Show all of your work. Simplify the expression: - 3a + 7 + 5a​

Answers

Answer 1

Answer:

2a + 7

Step-by-step explanation:

-3a + 7 +5a

subtract the negative 3 from the 5

2a + 7

Answer 2

Answer: it would be 2a+7

Step-by-step explanation: Hope this help :D


Related Questions

Find the area of each figure and round to the nearest tenth if necessary

Answers

Given:

The figure of two semicircles with diameters 6 cm and 5 cm.

To find:

The area of the combined figure.

Solution:

It is given that the diameters of the semicircles are 6 cm and 5 cm so their radii are 3 cm and 2.5 cm respectively.

Area of a semicircle is:

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

So, the combined area of two semicircles with radii 3 cm and 2.5 cm is:

[tex]Area=\dfrac{1}{2}\pi (3)^2+\dfrac{1}{2}\pi (2.5)^2[/tex]

[tex]Area=\dfrac{1}{2}\pi (9)+\dfrac{1}{2}\pi (6.25)[/tex]

[tex]Area=14.137167+9.817477[/tex]

[tex]Area=23.954644[/tex]

Round the value to the nearest tenth (one decimal place.

[tex]Area\approx 24.0[/tex]

Therefore, the area of given figure is 24.0 sq. cm.

What is the prime factorization of 110?

Answers

Answer:

The prime factors of 110 are 2, 5, and 11.

Step-by-step explanation:

First, 110 = 2 * 55

Next, 55 = 5 * 11

Thus, the prime factors of 110 are {2, 5, 11}

Answer:

2 x 5 x 11 = 110.

Step-by-step explanation:

The prime factors of 110 are 2, 5, and 11.

-Factors of 110: 1, 2, 5, 10, 11, 22, 55 and 110

-Prime Factorization of 110: 110 = 2 × 5 × 11

1 × 110 = 110

2 × 55 = 110  

5 × 22 = 110

10 × 11 = 110

11 × 10 = 110

22 × 5 = 110

55 × 2 = 110

110 × 1 = 110

Milton purchases a 7-gallon aquarium for his bedroom. To fill the aquarium with water, he uses a container with a capacity of 1 quart.

How many times will Milton fill and empty the container before the aquarium is full?

Milton will fill and empty the container __ times.

Answers

The answer is 28 times

PLEASE HELP 8THGRADE MATHH!!

Answers

Answer:

10

Step-by-step explanation:

Answer:

table 3 (c)

Step-by-step explanation:

There are 150 politicians at a meeting.
They each shake hands with everyone
else. How many handshakes were there?

PLEASE HELP ASAP

Answers

Answer:

11175

Step-by-step explanation:

Person 1 will shake hands with 149 othersPerson 2 ... 148 (excluding the first person)Person 2 ... 147 (excluding the first two persons)...Person 149 ... 1  (with person 150)Person 150 ... none (already had 149 handshakes)

Total handshakes:

1 + 2 + ... 149 = 149(1 + 149)/2 = 11175

????????????????????????????????????????????????

Answers

Answer:

Second one to the top right i think

Step-by-step explanation:

What is the value of the y-intercept of the graph f(x)=138⋅1.9^x?

Answers

Answer:

Hi! The answer to your question is 138

Step-by-step explanation:

☆*: .。..。.:*☆☆*: .。..。.:*☆☆*: .。..。.:*☆☆*: .。..。.:*☆

☆Brainliest is greatly appreciated!☆

Hope this helps!!

- Brooklynn Deka

Answer:

( 0 , 0 )

Step-by-step explanation:

3a=a+36 find the value of a

Answers

Answer:

a=18

Step-by-step explanation:

Answer:

18

Step-by-step explanation:

Step 1: Write out your equation

3a=a+36

Step 2: Subtract a on both sides

2a=36

Step 3: Divide by 2 on both sides

a=18

Hope I helped

what type of association is there ??

Answers

hi i just need some points rq tyStep-by-step explanation:

3.2 Simplify the following
3.2.1 -2+3(1 - 4) - 2

Answers

Answer:

[tex]-13[/tex]

Step-by-step explanation:

[tex]-2+3(1-4)-2[/tex]

Simplify:

[tex]-2+3(1-4)-2\\-13[/tex]

-13 is your final answer!

Complete the equations.
look at photo

Answers

Answer:

25.8

258.

2580.

Step-by-step explanation:

just move the decimal that many times

Answer:

25.8

258

2580

Step-by-step explanation:

10 to the power of 2 is 100

10 to the power of 2 is 1000

10 to the power of 4 is 10000

100 * 0.258

1000 * 0.258

10000 * 0.258

Choose a positive number. Using this number as
the base, evaluate it when the exponent is 3,0,
and -2. Show all work.

Answers

Answer:

Step-by-step explanation:

Choose 3.

3^3 = 27;

3^0 = 1; and

3^(-2) = 1/9

Write this word sentence as an equation. 82 is the difference of a number b and 24

Answers

Answer:

106 - 24 = 82

Step-by-step explanation:

b = 106, solve 106 - 24 and you get 82.

Hope this helped.

Answer:

b/24=82

Step-by-step explanation:

Since the difference of an equation is the outcome of division we place 82 as the answer.  

Also, since 82 is greater than 24 we can assume that the variable "b" is larger than both 82 and 24.

an average speed of 57 km/h and the remaining 55 km at an average speed of 110 km/h. Find the average speed of the car for its entire journey.

Answers

Answer:

83.5km/h

Step-by-step explanation:

To find average you have to add up all the numbers in a given set then divide it by the amount of numbers in that set

Evaluate:
Σ18/1 (5n– 4) = [? ]

Answers

Basically, you are going to evaluate 5n - 4 from n = 1 to n = 18. Don't forget to add as you evaluate.

I will get you started.

Let n = 1 and then n = 2.

5(1) - 4 + 5(2) - 4 + the rest

5 - 4 + 10 - 4 + the rest

1 + 6 + the rest

7 + the rest

Just continue the pattern. You will then let n be 3, 4, 5, etc all the way to 18.

What are the measurements of FGT plssss?​

Answers

Answer:

The Foster–Greer–Thorbecke indices are a family of poverty metrics. The most commonly used index from the family, FGT2, puts higher weight on the poverty of the poorest individuals, making it a combined measure of poverty and income inequality and a popular choice within development economics.

Step-by-step explanation:

0000000

A store gives reward points for every dollar
spent. The number of reward points varies
directly with the total amount spent.
Sofia spends $300 and receives 15 reward
points.
Juan spends $900. He receives reward points
at the same rate as Sofia.
How many more reward points will Juan
receive than Sofia?




Please help me I give u 14 points please only correct answers ,!!!

Answers

Answer- 30

Explanation:
This is a picture I found of the ansewer hope this helped

Use the data for the books each class donated for a book drive.
Books Donated
28
15
40
45
27
19
50
36
42
37
21
25

Find the Median.

Answers

Answer:

rearrange in ascending order

15,19,21,25,27,28,36,37,40,42,45,50

using formula (n\2)th + (n/2)+1)th/2

(12/2)th + (12/2)+1)th/2

6th +7th/ 2

the 6th number=28and the 7th number=36

28+36/2

64/2

32

median =32

Plz make sure when you put an answer it is correct I’ll give you brainliest !

Answers

Answer:

C. 35 degrees

Step-by-step explanation:

Answer:

35 is your answer 21 plus 51 plus 73 plus 35

using this distribution find the probability that a teenager has 3 or fewer pairs of shoes in their closet(answer in decimal form)​

Answers

Correct me if I’m wrong

Answer:

.7

Step-by-step explanation:

What is the equation of the line shown in the graph?

Answers

Answer:

-1/5

Step-by-step explanation:

I couldn't tell whether or not your question was asking for either the slope intercept form or just the slope.

Your answer would be: y = -1/5x + 3   [if your question is asking for the slope intercept form]

OR

Your answer would be: -1/5   [if your question is asking for just the slope]

Question 5: Find the area of the following rectangle. Hint: multiply the binomials (x-3)(x+6). *

Answers

Answer:

B

Step-by-step explanation:

(x-3)(x+6)

x²+6x-3x-18

x²+3x-18

If Savannah increases her protein intake from 45g to 54g in order to stay competitive in volleyball. What is the percentage increase of her protein intake?

Answers

20% :) you can find the percentage difference between the numbers to make it easier

The high school students who attend Springfield Women's Academy are eligible to tryout for various teams within the athletic department. Students are 74% likely to tryout for softball; 27% likely to tryout for volleyball; 42% likely to tryout for tennis; and 88% likely to tryout for swimming. Many students choose to tryout for multiple teams. Students have equal probabilities of being freshmen, sophomores, juniors, or seniors.If Event A = freshman or sophomore, what is Event A'?

Event A' = freshman or senior
Event A' = freshman or junior
Event A' = sophomore or senior
Event A' = junior or senior

Answers

Answer:

Event A' = Freshman or Junior

Step-by-step explanation:

HELP ME PLEASE!
The graph below shows a line graphed through the points

Answers

Answer:

The answer is C.) y = 2x + 5

A 30 pack of Flaming Hot Cheetos cost $10.82 at
Costco. A 50 pack of Flaming Hot Cheetos cost
$17.25.

a) Which is the better buy? (You are trying to
compare the cost of a 30 pack and 50 pack of
chips. This is not possible without finding
the unit rate.)

b) What is the difference between the unit
prices? (You need to use the information
from part a to answer this question.)​

Answers

Answer:

50 pack

[tex]\$0.01[/tex]

Step-by-step explanation:

Number of packs at Costco = 30

Cost of 30 packs at Costco = $10.82

Number of packs at the other place = 50

Cost of 50 packs = $17.25

Cost of one pack when 30 packs are bought

[tex]\dfrac{10.82}{30}=\$0.36[/tex]

Cost of one pack when 50 packs are bought

[tex]\dfrac{17.25}{50}=\$0.35[/tex]

It is better to buy the 50 pack.

Difference in the unit prices = [tex]0.36-0.35=\$0.01[/tex].

Please answer I will mark brainliest

Answers

Answer:

Should be 63 degrees

Step-by-step explanation:

I can't tell if that's one of your options.

help with these 2 questions pls

Answers

Answer:

6 .

4X + 2 + X = 8X +2 -3X

5X+2=5X+2

0=0

The two sides of the equation are always equal ,so 3 or any other number can be a solution for it .

7.

6X+6-3X+6= X+4

3X+12= X+4

2X= -8

X= -4

Hope it was helpful .

Step-by-step explanation:

I hope that everything I have written helps you.if I'm wrong write the answers in your paper doesn't match with mine please tell me I'll try it again.

A CD usually sells for $18.00. If the CD is 10% off, and sales tax is 7%, what is the total price of the CD, including tax?
A. $18.30
B. $17.33
C. $17.46
D. $17.50

Answers

Answer:

b

Step-by-step explanation:

11. Choose the appropriate graph for the equation below using slope-intercept form. y = -3x + 8 (multiple choice)​

Answers

Option 4, the root (8/3,0) the vertical intercept is (0,8)
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