Given the expressions: 5x+2(x-4) and 7x-8 first prove that they are both equivalent and explain why your method proves this.

Answers

Answer 1
Use distributive property on first equation
5x + 2x - 8
Combine lick terms
7x -8
They are equal

Related Questions

Justin was asked to write six different equations based on the triangle below.
600
10
Four of the six equations that Justin wrote are correct. Select FOUR equations that are correct.
tan (60) = 73
tan ( 30 ) =
A
B.
c.
cos ( 30") =
D.
sin ( 60 ) = ?
E. F
cos (60) =
sin ( 30 ) = 3

Answers

Answer:

ADEF

Step-by-step explanation:

Four of the six equations that Justin wrote are correct which are Trigonometric functions as sin 60° =√3/2, cos 60° = 1/2, tan 60° = √3, and cot 60° = 1 /√3.

What are Trigonometric functions?

Trigonometric functions are defined as the functions which show the relationship between the angle and sides of a right-angled triangle.

Given that ΔABC

∠A = 60° and ∠B = 90° which is given in the figure

⇒ sin 60° = perpendiculer /hypotenuse

⇒ √3/2 = BC/10

⇒ BC = √3/2 × 10

⇒ BC = 5√3

⇒ tan 60° = perpendiculer /base

⇒ √3 =  5√3/AB

⇒ AB = 5√3/√3

⇒ AB = 5

sin 60° = 5√3/10 = √3/2

⇒ cos 60° = base / hypotenuse

cos 60° = 5/10 = 1/2

⇒ tan 60° = perpendiculer /base

tan 60° = 5√3/5 = √3

cot 60° = 1 /√3

Hence, four of the six equations that Justin wrote are correct which are Trigonometric functions as sin 60° =√3/2, cos 60° = 1/2, tan 60° = √3, and cot 60° = 1 /√3.

Learn more about the Trigonometric functions here:

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Which expression is represented by this model?

14×13=112

13×12=16

14×16=124

14×12=18

Answers

Answer:

the first one

Step-by-step explanation:

hope i helped

Answer:

a

Step-by-step explanation:

pls give brianleist

Please answer correctly !!!!!!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!!

Answers

Answer:

x is also 63 degrees this is because vertical angles are congruent or like equal in measure

Step-by-step explanation:

HOPE THIS HELPEDDDD

Answer:

63 degrees

Step-by-step explanation:

Since m is parallel to n, the angle that is marked 63 degrees and x are alternate interior angles. The alternate interior angle theorem states that alternate interior angles are congruent when a line cuts through two parallel lines. So, since m and n are parallel, these are congruent angles, making x also 63 degrees.

my best friend doesn't know the answer i aaint answering it for him help him help this dumbo

Answers

Answer:

5 batches

Step-by-step explanation:

Messi scored one goal every 82 minutes.How many goals did he score if he played for 4453 minutes in a season.

Answers

Answer:

Step-by-step explanation:

I’m not sure but I need points

Answer:

54

Step-by-step explanation:

divide

If BD and EG are parallel lines and m<DCF = 125°, what is m<DCA? help asap​

Answers

Answer:

The answer would be 60 degrees

Step-by-step explanation:

I got the answer from the question after getting it wrong

pleaseee helpp i have 20 mins for a unit testt

Answers

Answer: Its c

Step-by-step explanation:

I think

can someone help me out wit this question ​

Answers

Answer:

60 degrees

Step-by-step explanation:

My grandfather is shrinking. He decreases in size 1/4 cm each year. What is his total change in height over 5 years. Write your answer using negative numbers

Answers

Answer:

That old mans change in height is -1 1/4 over 5 years.

Step-by-step explanation:

Answer:

-5/4 cm would be the answer.

Step-by-step explanation

This is the answer because -1/4 cm multiplied by 5 years would equal -5/4 cm.

Three items weighing 1.29 kg, 3.59 kg and 4.36 kg are to be posted but are found to be overweight. By how much does the total weight exceed the 8.74 kg limit?

Answers

1.29+3.59+4.36 >8.74 or 9.24>8.74 , 9.24-8.74=0.5. Your answer is By 0.5 kgs

(1008.5)(2) pleasee helpp

Answers

Answer:

2,016.4

Step-by-step explanation:

are the two lines parallel,perpendicular, or neither ?

Answers

Answer:

1. neither

2. neither

3. parallel

4. perpendicular

Step-by-step explanation:

X-4y=15 and 8x-5y=42

Answers

Answer:

y=-2 8/9

x=31 1/2

Step-by-step explanation:

x-4y=15 --> x=4y+15

8x-5y=42

8(4y+15)-5y = 42

32y +120 - 5y = 42

27y = -78

y=-2 8/9

x=31 1/2

Solve the inequality >7
t/4>7

Answers

Answer:

t > 28

Step-by-step explanation:

Given

[tex]\frac{t}{4}[/tex] > 7 ( multiply both sides by 4 to clear the fraction )

t > 28

17) When filled to maximum capacity, a silo can hold about 4,000 cubic meters of corn. The radius of the silo is 8 meters. To the nearest meter, what is the approximate height (h) of the silo? ​

Answers

Answer: ion know i'm guessing 4

Step-by-step explanation: because it shows 8 at the top, so since it's full and it's 4,000 then that'll basically make 8 the 4000, so since 4 is half of 8 then we prolly have our answer right there

Answer: It would be 20

Step-by-step explanation: The formula for height would be h= v/pi r squared, just plug in the numbers

The Patel family went apple picking. The number of red apples they picked was 2 __ 2 9 times the number of green apples they picked. If they picked 45 green apples, how many red apples did they pick?

Answers

Answer:

100

I first made 45 a fraction = 45/1

Then i made 2 2/9 into an improper fraction

then make my equation

45/1 ×20/9=100

answer is 100 red apples

Step-by-step explanation:

At the science fair, Christine uses 8 fluid ounces of vinegar to make her volcano erupt. How many times can she make her volcano erupt with 1 quart of vinegar?

Answers

Answer:

1 quart gives 32 ounces. And you already know how many ounce are needed to erupt. So the last step you can figure out easily.

Give brainiest.

Christine can make her volcano erupt 4 times because 8 fluid oucens equals 1 cup and there are 4 cups in one quart.

Hope it helps!

Have a good day/night

Brainliest pls?

What is the binary number for 24​

Answers

Answer:

Here im to lazy to solve so a pic  

Step-by-step explanation:

Answer

11000

Explanation

I looked it up

In APQR, ZQ = ZP, RP = 13 and PQ = 19. Find the length of QR.

Answers

Answer:

13

Step-by-step explanation:

∠Q ≅ ∠ P ⇒ RP = RQ = 13

The Wells family goes out to eat dinner every Saturday night. Last Saturday was the 100th time the family had eaten at Happy Joe's Pizza House. The owner of Happy Joe's gave the family a 20% discount for customer loyalty. The bill was $27.50 before the discount. What was their bill after the discount?

Answers

33 dollars because 27.50 times .20 is equal to 5.5 so you add 27.50 plus 5.5 equal to 33 dollars

Does anyone understand this and know what the answer is?

Answers

Answer:

  y = -3x - 23

Step-by-step explanation:

When a transversal of the two lines is constructed, the alternate interior angles formed by the transversal are congruent. This means line m and n are parallel to each other so their slope will be the same.

Given:

  line m:   y = -3x + 8                 <======= slope is -3

line n going through point (-4, -11) with same slope as line m:

  y = mx + b

  (-11) = -3(-4) + b

  -11 = 12 + b

  b = -23                                    <===== y-intercept of line n

Use the above slope and y-intercept to form equation of line n:

  y = mx + b

  y = -3x - 23

Guy’s pls help me!!
What is the product of x^2 - 2x + 3 and x +1?
1) x^3 - x^2 + x + 3
2) x^3 - 2x^2 + 3x
3) x^2 - 3x +2
4) x^2 - x+4

Answers

Product = multiply
(X^2-2x+3)(x+1)
= 1) x^3 - x^2 + x + 3

simplify this expression: 54 - c + 3c by the power of 2 - 10

Answers

Answer:

Step-by-step explanation:

Sorry dunno

Answer:

3c 2 −c+44

54-c+3c2-10

((54 - c) + 3c2) - 10.

Step 2 :Trying to factor by splitting the middle term.

2.1 Factoring 3c2-c+44.

The first term is, 3c2 its coefficient is 3 .

A local business charges $20 to set up their sweatshirt printing machine with the design and $9.75 in materials per sweatshirt to print.
Write an equation for the average cost A(x) of printing x sweatshirts through this company. A(x)=?
Describe what happens to the average cost per sweatshirts as more and more are printed.
i need help

Answers

Given :

A local business charges $20 to set up their sweatshirt printing machine with the design and $9.75 in materials per sweatshirt to print.

To Find :

Write an equation for the average cost A(x) of printing x sweatshirts through this company.

Solution :

Let, number of sweatshirts sold are x.

So, average cost A(x) of printing is given by :

A(x) = 9.75x + 20

Therefore, average cost per sweatshirts are A(x) = 9.75x + 20 .

Hence, this is the required solution.

Mrs. Hoffman's Corner Store sells fuzzy socks for $4.00 a pair. Mrs. Hoffman buys the socks from a wholesale company for $1.00 a pair. What is the percent markup Mrs. Hoffman is using for these socks?

Answers

Answer:

3%

Step-by-step explanation:

Answer:

100%

Step-by-step explanation:

Markup % = ( Selling Price - Coast) / ( Coast) * 100

( $4 - $3) / ($3) * 100

1 * 100 = 100

What does -2(5x+6y-18) equal

Answers

Answer:

-2(5x+6y-18) = -10x-12y+36

What is the value of x?


4/5 x - 1/10 = 3/10
These are the answer choices.

1/4

8/25

2/5

1/2

Answers

Answer:

x=1/2

Step-by-step explanation:

4/5x-1/10=3/10

4/5x=2/5

x= 1/2.

Hope this helps :D

The following is the correct way to begin solving for the quotient of 39.538 divided by 5.3 using the standard method:

Division sign with 53 on the left and 39.538 inside the division sign.

True

False

Answers

Answer:

true

Step-by-step explanation:

Answer: the answer is false

A hamburger costs $(2x + 3), chips costs $(x - 1) and a drink costs $(3x - 5). Write an
algebraic expression for the total cost of a hamburger, chips and a drink.

Answers

Answer:

(2x+3)+(x-1)+(3x-5)

Step-by-step explanation:

add all your expressions & Ect together .

Miguel made 6 identical necklaces each, having beads and a pendant. The total cost of the beads and the pendant for all 6 necklaces was $29.40. If the beads cost a total of $19.80, how much did each pendant cost? ​

Answers

Answer:

29.40-19.80=9.6

9.6/6=1.6

So the answer is $1.60

Step-by-step explanation:

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