7X-2=19
7x=19+2
7x=21
X=3
How do I verify this answer?

Answers

Answer 1

Answer:

to verify this answer you need to substitute the answer you got for x

Step-by-step explanation:

7(3)-2=19

21-2=19

19=19

this means that you are correct


Related Questions

In how many ways can one write the numbers 1, 2, 3, 4, 5, and 6 in a row so that given any number in the row, all of its divisors (not including itself) appear to its left

Answers

Answer:  25 ways.

Step-by-step explanation:

first we have  1,2,6. this can appear once.

4, can appear in twice.

3 can appear in-between 2 and 6, this means 3 can appear 3times before 6.5 would appear 5 times.after 6 3 can appear 2 more times.

[tex]= (3+2) * 5\\= 5*5\\= 25ways[/tex]

by not including itself, an appearing on the left side. one number can be written 25ways

How to find how long it will take a rocket to reach a maximum height

Answers

Answer:

the rocket will reach its maximum height after 4 seconds.  

Step-by-step explanation:

The first term ( -4.9(t-4)^2 ) can never be positive, so the maximum height of 80 meters is achieved when t = 4.  

How does the sketch of a graph of function help describe its behavior

Answers

Answer:

The end behavior of a function f describes the behavior of the graph of the function at the "ends" of the x-axis. In other words, the end behavior of a function describes the trend of the graph if we look to the right end of the x-axis (as x approaches +∞ ) and to the left end of the x-axis (as x approaches −∞ ).

The total cost for a dinner reception, , is a function of the number of people, , attending the event. The equation, , can be used to represent this situation. The catering company requires a minimum of 20 guests. Which inequalities represent the domain & range of this problem?

Answers

Answer:

1,800= 45 x ( x is the amount of weeks)

Step-by-step explanation:

A factory makes rectangular sheets of cardboard, each with an area of 2 1 2square feet. Each sheet of cardboard can be cut into smaller pieces of cardboard measuring 1 6square feet. How many smaller pieces of cardboard does each sheet of cardboard provide?

Answers

Answer:

2 1/7 pieces

Step-by-step explanation:

A factory makes rectangular sheets of cardboard, each with an area 2 1/2 square feet. Each sheet of cardboard can be cut into smaller pieces of cardboard measuring 1 1/6 square feet. How many smaller pieces of cardboard does each sheet of cardboard provide?

Each sheet of cardboard = 2 1/2 square feet

Each smaller pieces of cardboard = 1 1/6 square feet

Number of smaller pieces of cardboard per sheet of cardboard = Each sheet of cardboard ÷

Each smaller pieces of cardboard

= 2 1/2 square feet ÷ 1 1/6 square feet

= 5/2 ÷ 7/6

= 5/2 × 6/7

= (5*6) / (2*7)

= 30/14

= 15/7

= 2 1/7 pieces

Number of smaller pieces of cardboard per sheet of cardboard = 2 1/7 pieces


plz help it’s a or b

Answers

Answer:A

Step-by-step explanation:

Answer: The think answer would have to be B because it has a rate of change of 2/3 or 8/12 and a has a rate of change of 4/12

Step-by-step explanation:

In the diagram below
Please help I’ll give brainliest

Answers

disclaimer: i haven’t taken geometry for like a year so i’m not 100% sure if i’m right, however i’m doing something a bit similar in pre calc

Henry's potato vine is growing like crazy! When he planted it, it was 2 inches long. Two weeks later it was 5 inches long. At 6 weeks, it was 11 inches long.

Answers

Answer:

[tex]y = \frac{3}{2}x +2[/tex]

Step-by-step explanation:

Required:

Write an equation to represent this  situation

Let x represents the number of weeks and y represents the growth.

When he planted it:

[tex](x_1,y_1) = (0,2)[/tex]

Two weeks later:

[tex](x_2,y_2) = (2,5)[/tex]

At 6 weeks:

[tex](x_3,y_3) = (6,11)[/tex]

Start by calculating the slope (m)

[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]

[tex]m = \frac{5-2}{2-0}[/tex]

[tex]m = \frac{3}{2}[/tex]

Then calculate the equation using:

[tex]y - y_3 = m(x - x_3)[/tex]

[tex]y - 11 = \frac{3}{2}(x - 6)[/tex]

[tex]y - 11 = \frac{3}{2}x - 9[/tex]

Solve for y

[tex]y = \frac{3}{2}x - 9+11[/tex]

[tex]y = \frac{3}{2}x +2[/tex]

Simone has a collection of coins consisting of 1 quarter, 1 nickel and 1 penny. Using at least two coins from the collection, how many different sums of money are possible

Answers

Answer:

4 different sums

Step-by-step explanation:

There are two ways to form a sum: either by leaving out one coin or by not leaving out any. There are three options if we want to leave out one coin, and obviously only one way to not leave out any, so that gives us our answer of [tex]$3+1=\boxed{4}$[/tex] .

Hope this helped! :)

The difference sum of money that should be possible is 4.

The following information should be considered:

There are two ways to form a sum i.e. either by leaving out one coin or by not leaving out any. There are three options if we want to leave out one coin, and obviously only one way to not leave out any, so that gives us i.e.

= 3 + 1

= 4

Learn more: brainly.com/question/16911495

Anyone please help me to do 4 ) f

Answers

i think your missing one which is G

Find the measure of side JK

Answers

Answer:

In ΔIJK, the measure of ∠K=90°, JK = 90 feet, and KI = 54 feet. Find the measure of ∠I to the nearest tenth of a degree.

Step-by-step explanation:

what is the answer what is q

Answers

q is negative two thirds which is written as -2/3

Answer:

q= - [tex]\frac{2}{3}[/tex]

Step-by-step explanation:

Simplify from 3 (q+4/3) = 2 to 3q+3(4/3)=2

Cancel the common factor 3

3q+4=2

3q=2-4

3q=-2

q=-2/3

Evaluate this expression when x is -250

-2x+400

Answers

Answer:

900

Step-by-step explanation:

-2(-250)+400

or, 500+400

=900

Please mark me as brainliest

you can now mark them as brainliest

Find the quotient from the question above and explain what it means in each case.

Answers

I can’t give you the answer lol if I can’t see that picture I need to see the picture and I will help

Answer:

no

Step-by-step explanation:

Yesterday, the temperature at noon was 22.5 degrees. By midnight, the temperature had decreased by 27.7 degrees. What was the temperature at midnight?

Answers

Answer:

54.23

Step-by-step explanation:

If that not a choice simpfly

2 – Efetue:

a) (+7) . (- 5) b) (-9) . (- 8) c)(-15) : (+5) d) (+125) : (+25)

preciso disso pra agora

Answers

A) [tex]7x(-5)[/tex]

A multiplicação de um numero positivo por um numero negativo resulta em um numero negativo: [tex](+) x (-)=(-)[/tex]

[tex](7x5)[/tex]

Multiplique os valores

[tex]-35[/tex]

resposta para  A: [tex]-35[/tex]

B)[tex](-9)x(-8)[/tex]

A multiplicação dois números negativos resulta em um numero positivo : [tex](-)x(-)=(+)[/tex]

[tex]9 x 8[/tex]

Multiplique os valores

[tex]72[/tex]

Resposta para B :[tex]72[/tex]

C)[tex](-15) : 5[/tex]

A divisão de um numero negativo por um positivo resulta em um numero negativo: [tex](-):(+)=(-)[/tex]

[tex]-(15:5)[/tex]

Divida os números

[tex]-3[/tex]

Resposta para C: [tex]-3[/tex]

D) [tex]125 : 25[/tex]

Divida os números

[tex]5[/tex]

Resposta para D: [tex]5[/tex]

POR FAVOR ME MARCA BRAINLIEST

In ΔCDE, m ∠ C = ( x − 4 ) ∘ m∠C=(x−4) ∘ , m ∠ D = ( 11 x − 11 ) ∘ m∠D=(11x−11) ∘ , and m ∠ E = ( x + 13 ) ∘ m∠E=(x+13) ∘ . Find m ∠ C . m∠C.

Answers

Answer:

<C =10°

Step-by-step explanation:

The sum of angles in a triangle is 180°. Hence,

<C+<D+<E =180

Given

<C =x-4

<D = 11x-11

<E = x+13

Substitute

x-4+11x-11+x+13 = 180

13x-2 = 180

13x =180+2

13x = 182

x = 182/13

x = 14

Get <C

Since <C = x-4

<C = 14-4

<C =10°

Answer: <C =10°

Step-by-step explanation:

A recipe calls for 14cup of brown sugar for every 23cup of white sugar. How many cups of brown sugar are required for every cup of white sugar? 1Points A 18cup of brown sugar B 38cup of brown sugar C 14cup of brown sugar D 34cup of brown sugar

Answers

Note: Consider all the numeric values are in the fraction form. Like [tex]14\to \dfrac{1}{4}[/tex], [tex]23\to \dfrac{2}{3}[/tex] etc.

Given:

A recipe calls for [tex]\dfrac{1}{4}[/tex] cup of brown sugar for every [tex]\dfrac{2}{3}[/tex] cup of white sugar.

To find:

The number of cups of brown sugar that are required for every cup of white sugar.

Solution:

We know that,

Required brown sugar for [tex]\dfrac{2}{3}[/tex] cup of white sugar =  [tex]\dfrac{1}{4}[/tex] cup

Using this, we get

Required brown sugar for 1 cup of white sugar =  [tex]\dfrac{\dfrac{1}{4}}{\dfrac{2}{3}}[/tex] cup

                                                                              [tex]=\dfrac{1}{4}\times \dfrac{3}{2}[/tex] cup

                                                                              [tex]=\dfrac{3}{8}[/tex] cup

So, [tex]\dfrac{3}{8}[/tex] cup of brown sugar is required for every cup of white sugar.

Therefore, the correct option is B.

Marcy concludes that the following system of equations has one solution.
y = 3x + 6
y = -2x + 10
Which characteristic of the equations did she use to reach this conclusion?
A. They have different slopes.
B. They have the same two variables.
C. They have y on the same side of the equation.
D. They have the same slope, but different y-intercepts.

Answers

Answer:

A

Step-by-step explanation:

took test on edge

Answer:

A

Step-by-step explanation:

Just took the test

m is the midpoint of pq. pm= 9x+3 and mq= 11x-17, find x and pq

Answers

9x+3=11x-7
3=2x-7
10=2x
x=5

pq=20x-14
pq=20*5-14
pq=86

The values of x = 5 and pq = 86.

What are Arithmetic operations?

Arithmetic operations can also be specified by subtracting, dividing, and multiplying built-in functions. The operator that performs the arithmetic operation is called the arithmetic operator.

Operators which let do a basic mathematical calculation

+ Addition operation: Adds values on either side of the operator.

For example 12 + 2 = 14

- Subtraction operation: Subtracts the right-hand operand from the left-hand operand.

for example 12 -2 = 10

* Multiplication operation: Multiplies values on either side of the operator

For example 12*2 = 24

Given that m is the midpoint of pq,

pm= 9x+3 and mq= 11x-17

⇒ 9x + 3 = 11x - 7

⇒ 3 = 11x - 9x -7

Rearrange the likewise terms and apply the arithmetic operations,

⇒ 3 = 2x - 7

⇒ 10=2x

⇒ x = 10/2

Divided by 2

⇒ x = 5

⇒ pq = 20x-14

⇒ pq = 20*5-14

⇒ pq = 86

Hence, the value of pq is 86.

Learn more about Arithmetic operations here:

brainly.com/question/25834626

#SPJ2

7/12+1/3 show your work and how you got your answer

Answers

Answer:

11/12

Step-by-step explanation:

find the lcm of 12 and 3 which is 12.

find a common factor in 12 and 3 and use those factors to multiply with their numerators.

7 * 1 and 1*4 =11

while the denominator or the lcm is 12

thus 11/12

The graph shows a system of equations:

Draw a line labeled y equals x plus 4 by joining the ordered pairs negative 4, 0 and 1, 5. Draw a line labeled 3 times y equals minus 2 x plus 2 by joining the ordered pairs negative 2, 2 and 4, negative 2.

What is the solution to the system of equations?

(−2, 2)
(2, 2)
(2, −2)
(−2, −2)

Answers

Answer:

I'm putting C but I'm not sure ill let you know if its right after the test

Step-by-step explanation:

Answer:

Its A-   (-2,2)

Because the solution is where the two lines collide and meet. :)

BRAINLIEST IS AWNSERED

Answers

Answer:

Y= -1x -3

Step-by-step explanation:

0,3

1,2

2-3=-1

1-0=1

-1/1=-1

y intercept is 3

A hot air balloon was flying at an altitude of 300 meters when the pilot decided to land by descending at a rate of 2 meters per second.For which of these functions doesy represent the altitude of the hot air balloon if x represents the number of seconds since the pilot started her landing?

Answers

It got be a least 27

1+1

Brainliest is in the deal first one to answer

Answers

Step-by-step explanation:

2 !!!

hope it helps

have a great day:))

Answer:

2 :D

Step-by-step explanation:

......thank you....

PLEASE ANSWER TODAY ASAP WILL GIVE BRAINLIEST TO FIRST CORRECT ANSWER.
Kelli and Karl each have a job. Kelli earns $20 an hour. She also receives a $100 weekly bonus.

Kelli made a table to show how much she earns in a given week.

Hours 0 5 10 15 20 25 30 35 40
Weekly Earnings 100 200 300 400 500 600 700 800 900
Karl earns $25 an hour and receives a $50 weekly bonus.

Karl made a graph to show how much he earns per hour in a given week.



How many hours will it take Kelli and Karl to earn the same amount of money?

Enter your answer in the box.

____hours

Answers

Answer:

I'm think it is 40hours (or 1 1/2 days)

please help i’ll do anything and give the brain thing :((

Answers

Answer:

add me on snap kharding1805 and I will add you back

Brenda and Melissa each have a band. Brenda's band plays songs in sets of 4 and Melissa's band plays songs in sets of 6. After performing together, both bands realize that they have played the same number of songs. What is the smallest number of songs each band could have performed?

Answers

Answer:

12 songs

Step-by-step explanation:

Brenda's band plays songs in sets of 4

Melissa's band plays songs in sets of 6.

After performing together, both bands realize that they have played the same number of songs.

What is the smallest number of songs each band could have performed?

The smallest number of songs each band could have performed can be calculated by finding the lowest common multiple of 4 and 6

4 = 8, 12, 16, 20, 24, 28, 32, 36, 40

6 = 12, 18, 24, 30, 36, 42

The lowest common multiple of 4 and 6 is 12

The smallest number of songs each band could have performed is 12 dongs

What is the value of expression below?

Answers

Answer:

B)1.1

Step-by-step explanation:

I'm 100% sure

Answer:

ans b.1.1

Step-by-step explanation:

hey just follow an thank me thats it

is y=30x a function?

Answers

Answer:no try y=Mx+b

Step-by-step explanation:

Answer:

y = 30x is a function.

Step-by-step explanation:

Given an equation, there should be only one corresponding (cor a sponding to pronounce) y value for any y value.

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