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vovikov84 [41]
3 years ago
5

Evaluate f(x) = –x2 + 1 for x = –3.

Mathematics
1 answer:
Katarina [22]3 years ago
3 0

The answer to this

is -8

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Which of the following represents 2x-5y+15=o written in slope-intercept form? Y=-2/5x+3. Y=2/5x-3. Y=2/5x+3
likoan [24]
The second one is the correct answer.
4 0
3 years ago
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tatuchka [14]

Answer:

y = -2x + 3

Step-by-step explanation:

Let's just put the three points together.

(-1, 5) (-4, 11) (-7, 17)

First, let's find the slope with y2 - y1/x2 - x1

Plug in using (-1, 5) and (-4, 11)

11 - 5/-4 + 1 = 6/-3 (simplify)

-2 is the slope

Now plug in (-7, 17) in the equation to get b or the y-intercept)

y = mx + b

17 = -2(-7) + b

17 = 14 + b (subtract 14 on both sides)

3 = b

y = -2x + 3

8 0
3 years ago
16. Mum went shopping at the vegetable stand.
kondaur [170]

Good evening

Answer:

<em>a) the cost of one apple is €</em><em>0.9</em>

<em>b) the cost of one pineapple is €</em><em>5.4</em>

<em>c) the cost of two pineapples and six apples is €</em><em>16.2</em>

Step-by-step explanation:

Consider P the price of a pineapple

               A the price of an apple

A pineapple costs six times as much as an apple means P = 6A

Mum paid €7.20 for one pineapple and two apples means P + 2A = 7.20

then

6A + 2A = 7.20

then

8A = 7.20

then

A = €0.9  

Since P = 6A then P = 6×(0.9) = €5.4

the cost of two pineapples and six apples

= 2P + 6A

= 2P + P

= 3P

= 3×(5.4)

= €16.2

     

7 0
3 years ago
Party punch cost $2.50 per half gallon. How much would 6 gallons cost!!!!! HELP ASAP DUE AT MIDNIGHT
Montano1993 [528]

Answer:

2.50 times 2 is 5. $5 is now 1 gallon. 5 time 6 equal $30. $30 dollar is your answer. Please mark brainly!!

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The area on a wall covered by a rectangular poster is 270 square inches. The length of the poster is 1.2 times longer than the w
forsale [732]

Answer:

Length = 18 in

Width = 15 in

Step-by-step explanation:

We have that the area of a rectangle is:

A = L * W

but L = 1.2 * W

A = 1.2 * (W ^ 2)

1.2 * (W ^ 2) = 270

(W ^ 2) = 270 / 1.2

W ^ 2 = 225

Therefore, W is equal to:

W = 225 ^ (1/2)

W = +/- 15, but only +15 makes sense

W = 15

Now for L:

L = 1.2 * 15

L = 18

A = 15 * 18 = 270 in ^ 2

4 0
3 years ago
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