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3 years ago

Having a hard time finding the area

Mathematics

1 answer:

Marina CMI [18]3 years ago

5 0

Answer:

For the triangle, the area is 7.5 in.

For the trapezoid, the area should be 90 cm

Step-by-step explanation:

The formula for a triangle is A=1/2bh and for a trapezoid it is (a+b)/2×h

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Which month has 31 days? A- October B- June C-September

Brums [2.3K]

Answer:

October

Step-by-step explanation:

because June and September have 30

days

4 0

3 years ago

Read 2 more answers

You're conducting a significance test for H0 : p = .35, Ha : p < .35. In a sample of size 40, you identify a count of 11 succ

nordsb [41]

Answer: c. –1 and .1587

Step-by-step explanation:

As per given , we have

Null hypothesis : $H_0 : p= 0.35$

Alternative hypothesis : $H_1 : p< 0.35$

Since Alternative hypothesis is left-tailed ,so the test must be a left tailed test .

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

, where p= population proportion

$\hat{p}$ = sample proportions

n= Sample size.

Let x be the number of successes.

For n= 40 and x= 11

$\hat{p}=\dfrac{x}{n}=\dfrac{11}{40}=0.275$

Then , $z=\dfrac{0.275-0.35}{\sqrt{\dfrac{0.35(1-0.35)}{40}}}$

$z=\dfrac{-0.075}{\sqrt{0.0056875}}$

$z=\dfrac{-0.075}{0.075415515645}$

$z=-0.99449031619\approx-1$

By using z-table ,

P-value for left-tailed test = P(z<-1)= 1-P(z<1) [∵ P(Z<-z)= 1-P(Z<z) ]

= 1-0.8413

=0.1587

Hence, the -score and P-value are –1 and 0.1587 .

So the correct option is c. –1 and .1587

8 0

3 years ago

Given the graph below, solve the system of equations.

goldenfox [79]

Answer:

(4, 3 )

Step-by-step explanation:

Given a system of equations graphically, then the solution is at the point of intersection of the 2 lines.

The lines intersect at (4, 3 ) ← solution

3 0

3 years ago

Using the variable x, translate the sentence into an equation. Solve the resulting equation.

Nuetrik [128]

4+x=18, the sum would make it an addition problem and x would represent "a number".

3 0

3 years ago

Question 3 Review your answers to Question 2. What happens to the coordinates of a shape when the shape reflects about the x axi

Slav-nsk [51]

Answer:

When the shape reflects about the x-axis, the x-coordinate is unchanged but the y-coordinate becomes negative. When the shape reflects about the y-axis, the y-coordinate is unchanged but the x-coordinate becomes negative.

Step-by-step explanation:

Directly from edmentum

4 0

3 years ago