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Vaselesa [24]
2 years ago
10

The top one is right!

Mathematics
1 answer:
Gnesinka [82]2 years ago
6 0

Answer:

alright then thx for the points im doing alot of give aways get there first you win max points rewarded as well so be quick everyones trying to get them

Step-by-step explanation:

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Multiply and simplify (4x-2)(3x^2-2x+1) Write answer in standard form
hjlf

Answer:

<h3>12<em>x</em>^3 - 14<em>x</em>^2 + 8<em>x</em> - 2</h3>

7 0
2 years ago
Read 2 more answers
If two events have probabilities which sum to 1, they are called _ _ _ _ _ _ _ _ _ _ _ _ _ events​
Tom [10]

Answer:

An event with probability 0 never occurs. An event with probability 1 occurs on every trial

Step-by-step explanation:

3 0
3 years ago
Test the claim that the proportion of people who own cats is larger than 40% at the 0.025 significance level. The null and alter
Alecsey [184]

Answer:

H 0 : p ≤ 0.4 H a : p > 0.4

And based on the alternative hypothesis we can conclude that we have a right tailed test

Step-by-step explanation:

Data given

n=300 represent the random sample size

\hat p=0.45 estimated proportion of people with cats

p_o=0.40 is the value that we want to test

\alpha=0.025 represent the significance level

z would represent the statistic

p_v represent the p value

Null and alternative hypothesis

We want to test if the true proportion of people with cats is higher than 0.4, so then the best alternative is:  

Null hypothesis:p\leq 0.4  

Alternative hypothesis:p > 0.4  

H 0 : p ≤ 0.4 H a : p > 0.4

And based on the alternative hypothesis we can conclude that we have a right tailed test

The statistic is given by:  

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

Replacing we got:

z=\frac{0.45 -0.4}{\sqrt{\frac{0.4(1-0.4)}{300}}}=1.768  

5 0
2 years ago
Please help question in the picture
Natalka [10]

Answer: use the Pythagorean theorem a2+b2=c2 substitute the numbers in

7 squared + 3 squared = c squared so 7x7=49 and 3x3=9 add 49 and 9 which equals square root of 58 since that is not a perfect square you take square root of 58 and you simplify and that gives you 7.62

Step-by-step explanation:

I showed on top

5 0
3 years ago
Find the value of x and y. Need some help solving this one.
Oksi-84 [34.3K]

Answer: x is 45, y is 80

Step-by-step explanation:

subtract the angles surrounding x (70 - 25 = 45)

add 45 + 55 to get 100
the entire triangle has to equal 180 degrees, so subtract 100 from 180 to get the value of y

8 0
2 years ago
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