Solve for 5x - 7 + 2x = 21
Help this will be very much appreciated .

Answers

Answer 1

Answer:

x = 4

Step-by-step explanation:

Pull out like factors:  7x - 28  =   7 • (x - 4)

Solve:  x-4 = 0

Add  4  to both sides of the equation: x = 4

Please mark as brainliest.

Thanks!

Answer 2
I think it’s 4 but I’m not sure

Related Questions

convert the expression [tex]\sort[4]{3}[/tex] into exponential form

Answers

Answer:

what is this ?

Step-by-step explanation:

help pls jqewkfhnoiwek

Answers

Step-by-step explanation:

5 hours I think bc if you add 2 1/2 with 2 1/2 you add 2 + 2=4 then 1/2+1/2=1 then add 1 and 4 and you get 5

A supermarket purchases chickens wholesale from a farm for $4 each. The store then marks up the chickens 50%. After 10:00 p.m., the supermarket marks down the price of the chickens by 50% to make sure they all sell before the store closes. Which statements are true about the price of a chicken? Check all that apply.

O) The marked up price of a chicken is $6 before 10:00 p.m.
O) The 50% markdown is taken off the marked-up price.
O) The chickens sell for $4 after 10:00 p.m., because the 50% markup and 50%
O) markdown cancel each other out.
O) The 50% markdown is taken off the $4 wholesale price.

Answers

Answer:

a- the marked up price of a chicken is $6 before 10pm

b- the 50% markdown is taken off the marked up price

Answer:

A and B

Step-by-step explanation:

1 1/5 divided by 3 4/5

Answers

Answer:

6 /19

≅ 0.3157895

Step-by-step explanation:

Answer:

6/19

Step-by-step explanation:

This is your answer because first you have to make the to mixed fractions to improper fraction 6/5 and 22/5 are your improper fractions from there you divide them and that's how you get your answer

Hope this helps:)

Pls mark me brainlist

What is the difference between an expression and an equation? Use complete sentences and math vocabulary to explain!

Answers

Answer:

An expression is a number, a variable, or a combination of numbers and variables and operation symbols. An equation is made up of two expressions connected by an equal sign.

Step-by-step explanation:

Carl is making accessories for the soccer team. He uses 666.96 inches of fabric on headbands for 39 players and 3 coaches. He also uses 333.06 inches of fabric on wristbands for just the players. How much fabric was used on a headband and wristband for each player?

Answers

Answer:

The amount of fabric was used on :

a) headband for each player = 15.88 inches of fabric

b) wristband for each player = 8.54 inches of fabric

Step-by-step explanation:

From the above question, we were told:

For headbands

Carl is making accessories for the soccer team. He uses 666.96 inches of fabric on headbands for 39 players and 3 coaches.

Total number of persons = 39 players + 3 coaches = 42 persons

42 persons = 666.96 inches

1 person = x

Cross Y

42x = 666.96 inches

x = 666.96 inches/42

x = 15.88 inches

For wristbands

He also uses 333.06 inches of fabric on wristbands for just the players.

We have 39 players

Hence:

39 players = 333.06 inches

1 players = x

Cross Multiply

39x = 1 × 333.06 inches

x = 333.06 inches/3

x = 8.54 inches

The amount of fabric was used on :

a) headband for each player = 15.88 inches of fabric

b) wristband for each player = 8.54 inches of fabric

Complete the table. Round to the nearest cent if necessary.

Item Price Markup % Markup Retail Price
Shoes $75.05 32% $
$

Answers

Answer: 99.07$
Steps: First turn 32% into a decimal by moving the decimal right 2 places. You get 0.32. Then multiply 75.05$ by your decimal. You get 24.016. Add that to 75.05 and round your cent up, getting 99.07$ Sorry if i am incorrect this is my first answer. Hope I helped :)

Help Help Help Help please
Brainliest if correct

Answers

Answer:

least to greatest

|y-z|

|x-y|

|x-z|

z

Step-by-step explanation:

What is the meaning of gcf in math terms

Answers

Greatest common factor

If a line goes through the following two points: (0,-2) and (3,4), the slope of the line is:

Answers

Answer:

y = 2x – 2

Step-by-step explanation:

I need help with step by step : (−4x to the power of -5 y)(x to the power of -7 y)

Answers

Answer:

(−4x to the power of -5 y) = 20xy

(x to the power of -7 y) = -7xy

Step-by-step explanation:

Hope this helped!

Help me I neeeeeeede itttt

Answers

Answer:

True

Step-by-step explanation:

7.613 rounded to the nearest tenth is 7.6

help me and the 4 one says how many tables in a row are needed to seat 127 students explain your answear i have 30 minutes please hurry​

Answers

Answer:

#1 Is 7 Students

#2 Is 9 Students

#3 Is 16 Students

#4 is 125 tables

A survey of 100 doctors revealed that 2 put of every 5 doctors recommended Brand M deodorant. Based on the results, how many doctors did NOT recommend Brand M.


A.20
B.60
C.140
D.40​

Answers

Answer:

B. 60

Step-by-step explanation:

Solve for y.
3x + 4y = z
-----------------

Answers

Answer:

y= z-3x/4

Step-by-step explanation:

4y=z-3x

y=z-3x/4

Answer:

[tex]y=\frac{z-3x}{4}[/tex]

Step-by-step explanation:

[tex]3x+4y=z[/tex]

Subtract 3x from both sides:-

[tex]3x+4y-3x=z-3x[/tex]

[tex]4y=z-3x[/tex]

Divide both sides by 4:-

[tex]\frac{4y}{4}=\frac{z}{4}-\frac{3x}{4}[/tex]

[tex]y=\frac{z-3x}{4}[/tex]

OAmalOHopeO

13 m
12 m
wall
ladder
The ladder, the ground, and the wall form a right triangle.
ground
How far away from the wall does the ladder need to be placed so that it reaches 12 meters up the wall? If needed, ROUND TO THE NEAREST TENTH.
A
17.7 meters
B.
25 meters
С
5 meters
D
313 meters

Answers

Answer:

The ladder needs to be placed at 5 m from the wall.

Step-by-step explanation:

Pythagoras's Theorem

Being a and b the legs of a right triangle and c its hypotenuse, then

[tex]c^2=a^2+b^2[/tex]

The image shows a ladder of length c=13 m as the hypotenuse of the right triangle formed by the height, the ladder, and the ground.

We are given the height up the wall as a=12 m.

We calculate the distance b solving it from the equation above:

[tex]b^2=c^2-a^2[/tex]

Substituting:

[tex]b^2=13^2-12^2[/tex]

Operating:

[tex]b^2=169-144[/tex]

[tex]b^2=25[/tex]

Taking the square root:

[tex]b=\sqrt{25}[/tex]

b = 5 m

The ladder needs to be placed at 5 m from the wall.

-7(x-4)

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

Answers

Answer:

28−7x

i think :]

A model car is built to a scale of 1 in. : 2.5 ft. If the model is 5.8 in. Long how long is the car in real life?

Answers

Answer:

14.5 ft

Step-by-step explanation:

We are told that the model car is built to a scale of 1 in. : 2.5 ft.

That means 1 inches represents 2.5 ft in actual measurement.

Thus, for a 5.8 inch long model, the real life measurement is;

(5.8 inch × 2.5 ft)/1 inch = 14.5 ft

Help me ASAP 10 points plsssss helpppp

Answers

Answer:

its just 31^2=25^2 + b^2

Step-by-step explanation:

Julie works at a pizza place in Phoenix. She receives a 15% discount on any pizza that she buys. If a large pizza costs $14.00, what is the amount of Julie’s discount? What is the final cost of her pizza?

Answers

Answer:

The final cost of her pizza is $11.90

Step-by-step explanation:

First we need to convert 15% into a decimal, which is 0.15.

Now we multiply $14 and 0.15.

$14 × 0.15 = $2.10.

Now we subtract $2.10 from $14.00.

$14.00 - $2.10 = $11.90

What is the equation of the line that has a slope of 3/10 and goes through (-10, -17)?​

Answers

y+17=3/10(x+10)
Point slope form

Which input value produces the same output value for
the two functions?
O x= -12
O x= -9
O x= -6
O X=-3
HELP PLEASE

Answers

Answer

-6

Step-by-step explanation:

Took test

If george drives at a steady rate of 65 miles per hour, how many miles will he travel in 1.5 hours

Answers

He will travel the distance of 97.5 miles

PROBLEM: Juan hires an electrician. Juan pays a one-time fee of $30. Juan also pays $45 for each hour the electrician works. A. Write a function that can be used to find the total charge, c, Juan will pay when the electrician works, h, hours. Y=mx+b B. How much will Juan pay if it takes the electrician 6 1/2 hours to complete the job? (Vou should have 9 answers in question 2​

Answers

Answer: a. c = 30 + 45h

b. $322.50

Step-by-step explanation:

A. Write a function that can be used to find the total charge, c, Juan will pay when the electrician works, h, hours.

This will be calculated as:

c = 30 + 45h

B. How much will Juan pay if it takes the electrician 6 1/2 hours to complete the job?

Using the expression,

c = 30 + 45h

c = 30 + 45(6 1/2)

c = 30 + 292 1/2

c = 322.50

Therefore, Juan will pay $322.50

Determine whether the origin is included in the shaded region and whether the shaded region is above or below the line for the graph of the following inequality: (5 points)

y > one half x + 2

The origin is not included in the shaded region and the shaded area is above the line.
The origin is not included in the shaded region and the shaded area is below the line.
The origin is included in the shaded region and the shaded area is above the line.
The origin is included in the shaded region and the shaded area is below the line.

Answers

Answer:

The origin is not included in the shaded region and the shaded area is above the line.

Step-by-step explanation:

The first option is correct one:

The origin is not included in the shaded region and the shaded area is above the line.

The shade region is above the line because the function is increasing, and the origin is not included because the y- intercept is positive number

See attached

Triangle LMN is plotted on a coordinate plane. It is then dilated by a factor of 2 using the origin as the center of dilation, and translated 5 units left and 3 units up.

How is this sequence of transformations written in coordinate notation to correctly map triangle LMN to its image, triangle L'M'N' ?

A. ( x , y )→(2 x + 3, 2 y - 5)

B. ( x , y )→(2 x - 5, 2 y + 3)

C. ( x , y )→(2 x + 5, 2 y + 3)

D. ( x , y )→(2 x + 3, 2 y + 5)

Answers

Answer:

B. ( x , y )→(2 x - 5, 2 y + 3)

Step-by-step explanation:

when x goes to the left it is negative and when y goes up it is positive, making B the only possible answer choice.

what is m?

please help

Answers

Given:

[tex]\Delta ABC\sim \Delta QRS[/tex]

To find:

The missing value of m.

Solution:

We have,

[tex]\Delta ABC\sim \Delta QRS[/tex]

Corresponding parts of similar triangles are proportional.

[tex]\dfrac{AB}{QR}=\dfrac{AC}{QS}[/tex]

Putting the given values, we get

[tex]\dfrac{m}{10}=\dfrac{2}{4}[/tex]

[tex]\dfrac{m}{10}=\dfrac{1}{2}[/tex]

Multiply both sides by 10.

[tex]\dfrac{m}{10}\times 10=\dfrac{1}{2}\times 10[/tex]

[tex]m=5[/tex]

Therefore, the value of m is 5.

What is the slope of this line?​

Answers

Answer:

zero

Step-by-step explanation:

there is no slope because the line is horizontal

On a coordinate plane, 2 triangles are shown. Triangle 1 has points at A (negative 3, 4), B (negative 2, 1), C (negative 4, 1). Triangle 2 has points at A prime (4, negative 2), B prime (3, negative 5), C prime (5, negative 5).
Which rule represents the translation from the pre-image, ΔABC, to the image, ΔA'B'C'?

(x, y) → (x + 7, y + 6)
(x, y) → (x + 7, y – 6)
(x, y) → (x – 6, y + 7)
(x, y) → (x + 6, y + 7)

Answers

Answer:

On a coordinate plane, 2 triangles are shown. Triangle F G H has points (1, 1), (4, 5), (5, 1). Triangle F prime G prime H prime has points (negative 1, negative 1), (negative 4, negative 5), (negative 5, negative 1). What are the coordinates of vertex F" of ΔF"G"H"?

Step-by-step explanation:

It's B. (x, y) → (x + 7, y – 6)

Can someone help please. I will give brainliest :)

Answers

Answer:

the answer is C bcuz when you add 77 with 99 you get 176 and 176 is only divisible with 11

Step-by-step explanation:

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