Mathematics High School

Please help!

Write the sum, and then write an equivalent expression by collecting like terms and removing parentheses

b. 2x - 7 and the opposite of 2x

Answers

Answer 1

Step-by-step explanation:

We need to write the sum of 2x - 7 and the opposite of 2x

Opposite of 2x is (-2x)

Sum means to add the number :

2x-7 + (-2x)

Remove parentheses,

2x-7 - 2x

Taking like terms together,

2x-2x-7= 0-7

= -7

Hence, the answer is -7.

Related Questions

12.07 divided by 0.71?

Answers

Answer:

The answer is 17

Step-by-step explanation:

Have a lovely day :)

if you answer this u will get 10, and I will answer one of ur questions ONLY if ur right

Answers

Answer:c or 35

Step-by-step explanation:

Answer: 35%.

Step-by-step explanation:

35% of the students preferred hamsters as a favorite pet.

The spinner shown is spun 300 times.
a) How many times would you expect the arrow
to stop on green if the spinner is fair?
The table below shows the number of times
the arrow stops on each colour.
Pink
Green
Colour
Frequency
Blue
45
Red
37
Purple
72
52
94
b) The spinner is spun once more.
Estimate the probability of landing on purple.
c) If the spinner is spun another 1000 times,
about how many times would you expect it to land on blue?

Answers

Answer:

A) 60

B) 72/300

C) 150

Step-by-step explanation:

A) P(green) = ⅕

⅕ × 300 = 60

B) purple: 72

45+37+52+94+72 = 300

Therefore, 72/300

C) 1000 × (45/300)

150

a, The number of times is 60.

b. The probability for landing should be [tex]72/300[/tex]

c. The number of times is 150.

Calculation of the number of times and probability:

Since

a. The spinner shown is spun 300 times

and, the probability of green should be like [tex]1/5[/tex]

So here one-fifth of 300 should be 60.

b. The probability is

First the total be like

= 45+37+52+94+72

= 300

Now the probability is

=  [tex]72/300[/tex]

C) The number of times should be

[tex]= 1000 * (45/300)[/tex]

= 150

Learn more about probability here: https://brainly.com/question/5680312

Which answer shows 0.00897 written in scientific notation?
0.897 x 10-2
8.97 x 10-3
8.97 x 10-2
8.97 x 20 3

Answers

A. It has a decimal and a zero before it with the zero YOUD add it onto the answer which is 0.00897

Answer:A

Step-by-step explanation:

John has a jar of between 500 and 600 coins that are all nickels, dimes and quarters. The ration of the number of quarters to dimes is 8 : 5 and the ratio of the number of dimes to the number of nickels is 6 : 11. What is the total value of the Money in john’s jar of coins?

Answers

Poooooooooooooooooooop

HELP ASAP EXPLAIN PLEASE

Answers

(A) The ratio is 6 to 1

The price of a toy usally costing 50 is increased to 65 work out percentage increase

Answers

Answer:

30%

Step-by-step explanation:

Increase in cost = 65 - 50 = 15

Percentage increase

[tex] = \frac{15 \times 100}{50} \\ \\ = 15 \times 2 \\ \\ = 30\%[/tex]

-b-3b+8b+4 in simplest form

Answers

Answer:

4b+4

Step-by-step explanation:

−b+−3b+8b+4

Combine Like Terms:

=−b+−3b+8b+4

=(−b+−3b+8b)+(4)

=4b+4

Amanda has 745 blueberries. She separated the blueberries into 5 equal groups. How many blueberries are in 2 of the groups?

Answers

Answer:

298

Step-by-step explanation:

5 equal groups of 745 would have 149 blueberries. You want to find how much is in 2 groups so you add 2 groups together, which is 149 + 149. That equals 298.

Solve for the missing variable plzz

Answers

Answer:

3

Step-by-step explanation:

A $40,000 car depreciates in value about 18% per year for the life of the car. Determine the value of the car after 7,8, and 9 years. What is the rate of decay?

Answers

Answer:

Value after:

7 years = $9971.42

8 years = $8176.56

9 years = $6704.78

Rate of decay = 18%

Step-by-step explanation:

A $40,000 car depreciates in value about 18% per year for the life of the car.

Determine the value of the car after 7,8, and 9 years. What is the rate of decay?

The formula for Depreciation is

FV = PV( 1 - r)^t

Where

FV = Future value

PV = Present value = $40,000

r = Depreciation rate = 18% = 0.18

t = time in years

a) After 7 years

$40,000 (1 - 0.18)⁷

= $9971.4188227

= $9971.42

b) After 8 years

$40,000 (1 - 0.18)⁸

= $8176.5634346

= $8176.56

c) After 9 years

$40,000 (1 - 0.18)⁹

= $6704.7820164

≈ $6704.78

= $9971.42

The Rate of decay = 18%

Gabriella went shopping for a new video game. The listed price of the video game was $47, but the price with tax came to $51.23. Find the percent sales tax.

Answers

Answer:

The anser is 9

Step-by-step explanation:

The sum of a number x and 8

Answers

Identify X first then I can solve this

Enter your answer and show all the steps that you use to solve this problem in
the space provided.


The two figures shown above are congruent. Identify the corresponding sides and
angles.

Answers

Answer:

Step-by-step explanation:

they're the same figure but turned 90 deg

congruent sides:

AD and RQ

BA and SR

BC and SP

PQ and CD

congruent angles:

D and Q

R and A

B and S

C and P

haven't done this in a minute sorry if this is wrong

Maya makes trail mix by combining 1/2 cup of mixed nuts, 1/4 cup of dried fruit, and 1/8 cup of chocolate morsels. What is the total amount of ingredients in her trail mix? Explain how you solved the problem.

Answers

Answer:

7/8 of ingredients

Step-by-step explanation:

To calculate the amount of ingredients in Maya's trail mix, we should first come up with a common denominator to convert all the fractions to.

Our LCD here could be 8, because 8 is divisible by 2 and 4, our other denominators.

1/8 stays as 1/8.

1/2 = 4/8

since 1 x 4 = 4 and 2 x 4 = 8

1/4 = 2/8

since 1 x 2 = 2 and 4 x 2 = 8

1/8 + 4/8 + 2/8 gets us 7/8.

(( I assume you are looking for the total amount in fraction form ))

Mary went to the supermarket and noticed that 3 pounds of chicken was $15. If she wanted to buy 7 pounds of chicken, how much would it cost

Answers

Answer

$35

Step-by-step explanation:

3lbs is 15 so get the price of 1 lb by dividing 15 by 3 which is 5. then multiply 5 by how many lbs you want. in this case 5 time 7 is 35

Answer:

$35.00

Step-by-step explanation:

each pound of chicken cost $5 so 5x7=35

please I BEG YOU! Find the ordered pair (x,y) if x+y=(5-x)+(5-y), x-y=(x-1)+(y-1).

Answers

Answer:

x=4, y=1

I think its that

Step-by-step explanation:

PLEASE HELP ITS DUE IN A FEW MINUTES

Answers

1. a+3a+4b=5b
2. a+3a=5b-4b
3. 4a=5b-4b
4. 4a=b
a=1/4b
(I think 1/4b is the answer) hope this helps :)

Answer:

a=5b-3a-4b

Step-by-step explanation:

We first need to move all terms that do not contain a to the right side of the equation. We cancel terms on the left side by adding -4b to both sides of the equation. a+4b-4b=5b-3a-4b

Ms. Storch is organizing a dance competition. She is charging a flat fee of 1 $18 for each group to enter the competition and an additional $2.75 per person in the group. If your dance group owes $70.25 for the competition, how many dancers participated?​

Answers

70.25-18 is 52.25. Then you just divide by the person charge; 2.75. There are 19 dancers.

name some underrated animes i should watch.

Answers

Answer:

one i have is samurai flamenco

Step-by-step explanation:

its cool to me

Answer:

personally I think Death Parade is underrated.

Step-by-step explanation:

You should watch it

Marcos reads 3 1/2 books in 1 3/4 weeks. At this rate, how many books does Marcos read in 1 week

Answers

3.5 books in 1.75 weeks
X books in 1 week
3.5/1.75=2 books

i’ll mark you brainliest

Answers

Answer:

thanks and it is 25

there are 4 prime numbers in the spinner

A 100% = 4

? = what about

100×1/4

= 25%

Which of the following segments is a radius of OK?

Answers

Answer:

A. line KM

Step-by-step explanation:

radius is half of the diameter

Answer:

A

Step-by-step explanation:

The radius of a circle is a segment from the centre to the circumference.

KM is a radius as it satisfies this criterion.

HELP ASAP !!!Simplify.
(-2)^4(-2) -

Answers

Answer: -32

Step-by-step explanation: You can start by first changing the equation to (-2)^5. Then you just multiply -2 by itself 4 times to get -32.

Answer is -32 , good luck

A_____consists of two endpoints.

Line Segment
Plane
Line
Point

Answers

The answer is line segment. :)

Help ASAP
5.(03.08)
Solve - 3x2 + 30% - 90 = 0. (2 points)
O x=5+216
O x=5715
X = 10+ 2115
O x= 10 + 15

Answers

Answer:

5 ± 2i√5

from the quadratic equation

3(x-2)+1=

I have to turn this in, in 10 minutes. Help.

Answers

Answer:

3x-6+1

Step-by-step explanation:

I know algebraaaaaa

X= 3/5, 3x-6+1, 3x-5, 3x=5, x=3/5

I'LL GIVE BRAINLIEST TO WHOEVER ANSWERS THE QUESTION CORRECTLY!!!!

A.) 6 units
B.) 10.7 units
C.) 5.5 units
D.) 3 units

Answers

5.5 units??????

please tell me if im right

Answer:

D

Step-by-step explanation:

If n = 4, all of the following expressions are equivalent except _____.


16

n -2

Answers

Answer:16

Step-by-step explanation:

Answer:

The answer is 16.

Step-by-step explanation:

I hope this helps

100 points pic attached will mark brainliest random answers will be reported

Answers

Answer:

NO. BECAUSE U NEED 4 POINTS TO FIND THE VALUE THERES ONLY THREE!!!

Step-by-step explanation:

SEE the IMAGE for Solution

HOPE it HELPS

Have a GREAT DAY

Yes its sufficient .

How?Steps?

First rewrite three co-ordinates.Find area of triangle through these points.Take Area=0 as Colinear points can't be vertices of the triangle .Then solve the equation algebraiccally and get x,y

Formula:-

[tex]\boxed{\sf Area\:of\:triangle=\dfrac{1}{2}\mid x_1(y_2-y_3)+x_2(y_3-y_1)+x_3(y_1-y_2)\mid}[/tex]

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