Mathematics High School

how to solve 7x+(-3)=18​

Answers

Answer 1

Answer:

x=3

Step-by-step explanation:

7x(-3)=18

add 3 to both sides

7x=21

divide by 7 on both sides

x=3

Answer 2

Answer:

7x+(-3)=18

7x-3=18

7x-3+3=18+3

7x=18+3

7x=21

7x/7=21/7

x=21/7

x=3

Related Questions

A nature park has two ticket plans. With one plan, you pay a $24 yearly membership fee plus $8
for each visit. The other plan has no membership fee, but you pay $14 for each visit. Isaac is on
the first ticket plan and Maddie is on the second ticket plan. After how many visits will they each
have paid the same amount
F 5
G6
H4
J 3

Answers

Answer:

G6

Step-by-step explanation:

Help with this math problem, please!!

Answers

Answer:

Step-by-step explanation:

that is hard

A lawn is shaped like a parallelogram with a base of 30 feet and a height of 12 feet. Covering the lawn with grass will cost $2.60 per square foot. How much money will it cost to cover the lawn with grass

Answers

Answer:

936 dollars

Step-by-step explanation:

I've got the area of the parallelogram and the area is 360 feet.area of parallelogram is equal to based x height then I took the money x the feet then I got 936 dollars hope it helps.

Calculate the amount of interest you receive if you invest $30,000 at 4%
for 3 years.

Answers

The answer is $37 use the internet
i think it’s 22,500?

What is the value of this expression?

7 + 4 × (6 − 2)2

Answers

Answer: 39
Explanation:
Use PEMDAS
First is parentheses
7 + 4 * (4) 2
Next is multiplication
7 + 16 * 2
Multiply 16 by 2 to get 32
Then add
32 + 7 = 39
Therefore, answer is 39
Hope it helps

What is the height, x, of the rectangular prism, if the volume is 750 cubic centimeters?

Answers

Answer:

6

Step-by-step explanation:

25x5=125

750 divided by 125 =6

Please use the heart to say thanks

1. NBC: A jacket you like costs $64. You have a coupon for 20% off. How much will you pay for the jacket?​

Answers

Answer:

$51.2

Step-by-step explanation:

If you subtract 64 to 20% then you end up with $51.2

what is 200 divided by 3

Answers

Answer:

66.6666666667

Step-by-step explanation:

I osnt know how to explain it but that's the answer sorry

The solution of the expression divide 200 by 3 is,

⇒ 66.67

We have to given that,

To divide 200 by 3

We have to divide the number as,

⇒ 200 ÷ 3

3 ) 200 ( 66.6

   - 18

   ------

       20

      - 18

      ------

          20

        - 18

        ------

            2

Therefore, The solution of the expression divide 200 by 3 is,

⇒ 66.67

Learn more about the divide visit:

https://brainly.com/question/28119824

#SPJ6

can someone please help me ​

Answers

Answer:

A

Step-by-step explanation:

The formula is y-b=m(x-a)

m is the slope

a is the x term

b is the y term

y-6=3(x-5)

Answer:think the answer c

Step-by-step explanation:

A woman divided her collection of 1,200 books into 10 equal parts. She gave 3 portions to her husband, 4 portions to her daughter, and the rest equally to three nieces. How many books did her daughter receive?

Answers

Answer: Her daughter received 480 books

Step-by-step explanation:

Total collection of books =1,200

Total collection of books divided into 10 equal parts =1,200/10 = 120

Number of books given to her husband= 3 portions which means

120 x 3 =360books

Number of books given to her daughter=4 portions which means

120 x 4  =480books

The remaining which equals 3 portions were given to her three nieces.

Help please!!!! Emergency
Will give brainiest, if correct!

What is the y-intercept of the line?

0
1
1/2
-2

Answers

The answer is 1
you are welcome :))
The answer will be one!!

Is it rational or irrational pls help

Answers

It is rational. Please mark me brainliest :)

Hoped I helped!

(-2,5) and (5,-4)
What will be the slope of the line passing through these points?

Answers

The slope is -9/7. I don’t have an explanation because I used an online calculator but that’s the answer in case you don’t have to show work.

Help!! due in 20 mins

Answers

Answer:

i believe A is not true .

Step-by-step explanation:Notice how b,c,and d are all similar . pretend the first box is box a and the second box is box b . the answer choices are all similar in the terms like a/b=b/a or b/a=a/b . yet answer A is like a/a=b/b and it makes no sense

3x2 + 5x-9 = 0
Quadratic formula
A=
B=
C=

Answers

Answer:

the answer are

a = 3, b

= 5 and

c = -9

Answer:

The answer is in the photo below! :D

Step-by-step explanation:

Hope this helped!

-LEI

The circular stone mound in Ireland called Newgrange has a diameter of 250 feet. A passage 62 feet long leads towards the center of the mound.
Find the perpendicular distance x from the end of the passage to either side of the mound. Round your answer to the nearest tenth.

Answers

Answer:

Step-by-step explanation:

 it's 125 for the radius and also 125-62 = 63

so 125+63 = 188

188 * 62 = X^2

11656 = X^2

107.96 = x

108.0  = x  ( to the nearest tenth )

The perpendicular distance x from the end of the passage to either side of the mound is : 107.93 feets

Diameter = 250

To obtain the perpendicular distance, x :

We use the relation : x × x = Length to either side of mound :

Mathematically ;

x × x = 62 ft × (250 - 62)

x² = 62 × 188

x² = 11656 ft²

Take the square root of both sides ;

x = √11656

x = 107.9629 ft

Hence, the perpendicular distance x from the end of the passage to either side of the mound is : 107.93 feets

Learn more : https://brainly.com/question/9175503

giving brainliest if correct don't answer just for points

Answers

Answer:

Step-by-step explanation:

8 Which numbers from this list are less than -0.94?
15
0.24, -2.23, 97%
6, -25,-0.95
16
F
15
- 2.23, and -0.95
16'
15:
6 -2.23, -2, and
and -0.95
H 0.24,
15
and -0.95
16
J
15
16
0.24, and -2.23
+

Answers

Answer:

-0.95, -2, -2.23, -25

Step-by-step explanation:

All you have to do is look at the sign of each number and see whether it's less than -0.94.

which of the following graphs does not represent a function of x?

PLEASE HELP ILL MARK BRAINLY IF CORRECT

Answers

i believe that it is graph 3 :) if it’s not right let me know.

Answer:

It's Graph 1 because it passes the Y axis two times

Round 2.689 to the nearest tenth

Answers

Answer:

2.700

Step-by-step explanation:

You have to see if it is rounding up or down and it is rounding up

The answer is 2.7 ..............

How do you write the equation for this word problem: DeShawn spent $650 on pairs of pants. Dress pants cost $100 and jeans cost $70. If he bought a total of 8, then how many of each kind did he buy? And can you please show this step by step. Thank you

Answers

Answer:

He bought 5 pairs of jeans and 3 pairs of pants.

Step-by-step explanation:

5j + 3p = 650

5 × 70 = 350

3 x 100 = 300

350 + 300 = 650

Please help me please




13

Answers

Answer:

a

Step-by-step explanation:

That is the only one equipped to this equation

Help me with this please

Answers

Answer:

6a is 80       6b120

Step-by-step explanation:

SOMEONE HELP ME PLS

Solve for x.

Answers

Answer:

X equals 6°.

Step-by-step explanation:

There is a geometry rule that states the outer angle of a triangle's interior angle is equivalent to the sum of the remaining two interior angles of the triangle. Following this rule, you can get that (6x + 8) + (5x + 8) = 82° ⇒ 11x + 16 = 82° ⇒ 11x = 66° ⇒ x = 6°.

decrease 784 in the ratio 3:4​

Answers

Answer:

336 and 448

Step-by-step explanation:

sum the ratio

divide the actual number by the sum i.e 784÷7=122

multiply 112 by 3 and by 4

The numbers are 336 and 448 respectively.

What is Arithmetic?

The mathematical branch known as arithmetic deals with the study and application of numbers, their relationships, and mathematical observations. The term "arithmetic" (which comes from the Greek word "arithmos," "number") often refers to the fundamental concepts in number theory, measurement, and computation (that is, the processes of addition, subtraction, multiplication, division, raising to powers, and extraction of roots).

As per the given data:

We have to decrease 784 in the ratio 3:4​

Consider that after decreasing, the numbers are x and y.

From the given data:

(x / y) = (3 / 4)

⇒ 4x = 3y

⇒ y = (4x/3) ...(i)

also, x + y = 784

Substituting from eq (i)

x + (4x/3) = 784

(7x / 3) = 784

x = (743 × 3) / 7

x = 336

and y = 784 - 336 = 448

Hence, the numbers are 336 and 448 respectively.

To learn more about arithmetic, click:

brainly.com/question/660898

#SPJ2

HELPPP!!

Select the interval where h is negative.
A) -4 < x < -3
B) -1 < x < 1
C) 3 < x < 4

Answers

Answer:

B) -1 < x < 1

Step-by-step explanation:

A function is positive on intervals (read the intervals on the x-axis), where the graph line lies above the x-axis. A function is negative on intervals (read the intervals on the x-axis), where the graph line lies below the x-axis.

Answer:

khan

Step-by-step explanation:

PLEASE HELP. ANYONE.

The amount of fence Farmer Thomas needs around her vegetable garden can be modeled by the formula:

V = 8w + 3l
where V = the perimeter of the vegetable garden; w = the width; l = the length

Which formula best represents l in terms of w and V ?


A- l=v-8w-3
B- l=3v-8w
C- l=v-8w/3
D- l=v-8w+3

Answers

V=8w+3l
V-8w/3 =l
Ans. C

What is the solution set of the inequality: 14- 3x < -1

Answers

Answer:

x>5 (Answer should have a positive sign.)

Step-by-step explanation:

To solve this problem, isolate x from one side of the equation.

First, subtract by 14 from both sides.

14-3x-14<-1-14

Solve.

-3x<-15

Multiply by -1 from both sides.

(-3x)(-1)>(-15)(-1)

Solve.

3x>15

Then, you divide by 3 from both sides.

3x/3>15/3

Solve.

15/3=5

x>5

In conclusion, final answer is x>5.

Evaluate 1/2y+1/7 when y=1/5 .

Answers

Answer:

17/70 ([tex]\frac{17}{70}[/tex])

Expand the expressions below using a rectangular array.
3.52x−5+6y

Answers

Answer:

3.52 x − 5 + 6 y = 0

Step-by-step explanation:

Other Questions
how is the circumference of a circle related to the length of its diameter? A dirty read occurs when? A number split by 3 in algebraic expression What happens in chapter 3 of Huckleberry Finn? What are the 3 types of sprint? What process produces minerals in the oyster shell in photo B? Where do the ions for these minerals come from? Choose one: A. The ions are gained during compaction of the sediment. B. The ions come from the soft parts of the animal. C. The animal is able to extract the ions from the water it lives in. D. The ions come from the food the animal eats. A man is four times as old as his son. In 5 years time he will be three times as old as his son. What is the present age of the son in years? What agile really means? What does infinity x mean? What is public property give example? Which one is a better measure of the economic performance of a country? An equation is given.y=3x+cCreate an equivalent equation by solving for c in terms of y and x. What values are important in Vietnamese culture? An author is writing an educational explanation of a historical event for a textbook. What type of syntax would best fit their purpose? aLong sentences with plenty of commas to reflect lengthy, emotional thoughts bMedium sentences with minimal punctuation to reflect a straightforward explanation cShort sentences with dashes and exclamation marks to reflect short, nervous bursts dSimple sentences that lack details and are difficult for the reader to follow What was the main reason for the Latin American revolution? R r, ?R=3;r=0,5;3. a researcher wants to study students to see if age of students has a positive relationship with grade point average. the researcher will get both age and grade point average from the college but not identifying individual students. grade point average appears to follow the normal curve. which test statistic would you use? what is a predicate function? group of answer choices a function that returns a boolean result. a function that has special meaning in a class. a function that takes no arguments. a function that calls another function. What key elements needs to be addressed in Jupiter Bachs corporate culture for the new sustainability strategy to have an impact on the performance When Marco was 18 years old, his friend, Yohan was 9. How old will Yohan be when Marco is 24?