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Oksi-84 [34.3K]
3 years ago
11

A coin is flipped 70 times and lands on tails 21 times. What is the relative frequency of the coin landing on tails?

Mathematics
2 answers:
DedPeter [7]3 years ago
8 0
It is 30%, because 21 out of 70 times is 30%.
vlada-n [284]3 years ago
8 0

It's 30%, what explanation is needed

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A container holds 4 3/8 gallons of water. A hole in the container causes 7/8 gallon to leak out. How many gallons of water are l
Elina [12.6K]

Answer:the number of gallons of water left is 3.5

Step-by-step explanation:

The initial amount of water in the container is 4 3/8 gallons. Converting 4 3/8 gallons to improper fraction, it becomes 35/8 gallons of water.

A hole in the container causes 7/8 gallon to leak out. The number of gallons of water left in the container would be

Initial amount - amount that leaked. It becomes

35/8 - 7/8 = 28/8 = 3 4/8 = 3.5 gallons of water

8 0
3 years ago
What is the value of a in the equation 5a -10b = 45 when b = 3
leva [86]
Salutations!

5a-10b = 45

value of b = 3

Multiply 10 and 3

10*3=30

Now, you can solve the equation --

5a-30=45

separate the variables aside, and the numbers aside.

5a=45 +30

5a=75

a=75/5

a=15

Hope I helped (:

Have a great day!
6 0
3 years ago
Which graph represents the solution to the system of equations?
Nataliya [291]

Answer:

I can help but I need better pic

7 0
3 years ago
On a piece of paper graph y < 2x - 3 then determine
andrezito [222]

Answer

3.5

Step-by-step explanation:

y < 2x - 3 = 3.5

2x is greater than y and y is an unknown value you can solve this by using a two step equation

5 0
3 years ago
Kylie starts with $145 in her piggy bank. Each month she adds $20.
djverab [1.8K]

Kylie's first month collection, a1= $ 145

Second month collection , a2= $145+ 20

Third month collection, a3  = $145 +2*20

.

.

.

.

so for n months collection = an-1+20

We get an= 20 + an-1  and a1=145


4 0
4 years ago
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