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vekshin1
3 years ago
15

Expand the following expressions by multiplying out the brackets -4(4f+3)

Mathematics
2 answers:
melisa1 [442]3 years ago
6 0

Answer:

- 16f - 12

Step-by-step explanation:

- 4(4f + 3) ← multiply each term in the parenthesis by - 4

= - 16f - 12

ruslelena [56]3 years ago
5 0

Hello!

In order to simplify this expression, we should use the Distributive Property and distribute -4:

-4(4f+3)

-16f-12

Note:

\square A negative times a negative is a positive.

Hope everything is clear.

Let me know if you have any questions!

#KeepOnLearning

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riadik2000 [5.3K]

Answer: OPTION A

Step-by-step explanation:

Let be "a" the number of adults tickets they sold and "s" the number student of tickets they sold.

With the information given in the exercise you can set up the following System of equations:

\left \{ {{a+s=80} \atop {6a+4.5s=426}} \right.

Use the Elimination method to solve the system of equations:

1. Multiply the first equation by -6.

2. Add the equations.

3. Solve for "s" in order to find its value.

Then:

\left \{ {{-6a+-6s=-480} \atop {6a+4.5s=426}} \right.\\............................\\-1.5s=-54\\\\s=36

4. Finally, substitute the value of "s" into the first equation and solve for "a":

a+36=80\\\\a=80-36\\\\a=44

3 0
4 years ago
Sinmplify the expression -3(-5y+2)-(8y-3)<br> a) 7y-3<br> b)7y-9<br> c)23y-3
raketka [301]

Answer:

a) 7y - 3

Step-by-step explanation:

- 3( - 5y + 2) - (8y - 3)

15y - 6 - (8y - 3)

15y - 6 - 8y  + 3

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\boxed{\green{ = 7y - 3}}

8 0
3 years ago
Read 2 more answers
There is £80 in a pot which is shared out amongst 3 people. Anne gets £20 Mark gets £35 and Ben gets £25. What ratio of the mone
faltersainse [42]
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2 years ago
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Use the y=mx+b Format
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Verdich [7]

Answer:

213

Step-by-step explanation:

The circumference of the wheel is given by

C=2πr=πd

Where d is diameter, r is radius and c is circumference

The number of revolutions N multiplied by circumference should yield the total distance

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30πN=20000

Making N the subject of formula

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Rounded off, about 213 revolutions are required

3 0
3 years ago
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