3 years ago

The sum of two numbers is 42 and the different is 10. what are the number

Mathematics

2 answers:

Kay [80]3 years ago

8 0

Answer:

26 and 16

Step-by-step explanation:

____________________

Lisa [10]3 years ago

4 0

26 and 16............

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Alenkinab [10]

2x+10=40
2x=30
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X=15

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3 years ago

A certain culture of year increases by 50% every three hours. A scientist places 9 grams of yeast in a culture dish. Write the e

miskamm [114]

Answer: a) Explicit formula : $f(x)=9(1.5)^{3x}$

b) Recursive formula : $f(x)=9(1.5)^{3x}$ and $f(x+1)=f(x)\times 1.5^3$

Step-by-step explanation:

Since we have given that

Number of grams of yeast in a culture dish initially = 9 grams

According to question, a certain culture of year increases by 50 % every three hours.

So, the explicit formula will be

$f(x)=9(1+\frac{50}{100})^{3x}\\\\f(x)=9(1+0.5)^{3x}\\\\f(x)=9(1.5)^{3x}$

And the recursive formula will be

$f(x)=9(1.5)^{3x}\\\\f(x+1)=9(1.5)^{3(x+1)}\\\\f(x+1)=9(1.5)^{3x+3}\\\\f(x+1)=9(1.5)^{3x}.(1.5)^3\\\\f(x+1)=f(x)\times 1.5^3$

Hence, a) Explicit formula : $f(x)=9(1.5)^{3x}$

b) Recursive formula : $f(x)=9(1.5)^{3x}$ and $f(x+1)=f(x)\times 1.5^3$

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3 years ago

How do you solve 2x-5=11?

Slav-nsk [51]

2x-5=11
2x-5+5=11+5
2x=16
x=16/2
x=8

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3 years ago

The sum of two numbers is 42 and the different is 10. what are the number ​

The sum of two numbers is 42 and the different is 10. what are the number