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
AleksAgata [21]
3 years ago
5

X-2(x+10)=12 need work shown

Mathematics
1 answer:
Eva8 [605]3 years ago
5 0

Answer:

x=-32

Step-by-step explanation:

expand -2(x+10): -2x-20

x-2x -20=12

add similar elements: x-2x=-x

x-20=12

add 20 to both sides

-x-20+20=12+20

simplify

-x=32  

divide both sides by -1

x=-32

You might be interested in
Variance is: Multiple Choice the average squared deviations about the mean of a distribution of values. an empirically testable
DENIUS [597]

Multiple choice answers are clearly defined as below for clarity:

A. the average squared deviations about the mean of a distribution of values.

B. an empirically testable statement that is an unproven supposition developed in order to explain certain phenomena.

C. the error made by rejecting the null hypothesis when it is true.

D. a statement that asserts the status quo; that is, any change from what has been thought to be true is due to random sampling order.

E. a statement that is the opposite of the null hypothesis

Answer:

A. The average squared deviations about the mean of a distribution of values.

Explanation:

A. the average squared deviations about the mean of a distribution of values. Correct

Standard deviation is how data is distributed around the mean. It is also the square root of the Variance. Therefore, the variance is the square of the standard deviation which is distributed around the mean.

B. an empirically testable statement that is an unproven supposition developed in order to explain certain phenomena. Incorrect

This is false as this is rather the definition for hypothesis.

C. the error made by rejecting the null hypothesis when it is true. Incorrect

This is false as this is the definition for the probability of committing a type I error

D. a statement that asserts the status quo; that is, any change from what has been thought to be true is due to random sampling order. Incorrect

This is false as this defines what a null hypothesis is.

E. a statement that is the opposite of the null hypothesis. Incorrect

The opposite of the null hypothesis is alternative hypothesis.

6 0
2 years ago
The height 'h' (in feet) of a ball in a baseball game can be modeled by h = -16t² + 28t + 8 , where 't' is the time (in seconds)
lidiya [134]

Answer:

  a)  No. t < 0 is not part of the useful domain of the function

  b) 2.0 seconds

Step-by-step explanation:

a) A graph of the function is shown below. It shows t-intercepts at t=-0.25 and t=2.0. We presume that t is measured forward from some event such as the ball being thrown or hit. The model's predicted ball location has no meaning prior to that event, when values of t are negative.

__

b) It is convenient to use a graphing calculator to find the t-intercepts. Or, the equation can be solved for h=0 any of several ways algebraically. One is by factoring.

  h = 0 = -16t² +28t +8 . . . . . . . . . . . . the ball hits the ground when h = 0

  0 = -4(4t² -7t -2) = -4(4t +1)(t -2)

This has t-intercepts where the factors are zero, at t=-1/4 and t=2.

The ball will hit the ground after 2 seconds.

4 0
3 years ago
What is 7.25 in word form
Vikentia [17]

Answer: seven and twenty-five hundredths


Step-by-step explanation:

just need to know how to say it

6 0
3 years ago
Which is a better estimate for the length of an ironing board? 1 millimeter 1 meter?
worty [1.4K]
1 meter would because 1 milimeter would be the size of your fingernail
8 0
3 years ago
Read 2 more answers
Will mark brainliest for whoever answers
8_murik_8 [283]

Answer:

i dont khow  

i guess true

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • A parabola has zeros at (5,0) and (-3,0) and passes through point (6,18) determine the axis of symmetry
    8·1 answer
  • 2c/15=8.8 Solve The Equation. What Is The Value Of "C"
    5·2 answers
  • What’s the correct answer
    14·2 answers
  • What value of n makes the equation true? -2n + 1.8 =3.2
    9·1 answer
  • Which is an expression in square units that represents the area of the shaded segment of C. Geometry
    10·1 answer
  • PEOPLESS PLEASE HELP WHAT IS 4/5 × 2/3?​
    6·1 answer
  • Mike and eat 21 hot dogs in 6 mi uses. She wants to know how many minutes it would take to eat 35 hotdogs if she can keep up the
    13·2 answers
  • This is also due today , help me please n ty
    14·1 answer
  • PLEASE HELP ME WITH THIS
    6·2 answers
  • Solve the inequality.<br> 3x+6&lt;3(x-7)
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!