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Alex777 [14]
2 years ago
14

Help me answer this please!!! i will mark you brainliest

Mathematics
1 answer:
goldfiish [28.3K]2 years ago
4 0

Answer:

363 ft.

Step-by-step explanation:

To calculate the base side which is b we use the trigonometric identity called cosine.

cos \theta=\frac{base}{hypotenuse} \\\\cos25 = \frac{b}{400}\\\\b=400*cos 25\\b=400*0.906\\b=362.5\ ft

Since we the answer to the nearest whole number it would be b = 363 ft.

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Last one , will mark brainliest !!!!
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Step-by-step explanation:

Part 1:y=426x+4298

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Part 3: y=8140.394, or 8,140 since it's rounding to the nearest mile

7 0
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The answer to: expand and simplify 3x + 2 (x +5)
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I need help this is due tomorrow !
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Step-by-step explanation:

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Can you solve this and show work I wanna check if I got the answer right (I got -5)
marissa [1.9K]

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3 years ago
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Trei copii au impreuna 45 de lei .
Ainat [17]

Answer:

Primul copil are 6 lei, al doilea are 12 lei, al treilea are 27 de lei.

Step-by-step explanation:

Lăsați suma primului copil să fie x.

Lăsați suma al doilea copil să fie y.

Lăsați suma al treilea copil să fie z.

Trei dintre ei au 45 de lei în total.

Aceasta înseamnă că:

x + y + z = 45 ________(1)

Al doilea are de două ori valoarea primului:

y = 2x

Al treilea are cu 15 lei mai mult decât al doilea:

z = 15 + y

=> z = 15 + 2x

Puneți valoarea y și z în (1):

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7 0
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