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yawa3891 [41]
3 years ago
13

Ellen takes a multiple choice quiz that has 5 questions with 4 answers choices for Each question. What is the probability that s

he will get exactly 2 answers correct by guessing?
Mathematics
1 answer:
DedPeter [7]3 years ago
7 0
10%

5*4=20
2/20=1/10
1/10=0.10=10%
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a coin lands on heads 200 times. the relative frequency of heads is 0.4. how many times was the coin thrown?
Kazeer [188]

Answer:

The number of times coin thrown was <u>500</u>.

Step-by-step explanation:

Given:

A coin lands on heads 200 times. the relative frequency of heads is 0.4.

Now, to find the times coin was thrown.

Let the number of times coin thrown was be x.

Relative frequency = 0.4.

Number of lands on heads = 200.

So, to get the number of times coin was thrown we put formula:

Relative\ frequency=\frac{Number\ of\ lands\ on\ heads}{Number\ of\ times\ coin\ thrown}

0.4=\frac{200}{x}

<em>By cross multiplying we get:</em>

0.4x=200

<em>Dividing both sides by 0.4 we get:</em>

x=500.

Therefore, the number of times coin thrown was 500.

7 0
3 years ago
Read 2 more answers
Plz explain <br> Math question
CaHeK987 [17]

Answer:

subtract the amount of money ellen has by the amount of money she would have if she did it in her firends bank

Step-by-step explanation:

basically you do two intrest questions subtract and boom also...

GIVE ME BRAINLIEST AND HAVE A NICE DAY

5 0
3 years ago
Which of the following is a result of shifting a circle with equation (x + 3)2 + (y - 2)2 = 36 up 3 units? A. The x-coordinate o
Katen [24]

Answer:

D. (y-2) becomes (y-5) and -5 < -2

Step-by-step explanation:

When transforming functions, the following applies:

• Adding/subtracting inside the parenthesis to the input shifts the function left(+) and right(-).

• Adding/subtracting outside the parenthesis to the output shifts the function up(+) and down(-).

• Multiplying the function by a number less than 1 compresses it towards the x-axis.

• Multiplying the function by a number greater than 1 stretches it away from the x-axis.

In this situation, the circle is shifted up 3 units and the variable y which controls this is in the function. To move it up you will subtract 3 in the parenthesis for (y-2) so it becomes (y-5). This will move the vertex 3 units higher.

3 0
3 years ago
Read 2 more answers
Connor went to the county fair with $32.50 in his pocket. He bought a hot dog and a drink for $4.50 and then
Alekssandra [29.7K]

Answer:

The answer is 14.

Step-by-step explanation:

4.50 + 2.00x ≤ 32.50

32.50 - 4.50 = 28

28 / 2.00 = 14

The total number of tickets he can buy is 14.

5 0
2 years ago
Jai Narayan sells two radio sets for 2288 each.
san4es73 [151]

Answer:

1%

Step-by-step explanation:

S.P of each radio=$ 2288

Total S.P=2\times 2288=$4576

Gain=10%

Lose=10%

C.P=\frac{S.P\times 100}{100+gain(in\;percent)}

C.P=\frac{S.P\times 100}{100-loss(in\;percent)}

By using the formula

C.P of one radio=\frac{2288\times 100}{110}=$2080

C.P of another radio=\frac{2288\times 100}{100-10}=$2542.2

Total C.P of two radios=2080+2542.2=$4622.2

Total C.P >Total S.P

Loss=S.P-C.P

Loss=4622.2-4576=$46.2

Loss%=\frac{Loss}{C.P}\times 100

Loss %=\frac{46.2}{4622.2}\times 100=1%

Hence, his loss 1%

5 0
3 years ago
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