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3 years ago

The product of twice a number and three is the same as the difference of five times the number and 3/4 . Find the number

Mathematics

1 answer:

castortr0y [4]3 years ago

3 0

We start by taking the number to be ‘x’

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What is the answer to 7(1 + 4k)

Sophie [7]

How to solve it:
•1. multiply 7 x 1= 7
•2. multiply 7 x 4k= 28k

so the answer is: 7+28k

i hope i have been helpful :)

8 0

3 years ago

Read 2 more answers

3. A company with loud machinery needs to cut its sound intensity to 44% of its original level. By how many decibels would the l

sergeinik [125]

Answer: 3. The correct option is: A) 3.57 decibels.

6. The correct option is: B) $ln(\frac{x^2}{c^5})$ 

Step-by-step explanation:

3. Sound intensity is cut to 44% of its original level. That means, if the original sound intensity was 100, then now sound intensity will be 44.

So, $I_{0}= 100$ and $I= 44$

Using the formula $L= 10log(\frac{I}{I_{0}})$ , we will get.....

$L= 10log(\frac{44}{100})\\ \\ L= 10log(0.44)\\ \\ L= 10(-0.3565...)=-3.565...\approx -3.57$

(Rounded to the nearest hundredth)

So, the loudness would be reduced by 3.57 decibels.

6. Given expression is: $2ln(x) - 5ln(c)$

First applying the property $m*log(x)= log(x^m)$ , we will get.....

$ln(x^2)-ln(c^5)$

Now using the formula, $log(a)-log(b)= log(\frac{a}{b})$ , we will get....

$ln(x^2)-ln(c^5) = ln(\frac{x^2}{c^5})$

Thus, the answer as a single natural logarithm is $ln(\frac{x^2}{c^5})$

8 0

3 years ago

Simplify (6x^2 - 3 - 5x^3) - (4x^3 +2x^2 - 8)

yanalaym [24]

Answer:

-9x^3+4x^2+5

Step-by-step explanation:

(6x^2 - 3 - 5x^3) - (4x^3 +2x^2 - 8)

distribute the minus sign

(6x^2 - 3 - 5x^3) - 4x^3 -2x^2 + 8

Combine like terms

-5x^3 -4x^3 +6x^2 - 2x^2 -3 +8

-9x^3+4x^2+5

6 0

3 years ago

PLEASE HELP Solve. 5x+2/2 = 2x - 1 X = ________ ?

lakkis [162]

5x + 2/2 = 2x - 1
2/2 is basically 1 so
5x + 1 = 2x - 1
isolate the variable
5x + 1 = 2x - 1
-1 -1
5x = 2x -2
-2x -2x
3x = -2
solve
3x/3=-2/3
x=-2/3

4 0

3 years ago

9.25x - 1201≥ 185 please help

iVinArrow [24]

Answer:

x≥149.84

Step-by-step explanation:

solve for x the inequality

9.25x - 1201 ≥ 185

9.25x ≥ 185+1201

9.25x ≥1386

x ≥ 149.84

Learn More

Inequality: brainly.com/question/13508953

Keywords: inequality

#LearnwithBrainly

4 0

2 years ago