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BabaBlast [244]
1 year ago
13

Khan Academy Question

Mathematics
1 answer:
Mama L [17]1 year ago
4 0

Answer:

84

Step-by-step explanation:

Since we are given line OP perpendicular to line DR, then angles PDR and ODR are right angles.

Angles PDA and ADR are complementary.

Angles ODU and UDR are complementary.

Angles ADR and UDR are given as congruent.

We can conclude that angles PDA and ODU are congruent.

By AA Similarity, triangles APD and UMD are similar.

DP/DM = PA/MU

3.75/10 = 4.5/MU

3.75MU = 10 × 4.5

MU = 12 (altitude of triangle DUO)

OD = OM + MD =  4 + 10 = 14 (base of triangle DUO)

area = base × height / 2

area = 14 × 12 / 2

area = 84

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Aliun [14]

Answer:

(2,5)

Step-by-step explanation:

it's (2,5) just to let you now

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Given the following information, find the length of the missing side. Leave your answer as a simplified radical.
andreev551 [17]

Answer:

2√3

Step-by-step explanation:

Given the following information,

Long = 3 = Adjacent

Angle of elevation =30 degrees

Required

Hypotenuse

Using SOH CAH TOA identity

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Cos 30 = 3/hyp

hyp = 3/cos30

hyp = 3/√3/2

hyp = 3* 2/√3

hyp = 6/√3

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8 0
3 years ago
Both angle A &amp; B are supplementary. If angle A is x and angle B is 3x, then what is x equal to AND what does angle B equal?
ryzh [129]

Answer:

A= 45 degrees

And angle B= = 135 degrees

Step-by-step explanation:

Supplementary means that the sum of both angles is equal to 180 degrees.

< A= x

< B= 3x

<a+<B= 180

x+3x= 180

4x= 180

x= 180/4

x= 45

Therefore angle A= 45 degrees

And angle B= 3x= 3*45= 135 degrees

7 0
2 years ago
PLEASE HELP: Find f(-2) for f(x) = 2 • 3x
xenn [34]

Answer:

I think it's D. \frac{2}{9}

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6 0
2 years ago
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