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
ki77a [65]
3 years ago
6

Need some help, thanks :)

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
7 0

7 is equal to x, so yeah


You might be interested in
Find the missing angle measure.<br><br> m
Alexeev081 [22]

Answer:43 degrees

Step-by-step explanation: 47+90=137 and 180-137= 43

5 0
2 years ago
Read 2 more answers
The water diet requires you to drink two cups of water every half hour from the time you get up until you go to bed, but otherwi
Elan Coil [88]

Answer:

7-3.182 \frac{13.638}{\sqrt{4}}= -14.698

7+3.182 \frac{13.638}{\sqrt{4}}= 28.698

Step-by-step explanation:

For this case we have the following info given:

Weight before diet 180 125 240 150  

Weight after diet 170 130 215 152

We define the random variable D = before-after and we can calculate the inidividual values:

D: 10, -5, 25, -2

And we can calculate the mean with this formula:

\bar X= \frac{\sum_{i=1}^n X_i}{n}

And the deviation with:

s= \sqrt{\frac{\sum_{i=1}^n (X_i- \bar X)^2}{n-1}}

And after replace we got:

\bar D= 7, s_d = 13.638

And the confidence interval for this case would be given by:

\bar D \pm t_{\alpha/2} \frac{s_d}{\sqrt{n}}

The degrees of freedom are given by:

df = n-1= 4-1=3

For the 95% of confidence the value for the significance is \alpha=0.05 and the critical value would be t_{\alpha/2}= 3.182. And replacing we got:

7-3.182 \frac{13.638}{\sqrt{4}}= -14.698

7+3.182 \frac{13.638}{\sqrt{4}}= 28.698

6 0
3 years ago
In a card game, a player earns -5 points for each red card drawn. If the player has a score of -20, how many red cards has the p
Margaret [11]

Answer:

4

Step-by-step explanation:

-20/-5=4

7 0
3 years ago
Read 2 more answers
Find the values of x, y, and z. Round to the nearest tenth, if necessary.
bixtya [17]

Answer:

Step-by-step explanation:

6 0
2 years ago
What is 2 plus 2 also what is the square root of 500
disa [49]

2+2=4 and the square root of 500 is 22.360679775

4 0
3 years ago
Read 2 more answers
Other questions:
  • The value of 8 in 8,596 is how many times the value of 8 in 975?
    5·1 answer
  • Write a word phrase to represent the algebraic expressions 2x + 4
    6·2 answers
  • What is the value of the function y = 3x - 1 when x = –1?
    9·2 answers
  • What two numbers plus 35 equal 180
    5·2 answers
  • Bruce drew a scale drawing of a house and its lot. The house's driveway, which is 17 feet
    11·1 answer
  • What is the approximate circumference of a circle that has a radius of 10 centimeters? (Use 3.14 for ). C=__ cm​
    14·2 answers
  • Using the expression 7x - 5, find the value when x is 3.
    14·2 answers
  • Find the equation of the line that passes through (-2,-3) and is parallel to 3x+2y=5
    11·1 answer
  • Find the coordinates of the midpoint of a segment with the given endpoints.
    5·1 answer
  • Quick algebra 1 question for 10 points!
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!