How can we use variables and equations to help us
solve problems?

How Can We Use Variables And Equations To Help Us Solve Problems?

Answers

Answer 1

Answer:

Variables help show the numbers and equation show the numbers

Step-by-step explanation:

Answer 2

Answer:

If the equation is in the form, ax + b = c, where x is the variable, you can solve the equation as before. First “undo” the addition and subtraction, and then “undo” the multiplication and division. Solve 3y + 2 = 11. Subtract 2 from both sides of the equation to get the term with the variable by itself.

Step-by-step explanation:

Hope this helps.. ;)


Related Questions

Simplified fraction 8 (5/6) =

Answers

hi

technique is  to decompose both part of the fraction ( in prime numbers if possible )

 8 * 5/6   =     2*4*5  / 3*2   =   20/3

20/3

STEP BY STEP EXPLANATION


What is the median of the following 6 test scores?
64, 72, 85, 80, 72, 89

Answers

Answer:

76

Step-by-step explanation:

The given data is 64, 72, 85, 80, 72, 89.

First we arrange it in ascending order.

64,72,72,80,85,89

The middle two terms are 72 and 80.

There are 6 no of observations.

The median when n is even is given by :

[tex]M=\dfrac{72+80}{2}\\\\=76[/tex]

So, the median of given data is 76.

5(-6+8)-(8+12)=
Hjhsk

Answers

Answer:

-10

Step-by-step explanation:

pemdas

Answer:

Today : Saturday, 07 November 2020

Hour: 14.19 WIB (Indonesia)

_______________________________

5 (-6 + 8) - (8 + 12)

= 5 (2) - 20

= 10 - 20

= -10

27x9^3x can be written in the form 3^k where K is an expression in terms of x. Find k

Answers

Answer:

k = 3 + 6x

Step-by-step explanation:

Using the rule of exponents

[tex]a^{m}[/tex] × [tex]a^{n}[/tex] ⇔ [tex]a^{(m+n)}[/tex]

[tex](a^{m}) ^{n}[/tex] = [tex]a^{mn}[/tex]

Given

27 × [tex]9^{3x}[/tex]

= 3³ × [tex](3^{2}) ^{3x}[/tex]

= 3³ × [tex]3^{6x}[/tex]

= [tex]3^{3+6x}[/tex]

= [tex]3^{k}[/tex] → with k = 3 + 6x

what is the value of 8n when n=2

Answers

Answer:

16

Step-by-step explanation:

8(2) = 16

Answer:

16

Step-by-step explanation:

find each equation with the correct solution​

Answers

Answer:

15;9;-8

Step-by-step explanation:

1. 5/3x-3=2/3x+12

x=15 once you combine like terms

2. 5x+35-3x+12=7x+2

2x+47=7x+2

5x=45

x=9

3. 12x+20-3=9x-7

12x+17=9x-7

3x=-24

x=-8

This is my second attempt first is the brainiest!

Answers

Answer:

A:59 B:48

Step-by-step explanation:

A triangle is equal to 180 degrees. So the equation would be

73+x+(x-11)=180. To find the value of x, add all of the same values

73-11+x+x which is equal to 62+2x=180. Then subtract 62 from both sides

62-62+2x=180-62  so the equation is now 2x=118 now you divide each side by 2 to get x=59. now to get angle b you subtract 11 from 59 to get 48

what is the answer ..........

Answers

Answer:

9

Step-by-step explanation:

area of a right angled triangle is half×base×height

Answer:

Area = 9

Step-by-step explanation:

The area of a triangle is 1/2 the base times the height:

A = 1/2bh

To solve, simply substitute the numbers:

A = 1/2(3)(6)

A = 1/2(18)

A = 9

A chemical company makes up batches of copper sulfate solution by adding 250 kg of copper sulfate powder to 1000 liters of water. A laboratory chemist wants to make a solution of identical concentration, but only needs 350 mL (0.35 liters) of solution.

How much copper sulfate powder should the chemist add to the water? Enter your answer in the box below in decimal format.

The mass of copper sulfate that the chemist should add is ___
kg.

I will give brainylest if correct

Answers

Answer:

mass is 58kg

Step-by-step explanation:

geniuses please answer this.....step by step explanation ​

Answers

Logarithm base  8  of  512  is  3

Answer 3

please answer correctly
will mark brainlest 1hour to complete

Answers

Answer:

its (0, 0) because the line goes through thex and y intercept

Answer:

2, 0.15

Step-by-step explanation:

find the value of 3/27​

Answers

Answer:

The cubed root of a number is the number that, when multiplied by itself three times (number x number x number), gives the original number. For example, the cubed root of 27 is 3, as 3 x 3 x 3 = 27. The cubed root of 125 is 5, as 5 x 5 x 5 = 125. Unlike the square root, the cubed root is always positive

Step-by-step explanation:

Here is a picture that shows one side of a child's wooden block with a semicircle cut out at the bottom. What is the area of the wooden block? *HINT (subtract the semi-circle from the rectangle)* The face of an arch-shaped block. The horizontal side of the block is labeled 9 centimeters and the vertical side of the block is labeled 4.5 centimeters. A semi circle with diameter labeled 5 centimeters is removed from the block.

Answers

Answer:

30.7 cm² (nearest tenth)

Step-by-step explanation:

Area of the wooden block = area of rectangle - area of semi-circle

Area of Rectangle = length × width

Length = 9 cm

Width = 4.5 cm

Area of rectangle = 40.5 cm²

Area of semi-circle = ½(πr²)

Radius (r) = ½ of diameter = ½*5 = 2.5 cm

π = 3.14

Area of semi-circle = ½(3.14*2.5²)

Area of semi-circle = 9.8125 cm²

✅Area of the wooden block = 40.5 - 9.8125 = 30.7 cm² (nearest tenth)

The area of the wooden block is [tex]30.7 cm^2[/tex].

The calculation is as follows:

We know that

Area of the wooden block = area of the rectangle - area of semi-circle

Here

[tex]Area\ of\ Rectangle = length \times width[/tex]

Here Length = 9 cm

And, Width = 4.5 cm

So,

Area of rectangle = [tex]40.5 cm^2[/tex]

Now  

Area of semi-circle is

[tex]= \frac{1}{2} \pi r^2[/tex]

[tex]= \frac{1}{2} \times 3.14\times 2.5^2[/tex]

= [tex]9.8125 cm^2[/tex]

Now the Area of the wooden block is

= 40.5 - 9.8125

= 30.7

Therefore we can conclude that the area of the wooden block is [tex]30.7 cm^2[/tex].

Learn more: brainly.com/question/13549064

Marissa knits caps that she supplies to several baby stores. She purchases five bundles of yarn for $62.50. Select the
quantities that would best help determine how many bundles of yarn she will need per month to knit caps.
ОА. .
amount of yarn needed for each cap and number of caps knitted in a month
OB. cost to produce each cap and price per bundle of yarn
OC. number of caps knitted in a month and cost to ship the caps to each store
OD. price per bundle of yarn and amount of yarn needed for each cap

Answers

Answer:

I think OA because you would need to know how much yarn for each cap and how many caps she will make

what is 1+1 = plz anser me

Answers

Answer:

2

Step-by-step explanation:

1 + 1 = 2

Answer:

1+1=2

Step-by-step explanation:

ez math

PLEASE HELP I HAVE 5 MIN TO TURN THIS IN!!!!
There are two gardens, garden A and garden B are shown in the image below.
Determine if statement 2 is true or false and explain why the statement was true or false

Answers

Answer:

False

Step-by-step explanation:

Perimeter of garden A  is

P = 2(w + l) = 2( 2x - 3 + 5(2x - 3)) = 24x - 36

Perimeter of garden B  is

5x + 5 + 4x + 2 + 8x - 8 = 17x - 1

Sum of perimeters:

24x - 36 + 17x - 1 = 41x - 37

The statement 2 is FALSE as number we got is different from the one in the statement

Answer:

Falsethe equation required to fence both garden do not match the perimeter given on statement 2.41x - 37 ≠ 41x + 35

Step-by-step explanation:

garden A

Width (W) = 2x - 3

Length (L) = 5(W)

                = 5 (2x - 3)

                = 10x - 15

Perimeter A = 2L + 2W  (perimeter of a rectangular garden)

                    = 2(10x - 15) + 2(2x - 3)

                    = 20x - 30 + 4x - 6

                    = 24x - 36

garden B

side 1 = 5x + 5

side 2 = 4x + 2

side 3 = 8x - 8

Perimeter B = sides (1 + 2 + 3)  

                    = 5x+5 + 4x+2 + 8x-8

                    = 5x + 4x + 8x + 5 + 2 - 8

                    = 17x - 1

Garden A + garden B  = statement 2

24x - 36  +  17x - 1

24x + 17x - 36 - 1

 41x - 37

therefore, the statement 2 is false. as the equation required to fence both garden do not match the perimeter given on statement 2.

41x - 37 ≠ 41x + 35

James and Terry open a savings account that has a 2.75% annual interest rate, compounded monthly. They deposit
$50,000 into the account. How much will be in the account after 20 years?
a. $48,407.45
b. $90,600.15
c.$86,608.14
d.$80,894.18

Answers

Answer:

a. $48,407.45

b. $90,600.15

c.$86,608.14

d.$80,894.18

Find the measure of the complement of

Answers

Step-by-step explanation:

measure of the complement of??????

Answer:

the rest of the question???

Step-by-step explanation:

Brainliest
Answer: what is 123-12(324-234)
·ω·

Answers

Answer:

-957

Step-by-step explanation:

324-234=90

12*90=1080

123-1080=-957

Find the slope ( rise/run)

Answers

Answer:

[tex]\huge\boxed{-\frac{1}{3}}[/tex]

Step-by-step explanation:

In order to find the slope of a line, we need to find the rise over the run.

Basically - the change in y divided by the change in x.

[tex]\frac{\Delta x}{\Delta y}[/tex]

We can compare the two points and find both.

We go from (0, 2) to (3, 1).

From 0 to 3 (x) is 3 units.

From 2 to 1 (y) is -1 units.

Therefore we can divide the x by the y.

[tex]\frac{-1}{3}[/tex]

[tex]-\frac{1}{3}[/tex]

Hope this helped!

Is the expression 54 divided -6 ​undefined? If​ not, find the quotient.

Answers

9514 1404 393

Answer:

  54/(-6) = -9

Step-by-step explanation:

From your knowledge of multiplication tables, you know that ...

  6·9 = 54

From your knowledge of signed arithmetic, you know that ...

  54/(-6) = -(54/6) = -(6·9)/6 = -9

The expression is not undefined. The quotient is -9.

Expand the linear expression 6(7m+2)

Answers

It would be 42m+12 and that would be the expanded version

Answer:

6(7m+2)=42m+12

Step-by-step explanation:

Step 1: Distribute the 6 to 7m and 2. So, 6 x 7m = 42m

Step 2: Multiply the 6 x 2 which equals 12.

Step 3: 42m+12

Mr. Wilson bought gardening supplies for 79.75, not including tax. If the tax rate is 8%, what was the total cost of these gardening supplies?

Answers

Answer:

$86.13

Step-by-step explanation:

79.75*8=638/100=6.38

79.75+6.38=86.13

Answer: $86.13

Step-by-step explanation:

79.75*8%=6.38

79.75+6.38=86.13

Pls help meeee. Given 2

Answers

Uh is there more? If not it’s 2

Answer:

think 2 could be wrong

Brainlest pls

Step-by-step explanation:

x

EASY!!!!Example 5:


Why does the man fly out of the car?


Group of answer choices


Newton's 1st Law


Newton's 2nd Law


Newton's 3rd Law


Flag this Question

Question 145 pts

Give evidence or explain your reasoning for your answer to example #5:

Answers

Answer:Newton's First Law

Step-by-step explanation:

"When the car crashes, there is no unbalanced force acting on the person, so they continue forward (Newton's First Law). The person moves against the seat belt, exerting a force on it. The seat belt then exerts a force back on the person (Newton's Third Law). This causes a controlled deceleration of the person" -google

What is an equation of the line that passes through the points (7, 6) and (-2, -3)?

Answers

Answer:

y=1x-1

Step-by-step explanation:

m=y2-y1/x2-x1

-3-6=(-9)

-2-7=(-9)

-9/-9=1

6=1*7+b

1*7=7

7-7=0

6-7=-1

b=-1

y=1x-1

hope this helps :3

if it did pls mark brainliest

PLEASE HELP ME ASAP??!!
Classify the following triangle. Check all that apply.

Answers

Answer:

A. Isosceles

D. Scalene

E. Acute

Hi, please help!

Evaluate the expression when
x = 5,
y = -3,
z = -2.

x-5z/y

Answers

Answer: 5-/5-10/-3

Explaination: just fill in the letter it corresponds to

A talet weighs 2.22... pounds. What is the tablet's weight written as a mixed number fraction ?

Answers

Answer:

2 11/50

Step-by-step explanation:

Convert to a mixed number:

111/50

Hint: | Use long division to get a quotient and remainder.

Divide 111 by 50:

5 | 0 | 1 | 1 | 1

Hint: | How many times does 50 go into 111?

50 goes into 111 at most 2 times:

| | | | 2

5 | 0 | 1 | 1 | 1

| - | 1 | 0 | 0

| | | 1 | 1

Hint: | Summarize the results.

Read off the results. The quotient is the number at the top and the remainder is the number at the bottom:

| | | | 2 | (quotient)

5 | 0 | 1 | 1 | 1 |  

| - | 1 | 0 | 0 |  

| | | 1 | 1 | (remainder)

Hint: | In the equivalent mixed fraction, the quotient becomes the whole number part, the remainder becomes the numerator part, and the divisor (denominator) remains the denominator.

The quotient of 111/50 is 2 with remainder 11, so:

Answer: 2 11/50

Could someone please help me ASAP? I need a full explanation. P.S I will name u brainliest!! Thanks!

Answers

Answer: y = 90 degrees.

Step-by-step explanation: We are given that the supplementary angle of angle y is equal to 90 degrees. By definition, that means that y is also equal to 90 degrees. The solution would be:

y + 50 degrees + 40 degrees = 180 degrees

y + 90 degrees = 180 degrees

y = 180 degrees - 90 degrees

y = 90 degrees

hope this helps! :)

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