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wolverine [178]
1 year ago
7

In the 30-60-90 triangle below, side s has a length of

Mathematics
1 answer:
mario62 [17]1 year ago
7 0

Answer:

4, 4√3

Step-by-step explanation:

In a 30-60-90 triangle:

The leg opposite of the 30-degree angle is 1/2 of the hypotenuse: 8/2 = 4

The longer leg is √3 times the shorter leg: 4*√3 = 4√3

Check work: 4^2+(4√3)^2 = 8^2 --> 16+48 = 64 --> 64 = 64

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alisha [4.7K]

D'=(-4,2)
E'=(-1,1)
F'=(1,5)

Hope it heled.

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Here are the rotation rules: 90° clockwise rotation: (x,y) becomes (y,-x) 90° counterclockwise rotation: (x,y) becomes (-y,x) 180° clockwise and counterclockwise rotation: (x, y) becomes (-x,-y)

5 0
2 years ago
Please help me its due in 3 minutes please no links I just need the answer please.
djyliett [7]

Answer:

The answer is .9.

Step-by-step explanation:

Steps Ex. 1 Ex. 2

Round a number to the nearest tenth 3.14 .883

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6 0
2 years ago
Read 2 more answers
Algebra 2 help please
Lynna [10]

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6 0
3 years ago
The sum of three numbers in <br> g.p. is 21 and the sum of their squares is 189. find the numbers.
sashaice [31]
Let the three gp be a, ar and ar^2
a + ar + ar^2 = 21 => a(1 + r + r^2) = 21 . . . (1)
a^2 + a^2r^2 + a^2r^4 = 189 => a^2(1 + r^2 + r^4) = 189 . . . (2)
squaring (1) gives
a^2(1 + r + r^2)^2 = 441 . . . (3)
(3) ÷ (2) => (1 + r + r^2)^2 / (1 + r^2 + r^4) = 441/189 = 7/3
3(1 + r + r^2)^2 = 7(1 + r^2 + r^4)
3(r^4 + 2r^3 + 3r^2 + 2r + 1) = 7(1 + r^2 + r^4)
3r^4 + 6r^3 + 9r^2 + 6r + 3 = 7 + 7r^2 + 7r^4
4r^4 - 6r^3 - 2r^2 - 6r + 4 = 0
r = 1/2 or r = 2
From (1), a = 21/(1 + r + r^2)
When r = 2:
a = 21/(1 + 2 + 4) = 21/7 = 3
Therefore, the numbers are 3, 6 and 12.
3 0
3 years ago
Holly and her two best friends go to dinner the total bill is $31.84 they use a coupon for 15% off the total if they split the b
Leno4ka [110]
The bill after applying the coupon = 31.84*(85%) = 27.064

so each of them will pay : 27.064/3 = $9.021
3 0
3 years ago
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