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matrenka [14]
3 years ago
5

(PRECALC) I need help on this one plz ❤️❤️❤️ help a girl out & the favor will be returned

Mathematics
1 answer:
tia_tia [17]3 years ago
7 0

Answer:

The coordinates of the P' point are (-17.3,-10).

Step-by-step explanation:

We can use the components of the vector from 0 to P point. We know that the diameter is 40 meters, so the magnitude of the vector will be 20 m.

Now, the angle from the negative x-direction to the vector is 210°-180° = 30°.

The x-component of the vector will be:

V_{x}=-Vcos(30)

V_{x}=-20cos(30)=-17.32\: m

It is negative because the component is in the negative x-direction.

The y-component of the vector will be:

V_{y}=-Vsin(30)

V_{y}=-20sin(30)=-10\: m

It is negative too because the component is in the negative y-direction.

Therefore, the coordinates of the P' point are P'(-17.3,-10)

I hope it helps you!

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Help ill Mark brainlist :)
Marianna [84]

Answer:

The area would be 40.5 cm ^2

Step-by-step explanation:

Well first you don’t gotta worry about some isosceles trapezoid thingy.

You just gotta know the formula for a trapezoid is (b1+b2)/2)h

B1 in this case is or base 1 (9 or 4.5)

b2 in this case is or base 2 (9 or 4.5)

(you can only choose one base for each)

ANd you add those 2 up and you’d get 13.5

13.5/2 which is 6.75

Now we multiply it by the height which is 6 and gte 40.5

40.5cm ^2 is the final answer

6 0
3 years ago
A test is made of H subscript 0 colon space mu space equals space 43 space space v e r s u s space space H subscript 1 colon spa
sweet [91]

Answer:

The calculated value Z = 1.39 <1.96 at 0.05 level of significance

The null hypothesis is accepted

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the mean of the Population = 43

Given that the mean of the sample = 47

Given that the standard deviation of the Population = 25

Given that the sample size 'n' = 76

<u><em>Step(ii):-</em></u>

<u><em>Null hypothesis:H₀: μ = 43</em></u>

<u><em>Alternative Hypothesis: H₁: μ ≠ 43</em></u>

Test statistic

           Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }

          Z = \frac{47-43 }{\frac{25}{\sqrt{76} } }

          Z = 1.39

Level of significance = 0.05

The critical value = 1.96

<u><em>Final answer:-</em></u>

<em>The calculated value Z = 1.39 <1.96 at 0.05 level of significance</em>

<em>The null hypothesis is accepted </em>

4 0
2 years ago
Is i have 5 red marbles, 2 green and 3 blue, what is the probability of drawing two blue marbles in a row?
kherson [118]
So the chance of getting 1 blue marble is 30% or 3/10, the chance of getting another in a row is also 3/10 since its asking for both youd do 3/10*3/10 = 9/100
4 0
3 years ago
What kind of graph is shown below?
Lemur [1.5K]

Answer:

c

Step-by-step explanation:

6 0
2 years ago
Are the following figures similar?
aalyn [17]

a no the corresponding angles are not congruent

∠A ≠ ∠E and ∠D ≠ ∠H


8 0
3 years ago
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