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
jeka57 [31]
3 years ago
9

-2(x - 2) = -3 - 21 I need help with that question, I've been trying to solve it for hours but i cant find the answer ​

Mathematics
2 answers:
iVinArrow [24]3 years ago
3 0

Answer:

x = 14

Step-by-step explanation:

you would first distribute the -2 with x - 2, which should give you -2x + 4, and you want to do the -3 - 21, which would give you -24, then subtract 4 from -2x + 4, then you should have -2x = -28, then divide it by -2, which should give you x = 14

USPshnik [31]3 years ago
3 0

Answer:

x = 14

Step-by-step explanation:

In this problem, we must isolate x

  1. Given: <em>-2(x - 2) = - 3 - 21</em>
  2. Simplify the right side: -<em>2(x - 2)= - 24</em>
  3. Distribute the -2 to x and -2 (multiply): <em>-2x + 4 = -24</em>
  4. Subtract 4 from both sides: <em>-2x = -28</em>
  5. Divide both sides by -2: <em>x = 14</em>
You might be interested in
Find an equation of the line having the given slope and containing the given point. m=-7,(5,9) the equation of the line is y=
k0ka [10]
Open this web, the web is really - really helps.................................... http://www.coolmath.com/algebra/08-lines/11-finding-equation-line-point-slope-01
6 0
3 years ago
Students pass a test it they score 50% or more. the marks of a large number of students were sampled and the mean and standard d
Schach [20]
So we are given that the mean is 42% and the sd (standard deviation) is 8%
Assuming our data is normal we can use the 68-95-99 rule

So one thing you should realize is that 42% + 8% is 50% which is passing. That is one standard deviation higher. So we use:
 
100 - 68 - 13.5 - 2.35 - 0.15  = 16. That means 16% of students passed the test. Which is terrible. They probably need to hit the books more.

Anyways if you have any question feel free to message me!
Hopes this helps!
3 0
3 years ago
Working together, it takes two different sized hoses 20 minutes to fill a small swimming pool. If it takes 30 minutes for the la
Anuta_ua [19.1K]

Answer:

60 minutes for the larger hose to fill the swimming pool by itself

Step-by-step explanation:

It is given that,

Working together, it takes two different sized hoses 20 minutes to fill a small swimming pool.

takes 30 minutes for the larger hose to fill the swimming pool by itself

Let x be the efficiency to fill the swimming pool by larger hose

and y be the efficiency to fill the swimming pool by larger hose

<u>To find LCM of 20 and 30</u>

LCM (20, 30) = 60

<u>To find the efficiency </u>

Let x be the efficiency to fill the swimming pool by larger hose

and y be the efficiency to fill the swimming pool by larger hose

x = 60/30 =2

x + y = 60 /20 = 3

Therefore efficiency of y = (x + y) - x =3 - 2 = 1

so, time taken to fill the swimming pool by small hose = 60/1 = 60 minutes

8 0
3 years ago
Simplify the radical expression.
Ber [7]

\bf \sqrt[4]{625x^{12}y^8}~~ \begin{cases} 625=&5\cdot 5\cdot 5\cdot 5\\ &5^4\\ x^{12}=&x^{3\cdot 4}\\ &(x^3)^4\\ y^8=&y^{2\cdot 4}\\ &(y^2)^4 \end{cases}\implies \pm\sqrt[4]{5^4(x^3)^4(y^2)^4}\implies \begin{array}{llll} \pm5x^3y^2\\\\ 5|x^3|y^2\\\\ |5x^3y^2| \end{array}

8 0
3 years ago
Bobby hopes that he will someday be more than 70 inches tall. He is currnebtyb70 inches tall how many more inches does bobby nee
xeze [42]
Bobby needs to grow at least 1 in to be more than 70 inches tall
8 0
3 years ago
Other questions:
  • Which equation models the linear relationship between the variables shown in the table?
    5·1 answer
  • 5+4+3-8+7-6 show steps
    5·1 answer
  • True or False?
    10·1 answer
  • Need the answers please help​
    5·1 answer
  • (5x-6)(-x+4) using the box method
    12·1 answer
  • Graphing standard form inequalities help plz
    10·1 answer
  • Anyone know this i need help this is for a final
    9·1 answer
  • Tell whether each figure is a polygon. if it is a polygon, name it by the number of each sides.
    15·1 answer
  • Ceasar opens a bank account and makes an initial deposit of $800. The banker tells Ceasar that he is going to receive an annual
    6·1 answer
  • Please help me asap​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!