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olganol [36]
3 years ago
15

PLEASE HELP!! Evaluate f(-7). f(x) = 3x2

Mathematics
1 answer:
julsineya [31]3 years ago
6 0

Answer:

f(- 7) = 147

Step-by-step explanation:

To evaluate f(- 7) substitute x = - 7 into f(x)

f(- 7) = 3(- 7)² = 3 × 49 = 147

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Letry. 14 Chapter 9: Chapter 9 rest Chapter Test
BaLLatris [955]

Answer:

h = 7.1 cm

Step-by-step explanation:

To find the height of the triangle, we can first find the area of the triangle using the Heron's formula:

S = \sqrt{p(p-a)(p-b)(p-c)}

Where a, b and c are the sides of the triangle and p is the semi perimeter of the triangle:

p = \frac{a+b+c}{2} = \frac{15 + 8 + 17 }{2} = 20\ cm

So the area of the triangle is:

S = \sqrt{20(20-15)(20-8)(20-17)}

S = 60\ cm^2

Now, to find the height, we can use the following equation for the area of the triangle:

S = base * height/2

The height draw in the figure is relative to the side of 17 cm, so this side is the value of base used in the formula. So we have that:

60 = 17 * h/2

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h = 7.06\ cm

Rounding to the nearest tenth, we have h = 7.1 cm

4 0
3 years ago
46 degrees (4x) degrees
motikmotik

Answer:

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Step-by-step explanation:

6 0
4 years ago
Read 2 more answers
La semana pasada Lol hizo en su pastelería 32kg de bollos de distintas clases. Un cuarto de los bollos de los bollos los vendió
PIT_PIT [208]

Answer:

$276  

Step-by-step explanation:

Given that

Last week Lola made 32kg of different kind of bun

The quarter of the bun sold at $9 per kilo

And, the rest would be sold at $8.5 per kilo

We need to find out the amount that should be collected in total from the sale

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Now If he sold those 8 buns for $9

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Now the remaining buns left is

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Now the final amount is

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3 years ago
Answer the question in the picture.
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Answer:

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Step-by-step explanation:

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Determine algebraically whether the function is even, odd, or neither even nor odd.
kobusy [5.1K]
The function is odd just substitute f(x) for f(-x) and replace all the x's with -x's then go back to the original problem and substitute f(x) for -f(x) and multiply the original problem by -1 and since f(-x) and -f(x) are equal, it is odd. if the original problem, f(x) and f(-x) were equal it would be even and if none of the three are equal it would be neither. the answer to this question is odd because f(-x) and -f(x) are equal.
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