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
Tamiku [17]
2 years ago
9

4x-8=2x-10 slove for x

Mathematics
1 answer:
aev [14]2 years ago
4 0

Step-by-step explanation:

4x - 8 = 2x - 10

4x - 2x = -10 + 8

2x = -2

2x/2 = -2/2

x = -1

You might be interested in
Someone help with this​
Fantom [35]

Step-by-step explanation:

6x2 - x + 3 - (-5x2 + 10x - 1)

6x2 - x + 3 + 5x2 - 10x + 1

Solving like terms

11x2 - 11x + 4

5 0
3 years ago
free 50 and for those who are missing out i've been giving away 50 and 100 points almost all day i'm still doing it two
Flura [38]
Thank you so much!!! :)
4 0
3 years ago
Read 2 more answers
Given O below, If AB and BC are congruent, what is the measure of chord BC?
zhuklara [117]
Since, AB and BC are the same length, the measure of the chord for BC would be 12.5 units
3 0
3 years ago
Read 2 more answers
The mean finish time for a yearly amateur auto race was 186.32 minutes with a standard deviation of 0.305 minute. The winning​ c
uranmaximum [27]

Complete Question

The mean finish time for a yearly amateur auto race was 186.94 minutes with a standard deviation of 0.305 minute. The winning car, driven by Roger, finished in 185.85 minutes. The previous year's race had a mean finishing time of 110.7 with a standard deviation of 0.115 minute. The winning car that year, driven by Karen, finished in 110.48 minutes.

Find their respective z-scores.

 Who had the more convincing victory?

A. Roger​ had a more convincing victory because of a higher z-score.

B. Karen a more convincing victory because of a higher z-score.

C. Roger had a more convincing victory, because of a lower z-score.

D. Karen a more convincing victory because of a lower z-score.

Answer:

The correct option is  D

Step-by-step explanation:

From the question we are told that

  The mean of the current year  is  \mu_c =  186.32 \  minutes

   The standard deviation is  \sigma_c  =  0.305 \  minutes

   The time taken by  the winning car for the current year  is  x =  185.85 \ minutes

  The mean of the previous  year  is  \mu_p =  110.7 \  minutes

   The standard deviation the previous  year  is  \sigma_p  = 0.115  \  minutes

 The time taken by  the winning car for the previous year  is  y =   110.48 \ minutes    

Generally the z-score for current year is mathematically evaluated as

     z_c  =  \frac{x- \mu_c}{\sigma_c }

=>     z_c  =  \frac{ 185.85- 186.32}{0.305 }

=> z_c  = -1.536

Generally the z-score for previous year is mathematically evaluated as

     z_p  =  \frac{y- \mu_p}{\sigma_p }

=>     z_p  =  \frac{ 110.48-110.7}{0.115  }

=> z_p  = -1.913

From the value obtained we see that  z_p  <  z_c , Hence  Karen had a more convincing victory because of the lower z -score.

5 0
2 years ago
A train 360 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long?.
natali 33 [55]

The train will pass a bridge in 40 seconds.

<h3>What is the distance?</h3>

Distance is defined as the product of speed and time.

Given that A train 360 m long is running at a speed of 45 km/hr.

Speed of train = 45 km/hr.

And it passes a bridge 140 m long.

Length of train = 360 meters

Since 1 km = 1000 meters.

and 1 hour = 3600 seconds

we have to determine the length of the train

So 1(km/hr.) = (1000/3600) = (26/72) meter/seconds

45 km/hr = 45 ×5/18 = 25/2 meter per second

So the speed of the train = 25/2 meters per second

Total distance to be covered = (360+140)m = 500m.

So time will it pass a bridge = distance/speed

Substitute the values of distance and speed in the above formula,

⇒ 500/(25/2)

⇒ 500×2/25

⇒ 40 seconds

Hence, the train will pass a bridge in 40 seconds.

Learn more about the distance here:

brainly.com/question/13269893

#SPJ4

8 0
2 years ago
Other questions:
  • The scatterplot that represents the monthly values of stock QRS has an r
    10·1 answer
  • A laptop cost $450 more than a camera. Mr Bala paid $2400 for 2 such laptops and 1 such camera. Mr Kumar bought 1 such laptop an
    12·1 answer
  • A photo studio is going to display a portrait in their lobby. The portrait is being re-produced from a photo with dimensions 6in
    7·1 answer
  • Estimate the solution for 632.97
    8·1 answer
  • I need help in mathematics
    5·1 answer
  • The length of a rectangle is four times the width. If the area of the rectangle is 36
    6·1 answer
  • Solve for the perimeter and keep it in pi
    7·1 answer
  • Write a word problem for 8x - 5 = 40
    15·2 answers
  • 8x10x32divided by 19 +1000000000x329568453=
    12·1 answer
  • Figure JKLM is a parallelogram. The measures of line segments MT and TK are shown.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!