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Nady [450]
3 years ago
13

Find all the missing angles: a, b, c, d.

Mathematics
1 answer:
morpeh [17]3 years ago
6 0

Answer:

a= 180-60-55=65

we know that the angle of a flat(?) ground would be 180, so we can take away the 60 and 55 to find a.

b=180-90-65=25

the sum of interior angle of a triangle would be 180, now we know what a is, also the right angle is 90, now we can take away the 90 and 65 to find b.  

c=25

c is 25, because two angles on both sides of a X is the same

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arlik [135]

a. The expression for the tension in the string is T = mg

b. The expression for the tension in the chain is T = 2mg

To solve the problem, we need to know what tension is.

<h3>What is tension?</h3>

This is the opposing force in a stretched material.

<h3>a. Tension in the string</h3>

The expression for the tension in the string is T = mg

Since the string supports the weight of the object, the tension in the string equals the weight of the particle.

Let

  • T = tension in sring and
  • W = weight of particle = mg where
  • m = mass of particle and
  • g = acceleration due to gravity

So, T = W

T = mg

So, the expression for the tension in the string is T = mg

<h3>b. Tension in chain</h3>

The expression for the tension in the chain is T = 2mg

<h3 />

Since the chain supports both strings, the tension in the chain equals the tension in both strings.

Let

  • T' = tension in chain and
  • T = tension in each string

So, T' = T + T

T' = 2T

T' = 2W

T' = 2mg

So, the expression for the tension in the chain is T = 2mg

<h3 />

Learn more about tension here:

brainly.com/question/24994188

5 0
2 years ago
Solve for R<br><br> 0=-100+130/(1+R)
PIT_PIT [208]

Answer:

0.3

Step-by-step explanation:

4 0
3 years ago
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Look at the file below! Thank you!
rosijanka [135]

Answer:

15.3

Step-by-step explanation:

throu the table we know that she earn (20.40-10.20=10.20)for every two hours

so 1 hour will be 10.20/2=5.1

3 hour: 10.20+5.1=15.3

3 0
3 years ago
What does 4f-2f + 3-f= equal
lidiya [134]

Answer:

f + 3

Step-by-step explanation:

Combine like-terms

4f - 2f - f +3

f + 3

7 0
2 years ago
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Let u = &lt;-5, 2&gt;, v = &lt;-2, 6&gt;. Find 4u + 3v.
Arisa [49]

Answer:<-26, 26>

Step-by-step explanation: <4(-5), 4(2)> and

<3(-2), 3(6)>

<-20, 8> and <-6, 18>

Now add <(-20+(-6)), (8+18)>

<-26, 26>

8 0
2 years ago
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