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
stich3 [128]
3 years ago
5

Solve the equation. Justify each step. I need help pls :/

Mathematics
1 answer:
olga_2 [115]3 years ago
3 0

Answer:

x=1/4

Step-by-step explanation:

x+1/2=3/4

group like terms

x=3/4-1/2

x=1/4

You might be interested in
A random sample of 49 statistics examinations was taken. the average score, in the sample, was 84 with a variance of 12.25. the
tester [92]

Since in this case we are only using the variance of the sample and not the variance of the real population, therefore we use the t statistic. The formula for the confidence interval is:

<span>CI = X ± t * s / sqrt(n)                      ---> 1</span>

Where,

X = the sample mean = 84

t = the t score which is obtained in the standard distribution tables at 95% confidence level

s = sample variance = 12.25

n = number of samples = 49

From the table at 95% confidence interval and degrees of freedom of 48 (DOF = n -1), the value of t is around:

t = 1.68

 

Therefore substituting the given values to equation 1:

CI = 84 ± 1.68 * 12.25 / sqrt(49)

CI = 84 ± 2.94

CI = 81.06, 86.94

 

<span>Therefore at 95% confidence level, the scores is from 81 to 87.</span>

6 0
3 years ago
Simplify <br> (1/2k) (4k) + 12 <br><br> 2k 2 + 12<br> 14k 2<br> 2k + 12<br> 14k
Lady bird [3.3K]

Answer:

(1/2) (4k) + 12 = 2k + 12

7 0
4 years ago
What two numbers multipled get -48 and when added get 8?
Katarina [22]
X * y = -48
x + y = 8

y = -48/x

x -48/x = 8
x^2 - 48 = 8x
x^2 - 8x -48 = 0
x = 12
y = -4

5 0
3 years ago
1. Identify the base and the exponent in the expression 10^15
JulsSmile [24]

Answer:

Base is 10, exponent is 15

Step-by-step explanation:


3 0
3 years ago
Allyson Greve has calculated her federal taxable income to be $45,300. She pays a state income tax rate of 3% on her federal tax
valentinak56 [21]

Answer:

1,359

Step-by-step explanation:

3% of 45,300 is 1,359

4 0
3 years ago
Other questions:
  • 20 POINTS ASAP The graphed line can be expressed by which equation? Math item stem image y+3=32(x+1) y−0=−32(x+1) y−3=32(x−1) y−
    8·2 answers
  • the length of a rectangle is 8in. more than it’s width. the perimeter of the rectangle is 24in. what are the width and length of
    7·1 answer
  • Can someone pls help me with this thanks
    8·1 answer
  • Melinda is running in gym class. She has 45 minutes and needs to run 6 miles. Write an inequality to find the amount of time she
    5·1 answer
  • A jet plane traveling at 550 mph overtakes a propeller plane traveling at 150 mph that had a 3​-hour head start. How far from th
    7·1 answer
  • Find HG and HI. Pleaseeee help :/
    8·1 answer
  • Differentiate between interest and interest rate​
    12·1 answer
  • The length of a rectangle field is represented by the expression 14 X minus 3X squared +2 Y. The width of the field is represent
    11·1 answer
  • 9(a+2)=9 <br> con comprobación plisss!!
    9·1 answer
  • A rectangular swimming pool with length b and width h is surrounded by a walkway that is 3 feet wide. Which equation below could
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!