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just olya [345]
3 years ago
15

Can someone help me really quick

Mathematics
1 answer:
Elena L [17]3 years ago
8 0
In your 30° - 60° - 90° triangle, the ratios of the sides are
.. PR : QR : PQ = 1 : √3 : 2

A) QR/PQ = (√3)/2 . . . . . TRUE

B) PR/PQ = 1/2, not (√3)/2 . . . . false

C) QR/PR = (√3)/1 . . . . . TRUE

D) PQ/PR = 2/1, not √3 . . . . . . .false

E) QR/PR (see C) . . . . . . . . . . .false

F) PQ/PR = 2/1 . . . . . . . .TRUE
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What is P(4 ≤ X ≤ 6)? Explain. <br> If P(X ≤ a) = 0.2, what is a? Explain.
melamori03 [73]

Answer:

(a) 0.4

(b) a = 3

Step-by-step explanation:

(a) The area under the curve from x=4 to x=6 is 0.2 units high and 2 units wide, so is 0.2·2 = 0.4. (The area of a rectangle is the product of length and width.)

(b) The area is 0.2 and the height of the curve is 0.2, so the width of the region of concern is 0.2/0.2 = 1. (Again, area = height·width, or width = area/height.) 1 unit from the left end is found at X=3, so a = 3.

4 0
3 years ago
Abby, Bik, Cari, Dawn, and Ellen collect T-shirts. Abby has the most. Bik has 2.5 times as many T-shirts as Cari. Dawn has 1/3 a
bixtya [17]
A=abby's shirts
b=bik's shirts
c=cari's shirts
d=dawn's shirts
e=ellen's shirts


a> everybody
b=2.5c
d=(1/3)c
a+b+c+d=120
e=2d+1
e=13
oook

e=13=2d+1
13=2d+1
12=2d
d=6

d=(1/3)c
6=(1/3)c
18=c

b=2.5c
b=2.5(18)
b=45

a+b+c+d=120
a+45+18+6=120
a+69=120
a=51
4 0
3 years ago
How to get a perimeter of 200
Gnom [1K]

Answer:

You could have a square with side of 50 ft.

Step-by-step explanation:

4 0
3 years ago
A circle centered at the origin has a radius of 5 units. The terminal side of an angle, , intercepts the circle in Quadrant 3 at
rodikova [14]

Answer:

sorry

Step-by-step explanation:

5 0
3 years ago
Which value of n makes the following equation true?
grin007 [14]

Answer: d. 512

Step-by-step explanation:

You need to remember that:

(\sqrt[3]{x})^3=x

Then, given the equation:

\sqrt[3]{n}=8

You can find the value of "n" that make the equation true, by solving for "n".

So, to solve for "n", you need to raise both side of the equation to power 3. Therefore, you get:

 \sqrt[3]{n}=8

 (\sqrt[3]{n})^3=(8)^3

 n=512

Then, the value of "n" that makes the equation \sqrt[3]{n}=8 true is: 512 (You can observe that this matches with the option d).

6 0
3 years ago
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