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nexus9112 [7]
3 years ago
15

A circular roller derby drink has a diameter of 95 feet if a roller derby players skate five laps around the rink how has she tr

aveled
Mathematics
1 answer:
monitta3 years ago
7 0
About 2983 ft as you find the circumfrence and mult by 5
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A bag contains 40 coins, all of them are either 2 cent or 5 cent coins. If the value of the money in the bag is $1.55, find the
dlinn [17]

Answer: Explanation:First, let's call the number of 2 cent coins: tNext, let's call the number of 5 cent coins: fWe can then write to equations from the information in the problem.Equation 1: t+f=40Equation 2: 0.02t+0.05f=1.55Step 1) Solve the first equation for t:t+f=40t+f−f=40−ft+0=40−ft=40−fStep 2) Substitute (40−f) for t in the second equation and solve for f:0.02t+0.05f=1.55 becomes:0.02(40−f)+0.05f=1.55(0.02×40)−(0.02×f)+0.05f=1.550.80−0.02f+0.05f=1.550.80+(−0.02+0.05)f=1.550.80+0.03f=1.550.80−0.80+0.03f=1.55−0.800+0.03f=0.750.03f=0.750.03f0.03=0.750.030.03f0.03=25f=25Step 3) Substitute 25 for f in the solution to the first equation at the end of Step 1 and calculate t:t=40−f becomes:t=40−25t=15The Solution Is:There are:15 two cent coins25 five cent coins

Step-by-step explanation:

5 0
2 years ago
What is -3/5 multiplied by 4/7?<br> Pls show answer with step by step answers explained pls
zheka24 [161]

Answer:

-12/35

Step-by-step explanation:

-3×4/5×7

-12/35

7 0
3 years ago
Read 2 more answers
Ignore number 2, do number one pls. 5th grade math. correct answer will be marked brainliest!
Salsk061 [2.6K]
It is d d is the answer
8 0
3 years ago
At the time she had $237 ,the cost of a lesson rose to &amp;19.how many lesson can she pay for with remaining &amp;237
ad-work [718]
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8 0
3 years ago
If you travel 4 miles around a circle with a radius of 1 mile, what is the central angle (q)?
mixer [17]

Answer:

229.18 degrees

Step-by-step explanation:

The circumference of a circle with radius r is 2×pi×r.

So if it has a radius of 1 mile, then the circumference is 2×pi×1=2pi miles.

So if we travel 4 miles, then the percentage of this circle we traveled is 4/(2pi)=63.66% approximately.

There are 360 degrees in a circle and we want to how much of that rotation belongs to traveling 4 miles of the circumference of a circle that measures 2pi miles. So 63.66%×360 degrees =229.18 degrees.

4 0
3 years ago
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