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3 years ago

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Tue 2 NOV moe.alefed.com 71. Check My Understanding 2 Khadija and Muneera are sisters. Together they have 15 dolls. Muneera has

4 times the number of dolls that Khadija has. Write and solve a system of equations to find how many dolls each girl has. Khadija has dolls. Muneera has

1 answer:

tigry1 [53]3 years ago

5 0

Answer:

hhsnghh sihdg hhurihhspig

Step-by-step explanation:

shhgnshhistdh shdj

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Find the inverse of y=-3x+6

mihalych1998 [28]

Answer:

y = (x – 6) / -3 = [2 – x/3]

Step-by-step explanation:

y = f(x) = -3x + 6

f⁻¹(x) → x = -3y + 6 → (x – 6) / -3 → x / -3 + -6/-3 → -x / 3 + 2 → 2 – x/3

5 0

3 years ago

1. Suppose we have a six-sided die that we roll once. Let ai represent the event that the result is i. Let Bj represent the even

Alex787 [66]

Using the probability concept, it is found that there is a

a) 0.2 = 20% probability that 3 is obtained.

b) 0.3333 = 33.33% probability that 6 is obtained.

c) 0.6667 = 66.67% probability of a number greater than 3.

d) 0.6667 = 66.67% probability of an even number.

A probability is the <u>number of desired outcomes divided by the number of total outcomes</u>.

Item a:

There are 5 numbers greater than 1, one of which is 3, hence:

$p = \frac{1}{5} = 0.2$

0.2 = 20% probability that 3 is obtained.

Item b:

There are 3 numbers greater than 3, one of which is 6, hence:

$p = \frac{1}{3} = 0.3333$

0.3333 = 33.33% probability that 6 is obtained.

Item c:

There are 3 even numbers, two of which are greater than 3, hence:

$p = \frac{2}{3} = 0.6667$

0.6667 = 66.67% probability of a number greater than 3.

Item d:

There are 3 numbers greater than 3, two of which are even, hence:

$p = \frac{2}{3} = 0.6667$

0.6667 = 66.67% probability of an even number.

A similar problem is given at brainly.com/question/25667645

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3 years ago

What is the volume of a cylinder with the base of 75 cm squared and the height of 9 cm?

shepuryov [24]

20 degrees clecuis juste bcause i know

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3 years ago

Researchers have noted a decline in cognitive functioning as people age (Bartus, 1990). However, the results from other research

kolbaska11 [484]

Complete Question

The complete question is shown on the first uploaded image

Answer:

a

Yes the researcher can conclude that the supplement has a significant effect on cognitive skill

b

$d = 0.5778$

c

The result of this hypothesis test shows that there is sufficient evidence to that the supplement had significant effect.The measure of effect size is large due to the large value of Cohen's d (0.5778 > 0.30 )

Step-by-step explanation:

From the question we are told that

The sample size is n=16

The sample mean is $M = 50.2$

The standard deviation is $\sigma = 9$

The population mean is $\mu = 45$

The level of significance is $\alpha = 0.05$

The null hypothesis is $H_o \mu =45$

The alternative hypothesis is $H_a \mu \ne 45$

Generally the test statistics is mathematically represented as

$z = \frac{M - \mu}{\frac{\sigma}{\sqrt{n} } }$

=> $z = \frac{50.2 - 45}{\frac{9}{\sqrt{16} } }$

=> $z = 2.31$

Generally the p-value is mathematically represented as

$p-value = 2 * P(Z > z )$

$p-value = 2 * P(Z > 2.31 )$

From the z-table

$P(Z > 2.31 ) = 0.010444$

=> $p-value = 2 * 0.010444$

=> $p-value = 0.021$

From the obtained values we see that $p-value < 0.05$

Decision Rule

Reject the null hypothesis

Conclusion

There is sufficient evidence to conclude that the supplement has a significant effect on the cognitive skill of elderly adults

Generally the Cohen's d for this study is mathematically represented as

$d = \frac{M - \mu}{\sigma }$

=> $d = \frac{50.2 -45}{9 }$

=> $d = 0.5778$

3 0

4 years ago

30% of 76.01 pls help me this is a math question

Stells [14]

Answer:

22.803

Step-by-step explanation:

multiple 30% by 76.01 equals 22.803

5 0

3 years ago

Read 2 more answers