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3 years ago

I think of a number, double it and the result is 15

Mathematics

1 answer:

melisa1 [442]3 years ago

8 0

The number in question is 7.5

Step-by-step explanation:

15 ÷ 2 = 7.5

Why divide by 2? Because dividing by 2 is the <u>inverse</u> of multiplying by 2. To double-check our solution, just multiply 7.5 by 2... and 15!!

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Step-by-step explanation:

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3 years ago

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The tennis team is selling tickets to wash for six dollars. And they don't do not sell very much tickets, the team decreases the

schepotkina [342]

Answer:

The new cost of tickets after decrease of price at 23 % rate is $ 4.62

Step-by-step explanation:

Given as :

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The final cost of tickets = initial cost of tickets × ( 1 - $\dfrac{\textrm rate}{100}$ )

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Hence The new cost of tickets after decrease of price at 23 % rate is $ 4.62 Answer

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4 years ago

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18.4

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4 years ago

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If f(x)=4x^2+1 and g(x) =x^2-5 find (f-g)(x)

docker41 [41]

Answer:

$\huge\boxed{(f-g)(x)=3x^2+6}$

Step-by-step explanation:

$(f-g)(x)=f(x)(x)\\\\\text{substitute}\ f(x)=4x^2+1\ \text{and}\ g(x)=x^2-5\\\\(f-g)(x)=(4x^2+1)-(x^2-5)=4x^2+1-x^2-(-5)=4x^2+1-x^2+5\\\\\text{combine like terms}\\\\(f-g)(x)=(4x^2-x^2)+(1+5)=3x^2+6$

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4 years ago

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4 years ago

I think of a number, double it and the result is 15​

I think of a number, double it and the result is 15