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Olin [163]
4 years ago
6

Use a special right triangle to write cos 30

Mathematics
1 answer:
liraira [26]4 years ago
6 0
Cos 30= s√3(FRACTION)2s=3√(FRACTION)2
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Answer 10 only please, explain how you got your answer
ira [324]

Question:

The circumference of a clock is 22 inches. What is the radius of the clock?

Answer:

Radius = 3.5 inches

Solution:

Shape of the clock is circle.

Circumference of the circle = 2πr

Circumference of a clock = 22 inches

\Rightarrow2\pi r=22

$\Rightarrow2\times\frac{22}{7}\times  r=22

$\Rightarrow\frac{44}{7}\times  r=22

$\Rightarrow  r=22\times \frac{7}{44}

$\Rightarrow  r=\frac{7}{2}

⇒ r = 3.5 inches

Hence the radius of the clock is 3.5 inches.

8 0
3 years ago
How much does 7 go into 125
Setler [38]
17 goes into 125 17.857 times
6 0
3 years ago
Read 2 more answers
There are
ehidna [41]
Yesterday, 1/4 of 80 =20 gave their speeches, so there are 80-20=60 students left.
Today, 2/5 of 60=24 students gave their speeches, so there are 60-24=36 students who still haven't give their speeches
another way to think of it is 80*(1- 1/4)*(1- 2/5)=80*(3/4)*(3/5)=36
4 0
3 years ago
Select three ratios that are equivalent to 7 : 6.
melisa1 [442]

Answer:

14:12

21:18

35:30

Step-by-step explanation:

These are all equivalent to 7:6

Hope this helps! :]

7 0
3 years ago
Please help me<br> Solve for x.<br> a) 30<br> b) 27<br> c) 33
OlgaM077 [116]

Answer:

x = 27

Step-by-step explanation:

The angle at any point on a straight line is 180 degrees.

The middle line over there is creating a right angle which is 90 degrees.

This must mean that both sides are 90 degrees.

3x+9 = 90

3x = 81

x = 27

4 0
4 years ago
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