Simplify the expression: -3(4a-5b)

1 answer:

6 0

−3(4a−5b)=(−3)(4a+−5b)=(−3)(4a)+(−3)(−5b)=−12a+15b

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Help me answer this.. plz

Fudgin [204]

Answer:

2 $\frac{1}{30}$

Step-by-step explanation:

First thing you gotta do is find the common denominator.

Do this by listing factors of the denominators:

5- 5, 10, 15, 20, 25, 30

6- 6, 12, 18, 24, 30, 36

5 and 6 both have 30 in common so that's the new denominator for all 3 of the terms.

What you do to the bottom you must do to the top.

Since you multiply 5 by 6 to get 30, you must multiply 2 and 4 by 6 as well.

Since you multiply 6 by 5 to get 30, then multiply 5 by 5 as well.

The new equation is:

$\frac{12}{30}$ + $\frac{25}{30}$ + $\frac{24}{30}$ =

Now add the numerators together

The solution is $\frac{61}{30}$ . Now simplify. 61 is prime, so you cannot change the fraction How many times does 30 go into 61? Two times. This gives us 2 $\frac{1}{30}$ .

4 0

2 years ago

Which expression shows seven more than triple a number?

Illusion [34]

I hope this helps you

A ) 7 less than triple a number

B ) 7 more than triple a number

C ) 3 less than seven time a number

D ) 3 more than seven time a number

answer is B

5 0

3 years ago

Read 2 more answers

For the function f(x)=5x^3-6, find f^-1

max2010maxim [7]

Answer:

$f^{-1}$ means the inverse function