2 years ago

The expression 2d gives the grade that a student receives for d correct answers. What is the score for 10 correct answers?

Mathematics

1 answer:

Alex17521 [72]2 years ago

8 0

2 times 10 equals 20

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Step-by-step explanation:

$f(x)=\frac{1}{\sqrt{x} }\\f'(x)=-\frac{1}{2} x^{-\frac{3}{2}}\\\\f'(4)=-\frac{1}{2} 4^{-\frac{3}{2} }=-\frac{1}{2} \frac{1}{4^\frac{3}{2} } \\=-\frac{1}{2} *\frac{1}{8}=-\frac{1}{16} \\when x=4\\y=f(x)=\frac{1}{\sqrt{4} } =\frac{1}{2} \\\\eq.~ of ~tangent ~line~is\\y=-\frac{1}{2} -\frac{1}{16} (x-4)$

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1 solution

Step-by-step explanation:

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2 years ago

HELP RN.

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Step-by-step explanation:

packages-$12.36 x 2=24.72

broccoli-$1.98/2=.99

milk-$3.49

$24.72+.99=25.71

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2 years ago

In which quadrant or on which axis each of the following points lie.

AlekseyPX

Answer:

(-3,5) Quad 2

(4,-1) Quad 4

(2,0) Positive X axis

(2,2) Quad 1

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Step-by-step explanation:

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Question 9 of 10

Liula [17]

Answer:

Step-by-step explanation:

20x + 12 x =14x +30

20x - 14x = 30-12

6x= 18

6x/6 = 18/6

x = 3

so xs =3

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2 years ago