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2 years ago

If = 12 –3 a,find the value ofxwhen a= 8

Mathematics

1 answer:

faust18 [17]2 years ago

5 0

Answer:

-12

Step-by-step explanation:

x = 12-3a

When a=8:

x = 12-3(8)

x = 12 - 24

x = -12

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Solve the following quadratic equation: x/x+3 = 5/2x+6

Leni [432]

Answer:

$x=5/2, x=-3\\$

Step-by-step explanation:

$x(2x+6)=5(x+3)\\2x^2+6x=5x+15\\2x^2+6x-5x-15=0\\2x^2+x-15=0\\2x^2+6x-5x-15=0\\2x(x+3)-5(x+3)=0\\(2x-5)(x+3)=0\\2x-5=0, x+3=0\\x=5/2, x=-3\\$

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3 years ago

For each of the following use f(x) = 3x, g(x) = 9x + 2.

Ivenika [448]

Answer:

Step-by-step explanation:

f(x)= 3x

x=-3

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g(x)=29

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3 years ago

Assume that 11 people, including the husband and wife pair, apply for 5 sales positions. People are hired at random. (1) what is

Andrew [12]

The probability that both the husband and wife are hired is $\frac{2}{11}$

Explanation

Total number of people = 11 and total number of sales positions = 5

So, the total possible number of ways for selecting 5 people from 11 people will be: $^1^1C_{5}$

Now if both the husband and wife are hired, then it means the remaining (5-2)= 3 positions are filled from the remaining (11 -2) = 9 people.

So, the possible number of ways for selecting 3 people from 9 people will be: $^9C_{3}$

Thus, the probability $= \frac{^9C_{3}}{^1^1C_{5}}=\frac{84}{462}=\frac{2}{11}$

4 0

4 years ago

What is the square root of 5647

lubasha [3.4K]

75.146523539 is the answer

7 0

4 years ago

What is the area in square inches?

miv72 [106K]

Answer:

946 Sq Inches

Step-by-step explanation:

just cut it off to make two rectangles

28 * 7 = 196

30*25= 750

then add em up

750+196 = 946

8 0

3 years ago

Read 2 more answers