What’s the answer to this

Mathematics

1 answer:

lana66690 [7]3 years ago

3 0

$250-number\ of\ people\\\\\dfrac{2}{5}\ of\ the\ 250\ people\to\dfrac{2}{5}\cdot250=\dfrac{2}{1}\cdot50=100-number\ of\ girls\\\\\dfrac{3}{10}\ of\ the\ 250\ people\to\dfrac{3}{10}\cdot250=\dfrac{3}{1}\cdot25=75-number\ of\ boys\\\\100+75=175-number\ of\ girls\ and\ boys\\\\250-175=75-number\ of\ adults\\\\Answer:\ 75$

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What is the coefficient of the term of degree 7 in the polynomial below? 2x^6 + 2 – 4x^2 + 5x^7 – 4x A. 2 B. 4 C. 6 D. 5

Aloiza [94]

B is the answer for this

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4 years ago

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Mr castle shares out 64 marbles between emily and asif in the ratio 7:1 how many marbles does each child get

Novay_Z [31]

Answer:

<h2>Emily: 72 marbles</h2><h2>Asif: 8 marbles</h2>

<em>Step-by-step explanation:</em>

first lets find in how many shares is the total amount of marbles divided into:

7+1=8

now, lets find how many marbles are in each share:

64/8=8

now that we know that each share of marbles contains 8 marbles, we can find how many each child got:

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Asif got 1 share: 8*1= 8 marbles

Hence,

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3 years ago

A 2012 Gallup poll surveyed Americans about their employment status and whether or not they have diabetes. The survey results in

posledela

A) See picture for the table.

To make the table, multiply 47774 by 1.5% to get total that have diabetes and multiply 5855 by 2.5% to get total unemployed that have it, then using subtraction fill in the other squares of the table.

Hypothesis:

H0: No association between employment and diabetes.

H1: Association between the two

Using a graphing calculator or Excel, run a chi-test.

Chi squared equals 31.844 with 1 degrees of freedom.

The two-tailed P value is less than 0.0001

With this information we can reject the null hypothesis and conclude there is an association between diabetes and employment.

Although there is a statistical significance, there really is no practical significance between an incidence rate of 1.5 or 2.5%