Sooooooooooooooooooooooooooooo easy

Select the term that does not describe the triangle. Select all that apply.

LenaWriter [7]

Answer: I believe its obtuse

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

The cost of renting a canoe to use on River Y costs $41. The cost of renting a canoe to use on River Z costs $4 per hour plus

umka2103 [35]

Answer:

see the attachment

7 hours

Step-by-step explanation:

The cost for River Y is a constant (not dependent upon hours), so is c = 41.

The cost for River Z is the sum of the deposit and the hourly cost, so is ...

c = 13+4n

These equations and their graphs are shown in the attachment. The graphs cross where n=7, indicating you have to rent a canoe for 7 hours for the cost to be the same on both rivers.

6 0

3 years ago

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The cartesian coordinates of a point are given. find polar coordinares of the point where r<0 and

Ad libitum [116K]

Find the polar coordinates in the usual way, then negate r and add 180° to θ.

You know that

... r = √(x² + y²)

... θ = arctan(y/x) . . . . . taking quadrant into account

The coordinates (r, θ) and (-r, θ+180°) specify the same point.

8 0

3 years ago

A true/false test has 8080 questions. Suppose a passing grade is 5252 or more correct answers. Test the claim that a student kn

Makovka662 [10]

<h2>Answer with explanation:</h2>

Let p be the proportion of the correct answers.

As per given , we have

$H_0: p=0.50$

$H_a: p>0.50$ , since the alternative hypothesis is right tailed , so the test is a one -tailed test.

If the student gets 52 answers correct out of 80.

i.e. the proportion of correct answers : $\dfrac{52}{80}=0.65$

Test statistic : $z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

$z=\dfrac{0.65-0.50}{\sqrt{\dfrac{0.50(0.50)}{80}}}\approx2.68$

P-value : $P(z>2.68)=0.0037$ [ by using p-value table for z (right-tailed)]

Since the p-value(0.0037) is less than the significance level (0.05), so we reject the null hypothesis.

Results : We have enough evidence to support the claim that a student knows more than half of the answers and is not just guessing.

8 0

4 years ago

What is the solution to the system? x + y = 4 x+y=1

Lelechka [254]

Given :

x + y = 4
x + y = 1

To Find :

The value of x and y.

Answer :

x + y = 4 ....[Equation (i)]
x + y = 1......[Equation (ii)]

Adding eqⁿ (ii) and eqⁿ (i) we get :

→ x + y + x - y = 4 + 1

→ 2x = 5

→ x = 5/2

→ x = 2.5

Now, put the value of x = 5/2 in eqⁿ (i) we get :

→ x + y = 4

→ 5/2 + y = 4

→ y = 4 - 5/2

→ y = 1.5

4 0

3 years ago