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wariber [46]
3 years ago
11

I don’t understand number 89! please help I have a test tomorrow!

Mathematics
1 answer:
Rainbow [258]3 years ago
8 0
V = rw

where; v = velocity , r = radius , w = angular speed

you're given the diameter = 0.5 miles so the radius = 0.25 miles

180 = (0.25)w
180/0.25 = w
720 radians per hour = w

2pi radians in 1 revolution

720 rad/hr * 1 rev / 2pi rad = 720/2pi rev/hr
= 114.6 rev/hr
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Incorrect 00:00 Evaluate the expression for x = 1.7. Enter your answer in the box. х2 + 3x​
IrinaK [193]

Answer:

7.99

Step-by-step explanation:

x^2 +3x

Let x=1.7

(1.7)^2 +3(1.7)

2.89+5.1

7.99

5 0
3 years ago
I need help i dont understand this​
mel-nik [20]
140 tickets sold at the door

Step by Step Explanation:

x = tickets sold in advance
y = tickets sold at the door

We use the formula ax+by=c and a+b=c

x + y = 514
17x + 20y = 9158

y = 514 - x
17x + 20(514 - x)
17x + 10,280 - 20x = 9,158
-3x + 10,280 = 9,158
-3x = -11222
x = 374

This is for tickets sold in advance so we need to find y

374 + y = 514
y = 140

140 tickets were sold at the door

8 0
3 years ago
I need help please can someone help me !!!!!!
Valentin [98]
What are you trying to find? Area, Volume, Circumference, or perimeter?
7 0
3 years ago
0.02 is 1/10 of 0.2. True or false ??
Len [333]

Answer:

true

Step-by-step explanation:

1/10 * 0.2 = 0.02

Hope this help :)

6 0
3 years ago
(GIVING EXTRA POINTS ON THIS ONE!! IM ALSO GIVING AWAY BRAINLIEST TO WHO EVER HELPS ME OUT :D)
nasty-shy [4]

Answer:

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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