como resolver a equação -7. (x-3)=x +5

Answers

Answer 1

Answer:

[tex]x=2[/tex]

Step-by-step explanation:

[tex]-7(x-3)=x+5[/tex]

Distribute the [tex]-7[/tex] into [tex](x-3)[/tex]:

[tex]-7x+21=x+5[/tex]

Subtract [tex]x[/tex] from both sides of the equation:

[tex]-8x+21=5[/tex]

Subtract [tex]21[/tex] from both sides of the equation:

[tex]-8x=-16[/tex]

Divide both sides of the equation by the coefficient of [tex]x[/tex], which is [tex]-8[/tex]:

[tex]x=2[/tex]

_

Check your work by substituting [tex]2[/tex] into the initial equation:

[tex]-7(2-3)=2+5[/tex]

[tex]-14+21=2+5[/tex]

[tex]7=7[/tex]

The answer is correct!


Related Questions

Simplify.
3(x + 4) plzzz answer

Answers

Answer:

3x+12

Step-by-step explanation:

When we multipy 3 with (x+4) it becomes 3x+12

Answer:

3x+12

Step-by-step explanation:

3(x+4)

3*x=3.....keep the x with 3 because x just represents 1

3*4=12

so your answer should be

3x+12

hope this helps :)

Evaluate the expression for x = 2 and y = 4. Enter your answer in the box.

16x0 + 2x2 • y –1

Answers

Answer:

16*x*0+2*x*2*y-1=11

Step-by-step explanation:

ok so first we substitute-

16*2*0+2*2*2+4-1

=0+8+3 (order of operations)

=11

stuck on the question​

Answers

Answer:

8

Step-by-step explanation:

By the corresponding angle theorem, we can find that:

17x - 4 = 12 + 15x

Now to find the value of x, we can just solve for x in the equation that we found.

17x - 4 = 12 + 15x

Subtract 15x from both sides.

2x - 4 = 12

Add 4 to both sides.

2x = 16

Divide both sides by 2.

x = 8

So we found that x = 8. So the value of x would be 8.

I hope you find my answer and explanation to be helpful. Happy studying.

Solve the compound inequality and graph your solution on the number line.

I WILL GIVE YOU BRAINILIST IF YOU HELP!!

Answers

Answer:

Step-by-step explanation:

-10<x≤10

Open circle on -10

Closed circle on 10

Mr. Anderson had 4/5 of a pizza left over and split it among his 4 children. What fraction of the pizza did each child get?

Answers

Answer:

1

Step-by-step explanation:

there were  5 pieces now there is 4. so 4 slices of pizza divided by 4 is 1

Wendy was traveling from Baltimore, MD to Cleveland, OH. For the first 2 3/4 hours of her trip, she drove an estimated 63 mph. For the second portion of her trip, which took her 3 1/2 hours, she drove at an estimated rate of 57 mph. Write an expression to model her distance and calculate how far she drove. You may use the distance formula d=r*t (distance = rate * time).

Answers

Answer:  D = r*t + r*t   372 3/4 = (63 * 2 3/4) + (57 * 3 1/2)

  OR

D1 + D2 = Total  173 1/4 + 199 1/2 = 372 3/4

D1 = r1 *t1       63 * 2 3/4 = 173 1/4

D2 = r2 * t2      57 * 3 1/2 = 199 1/2

Step-by-step explanation:

The trip is in two segments, so calculate the distance driven in each portion, then add the two distances together to get the total.

Another way to write the expression would be  D = r*t + r*t  

The total distance that Wendy drove to Cleveland will be 372.75 miles.

For the first 2 3/4 hours of her trip, she drove an estimated 63 mph. Then, the distance traveled will be:

= 63 × 2 3/4

= 173.25 miles.

For the second portion of her trip, which took her 3 1/2 hours, she drove at an estimated rate of 57 mph, the distance will be:

= 57 × 3 1/2

= 199.5 miles

The total distance traveled will then be:

= 173.25 miles + 199.5 miles

= 372.75 miles.

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Which expression can be used to solve 3/5 divide by 7/10

Answers

Answer:

[tex]\frac{3}{5} *\frac{10}{7}[/tex]  

=  [tex]\frac{30}{35} =\frac{6}{7}[/tex]

raise the product of 36 and 9 to the power sum of 2 and 4

Answers

Answer:

Step-by-step explanation:

36 x 9 = 324

324^6

=324*324*324*324*324*324

=324^6

=1156831381426176

3x = 27 + 3y
3x - 10y = 27

please explain how you got the answer.

Answers

Answer:

Hi there!

Your answer is:

Y= 0

X= 9

Step-by-step explanation:

3x=27+3y

3x-10y=27

Solve one of them for Y

I chose the first equation

3x=27+3y

-27

3x-27=3y

/3

x-9 = y

NOW, plug y in the second equation!

3x-10y=27

y= x-9

3x-10y=27

3x-10(x-9) = 27

Solve for x!

3x-10x+90 = 27

-7x + 90 =27

-90

-7x = -63

/-7

x= 9

FINALLY, plug back in x for y equation

y=x-9

x=9

y=9-9

y=0

Help me pleaseee thank you In advance please explain to me too so i know what to do next time :)

Answers

I believe it would be options B and C.
Explanation: An angle bisector divides an angle into two congruent angles. So basically, it is a line that divides an angle perfectly in half. Each half has to be equal. B and C make sense because they are both split evenly.

What is the value of the expression -8mutiplied by 3.2

Answers

Answer:

-25.6

Step-by-step explanation:

Whatever3443 pls help me someone is murdering me ✌

Answers

Answer:

i-

Step-by-step explanation:

Answer:

Oh no! I'm sorry!

Step-by-step explanation:

What is the difference of TR(325)−TR(321)

Answers

ANSWER: tr(325) - tr(321) = 4rt

Joseph is making kebabs.he wants each kebab to have 3 pieces of meat and 4 pieces of vegetables.Which of the following could Joseph use to make kebabs without any leftovers?

Answers

Answer: Joseph could use C), D), and E) to make kebabs without any leftovers:

C) 30 pieces of meat and 40 pieces of vegetables

D) 45 pieces of meat and 60 pieces of vegetables

E) 72 pieces of meat and 96 pieces of vegetables

How were the answers determined? To solve for the answer, here are some pointers:

   Consider the given which states that each kebab has 3 pieces of meat and 4 pieces of vegetables, and Joseph wanted to make kebabs without any leftovers - meaning, there should be no extra piece of meat or no extra piece of vegetable.

   In choosing which is the answer, make sure that the number of pieces of meat must be divisible by 3 (pieces of meat), and the number of pieces of vegetables must be divisible by 4 (pieces of vegetables). This was also based on the given.

   Moreover, the quotient for meat and the quotient for vegetables must be equal to each other so that there will be no leftovers.

   Therefore, the answers are C), D), and E) because these three answers satisfy the conditions abo

Step-by-step explanation:

The explicit rule for a sequence and one of the specific terms is given. Find the position of the given
term.
f(n)=5.5n - 52; 25

Answers

Answer:

This sequence is neither arithmetic or geometric. 25 is either the 10th term, 10.2 or 10/3 either will work.

What is the value of x

Answers

Answer:

x equals 72

Step-by-step explanation:

it is a 1:3 scale

Select True or False for each statement about equilateral triangles.

A. An equilateral triangle has 3 equal angle measures.
A True B False
B. An equilateral triangle has 3 equal side measures.
A True B False
C. An equilateral triangle has 3 lines of symmetry.
A True B False

Please help!!

Answers

Answer:

→ A. True

B. True

C. True ( lines are symmetry but triangle is not symmetry )

A certain standardized test measures students’ knowledge in math and English. The scatterplot displays the scores for 10 randomly selected students.


The equation y = 54.16 + 0.87x is called the least-squares regression line because it:


is least able to make accurate predictions for the data.

makes the sum of the squared residuals as large as possible.

makes the sum of the squared residuals as small as possible.

causes the relationship between English scores and math scores to be strongest.

Answers

Answer:

it's C

Step-by-step explanation:

The correct answer is: The equation y = 54.16 + 0.87x is called the least-squares regression line because it makes the sum of the squared residuals as small as possible.

The least-squares regression line is a line that best fits the given data points by minimizing the sum of the squared residuals. Residuals are the vertical distances between the actual data points and the predicted values on the regression line. By minimizing the sum of the squared residuals, the line is able to provide the best overall fit to the data.

Therefore, the least-squares regression line aims to minimize the differences between the predicted values and the actual data points, making the sum of the squared residuals as small as possible.

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hhhheeeellllpppppp pls​

Answers

Answer:

3rd one 1000 times greater

Step-by-step explanation:

first you make 10^9 into 1000000000 then you make 10^6 into 1000000 then you divide them both and you get 1000

How much money will Monique make if she works 10 hours this week as a lifeguard and also dog sits?

Answers

Answer: $140

Step-by-step explanation:

Answer:

140

Step-by-step explanation:

i did it before

so, um I'm very confused, the question says put the number of protons, electrons, and neutrons.​

Answers

Answer: 4 square units

Step-by-step explanation:

To find the value of A in square units, substitute into the equation for s and solve.


Bella works at the Blue River Cabin Resort, which has 220 rooms. Each room is available at a price of $79 per night Bella uses the function R(x) -79x to calculate the resort's nightly revenue, where R(2) represents
the revenue and represents the number of rooms booked

Answers

Answer:

R(x) is  your answer

Step-by-step explanation:

What’s the diameter and the radius

Answers

Answer:

Radius is 12 (24/2)

Diameter is 24 (a straight line passing from side to side through the center of a circle)

What is the slope of a line with the following coordinates: (2, 4) and (6, 12)

Answers

Answer:

y=2x

Step-by-step explanation:

The answer for your problems is m = 2

A corporation earned a profit of $2.5 × 104 for 1 × 103 days in a row. What was the corporation’s total profit during this time period?

Answers

Answer:

26780

Step-by-step explanation:

First, let us find how much did the corporation earn in one day.

$2.5x104=260

Now that we have found the amount of money the corporation earned in a day, it is time to find how many days did the streak continue.

1x103=103

Finally, let us find how much they earned during that period.

260x103

Total profit of corporation during a time period of 103 days is $ 26780

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Profit earned by Corporation in a day = $ 2.5 x 104

                                                              = $ 260

Total time period of Corporations' profit = 1 x 103 days

                                                                   = 103 days

Total profit during a time period of 103 days =
Profit earned by Corporation in a day x 103 days

Total profit during a time period of 103 days = 260 x 103

                                                                          = $ 26780

Hence , total profit of corporation is $ 26780

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A number is randomly selected from the set {1, 2, 3, 4, 5, 6, 7, 8}. If the number chosen is greater than 3, what is the probability it is odd?

Answers

Answer:

Hello!

The probability that the number chosen is greater then 3 and odd is 2/8

There are 5 numbers greater then 3, and of those 5, five and seven are the only odd numbers. So that is 2/8

Step-by-step explanation:

There are 5 numbers greater then 3, and of those 5, five and seven are the only odd numbers. So that is 2/8

If you are only talking about the numbers that are actually greater then 3 as your population, it is 2/5 :)

(I would appreciate Brainliest, please and thanks)

If a number randomly chosen is greater than 3, the probability that the number is odd is 2/5

How to determine the probability?

The set of numbers is given as:

Set =  {1, 2, 3, 4, 5, 6, 7, 8}.

The numbers greater than 3 are:

G3 =  {4, 5, 6, 7, 8}

The odd numbers greater than 3 are

OG3 =  {5, 7}

The required probability is then calculated using:

P = n(OG3)/n(G3)

This gives

P = 2/5

Hence, the probability is 2/5

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At Store #1 for $625 you can buy 25 pairs of shoes. How much will you pay for 31 pairs of shoes?

Answers

you’ll pay $775 since 25 pairs were $625

Answer:

Step-by-step explanation:

25 pairs of shoes = $625

You need to find how much each pair of shoes cost.

1 pair of shoes = [tex]\frac{625}{25}[/tex] = $25

So for 31 pairs of shoes, you just multiply by 25

31 pairs of shoes = 25 x 31 = $?

PLEASE HELP I MESSED UP ON THE OTHER ONE! I MAY MARK BRAINLIEST

Answers

Answer:

b, c, d (please mark me brainliest)

Step-by-step explanation:

A box of cereal states that there are 84 cal in a 3/4 cup serving what is the unit rate for calories per cup how many calories are there in 2 cups of cereal

Answers

Answer:

2 cups of cereal, would be 224 calories.

Step-by-step explanation:

If one cup is 112 calories, all you have to do is multiply it by 2. Which gives you the answer of 224.

Answer:

unit rate - 112

2 cups - 224

Step-by-step explanation:

I tried my best to figure this out, i hope its correct !!

Use the given property to complete each statement​

Answers

Answer:

1. UT = MN

2. m<QWR = 30

3. SB = MN

4. y = 51

5. JL (with the line segment symbol above)

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