Mathematics High School

PLEASE HELP!!! GIVING BRAINLIST

If x + 2y = 8 and x/2 -y= 10, then x = ?
A)-3
B) 0
C) 10
D) 14

Answers

Answer 1

Answer:

D. 14

make y the subject of the formula in equation 1 and then substitute it in equation 2

Related Questions

Please help
Will give brainliest!!!

Answers

step 1: set equations equal to eachother
2x+2=x-1
which equals to x=-3
so the answer is one.

Answer:

There is one solution.

Step-by-step explanation:

y=2x+2

y=x-1

So 2x+2 = x-1

x = -3

So y = -4

Which of the following equations is y = x2 – 5x – 14 in factored form?
Oy= (2-7)(2+2)
Oy= (x + 7) (x - 2)
Oy= (x - 5)(x – 14).
Oy= (x + 5) (x + 14)
Need help ASAP PLS

Answers

Answer:

Y = (x - 7) (x + 2)

Step-by-step explanation:

MARY is making pillows for her new office. She bought 2 1/2 yards of fabric. Her
total cost was $17. What was the cost per yard?

HELP ME PLZ

Answers

17 / 2.5 = 6.80 a yard

Selection all equations that are true given the diagram below.

Answers

Answer:

Opition A I just did it

Step-by-step explanation:

I LIKE YA CUT G

A kid traveled a distance of 9 km by bike, and then walked a distance of km.
a.Find the total distance traveled in terms of
b. If the total distance was less than 30 km, form an inequality in , and
then solve it!

Answers

Answer:

Step-by-step explanation:

The question is incomplete. Here is the complete question;

A kid traveled a distance of 9 km by bike, and then walked a distance of x km.

a.Find the total distance traveled in terms of  x

b. If the total distance was less than 30 km, form an inequality in x, and

then solve it!

a) Total distance = distance travelled by bike + distance walked

Total distance = 9km + xkm

Total distance = (9+x)km

b)  If the total distance was less than 30 km, the inequality representing this is;

9+x < 30

Subtract 9 from both sides;

9+x-9 < 30-9

x < 21

hence the solution to the inequality is x< 21

If a polynomial function f(x) has roots –8, 1, and 6i, what must also be a root of f(x)? –6 –6i 6 – i 6

Answers

Answer: -6i

Step-by-step explanation:

please help this is due at 12:20

Answers

Answer:

B

Step-by-step explanation:

The answer is b hopefully you’ve completed it before 12:20

Help me please for gods sake :(

Answers

Answer:

Step-by-step explanation:

15:60

your ratio would be a 1:4

15  18  21  27

60  72  84  108

Answer:1560

Step-by-step explanation: i just copied the other guy

The figure below shows two pair of congruent triangles. ΔFDE≅ _____. ΔYXW ΔXYW ΔWYX ΔWXY

Answers

Answer:

WYX

Step-by-step explanation:

Answer:

wxy

Step-by-step explanation:bc it is

8/34=?
can you show the work pls and thank you

Answers

The answer is 4/17 the work is below

Jonathan wants to investigate the effect that friction has on the amount of force needed to pull an object over surfaces with different textures.
For his test, he gathers the following materials:
• A 1-kilogram wooden board
• A1-meter length of string
A spring scale
• 1 sheet each of felt, construction paper, coarse sandpaper, and wax paper
• 1 roll of masking tape
Jonathan ties one end of the string around the board and the other end to the hook of the spring scale. He tapes the felt, construction paper,
sandpaper, and wax paper side by side on a tabletop. Then he slowly pulls the board across each of the four different surfaces, one surface at
a time. He records the amount of force it takes to move the board over each surface. Which surface would require the least force to move the
board?
O A. Coarse sandpaper
O B. Construction paper
OC. Felt
O D. Wax paper

Answers

Answer:

sand paer

Step-by-step explanation:

dd,,dd,

ddmdmdmdmmddmmdddmdmmdmdmd

Is triangle mno similar to triangle pqo explain

Answers

Answer:

need more information or a picture please

Step-by-step explanation:

what would be the measure of angle A?
A. 70 degrees
B. 79 degrees
C. 55 degrees
D. 44 degrees

Answers

Answer:

D because that is the smallest angle on there baby doll

Step-by-step explanation:

have a nice day sugar bear

Answer:

D

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 3 angles and equate to 180

4x + 8x - 9 + 57 = 180, that is

12x + 48 = 180 ( subtract 48 from both sides )

12x = 132 ( divide both sides by 12 )

x = 11

Thus

∠ A = 4x = 4 × 11 = 44° → D

Help pleasseeeeeeeeeeeeeeeeeeer

Answers

Answer:

4

Step-by-step explanation:

8/12 simplifies to 4/6. so x needs to be 4 for it to work

Does the system have a no solution or infinitely many solutions
Y=2/3x+2-2x+3y=6

Answers

Answer:

answer for y=2/3x+2: y=2/3x+2

answer for -2x+3y=6: x=3/2y-3

pls give brainliest

Answer:

There are infinitely many solutions.

Step-by-step explanation:

There are infinitely many solutions because if you solve the equations, you will find that both of the equations are actually the same, so there is infinitely many solutions.

Showing that both equations are equal:  y=2/3x+2       -2x+3y=6

y=2/3x+2  Multiply by 3 on both sides

3y=2x+6 Rearrange (-2x on both sides)

3y-2x=6 More rearrangement

-2x+3y=6 Now, if you look back at the second equation, you will see that they are both the same.

                     

Please answer quickly

Which of the following could be the number shown on the number line?

Answers

Answer:

A

Step-by-step explanation:

6 is the square root of 36 since it is to the left of it it should be less than 36. That leaves 35 and 30. 35 is closer to 6 as it is almost there so the answer is[tex]\sqrt35[/tex]

I think it is B.35 but I’m not entirely sure.

PLEASE HELP ME ON NUMBER 5

Answers

Answer:

Hebrew National since the cost is only 0.73

Step-by-step explanation:

First we need to identify the cost of each hotdog for each brand. I'll go by in order.

Ball Park:

We know that it cost $6.95 and it's 8 dogs for each one. Meaning all we have to do is divide the price by the amount of hot dogs.

"Price/Hotdogs per package"

In order

6.95/8=0.86875 or 0.87

8.20/10=0.82

7.35/8=0.91875 or 0.92

17.50/24=0.7291666 or 0.73

Since we're dealing with currency we would most likely round it by the nearest hundredth so the true answer would be $0.87.

Use this formula that I made for this question for any other questions.

25 POITNS Suppose a six-sided die has one side numbered with a 9, two sides numbered with a 10, two sides numbered with an 8, and one side numbered with an 11.

What is the expected value of a die roll on this die?

Enter your answer as a number, rounded to two decimal places if necessary, like this: 42.53

Answers

Answer:

9.33

Step-by-step explanation:

hope that helps!

Change each fraction or mixed number to a percent.
a.2/5
b.7/20
C. 1 11/16
d. 14 1/4

Answers

Answer:

a=40%, b=35%, c=168.75, d=1425

Step-by-step explanation:

a : 2/5=4/10*100=40

b:7/20=35/100*100=35

c: 1 11/16=1.6875*100=168.75

d: 14 1/4=14.25*100=1425

Ethan had his two friends over for pizza. Ethan ate 1/4 of the pizza. One of his friends ate 3/8 of the pizza and the other friend ate 1/8 of the pizza. How much of the pizza is left?​

Answers

Answer:

2/8 or 1/4

Step-by-step explanation:

this is because 2/8+3/8+1/8= 0.75

0.75=3/4

1-3/4=1/4

The amount of pizza left Ethan had his two friends will be 1/4.

What is Algebra?

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

Ethan had his two friends over for pizza. Ethan ate 1/4 of the pizza. One of his friends ate 3/8 of the pizza and the other friend ate 1/8 of the pizza.

Then the amount of pizza left is given as,

⇒ 1 - 1/4 - 3/8 - 1/8

⇒ 8/8 - 2/8 - 3/8 - 1/8

⇒ (8 - 2 - 3 - 1) / 8

⇒ (8 - 6) / 8

⇒ 2/8

⇒ 1/4

The amount of pizza left Ethan had his two friends will be 1/4.

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ2

x + 15y = 45 / x + 10y = 30 solve for x and y

Answers

Answer:

25y = 45/1x = 30

Answer:

x=10; y=2

10+15(2)=40

10+10(2)=30

so this is correct

Step-by-step explanation:

Is 0z=2 no solution?

Answers

Answer:

No

Step-by-step explanation:

Please help for brainlest.

Answers

Answer:

3

Step-by-step explanation:

Answer: x=3

Step-by-step explanation:

I just know -.-

I NEED HELP NOW ITS WORTH 100 POINTS ITS A STUPID QUESTION BUT I NEED TO UNDERSTAND THIS ASAPP MY TEACHER ISNT HELPING AT ALL

Answers

Answer:

7 and 5

Step-by-step explanation:

Answer:

I think it means to take the measurements  of the bigger trash bin and turn it into the scale of 0.75

What is -3+7 please help

Answers

Answer:

It is 4.

Thank you and please rate me as brainliest as it will help me to level up

Please help!! I really need it.

Answers

It’s a I think but I’m not sure

At a basketball game, 3 out of every 10 people who enter the gym will be wearing hats. If 250 people attend the game, about how many of them will probably be wearing hats?

75 people

80 people

65 people

70 people

Answers

Its 75 honestly how i did it was just 25x10 then 3x25 which is 75

0.2 - 4/10 - 1.625 =
Enter the answer as an exact decimal or simplified fraction.

Answers

Answer:

-33/40

Step-by-step explanation:

Answer:

-1.825 or in fraction form -73/40 or -1 33/40

Determine the correct scientific notation form of the number. 627,000,000

Answers

Answer:

6.27 x 10 ^ 8

Step-by-step explanation:

ASAP- What does it mean to add less than nothing to something

Answers

Answer:

A negative integer and makes stuff subtract

Step-by-step explanation:

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