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
Murrr4er [49]
3 years ago
14

What is x? -2.5x- 2=18​

Mathematics
1 answer:
snow_tiger [21]3 years ago
3 0

Answer:

x = -8

Step-by-step explanation:

-2.5x - 2 = 18.

Add 2 to both sides.

-2.5x = 20.

Divide both sides by -2.5.

x = -8

You might be interested in
Help is much appreciated :)
andrew-mc [135]

Answer:

Your answer is B

y < x

y ≥ -x

Step-by-step explanation:

6.14 Checkpoint: Systems of Linear Inequalities

I took the test.

7 0
3 years ago
Coal is carried from a mine in West Virginia to a power plant in New York in hopper cars on a long train. The automatic hopper c
svp [43]

Answer:

0.2839 = 28.93%

Step-by-step explanation:

In order to find find the probability that one car chosen at random will have less than 68.5 tons of coal, we have to find z

Le x be tons of coal in a car

Z = (x – mean)/standard deviation

Z = (x – μ)/ σ

P (x<68.5) = P(z < (68.5-69)/0.9)

P (x<68.5) = P(z < -0.5555)

Then we use the z table to find the area under the curve.

P (x<68.5) = 0.2893

5 0
3 years ago
Which two values of X are roots of the polynomial below 4x^2-6x+1
PtichkaEL [24]

4x^2-6x+1=0\\\\a=4,\ b=-6,\ c=1\\\\\Delta=b^2-4ac\\\\\Delta=(-6)^2-4(4)(1)=36-16=20\\\\\sqrt\Delta=\sqrt{20}=\sqrt{4\cdot5}=\sqrt4\cdot\sqrt5=2\sqrt5\\\\x_1=\dfrac{-b-\sqrt\Delta}{2a},\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\x_1=\dfrac{-(-6)-2\sqrt5}{2\cdot4}=\dfrac{3-\sqrt5}{4}\\\\x_2=\dfrac{-(-6)+2\sqrt5}{2\cdot4}=\dfrac{3+\sqrt5}{4}

5 0
4 years ago
Is this a function? explain briefly
mixas84 [53]
No it’s not a function because it doesn’t pass the vertical line test. if you do the test, you’ll find that the line intersects with the graph more than once
5 0
3 years ago
Write the ratio as a fraction in lowest terms. Be sure to make al necessary conversions. 70 cents to $8
dedylja [7]
70 cents       $1                70            7
------------- * -------------- = ------- = --------   (answer)
$8                100 cents      800         80
6 0
3 years ago
Other questions:
  • Is anyone able to give a step by step process to this?
    6·1 answer
  • HELP ME PLEASE ASAP​
    9·1 answer
  • the rectangular rug in jody's room is 8 1/2 feet long and 4 feet wide what is the area in square feet of jody's rug
    8·2 answers
  • how much interest is earned on a principal of $575 invested at an interest rate of 7% compounded annually for nine years?​
    5·2 answers
  • Someone plz help me 1-1\2c=6
    14·1 answer
  • a cubic block of wood is painted various colours on all sides, each side of the block has the same leng of 12 cm. thos block is
    5·1 answer
  • Find the solution of the differential equation that satisfies the given initial condition.
    10·1 answer
  • Can I get some help pls and no links pls i'm getting tired of getting links
    12·1 answer
  • The scale below represents which equation or inequality?
    7·1 answer
  • The diagram shows a solid metal cuboid.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!