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adoni [48]
3 years ago
13

What is the length of AC?

Mathematics
1 answer:
ella [17]3 years ago
5 0

Answer:

2.96

Step-by-step explanation:

The cosine of an angle is the length of the adjacent side divided by the length of the hypotenuse. In this case:

\cos 65=\dfrac{x}{7}

x=7\cdot \cos 65\approx 2.96

Hope this helps!

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A bicycle has a speed of 6 m/s. What is its speed in km/h?<br> (1 km=1000 m)<br> (1 h = 3600 s)
Tems11 [23]

answer:

m/s --- km/h = \frac{1000}{3600}

km/h= \frac{5}{18}

6m/s= \frac{6*5}{18}

6m/s= 1.66 km/h

6 0
3 years ago
Kamila buys a notebook for $1.59 and pens for $0.29 each. She spends $5.07.
emmasim [6.3K]

Answer:

12 pens

Step-by-step explanation:

Let the variable that can be used to determine the number of pens that Kamila bought be represented by n.

Price of a notebook = $1.59

Price a pen = $0.29

Total amount spent = $5.07

But,

1.59 + 0.29 n = 5.07

So that,

0.29 n = 5.07 - 1.59

0.29 n  = 3.48

n = \frac{3.48}{0.29}

  = 12

Therefore, Kamila bought 12 pens.

6 0
3 years ago
4.
denis23 [38]
The answer is none. There are no solutions
6 0
3 years ago
Can someone help me?
loris [4]

Answer:

i do not know srry

Step-by-step explanation:

i think u should try and solve it with a better teacher

4 0
3 years ago
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3x+2y = -7 solve for x any y using substitution
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