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Fiesta28 [93]
3 years ago
7

Tamika has a spinner with 5 equal sections- red, blue, yellow, and purple. she plans to pin it 150 times predict how many times

she should expect the pointer to land on either green or yellow
Mathematics
1 answer:
Alexxandr [17]3 years ago
6 0

Number times landing on green) = 150 * 1/5 = 30

Number times landing on yellow = 150 * 1/5 = 30

Answer 60 times

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Priya has a piece of string 5/6 yard long. She cuts 3/5 of the piece of string for a craft. What is the length of the string lef
Solnce55 [7]

Total length of the string = \frac{5}{6} yard

Length of string used for craft = \frac{3}{5} of total length of string

= \frac{3}{5} of \frac{5}{6}

= \frac{3}{5} \times \frac{5}{6}

= \frac{3}{6} yard

Length of the string left after use = Total length of the string - Length of string used for craft

Length of the string left after use = \frac{5}{6}-\frac{3}{6}

=\frac{2}{6}

Reducing it to the lowest term, we get

=\frac{1}{3} yard

Therefore, the length of string left is \frac{1}{3} yard.

3 0
3 years ago
Read 2 more answers
Given a sample of 35, what is the sample standard deviation of a pair of jeans if the 90% confidence interval is [37.14, 42.86]
DENIUS [597]

Answer:

<h2>10.295</h2>

Step-by-step explanation:

Using the value for calculating the confidence interval as given;

CI = xbar + Z*σ/√n

xbar  is the mean = 37.14+42.86/2

xbar= 80/2

xbar = 40

Z is the z-score at the 90% confidence = 1.645

σ is the standard deviation

n is the sample size = 35

Given the confidence interval CI as [37.14, 42.86]

Using  the maximum value of the confidence interval to get the value of the standard deviation, we will have;

42.86 =  xbar + Z*σ/√n

42.86 = 40 + 1.645* σ/√35

42.86-40 = 1.645*σ/√35

2.86 = 1.645*σ/√35

2.86/1.645 = σ/√35

1.739 = σ/√35

1.739 = σ/5.92

σ= 1.739*5.92

σ = 10.295

Hence, the sample standard deviation of a pair of jeans is 10.295

7 0
3 years ago
Mr. Heath organizes a six-game tournament where players will
EleoNora [17]

9514 1404 393

Answer:

  (W, T, L, S) = (3, 2, 1, 4.1)

Step-by-step explanation:

For some number of wins (W), ties (T), and losses (L), the player's score will be ...

  score = 2.2W +0.25T -3L

For 3 wins, 2 ties, and 1 loss, the player's score is ...

  2.2(3) +0.25(2) -3(1) = 6.6 +0.5 -3 = 4.1

4 0
2 years ago
Isaiah is having his house painted. He paid $525 for the required materials, and he will pay $30 an hour for the painters to com
alukav5142 [94]

Answer:

Step-by-step explanation:

x is the amount of hours it will take. Since he pays $30 per hour, your answer would be 30x + 525

7 0
3 years ago
M=7,r=8, t=2 ; mr/t = what
galina1969 [7]

Answer:

28

Step-by-step explanation:

Plug in the corresponding numbers to the corresponding variables. Note that:

m = 7

r = 8

t = 2

mr/t = (7 * 8)/2

(7 * (8/2)) = 7 * 4 = 28

28 is your answer.

~

4 0
3 years ago
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