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notka56 [123]
3 years ago
10

Please help me i need this really bad

Mathematics
2 answers:
lesya [120]3 years ago
7 0
The answer is 3
Multiply 6 by 3 to get the total amount of money for the books then minus the answer 18 which you get from 6 x 3 = 18
Then minus 18 from 21 to get $3
21 - 18 = 3
Ann [662]3 years ago
3 0

Answer:

It's 3!

Step-by-step explanation:

3 books times 6 dollars each = 18 dollars.

21 minus 18 dollars = 3.

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In 3 years, Dianna will be 4 times as old as she was 33 years ago. How old is Dianna now?
Sergeu [11.5K]

Given that In 3 years, Dianna will be 4 times as old as she was 33 years ago, her present age is 45.

<h3>How old is Dianna now?</h3>

Given that, in 3 years, Dianna will be 4 times as old as she was 33 years ago.

Let x represent the age of Dianna presently.

Dianna's age in 3 years time will be: x + 3

Dianna's age 33 years ago is: x - 33

Since in 3 years, she will be 4 times as old as she was 33 years ago.

x + 3 = 4( x - 33 )

We solve for x

x + 3 = 4x - 132

3 + 132 = 4x - x

135 = 3x

x = 135/3

x = 45

Given that In 3 years, Dianna will be 4 times as old as she was 33 years ago, her present age is 45.

Learn more word problems here: brainly.com/question/2610134

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4 0
2 years ago
Write an equation of the line below.
Bogdan [553]

Answer:

y= 3/5x

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
I’ve got this and one more!!!
lisabon 2012 [21]

Area:500{  m}^{2}

5 0
3 years ago
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If f(x) = (2x^3 − 4)^6, then what is f '(x)?
Dominik [7]
The correct answer is:

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

Explanation:

That is the derivative after you differentiate using the Chain Rule.
4 0
2 years ago
Guys please help me whit this , I got a lot of time doing this please give me the answer
Usimov [2.4K]

Answer:

c

Step-by-step explanation:

this needs evaluation of Bella's income on every chore.

say when c = 1, d = 3.5*1+11= 14.5

c=2 d = 3.5*2+11= 18..evaluate for c=3,4,5.

with that it can be found that bella earns more than sweet t. so choice c

8 0
2 years ago
Read 2 more answers
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