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3 years ago

F(-4) = 3x^2-2x pls help i dont know this question

Mathematics

1 answer:

musickatia [10]3 years ago

6 0

Step-by-step explanation:

f ( - 4) = 3 ( - 4) ² - 2( - 4)

=. 3 ( 16) + 8

=. 48 + 8 = 56

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hope this will be helpful to you.

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What is the smallest rotation clockwise about the center of the figure that will carry the entire figure onto itself.

postnew [5]

Step-by-step explanation:

A regular n-sided polygon has n axes of symmetry. The angle between two consecutive axes is 360° / n.

In the case of an octagon, the angle is 360° / 8 = 45°.

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2 years ago

Answers: a) 74 b) 108 c)49 d)51

lisabon 2012 [21]

Answer:

Step-by-step explanation:

sum of exterior angles = 360

64 + 60 + 69 + 42 + x + x +23 = 360

2x + 258 = 360

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3 years ago

Read 2 more answers

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3 years ago

How do I write an equation with two points?

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What you have to do is find the slope and the y intercept
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3 years ago

Andrew is about to leave for school. If he walks at a speed of 50 meters per minute, he will arrive 3 minutes after the bell rin

Mariana [72]

Answer:

The answer is: 13 minutes

Step-by-step explanation:

First Let us form equations with the statements in the two scenario

$time=\frac{distance}{speed}$

Let the time in which the bell rings be 'x'

1. If Andrew walks (50 meters/minute), he arrives 3 minutes after the bell rings. Therefore the time of arrival at this speed = (3 + x) minutes

$3 + x =\frac{distance}{50}\\distance = 50(3+x) - - - - - (1)$

2. If Andrew runs (80 meters/minute), he arrives 3 minutes before the bell rings. Therefore the time taken to travel the distance = (x - 3) minutes

$x - 3 = \frac{distance}{80} \\distance = 80(x-3) - - - - - (2)$

In both cases, the same distance is travelled, therefore, equation (1) = equation (2)

$50(3+x)=80(x-3)$

$150 +50x=80x-240\\$

Next, collecting like terms:

$150 + 240 = 80x - 50x\\390 = 30x\\30x = 390\\$

dividing both sides by 3:

x = 390÷30 = 13

∴ x = 13 minutes

7 0

3 years ago