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Degger [83]
3 years ago
9

For the function f(x) = 2 - 3x, find f(-4). Options are in the picture.

Mathematics
1 answer:
Kitty [74]3 years ago
4 0
You just have to plug in -4 into
f(x) = 2 - 3x
This implies that,
f( - 4) = 2 - 3( - 4)


f( - 4) = 2  + 3(4)
f( - 4) = 2 + 12
f( - 4) = 14
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Jack and Jill were buying water jugs jack bought 2 medium sized jugs and 3 large sized jugs for 150 dollars and Jill bought 4 me
Mademuasel [1]

Answer: the cost of one medium sized jug is $60

the cost of one large sized jug is $10

Step-by-step explanation:

Let x represent the cost of one medium sized jug.

Let y represent the cost of one large sized jug.

Jack bought 2 medium sized jugs and 3 large sized jugs for 150 dollars. This means that

2x + 3y = 150 - - - - - - - - - - - 1

Jill bought 4 medium jugs and 12 large jugs for 360 dollars. This means that

4x + 12y = 360 - - - - - - - - - - - 2

Multiplying equation 1 by 4 and equation 2 by 2, it becomes

8x + 12y = 600

8x + 24y = 720

Subtracting, it becomes

- 12y = - 120

y = - 120/ - 12

y = 10

Substituting y = 10 into equation 1, it becomes

2x + 3 × 10 = 150

2x + 30 = 150

2x = 150 - 30 = 120

x = 120/2 = 60

3 0
3 years ago
Helpppppppppppp me I really need help
SIZIF [17.4K]
Irrational will be the answer
5 0
3 years ago
Find AB using the given matrices.
solniwko [45]

The entry in row 1, column 1 of \mathbf{AB} is

\begin{bmatrix}2&4\end{bmatrix}\begin{bmatrix}5\\6\end{bmatrix}=2\cdot5+4\cdot6=34

(i.e. the dot product of row 1 of \mathbf A and column 1 of \mathbf B)

The entry in row 1, column 2 of \mathbf{AB} is

\begin{bmatrix}2&4\end{bmatrix}\begin{bmatrix}-9\\-4\end{bmatrix}=2\cdot(-9)+4\cdot(-4)=-34

The second option is the correct answer.

5 0
3 years ago
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77julia77 [94]
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4 0
3 years ago
An is regularly at $80. It is on sale for 60 % off the regular priceHow much (in dollars ) is discounted from the regular price?
mezya [45]

Answer:

$48

Step-by-step explanation:

Let's find 60% of $80:

$80 × 0.60 = $48

Now subtract:

$80 - $48 = $32

$32 is the discounted price and

$48 is the amount that was taken off

$48.00 Will be the answer.

5 0
3 years ago
Read 2 more answers
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