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3 years ago

9

Write a verbal description of the expression below 7(b+5)

1 answer:

lord [1]3 years ago

7 0

The answer is 7b+35 because the seven multiplies by the b and the 5 meaning that you multiple the number that’s on the outside with what’s on the inside and be b is a variable it cannot be multiplied so you combine 7 and b which gives you 7b and then you multiply 7 and 5 which gives you 35

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Jacob’s class had 8 boys and 10 girls. Olivia’s class has 9 boys and 15 girls. Which class has the smaller ratio of boy/girls?

bonufazy [111]

Answer:

jacobs class

Step-by-step explanation:

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3 years ago

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FrozenT [24]

Answer:

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3 years ago

Determine whether each sample may be biased. Explain.

34kurt

Answer:

5: yes he could easily chose bigger looking families to get the result he wants

6: no he has isn't choosing people and has no idea the answers presumibly

7: no it's not something that they could choose or know what is going to happen, therefore or can't be biased.

I'm not sure if I did it right but I think that's what it's asking sorry if I'm wrong

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3 years ago

The authors of a paper presented a correlation analysis to investigate the relationship between maximal lactate level x and musc

ArbitrLikvidat [17]

Answer:

a) Sample correlation coefficient, r = 0.7411

bi) test statistic, t = 4.102

bii) P-value = 0.000736

Step-by-step explanation:

a) The formula for the sample correlation coefficient is given by the formula:

$r = \frac{S_{xy} }{\sqrt{S_{xx} S_{yy} }} }$

$S_{xx} = 2,648,130.357\\S_{yy} = 36.7376,\\S_{xy} = 7408.225$

$r = \frac{7408.225}{\sqrt{2648130.357*36.7376} }$

r = 0.7511

b)

i) formula for the test statistic is given by the formula:

$t = \frac{r\sqrt{n-1} }{\sqrt{1 - r^{2} } }$

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$t = \frac{0.7511\sqrt{14-1} }{\sqrt{1 - 0.7511^{2} } }$

t = 4.102

ii) Degree of freedom, df = n -2

df = 14 -2

df = 12

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P-value = (=TDIST(4.1,12,1)

P-value = 0.000736

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3 years ago

Jo said that when you multiply a nonzero whole number by a fraction less than 1, the product is always less than the whole numbe

tiny-mole [99]

Answer:

Jo is correct.

Step-by-step explanation:

No matter what number you multiply by, a fraction between 0 and 1 will give you less than the original whole number.

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4 years ago