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
lara [203]
3 years ago
6

I need help on 5 please help fast

Mathematics
2 answers:
djyliett [7]3 years ago
8 0
 the correct answer is 83.

yyyyyeeeeeeaaaahhhhhh bbbbooooiii
marysya [2.9K]3 years ago
6 0
The equation you would use is 
mean= Test1+test2+test3+test4+test5+Test6+x/Total number of tests

so 83=89+78+69+81+89+90+X/7
First mutiple both sides by 7 so 
581=496+X
you then substract the 496 and get 85
so she would need a 85 on the 7th test
You might be interested in
What are the solutions to 2x^2-4x-30=0
oksano4ka [1.4K]

Answer:

ill try  2x2-4x-30=0  

Two solutions were found :

x = 5

x = -3

Step by step solution :

Step  1  :

Equation at the end of step  1  :

 (2x2 -  4x) -  30  = 0

5 0
3 years ago
A mean equal to 5 cm. A simple random sample of wrist breadths of 40 women has a mean of 5.07
neonofarm [45]

Answer:

The value of the test statistic is z = 1.34

Step-by-step explanation:

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

Test if the mean is equal to 5:

This means that the null hypothesis is \mu = 5

A simple random sample of wrist breadths of 40 women has a mean of 5.07 cm. The population standard deviation is 0.33 cm.

This means that n = 40, X = 5.07, \sigma = 0.33

Find the value of the test statistic?

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{5.07 - 5}{\frac{0.33}{\sqrt{40}}}

z = 1.34

The value of the test statistic is z = 1.34

5 0
3 years ago
Given: a and c are vertical angles prove: a =~ cl
jeyben [28]

Answer:

what do i have to answer?

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Determine a limit for a piecewise function
laila [671]

The limit for the given piecewise function does not exist(DNE).

4th option is correct.

<h3 /><h3>What is the limit of a function?</h3>

In mathematics, limits are the points at which a function approaches the output for the specified input values. Calculus and mathematical analysis depend heavily on limits, which are required to determine integrals, derivatives, and continuity. It is applied during the analysis process and always focuses on the function's behavior at a certain time.

Unique real numbers are limits in mathematics.

According to the question,

Left hand limit of the function= -5(3)+4 = -15+4 = -11

Right hand limit of the function= (3)(3)+2 = 11

As the left and right-hand limits are not equal. Thus, the limit of the function does not exist.

Learn more about limits here:

brainly.com/question/23935467

#SPJ1

8 0
2 years ago
I need help with solving for number 5
Vikentia [17]
2(-2x+4)= -6x+12. ---> -4x+8= -6x+12 ---> combine like terms so +4x to -6x to get 8= -2x+12 ---> -12 on both sides to get -4= -2x --> divide both sides by -2 to get 2= x
5 0
4 years ago
Other questions:
  • If the diameter of the circle is 11 inches, then the radius will be _____ inches.
    12·1 answer
  • are there less than i million excalty 1 million or greater than 1 million miligrams i 1 kilograms explain how u know
    13·1 answer
  • -5(x + 1) = -3(2x - 2)
    12·2 answers
  • HELP PLEASE???<br> ?????<br> ????<br> ???
    10·1 answer
  • ?????????????????????????????))???
    8·1 answer
  • SOMEONE PLZ HELP ME!!!!
    13·1 answer
  • On a coordinate grid, point R is at (−6, 2) and point S is at (8, 2). The distance (in units) between points R and S is ______.
    12·1 answer
  • Y= 4/5 x-7 what are the y and x intercepts?
    6·1 answer
  • 8x+5y=35 solve for y no work needed but you can show me the work if you want i will still look at it thank you in advance
    9·2 answers
  • What is the volume of this figure?<br><br> Enter your answer in the box.<br><br> yd³
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!