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3 years ago

I really need help with this Triangle problem

Mathematics

1 answer:

hjlf3 years ago

3 0

Answer:

Step-by-step explanation:

pythagoras theorem

${x}^{2}$

$=225 \times 2 + 225 \times 2 \\$

=900

x=30

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The nth term of a sequence is 2n-1.

damaskus [11]

Answer: 25, 31 and 37

Step-by-step explanation:

(2n-1)= 19, 21, 23, 25, 27, 29, 31, 33, 35, 37

(3n+1)= 19, 22, 25, 28, 31, 34, 37,

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3 years ago

Al sumar su doble, su mitad y 15 se obtiene 99.<br>

Ksju [112]

Answer:x = numero

2x= doble

x/2= mitad

sumamos todo : x+2x+x/2+15=99

7x/2= 99-15

7x= 84(2)

x=168/7

x=24

comprueba sumando 24+48+12+15=99 suerte!!!

Step-by-step explanation:

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3 years ago

If x^2=20 what is the value of x

tankabanditka [31]

Answer:

Step-by-step explanation:

x^2=20

just square both sides and u get

x = 4.472135955

6 0

4 years ago

Read 2 more answers

21 is greater than or equal to 3(a-7) +9

likoan [24]

21≥<span>3(a-7) +9
first, just solve it like a normal equation
Distribute
21</span>≥3a-21+9
<span>Combine numbers
21</span>≥3a-12
<span>Solve like equation
33</span>≥3a
11≥a
<span>"a" has to be less than or equal to 11 for the inequality to be true

</span>

4 0

3 years ago

A wheelchair ramp is 4.2 meters long. it rises up 7.0 meters. what is the angle of elevation to the nearest tenth of a degree?

Nastasia [14]

<h3>Answer: 36.9 degrees</h3>

=======================================

Work Shown:

I'm assuming your teacher meant to say the ramp is 7 meters long and the ramp rises up 4.2 meters. It doesn't make sense the way they phrased it initially since the ramp must be the longest part (it is the hypotenuse of the right triangle).

See diagram below.

The angle of elevation is the angle made between the ramp and the ground. It's the angle amount the ramp tilts upward.

sin(angle) = opposite/hypotenuse

sin(theta) = 4.2/7

sin(theta) = 0.6

theta = arcsin(0.6)

theta = 36.869897645844

theta = 36.9

Note: inverse sine or $\sin^{-1}$ is the same as arcsine. Make sure your calculator is in degree mode.

6 0

4 years ago

I really need help with this Triangle problem​

I really need help with this Triangle problem