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3 years ago

13

Ann's car can go 266 miles on 7 gallons of gas. During a drive ann used 8 gallons of gas. how far dis she drive

1 answer:

soldier1979 [14.2K]3 years ago

3 0

266/7 =38 miles/ gal

38*8= 304 miles

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Ierofanga [76]

Answer:

There are 220 choices

Step-by-step explanation:

Given

$People = 12$

$Selection =3$ (President, Treasurer and Secretary)

Required

Determine number of selection (if no restriction)

This is calculated using the following combination formula:

$^nC_r = \frac{n!}{(n - r)!r!}$

Where

$n = 12$

$r= 3$

So, we have:

$^nC_r = \frac{n!}{(n - r)!r!}$

$^{12}C_3 = \frac{12!}{(12 - 3)!3!}$

$^{12}C_3 = \frac{12!}{9!3!}$

$^{12}C_3 = \frac{12*11*10*9!}{9!3!}$

$^{12}C_3 = \frac{12*11*10}{3!}$

$^{12}C_3 = \frac{12*11*10}{3*2*1}$

$^{12}C_3 = \frac{12*11*10}{6}$

$^{12}C_3 = 2*11*10$

$^{12}C_3 = 220\ ways$

<em>There are 220 choices</em>

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2 years ago

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sweet-ann [11.9K]

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<h2>Question #22 Answer</h2>

B. 2 in.

<h3>Explanation:</h3>

$\frac{3\times4}{6}$

Cross out the common factor

$\frac{4}{2}\\ 2$

________________________________________________________

<h2>Question #23 Answer (Picture attached)</h2>

D. proportional, equal

<h3>Explanation:</h3>

$Two\ figure\ are\ sand\ to\ \\ be\ similar\ if\ the\\ Conesesponding\ sides\ we\\ proportional\ and\ the\\ Corresponding\ ongles\ are\\ equal.$

$If\ triangle\$ Δ $ABC\ is\ similar\ to$
Δ × $yz.\ Thes$
$\frac{AB}{xy}=\frac{AC}{xz}=\frac{BC}{yz}$

$and$

$< A= < X,\ < B= < y\ and\ < C= < z$

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2 years ago