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3 years ago

Is y=x(x-1) a function

Mathematics

2 answers:

arsen [322]3 years ago

7 0

Answer:

Yes.

Step-by-step explanation:

y = x(x - 1) is a function.

If we draw a graph of the expression we get a parabola which is shaped like a U.

The graph passes the vertical line test for s function (that is - any vertical line drawn through the curve passes through the curve at only one point).

Fed [463]3 years ago

4 0

Yes it is a function
Y=x(x-1)
X(x-1)
X to the 2nd power -1x
Hope that’s helps

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Can someone pls help? ab to fail geometry. any help is nice.

Mamont248 [21]

By the law of cosines, the angle $C$ satisfies

$8.77^2=2^2+9^2-2\times2\times9\times\cos C$

which reduces to

$\cos C=0.2246\implies C=\arccos(0.2246)\approx1.34422\text{ rad}$

which converts to approximately 77 degrees (this can be done my multiplying by 180 and dividing by pi).

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3 years ago

Daja is packing her backpack for school. Her textbook weighs 1 ¼ pounds. Her notebooks weigh ¼ pound. Her other supplies weigh ¾

Shalnov [3]

Answer:

2 1/4 or 2.25

Step-by-step explanation:

1 1/4 + 1/4 = 1 2/4

1 2/4 + 3/4 = 2 1/4

6 0

2 years ago

Read 2 more answers

To print tickets, a printer chargers a $70 setup fee plus $1.25 per ticket. (a) Write an algebraic expression for the cost of t

ioda

A. 70+1.25t
b. Plug in 650 for t
70+1.25(650)
70+812.5
882.5

Final answer: $882.50

8 0

3 years ago

Please help ASAP really need this

Aleonysh [2.5K]

Answer:

$21.79 + c \leq 25$

Joshua can spend up to 3.21 on a card.

Step-by-step explanation:

$21.79 + c \leq 25$ is the correct equation because Joshua is spending 21.79 on flowers, a certain amount on the card, and the maximum he can spend is 25. That is why you use the less than or equal to sign.

To solve, first subtract 21.79 from both sides to get: $c \leq 3.21$ . This means that Joshua can spend up to 3.21 on a card.

Hope it helps!

3 0

3 years ago

What is 6.3-2(1.5c+4.1)

ASHA 777 [7]

$Expand\;-2\left(1.5c+4.1\right)$
$\mathrm{Distribute\:parentheses\:using}: \:a\left(b+c\right)=ab+ac$
$\;a=-2,\:b=1.5c,\:c=4.1$

$Simplify\;-2\cdot \:1.5c-2\cdot \:4.1 \ \textgreater \ \mathrm{Multiply\:the\:numbers:}\:2\cdot \:1.5=3$
$-3c-2\cdot \:4.1$

$\mathrm{Multiply\:the\:numbers:}\:2\cdot \:4.1=8.2 \ \textgreater \ -3c-8.2 \ \textgreater \ 6.3-3c-8.2$

$\mathrm{Subtract\:the\:numbers:}\:6.3-8.2=-1.9 \ \textgreater \ -3c-1.9$

Hope this helps!

7 0

3 years ago

Read 2 more answers