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
Valentin [98]
3 years ago
13

Urgent please help me

Mathematics
1 answer:
Leviafan [203]3 years ago
6 0

Answer:

z=4√5

Step-by-step explanation:

use the Pythagorean theorem to set up a system of equations. a^2 + b^2 = c^2

16+4= 20

20^2 = x^2 + z^2 400=x^2 + z^2 x^2=400-z^2

z^2 = 4^2 + y^2 z^2 = 16 + y^2

x^2 = 16^2 + y^2 x^2 = 256 + y^2 y^2=x^2-256

z^2=16+x^2-256

z^2=16+400-z^2-256

z^2=160-z^2

2z^2=160

z^2=80

z= √80 =4√5

You might be interested in
Ordered pair for 3x + 5y = 2 <br><br> 9x + 11y = 14
Brums [2.3K]

Answer:

Step-by-step explanation:

-9x - 15y = -6

9x + 11y = 14

-4y = 8

y = -2

3x - 10 = 2

3x = 12

x = 4

(4, -2)

8 0
3 years ago
Read 2 more answers
1. How many variables are involved in the chi-square test?
GarryVolchara [31]

The result of the respective questions are:

  • This chi-square test only takes into consideration one variable.
  • The  type of chi-square test this is is a Goodness of Fit
  • df= 3
  • NO

<h3>How many variables are involved in the chi-square test?</h3>

a)

This chi-square test only takes into consideration one variable.

b)

The  type of chi-square test this is, is a Goodness of Fit

To test the hypothesis, we must determine whether the actual data conform to the assumed distribution.

The "Goodness-of-Fit" test is a statistical hypothesis test that determines how well the data that was seen resembles the data that was predicted.

c)

Parameter

n = 4

Therefore

Degrees of freedom

df= n - 1

df= 4 - 1

df= 3

d)

In conclusion

Parameters

\alpha = 0.05

df = 3

Hence

Critical value = 7.814728

Test statistic = 6.6

Test statistic < Critical value, .

NO, the result of this test is not statistically significant.

Read more about Probability

brainly.com/question/11234923

#SPJ1

3 0
2 years ago
8a – 6+2=-7+ 7a solve the
Kisachek [45]

A = -3

8a-6+2=-7+7a

Add 2 to -6

8a-4=-7+7a

Subtract 7a from 8a

Add 4 to -7

Then you get

A= -3

7 0
3 years ago
If I wanted to estimate the √99, the first step would be to find the two squares that 99 lies on the numberline. I could then th
____ [38]

Answer:

Step-by-step explanation:

Smaller perfect squares near 99 is 81

Larger perfect square near 99 is 100

First step would be to find the two perfect squares that lies between on the number line. I could then think about the number 99 and how close it is to the smaller perfect square and the larger perfect square. That could tell me how far above or below the of the two perfect squares 99 lies on the number line. I could then take the square root of the perfect squares to see how I would estimate the square root of 99. The √99 is almost 10.

81 < 99 < 100

√81 < √99  < √100

8 < √99 < 10

So, √99 is almost 10.

8 0
1 year ago
Read 2 more answers
The function y varies jointly as x and z, and y = 24 when x = 4 and z = 18. What is the value of when x = 15 and z = 10?
svlad2 [7]

Answer:

0.3

Step-by-step explanation:

5 0
4 years ago
Other questions:
  • I need help ASAP please answer quickly
    10·1 answer
  • Javia ran 8 laps around the a track to run a total of 1 mile on Monday. How many laps will she need to run on Tuesday to rin 3/8
    6·1 answer
  • The sum of two numbers are 26 and their difference is 8 what is the larger number
    7·1 answer
  • What is 1,200/2,000 in a fraction
    5·1 answer
  • A map has a scale of 1cm to 17km. If Johnstown and San Jose are 204 km apart, then they are how far apart on the map?
    11·1 answer
  • What is the slope of the equation 2x+3y=10?
    10·2 answers
  • Melinda and her husband are purchasing a home. The cost of the home is $135,500. They will be required to pay a down payment of
    7·1 answer
  • Find the equation of the line..<br><br> y= x+ <br><br> khan academy
    14·1 answer
  • 3. Find the length of the missing side using the Pythagorean Theorem. Round to the nearest tenth if necessary.
    8·1 answer
  • Find the equation of the line. Use exact numbers.<br><br> y = ?x + ?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!