segments A, B, and C from least acceleration to greatest acceleration.

Least:







Greatest:

Answers

Answer:

the anwser is C

Step-by-step explanation:

i just got it right like 5 seconds ago

Answer:

its A C E

Step-by-step explanation:

Find the slope given the following ordered pairs

(6, 20), (5, -18)

Answers

Slope is 38

explanation:

(6,20),(5,-18)

-18 - 20 = -38

5 - 6= -1

simplify

38/1 = 38

N - 8, when n = -8
please do this asap

Answers

Answer:

-8-8 is equal to  -16

William bought a piece of wood that is 3 feet long. He cuts it into two pieces. One piece is 14 inches long. How long is the other​ piece?

Answers

Answer:

The other board is 22 inches

Step-by-step explanation:

3 ft is 36 inches and 36 - 14 = 22 inches

Answer:

22 inches

Step-by-step explanation:

One foot is equal to 12 inches. Therefore, 3 feet equals 36 inches.

3 x 12 = 36

William cut the board into two separate pieces. Since one of the pieces is 14 inches, you will need to subtract 14 from the beginning amount (36 inches) to find the length of the other piece.

36 - 14 = 22 inches

I need help with this

Answers

Answer:

its 1.6

Step-by-step explanation:

Answer:

1.6

Step-by-step explanation:

Divide like normal, the negative signs cancel out on division and multiplication

HELP QUICK! On a coordinate plane, the coordinates of vertices R and T for a polygon are R(−6, 2) and T(1, 2). What is the length of Side RT of the polygon?

4 units
7 units
8 units
15 units

Answers

they are both on the 2 of the y-axis, so now all you have to do is subrtact the x-axis coordinate of R by the x-axis coordinate of T. That would be (-6)-5 = -11. YOUR ANSWER IS NOT -11. Signs don't matter when your attempting to find distance. Just forget the negative sign(-). It has nothing to do with the answer.
YOUR ANSWER IS 11 UNITS!!!
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