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
AleksandrR [38]
4 years ago
8

The diffrence of twice a number and 3 is -21

Mathematics
1 answer:
Alika [10]4 years ago
8 0

Answer:

x = - 9

Step-by-step explanation:

Step 1:

2x - 3 = - 21    Equation

Step 2:

2x = - 18     Add 3 on both sides

Step 3:

- 18 ÷ 2    Divide

Answer:

x = - 9

Hope This Helps :)

You might be interested in
6x2 - 5x - 4 is equivalent to:
Sophie [7]

Answer:

<em>(</em><em>2</em><em>x</em><em> </em><em>+</em><em> </em><em>1</em><em>)</em><em> </em><em> </em><em>(</em><em>3</em><em>x</em><em> </em><em>-</em><em> </em><em>4</em><em>)</em>

Step-by-step explanation:

Solution:

  • 6x² - 5x - 4
  • 6x²- (8 - 3)x - 4
  • 6x²- 8x + 3x - 4
  • 2x (3x - 4) +1 (3x - 4)
  • (2x + 1) (3x - 4)
4 0
2 years ago
Three randomly selected households are surveyed. the numbers of people in the households are 1,3,8 assume that samples of size n
Naily [24]
I assumed that 3 households are sampled.
Now, is the number in each of these households equal to 1, 3 and 8 people?

Next, the question says, samples of n=2 are randomly selected (with replacement) from these 3.

So are sample space is
11
13
31
33
18
81
38
88
83
88

This is done 9 times.
Is that how you understand the problem?
When they select the household with only 1 person, the variance is 0
When they select the household with 8 people, they variance will be from a discrete uniform distribution

Similarly for household with 3 individuals.



5 0
4 years ago
. A landscaping company charges $40 to mow a lawn and $15 per hour to weed garden beds. The
Murljashka [212]
The landscape company charges 30+15x
7 0
3 years ago
70 POINTS PLEASE HELP! A dump truck pours sand into a container in the shape of a rectangular prism with a square base of length
galina1969 [7]

Answer:

A

Step-by-step explanation:

The volume of a rectangular prism is:

V=\ell wh

Since the prism has a square base, each side length being 2, this means that both the length and width of our prism is 2. Therefore:

V=(2)(2)h=4h

So, we can write:

V=4h

The height h increases at a rate of about 8 inches or 8/12 = 2/3 feet per minute.

So, after t minutes, the height will be 2/3(t) feet. Thus, we can substitute:

\displaystyle V=4\Big(\frac{2}{3}\Big)t=\frac{8}{3}t

We want to find after how long it will be until the volume is 64 cubic feet. So, V = 64:

\displaystyle 64 = \frac{8}{3} t

Solve for t:

\displaystyle t=\frac{3}{8}(64)=3(8)=24\text{ minutes}

The correct answer is A.

3 0
4 years ago
Read 2 more answers
Find the values of x and y.
mash [69]

Answer:

y=60°

x=12°

Step-by-step explanation:

because the propertiy of parallelogram is the opposite side have equal measurement.

that is why y=60°

x+3=15 the paralla side are equal

x=15°-3°

x=12°

proof》》》》x+3=

12°+3°=15°

15°=15°

7 0
3 years ago
Other questions:
  • Evaluate the equation below
    13·1 answer
  • How would I find the surface area &amp; volume of this shape?
    9·2 answers
  • Help please ! ALGEBRA 2 WORD PROBLEM
    11·1 answer
  • Is it true rays continue infinitely in two directions
    15·1 answer
  • Increase 24 kg by 300 %.
    14·2 answers
  • Find the surface area of a sphere with a diameter of 22 in. Leave answer in terms of .
    7·1 answer
  • home i-Ready Practice: Proportional Relationships - Quiz - Level G ) When driving at a steady speed on the highway, Mr. Tran's c
    5·1 answer
  • Please help me I will give branliest! Find the indicated trig ratio and write your answer as a simplified fraction. Image attach
    11·2 answers
  • Perform the following operations and write the answers in radical form.
    10·2 answers
  • One package of socks cost $7. How many packages can you but with $56?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!