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3 years ago

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Determine if the equation x2 – y = 1 defines y as a function of x. No. At least one input results in two outputs. No. At least o

ne output results in two inputs. Yes. One output results in one input. Yes. One input results in one output.

1 answer:

posledela3 years ago

4 0

Yes. One input results in one output. the last choice is correct.
every x value will product only one y value.

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A sector of a circle makes a 127° angle at its centre. If the arc of the sector has length 36 mm, find

Veseljchak [2.6K]

Answer:

Approximately $68.5\; \rm mm$ .

Step-by-step explanation:

Convert the angle of this sector to radians:

$\begin{aligned}\theta &= 127^{\circ} \\ &= 127^{\circ} \times \frac{2\pi}{360^{\circ}} \\ &\approx 2.22\end{aligned}$ .

The formula $s = r\, \theta$ relates the arc length $s$ of a sector of angle $\theta$ (in radians) to the radius $r$ of this sector.

In this question, it is given that the arc length of this sector is $s = 36\; \rm mm$ . It was found that $\theta = 2.22$ radians. Rearrange the equation $s = r\, \theta$ to find the radius $r$ of this sector:

$\begin{aligned} r&= \frac{s}{\theta} \\ &\approx \frac{36\; \rm mm}{2.22} \\ &\approx 16.2\; \rm mm\end{aligned}$ .

The perimeter of this sector would be:

$\begin{aligned}& 2\, r + s \\ =\; & 2 \times 16.2\; {\rm mm} + 36\; {\rm mm} \\ =\; & 68.5\; \rm mm\end{aligned}$ .

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2 years ago

You buy tomatoes at

Anna71 [15]

Answer:

Expression:

1.20p + 3.99p

Now subsitutute p with the number of pounds given for both tomato and pepper.

1.20(5) + 3.99(2) = $13.98

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3 years ago

I don't understand this problem...like how to combine the k terms or how to get the answer.

creativ13 [48]

Answer:

-6 k +5

Step-by-step explanation:

-2k -4k +5

Think of k is apples

-2 apples -4 apples

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Curtis is twice as old as his brother Jonathan. Olivia is six years younger than Jonathan. The sum of their ages is 58 years.

liraira [26]

C=2 times j
c=2j
o=j-6
c+j+o=58

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2j+j+j-6=58
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add 6 to both sides
4j=64
divide both sides by 4
j=16

sub back

c=2j
c=2(16)
c=32

o=j-6
o=16-6
o=10

curtis=32
olivia=10
jonathan=16

equations are
c+j+o=58
c=2j
o=j-6

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3 years ago

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Use f(x) = 1 - 4x + 1). Find f(-5)

steposvetlana [31]

F(-5)=(1 - 4(-5) +1 )
=1+20+1
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3 years ago

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