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
gtnhenbr [62]
2 years ago
14

Ter

Mathematics
1 answer:
BigorU [14]2 years ago
5 0

Answer:

18 Pounds

Step-by-step explanation:

Variable: s=how much you sister weighs

One equation would be:

94 - s = 112

You then have to isolate the variable by subtracting 94 from each side to get:

s=18

I don't if I explained it that well.

You might be interested in
Solve the formula for the indicated variable.<br> A = 4πr² for r when r &gt; 0<br><br> r =
SashulF [63]

Answer:

√(A/4π) = r

Step-by-step explanation:

A = 4πr²

r² = A/4π

r = √(A/4π)

8 0
3 years ago
Read 2 more answers
Look at pic for question and answer choices.
Doss [256]
The answer would b the 3rd option
7 0
2 years ago
It is claimed that automobiles are driven on average more than 20,000 kilometers per year. To test this claim, 100 randomly sele
kow [346]

Answer:

t=\frac{23500-20000}{\frac{3900}{\sqrt{100}}}=8.974      

p_v =P(t_{99}>8.974)=9.43x10^{-15}  

If we compare the p value and the significance level given for example \alpha=0.05 we see that p_v so we can conclude that we to reject the null hypothesis, and the actual mean is significantly higher than 20000.      

Step-by-step explanation:

1) Data given and notation      

\bar X=23500 represent the sample mean  

s=3900 represent the sample standard deviation      

n=100 sample size      

\mu_o =2000 represent the value that we want to test    

\alpha represent the significance level for the hypothesis test.    

t would represent the statistic (variable of interest)      

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.      

We need to conduct a hypothesis in order to determine if the true mean is higher than 20000, the system of hypothesis would be:      

Null hypothesis:\mu \leq 2000      

Alternative hypothesis:\mu > 2000      

We don't know the population deviation, so for this case is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:      

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}} (1)      

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Calculate the statistic      

We can replace in formula (1) the info given like this:      

t=\frac{23500-20000}{\frac{3900}{\sqrt{100}}}=8.974      

Calculate the P-value      

First we need to calculate the degrees of freedom given by:  

df=n-1=100-1=99  

Since is a one-side upper test the p value would be:      

p_v =P(t_{99}>8.974)=9.43x10^{-15}  

Conclusion      

If we compare the p value and the significance level given for example \alpha=0.05 we see that p_v so we can conclude that we to reject the null hypothesis, and the actual mean is significantly higher than 20000.      

8 0
2 years ago
Mark practices his guitar 3/4 hours each day. How many hours does he practice in seven days?
Mashutka [201]
3/4 *7
or
0.75*7
The answer is 5.25
6 0
3 years ago
Besides Spanish what other languages spoken in the northern part of Spain
Sphinxa [80]

They speak Clinician, Basque, Aranès, and Catalan.

4 0
3 years ago
Other questions:
  • Drake has 3 Grammy wins and little Wayne has 5 Grammy wins. select all proportional relationships tat have the same ratio to tha
    12·1 answer
  • A baker uses 2/3 of a canister of flour to bake 4 loaves of bread. How much flour does the baker use to bake 3 loaves of bread?
    14·1 answer
  • Artemis has six boards cut in various lengths as shown she wants to use three of them to frame a triangular window in her new cl
    8·1 answer
  • If Frances can paint 1/3 of a wall in 20 minutes, how long will it take her to paint a room with 4 walls.
    7·2 answers
  • PLZ HELP URGETLY!!!!!!!!Let u = 14. What is the value of 4u? A. 10 B. 18 C. 56 D. 144
    15·1 answer
  • (2,-3) and (4,-3) determine the equation
    8·2 answers
  • Select the correct answer. The triangles in the diagram are congruent. If mF = 40°, mA = 80°, and mG = 60°, what is mB? A. 40° B
    13·2 answers
  • Can someone tell me what a linear function is? Sorry, I'm just really confused. Whoever replies first will get marked Brainliest
    11·2 answers
  • Dan made 85% of his free throws. If he took 45 shots how many did he make?
    7·2 answers
  • Please solve the question in the picture​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!