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Alex787 [66]
3 years ago
10

The sum of five more than a certain number and 10 more than twice the number is equal to the product of 2 and the number increas

ed by eight. Find the number.
Mathematics
1 answer:
Brums [2.3K]3 years ago
3 0

Answer:

1

Step-by-step explanation:

(N+5 plus 2N+10)

Equals

(N+8) times 2

Equals

3N+15=2N+16

equals N=1

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HELP PLEASE
Maurinko [17]
\bf \cfrac{x^2-x-42}{x-6}\implies \cfrac{(x+7)\underline{(x-6)}}{\underline{x-6}}\implies x+7

so.. the left-hand-side does indeed simplify to x+7, so the equation does check out.

however, notice something, for the equation of x+7, when x = 6, we get (6) + 7 which is 13.

BUT for the rational, we get    \bf \cfrac{x^2-x-42}{x-6}\qquad \boxed{x=6}\implies \cfrac{x^2-x-42}{\boxed{6}-6}\implies \stackrel{und efined}{\cfrac{x^2-x-42}{0}}

so, even though the siimplification is correct, the rational or original expression is constrained in its domain.
6 0
3 years ago
Why is this correct?
Vanyuwa [196]

Answer: A= independent variable W = dependent variable  

Step-by-step explanation:

w= a/25

7 0
3 years ago
Amanda bought a truck for $20,000. The value of the truck depreciates by 7 percent each year. Which of the following functions m
vaieri [72.5K]

Answer:

It would be D

ƒ(x) = 20,000 * (0.93) ^ x

Where ^x means to the power of x

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Deirde spent 40% of her money in one shop and 35% of it in another. If she had €26.80 left, how much she at first​
Reil [10]

Answer:

107.20 euros.

Step-by-step explanation:

Let the amount she had initially be x euros.

Then we have the equation:

x - 0.40x - 0.35x =  26.80

x - 0.75x = 26.80

0.25x = 25.80

Multiply both sides by 4:-

x = 107.20 euros.

4 0
3 years ago
Read 2 more answers
Pls help I’ll brainlest ASAP
Ksju [112]

Answer:

I think the answer is B

Explanation:

1.25x10 to the power of 7 =

12,500,000

I hope it helps!

7 0
3 years ago
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