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Viktor [21]
3 years ago
7

A²b-b² if a = 3 and b = -4

Mathematics
1 answer:
LiRa [457]3 years ago
8 0

The answer is -52

First you must substitute the variables

(3^2)(-4)-(-4^2)

Then you must simplify

-52

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(2x^2 + 7x - 39) + (2x - 7)
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The sandwich shop offers combo meals with a choice of one sandwich, one side, and one drink. On total there are 560 combos avail
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There are 7 sides available.

The fundamental counting principal tells us to find the total number of combinations of independent items, multiply the number of choices from each one (choices x choices x....)

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Read 2 more answers
Inverse of f(x)=-2x-5/-4x+9
posledela

Answer:

                                           

Step-by-step explanation:

7 0
3 years ago
A bag contains white marbles and yellow marbles, 24 in total. The number of white marbles is 9 less than 2 times the number of y
Zinaida [17]

There are 13 white marbles in the bag.

Step-by-step explanation:

Given,

Total number of marbles = 24

Let,

x represent the number of white marbles.

y represent the number of yellow marbles.

According to given statement;

x+y=24      Eqn 1

x = 2y-9    Eqn 2

Putting value of x from Eqn 2 in Eqn 1

(2y-9)+y=24\\2y-9+y=24\\3y=24+9\\3y=33

Dividing both sides by 3

\frac{3y}{3}=\frac{33}{3}\\y=11

Putting y=11 in Eqn 2

x=2(11)-9\\x=22-9\\x=13

There are 13 white marbles in the bag.

Keywords: linear equation, substitution method

Learn more about linear equations at:

  • brainly.com/question/9621364
  • brainly.com/question/9539036

#LearnwithBrainly

4 0
4 years ago
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