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sergij07 [2.7K]
3 years ago
15

Tim must choose 4 graphic novels out of a collection of 13 to take on vacation.

Mathematics
2 answers:
Vsevolod [243]3 years ago
7 0

C(13,4)=\dfrac{13!}{4!9!}=\dfrac{10\cdot11\cdot12\cdot13}{2\cdot3\cdot4}=715

Kay [80]3 years ago
7 0

there are 715 ways to choose (C, 715)

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I need help plz someone help me solved this problem I need help ASAP! I will mark you as brainiest!
valina [46]

Answer: k = 12

<u>Step-by-step explanation:</u>

x² + kx + 36 = 0

In order for x to have exactly one solution, it must be a perfect square.

(x + √36)² = 0

(x + 6)² = 0

(x + 6)(x + 6) = 0

x² + 6x + 6x + 36 = 0

x² + 12x + 36 = 0

 k = 12

8 0
2 years ago
Please answer asap.will mark you as brainliest
shtirl [24]

Answer:

= and \leq and \geq

Step-by-step explanation:

Absolute value -9 is 9, but there is a negative sign so it is -9

-9=-9

Greater than or equal to works because of the equal sign.

Less than or equal to also works because of the equal sign.

8 0
3 years ago
How to find a rule with multiplication or division
MA_775_DIABLO [31]

Answer:

while multiplying or dividing intergers if the sings are the same the answer is positiv in the sings are differnt the answer is negitive

exaple 5 x -5 = -25

            5 / -5 = -1

            5 x 5 = 25

            5 / 5 = 1

4 0
3 years ago
Calculate the sales tax on the Sale Price for the Nike Air Max 270 React at 8.25%.
Wewaii [24]

Answer:

Men's Hyper Jade/Frosted is is $9.89, or $9.90 rounded up.

Spruce/Barely Volt is $12.37, or $12.40 rounded up.

Step-by-step explanation:

6 0
2 years ago
Y varies directly with x and y = 21 when x = 7.
Leviafan [203]
The answer is called beginning of end
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3 years ago
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