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
notsponge [240]
3 years ago
9

Use an equation to solve the problem.

Mathematics
2 answers:
stiv31 [10]3 years ago
7 0
Let, the number = x
It is given that, 4x - x = -21
3x = -21
x = -21/3
x = -7

In short, Your Answer would be: -7

Hope this helps!
Lynna [10]3 years ago
6 0
X-4x=-21
-3x=-21 (like terms)
3x=21 (negate both sides)
x=7
You might be interested in
I believe this is 10x but I don’t know
NeTakaya
Yes the answer I should be 10.
3 0
3 years ago
Read 2 more answers
4x-3 (x-2y) + 1/2 (6x-8y)
Neporo4naja [7]
4x+2y i hope that helps :3
6 0
3 years ago
Read 2 more answers
The owner of a small pet supply store wants to open a second store in another city, but he only wants to do so if more than one-
Andrei [34K]

Answer:

The answer is "The null hypothesis was rejected".

Step-by-step explanation:

Following are the right-tailed test:

Calculating the null and alternative hypothesis:

H_0 : p = 0.3333\\\\H_a : p > 0.3333\\\\n = 150\\\\x = 64\\\\\hat{p} = \frac{x}{n} = \frac{64}{150} = 0.4267\\\\P_0 = 0.3333\\\\1 - P_0 = 1 - 0.3333 = 0.6667\\\\

z = \frac{\hat{p} - P_0}{[\sqrt{\frac{P_0 \times (1 - P_0 )}{n}}]}

   = \frac{0.4267 - 0.3333}{[\sqrt{\frac{(0.3333 \times 0.6667)}{150}}]}\\\\= 2.426

Calculating the right-tailed test:

P(z > 2.426) = 1 - P(z < 2.426) = 1 - 0.9924 = 0.0076\\\\P-value = 0.0076\\\\\alpha = 0.05\\\\P-value < \alpha

Therefore, we reject the null hypothesis.

This example shows that more than a third of the families own pets in this town.

5 0
3 years ago
In 2000 the population of a country was 4,580,000 by 2015 the population had increased by 18%
Aneli [31]
The answer is 3,755,600
4 0
4 years ago
What is the equation of the following line written in slope-intercept form? x-intercept of 2
OverLord2011 [107]

Answer:

your answer is the 2nd one

Step-by-step explanation:

4 0
4 years ago
Other questions:
  • Given f(x)=log4(x+3) and g(x)=3 find the x value such that f(x)=g(x)
    12·1 answer
  • 2x+y=-2
    7·1 answer
  • Which shows the pre-image of triangle X’Y’Z’ before the figure is rotated 90° about the origin
    10·2 answers
  • How does place value help you add decimal
    9·2 answers
  • 2 divided by 41.000 show all work
    7·1 answer
  • In AFGH, h = 9.6 inches, f = 2.5 inches and 2G=78°. Find the length of g, to the
    8·1 answer
  • Multiply -3/8x1/5x(-20)
    10·1 answer
  • <img src="https://tex.z-dn.net/?f=%20-%202x%20%2B%205y%20%3D%2017%20%20%5C%5C%20x%20%2B%20y%20%3D%209" id="TexFormula1" title="
    11·1 answer
  • Libby, Mike and Kyle share £44 in the ratio 2 : 3:6
    7·1 answer
  • If f(x) = x -5, what is f(2)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!