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sattari [20]
2 years ago
9

Please help me with this question!!!! I REALLY NEED HELP!

Mathematics
1 answer:
Burka [1]2 years ago
7 0
Answer : 19

Explanation:

P = 7 + BR + QR

But BR = RC = 6

And QR = 1/2 AC (QR is the midsegment of triangle ABC)

QR = 1/2 x 12 = 6

P = 7 + 6 + 6
P = 19
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A 70-foot wire attached to the top of a building is anchored to the ground 20 feet from the base of the building. Which value is
JulijaS [17]

Answer:

The the angle which the wire make with the ground is 1.280 radian .

Step-by-step explanation:

Given as :

The length of the wire attached to the top of building = OB = 70 foot

The distance of wire anchored from base of ground = OA = 20 feet

Let the angle made by wire en and ground = Ф

Now from ,  In Triangle AOB

Cos angle = \dfrac{\textrm Base}{\textrm Hypotenuse}

Or, Cos Ф =  \dfrac{\textrm OA}{\textrm OB}

or, Cos Ф =  \dfrac{\textrm 20}{\textrm 70}

Or, Cos Ф =  \dfrac{\textrm 2}{\textrm 7}

∴  Ф = Cos^{-1}(\frac{2}{7})

I.e Ф = 73.39°

Now in radian ,

∵ 180° = \pi radian

∴ 73.39° = \frac{\pi }{180} × 73.39°

             =  \frac{3.14 }{180} × 73.39° = 1.280 radian

Hence The the angle which the wire make with the ground is 1.280 radian . Answer

4 0
2 years ago
Read 2 more answers
PLEASE HELP WILL GIVE BRAINLIEST, WILL GIVE THANKS, AND 5 STAR RATING ONLY TO THE CORRECT ANSWERER!!!! 40 POINTS
umka21 [38]

Answer:

people in Africa. African nations typically fall toward the bottom of any list measuring small size economic activity, such as income per capita or GDP per capita, despite a wealth of natural resources

Step-by-step explanation:

4 0
2 years ago
How to find gain or loss % when the gain or loss % is not given
g100num [7]

Answer:

Gain = S.P - C.P

Loss =C.P - S.P

where, S.P equals spelling price

and C.P equals cost price

Step-by-step explanation:

Hope it helps

7 0
2 years ago
A man invest 5,200,part at 4% and the balance at 3%. If his total income for the two investments is $194,how much money did he i
Fed [463]

Let the amount invested at 4% be = x

Let the amount invested at 3% be = y

Given is:

x+y=5200 or x=5200-y  .... (1)

As, total income for the two investments is $194, so equation is:

0.04x+0.03y=194   ....(2)

Putting value of x from (1) in (2)

0.04(5200-y)+0.03y=194

208-0.04y+0.03y=194

0.01y=14

y=1400

And x=5200-y

x=5200-1400=3800

Hence, money invested at 4% is $3800 and money invested at 3% is $1400

6 0
2 years ago
I'm so clueless please help!
AysviL [449]

Answer:

Nothng to it just mark them

Step-by-step explanation:

8 0
3 years ago
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