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enot [183]
3 years ago
13

ASAP PLEASE! Please answer these 5 question! ONLY NEED ANSWERS! ANSWER ALL 5! NEEDS TO BE CORRECT!

Mathematics
1 answer:
4vir4ik [10]3 years ago
6 0
1. -32
2. 3/4
3. -3 3/8
4. -2 5/12
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PLEASE HELP
pogonyaev

Answer:

b and c

Step-by-step explanation:

both slopes are 2/3

6 0
3 years ago
Last year, lien earned 1200 more than her husband. Together they earned 45,200. How much did each of them earn?
d1i1m1o1n [39]

Answer:

Lien earned $23,800

Husband earned $22,600

Step-by-step explanation:

$45,200 divide it by 2 = $22,600

then you add $1,200 to $22,600 and get  $23,800

4 0
4 years ago
A safety officer wants to prove that μ = the average speed of cars driven by a school is less than 25 mph. Suppose that a random
Akimi4 [234]

Answer:

t=\frac{24-25}{\frac{2.2}{\sqrt{14}}}=-1.70    

The degrees of freedom are given by:

df=n-1=14-1=13  

The p value for this case would be given by:

p_v =P(t_{(13)}  

Step-by-step explanation:

Information given

\bar X=24 represent the mean height for the sample  

s=2.2 represent the sample standard deviation

n=14 sample size  

\mu_o =25 represent the value that we want to test

t would represent the statistic

p_v represent the p value for the test

Hypothesis to verify

We want to cehck if the true mean is lees than 25 mph, the system of hypothesis would be:  

Null hypothesis:\mu \geq 25  

Alternative hypothesis:\mu < 25  

The statistic would be given by:

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

Replacing the info given we got:

t=\frac{24-25}{\frac{2.2}{\sqrt{14}}}=-1.70    

The degrees of freedom are given by:

df=n-1=14-1=13  

The p value for this case would be given by:

p_v =P(t_{(13)}  

8 0
3 years ago
S=3.2yd<br> A=square <br><br> Find the area
wlad13 [49]

since a square must be the same length on all sides to be a correct square, you can legit just multiply the length of one side times four to get the area.

3.2 x 4 = 12.6
8 0
3 years ago
Due tomarrow please help!!!!!!!!!!!!!!!!!!!!!!!!!  Identify the independent and dependent variables in the following statement.
BlackZzzverrR [31]
The independent variable is the variable that is being changed. In this statement, it would be water flowing flowing in the pool. The dependent variable is what is being changed so that would be the depth of the water.

There, I hope this helps! :)

6 0
3 years ago
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