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ser-zykov [4K]
3 years ago
14

Find the unknown angles marked in the following triangles

Mathematics
1 answer:
Andre45 [30]3 years ago
6 0
1.180-(57+36)=87 degree


2.180-39=141
141/2=70.5 degrees each
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During one calendar year, a state trooper issued a total of 375 citations for warnings and speeding tickets. Of these, there wer
timama [110]

Answer:

169 Speeding Tickets, 206 Warnings.

Step-by-step explanation:

If there were 37 more warnings than tickets, then the first thing you want to do is remove that from the total by subtracting it: 375-37 = 338.

You then halve this to split them into tickets and warnings: 338/2 = 169.

Lastly, you add back the 37 more warnings, giving you 169 speeding tickets and 206 warnings.

6 0
3 years ago
Chloe rode her bicycle directly from her house to the library in 4 minutes. The library is 1 mile from her house.
kramer
Speed = distance / time
speed = 1(mile) / 4 (minutes)
speed = 0.25 miles per minute
s = 0.25m <== ur equation

there are 60 minutes in an hr....so sub in 60 for m
s = 0.25(60)
s = 15 miles per hr <====

5 0
3 years ago
Read 2 more answers
Two friends compete with each other and five other, equally good, violinists for first and second chair in an orchestra, in a bl
Darina [25.2K]

Answer: 0.0476

Step-by-step explanation:

Given : Two friends and 5 other people compete with each other for first and second chair in an orchestra.

Total people in this competition= 2+5=7

By permutation , Number of ways to arrange 7 people= 7!

Also, number of ways for two friends end up as first and second chair together= 2 × 5!   [ 2 ways to arrange friends on first and second chair and 5! ways to arrange others]

I.e. Required probability = \dfrac{2\times5!}{7!}

=\dfrac{2!\times5!}{7\times6\times5!}\\\\=\dfrac{1}{7\times3}\\\\=\dfrac{1}{21}\\\\=0.0476

Hence, the probability that the two friends end up as first and second chair together = 0.0476

4 0
4 years ago
Find the lateral surface area of the
Novosadov [1.4K]

9514 1404 393

Answer:

  250 cm²

Step-by-step explanation:

The lateral area is the total area of the 5 rectangular faces. Each is ...

  A = LW = (10 cm)(5 cm) = 50 cm²

The lateral surface area is ...

  LSA = 5 × 50 cm² = 250 cm²

7 0
3 years ago
Please help me solve. Surface area of this pyramid?
Sever21 [200]

Answer:

4,784ft^2

Step-by-step explanation:

Well in this case we will just use the square and triangle area formulas instead of the pyramid surface area formula.

So if the base is a square then the area is 32*32 which is 1,024.

Now for the trangle, the area of a triangle b*h/2.

So b*h is 47*32 which is 1,504.

So 1,504/2 is 752.

So 752 is the area of 1 triangle and we have 4 so 5*752 is 3,760.

So 3,760 + 1,024 is 4,784.

So the total SA if the pyramid is 4,784ft^3.

6 0
4 years ago
Read 2 more answers
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