2x+y=3.4
8x+2y=11.6
what is the value of x?

question 3 = $150 because 50% is one half of 100% so 300/2 = 150

Answer:

3. 200

4. 9

Step-by-step explanation:

3. 300 divided by 1.5 is 200 which means 200 was the original price

4. 65 times .4 is 26 so 65 plus 26 is 91 and 100-91 is 9 so she had 9 left over

Answer:

c sorry if its wrong

Step-by-step explanation:

Answer:

I know the type of math your doing

Step-by-step explanation:

just download connects its f0r khan academy it will help you on it I have it and it works good

Answer:

x = 4

y = 5

Step-by-step explanation:

4x = x + 12

^(subtract x from both sides)^

3x = 12

^(divide both sides by 3)^

x = 4

3y = 15

(divide both sides by 3)

y = 5

Answer:

True

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

This answer choice is not correct because u can't write a quote as an equation

Hope this helps u ;)

Pls mak brainlist

Answer:

feet

Step-by-step explanation:

The others measure liquid or weight.

Answer:

feet

Step-by-step explanation:

Both inches and feet could be used, but inches are so small that it would take much longer to measure the wall than it should. Feet are the appropriate unit to measure a wall.

Answer:

the first one (:

Step-by-step explanation:

Answer:

12

Step-by-step explanation:

81 - 69 = 12

Answer:

12

Step-by-step explanation:

if you need help with horse stuff let me know!

Answer:

B.p^15/q^9

Step-by-step explanation:

p(p^-7•q^3)^-2•q^-3

answer: B. p^15/q^9

3 is the best representation of the center of given data set.

The correct answer is an option (C).

"It is the average of the given numbers."

"I is the middle value of a sorted list of numbers."

For given question,

We have been given a dot plot

From the given dot plot,

We have data as 0, 0, 0, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 5, 5, 5, 5, 5, 5

the total number of students in the class are n = 21

We write 0, 0, 0, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 5, 5, 5, 5, 5, 5 as  (3 × 0), (1 × 2), (5 × 2), (4 × 3), 4, (6 × 5)

So, the mean of the above data would be,

[tex]\bar{X}=\frac{0+ (1 \times 2)+ (5 \times 2)+(4 \times 3)+4+ (6 \times 5)}{21}\\\\ \bar{X}=\frac{2+10+12+4+30}{21}\\\\ \bar{X}=2.8\\\\\bar{X}\approx 3[/tex]

From above data we can observe that the middle of the data is 3.

0, 0, 0, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 5, 5, 5, 5, 5, 5

So, the median would be,

M = 3

Therefore, 3 is the best representation of the center of given data set.

The correct answer is an option (C).

Learn more about the center of the data here:

brainly.com/question/17090777

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Answer:

(4,0)

Step-by-step explanation:

Let's solve your system by elimination.

5x+2y=20;6x+5y=24

Multiply the first equation by 5,and multiply the second equation by -2.

5(5x+2y=20)

−2(6x+5y=24)

Becomes:

25x+10y=100

−12x − 10y = −48

Add these equations to eliminate y:

13x = 52

Then solve13x=52for x:

13x=52

(Divide both sides by 13)

x=4

Now that we've found x let's plug it back in to solve for y.

Write down an original equation:

5x+2y=20

Substitute 4 for x in 5x + 2y = 20:

(5)(4)+2y=20

2y+20=20 (Simplify both sides of the equation)

2y+20+ −20 = 20 + −20 (Add -20 to both sides)

2y = 0

(Divide both sides by 2)

y=0

Answer:

miles

Step-by-step explanation:

Answer:

I think Its D.

Step-by-step explanation:

Its not A because milliliters measures with graduated cylinder and stuff like that.

It's not B because tons is capacity.

Finally, it's not C because kilograms measures weight as well, so that will leave you with the answer D- Miles.

Have a Nice Day!!!!!!!!!!

Answer:

Where is the question?

Step-by-step explanation:

Answer:

lol XD

True tho

Answer: 32 degrees in F

Step-by-step explanation:

Answer:

2 degrees

Step-by-step explanation:

you woud add the 2 degrees droped to the current degrees and 0+2= 2 so yesterdays tempature was 2 degrees hope i helped!

Answer:

P = 5/12

Step-by-step explanation:

Answer:

hello

Step-by-step explanation:

he has 5 nickels and 11 dimes

Answer:

zwegrhimomom9kihuvy

Step-by-step explanation:

eftvf hnjbjbyvyxrzeWzwzwzwctb

Answer:

The answer is 19672212.8cm

Answer:

2 cm^3

Step-by-step explanation:

You have the Volume- 125.6 cm^3

And the height- 10 cm

So you will just do the equation just a different way.

[tex]V= \pi rx^{2} h[/tex]

125.6 = 3.14·x²·10

Once you solve that you get the radius which is 2

So the answer shall be 2

Answer:

x = 5 (see below)

Step-by-step explanation:

Combine like terms by subtracting on both sides:

25 + 8x = 5 + 12x

20 = 4x

Then divide:

20 = 4x

5 = x

Move the variable to the left side of the equation:

x = 5

Answer:

Courtney is bringing 8 snacks

Step-by-step explanation:

Chelsea's snacks are represented as 2x.

2x means 2 · (a number)

If Chelsea brought 16 snacks and the amount of snacks represented by 2x, we have to figure out what times 2 equals 16.

In order to find out, we have to divide.

16 ÷ 8 = 2

This means 2 · 8 = 16

Since the amount of snacks Courtney brings is represented as "x", she would have brought 8 snacks.

Hope this helped! :)

6.355x10^10

Step-by-step explanation:

Scientific notation is the way of writing a large number between 1 to 10 with a power of 10.

The scientific notation of 63,550,000,000 is  6.355 x [tex]10^{10}[/tex].

It is the way of writing a large number between 1 to 10 with a power of 10.

Example:

2.3 x 10² is a scientific notation of 230

9.1 x 10³ is a scientific notation of 9100

We have,

63,550,000,000

We can write this as,

6355 x [tex]10^{7}[/tex]

We need to make a number between 1 and 10.

So,

Divide and Multiply 1000.

6355/1000 x [tex]10^{7}[/tex] x 1000

6.355 x [tex]10^{10}[/tex]

We see that,

6.355 is a number between 1 and 10 with a power of 10.

Thus,

The scientific notation of 63,550,000,000 is  6.355 x [tex]10^{10}[/tex].

Learn more about scientific notation here:

https://brainly.com/question/18073768

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I’m sorry I can’t help you without a picture if you could add a picture please I can answer this for you ツ message me back when you do!

★ Given question:-

★ Let's solve

[tex]↦ \frac{r}{17} = - 8 \\ ↦r = - 8 \times 17\\ ↦by \: multiplying \: \\ ↦r = - 136[/tex]

[tex] \underline{ \boxed{ \sf{✰\:r=\: -136✓ }}}[/tex]

Multiply the cost of one pencil by the quantity of pencils (p) you buy:

Total = 0.19p

Answer:

y=5

x=-1

Step-by-step explanation:

5x-2y=-15

3x+8y=37

add 2y to both sides

5x=2y-15

divide both sides by 5

x=(2y-15)/5

x=2y/5-3

substitute for x

3(2y/5-3)+8y=37

6y/5-9+8y=37

add 9 to each side

6y/5+8y=46

subtract 8y from both sides

6y/5=46-8y

multiply both sides by 5

6y=5(46-8y)

6y=230-40y

46y=230

y=5

substitute for y

5x-2(5)=-15

5x-10=-15

5x=-5

x=-1

Answer:

Step-by-step explanation:

Using the Law of Sines

sin30/a=sin45/8

a=8sin30/sin45

a=8(1/2)^(1/2)

a=(64/2)^(1/2)

a=(32)^(1/2)

a=4(2)^(1/2)

so the first answer is correct

Answer:

Step-by-step explanation:

its b

Answer:

Step-by-step explanation:

No real solutions exist. Subtract 8 on both sides to get:

[tex]x^2=-20[/tex]

You cannot take the square root of a negative number without involving imaginary numbers.

Answer and Explanation

__________________________________________________________

__________________________________________________________

The answer is -10 because...

You need to multiply 2 by "x," and to find out what "x" is, we need to add...

[tex]2+-12[/tex]

__________________________________________________________

And if we add  [tex]2[/tex] by [tex]-12[/tex], we get [tex]-10[/tex], which is our answer.

__________________________________________________________

and now, if we add [tex]-20[/tex] by  [tex]8[/tex], we get [tex]-12[/tex], which is what the equation equals, and this is how we know it is correct.

__________________________________________________________

Hope this helps! :)

Answer:

The answer is 0.385

Step-by-step explanation:

because i use the butterfly method if that's helps