1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zmey [24]
3 years ago
14

Which is a simplified form of the expression 3a + 7 – a – 7?

Mathematics
2 answers:
zheka24 [161]3 years ago
7 0

Answer:

A) 2a

Step-by-step explanation:

3a+7-a-7

3a-a+7-7

2a+7-7

2a

lord [1]3 years ago
3 0

Answer:

Choice A.

Step-by-step explanation:

3a + 7 - a - 7 = 3a+7 - a+7 = 3a-a = 2a

You might be interested in
The area of the triangle is ____ (rounded to the ones place) inches squared
Rzqust [24]

Answer: 27.7 square inches.

Step-by-step explanation:

Let 'a' be the side of equilateral triangle.

Then the perimeter of the triangle = a+a+a=3a

Given: Perimeter of the equilateral triangle = 24 inches                                                          We know that the area of a equilateral triangle is given by :-

4 0
3 years ago
What are the different types of sampling
ElenaW [278]

Answer:

they are:

1. random

2. systematic

3. convenience

4. cluster

5. stratified

3 0
3 years ago
Determine the intercepts of the line <br> Y ——-,——-<br> X——-,——-
77julia77 [94]

Answer:

(-8,0), (0,-6)

Step-by-step explanation:

3 0
3 years ago
It is known that 40% of adult workers have a high school diploma. If a random sample of 10 adult workers is selected, what is th
Maurinko [17]

Answer:

The expected number of adult workers with a high school diploma is 4.

Step-by-step explanation:

This random variable X can be modeled with the binomial distribution, with parameters n=10 (the sample size) and p=0.4 (the probability that a adult worker have a high school diploma).

The expected value of X is then the mean of the binomial distribution with the parameters already mentioned.

This is calculated as:

E(X)=\mu_b=n\cdot p=10\cdot0.4=4

4 0
3 years ago
What is the answer and how would I solve this?
ipn [44]

Answer:

Step-by-step explanation:

The answere is no solution, there are no values of X that makes the inequality true, therefore there is no solution

7 0
4 years ago
Other questions:
  • May someone please explain to me how to do this in the easiest way? I don't really understand. Thanks❤
    14·2 answers
  • What’s the correct answer for this question?
    6·2 answers
  • If an object moves 40 m north, 40 m west, 40 m south, and 40 m east, what's the total displacement?
    5·2 answers
  • 12. The square and rectangle shown below have the same perimeter length Show that the length of the rectangle (3x + 1) centimetr
    15·1 answer
  • The population of a community is known to increase at a rate proportional to the number of people present at time t. The initial
    7·1 answer
  • For which value of m 4/16=m/24
    10·2 answers
  • Can someone help me out please?
    6·1 answer
  • Least common multiple for 40 and 25
    6·1 answer
  • Confirm that f and g are inverses by showing that f(g(x)) = x and g(f(x)) = x.
    8·1 answer
  • To wrap a gift, you can choose from 4 kinds of wrapping paper, 6 gift bags, 2 colors of ribbon, 5 bows, and 2 stickers. You choo
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!