2 years ago

Solve 11 + 4x = 2x + 21 for x

Mathematics

1 answer:

makkiz [27]2 years ago

7 0

Isolate the variable by dividing each side by factors that don't contain the variable.

x=5

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DiKsa [7]

ANSWER:

As we know that,

Volume of triangular prism = 1/2Bh

1/2 × (5)² × 8

1/2 × 25 × 8

100cm³.

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2 years ago

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Help plz need asap!!

Otrada [13]

For the first question, x = 4

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2 years ago

Which figure show line segment

Veronika [31]

Answer:

the first one , its a straight line and has no arrow

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2 years ago

A president, treasurer, and secretary, all di erent, are to be chosen from a club consisting of 12 people (whose names are I, J,

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>

8 0

2 years ago

Lenny worked 7 hours on Wednesday, 6 hours on Thursday, and 9 hours on Friday. His gross pay for all three days was $196.90.

tatyana61 [14]

Answer:

$8.95

Step-by-step explanation:

you add 7+6+9=22 196.90 divided by 22 is 8.95 hope this helps

5 0

2 years ago