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3 years ago

14

the length of a Ribbon is 11.55 metre if it is cut into pieces and divided equally among 7 Girls how much ribbon will each get f

ind

2 answers:

Gelneren [198K]3 years ago

5 0

Answer:

1.65 meters

Step-by-step explanation:

11.55 meters divided by 7 is 1.65 meters

oksian1 [2.3K]3 years ago

3 0

Answer:

1.65 metres per girl

Step-by-step explanation:

Divide 11.55 (length) of ribbon by 7 girls (11.55/7). You get 1.65 metres.

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Scores on a certain intelligence test for children between ages 13 and 15 years are approximately normally distributed with μ=10

Tju [1.3M]

Answer: 0.8238

Step-by-step explanation:

Given : Scores on a certain intelligence test for children between ages 13 and 15 years are approximately normally distributed with $\mu=106$ and $\sigma=15$ .

Let x denotes the scores on a certain intelligence test for children between ages 13 and 15 years.

Then, the proportion of children aged 13 to 15 years old have scores on this test above 92 will be :-

$P(x>92)=1-P(x\leq92)\\\\=1-P(\dfrac{x-\mu}{\sigma}\leq\dfrac{92-106}{15})\\\\=1-P(z\leq })\\\\=1-P(z\leq-0.93)=1-(1-P(z\leq0.93))\ \ [\because\ P(Z\leq -z)=1-P(Z\leq z)]\\\\=P(z\leq0.93)=0.8238\ \ [\text{By using z-value table.}]$

Hence, the proportion of children aged 13 to 15 years old have scores on this test above 92 = 0.8238

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3 years ago

Angles A and B are supplementary.Angle A has a measure of 80 degrees. What is the measure of angle B

yulyashka [42]

The sum of two supplementary angles is 180 degrees.

A+B=180.

80+B=180

B= 180-80

B=100

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777dan777 [17]

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Step-by-step explanation:

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Answer:

Y= $240

Step-by-step explanation:

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