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Finger [1]
3 years ago
15

Find the values of I and y. Write your answer in simplest form. Will mark branliest, help

Mathematics
1 answer:
galina1969 [7]3 years ago
6 0

Answer:

sin30=p/h

1/2 =x/12

x=12/2=6...answer

sin60=p/h

√3/2=y/12

y=√3×12/2=6√3answer

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With the beam being held still at a height of 40 m, the crane breaks and the beam falls to the ground. Assuming no air resistanc
lapo4ka [179]
What we have so far:
Kinetic energy = 0. The reason behind that is because the beam is not moving at a height of 40m.
Gavity, g = 9.8m/s²
Height = 40m
Potential energy = mgh; this is equal to 0 because m, stands for mass and in this problem, we do not have a value for the mass of the beam. Hence, 0 x 9.8m/s² x 40m = 0. Potential energy = 0.

Solution:
We will use the equation of Total energy:
TE = potential energy + kinetic energy

TE = 0 + 0

∴ TE = 0

The answer is: Assuming no air resistance, the total energy of the beam as it hits the ground is 0.
8 0
3 years ago
I will mark brainliest xx.
Ivanshal [37]

Answer:

24

Step-by-step explanation:

3x - 14 + 6 - 4 - 2x = 12 => 3x -12 - 2x = 12 => x = 24

8 0
3 years ago
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What is (-5x^2 + 6x + 7) + (-x^2 + 4x) in polynomial standard form?
natka813 [3]

Answer:

I'm not a human I'm bot

Step-by-step explanation:

so if anything PLEASERE DONT REPORT

7 0
3 years ago
Simplify the following without a calculator leave your answer with positive exponents
alexira [117]
It would be simplified: 2/375
8 0
3 years ago
Suppose a term of a geometric sequence is a4 = 121.5 and the common ratio is 3. Write the formula for this sequence in the form
BigorU [14]

Answer:

a_n = 4.5 * 3^{n-1}

Step-by-step explanation:

Given

a_4 = 121.5

r = 3

Required

a_n = a_1 * r^{n -1}

Substitute 4 for n in a_n = a_1 * r^{n -1}

a_4 = a_1 * r^{4 -1}

a_4 = a_1 * r^3

Substitute 121.5 for a_4

121.5 = a_1 * 3^3

121.5 = a_1 * 27

Solve for a1

a_1 = \frac{121.5}{27}

a_1 = 4.5

So, we have:

a_n = a_1 * r^{n -1}

a_n = 4.5 * 3^{n-1}

6 0
3 years ago
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