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Effectus [21]
3 years ago
7

a fish tank at a pet store has 8 zebra fish in how many different way s can nikki choose 3 zebra fish to buy

Mathematics
2 answers:
34kurt3 years ago
8 0

Answer: 56

Step-by-step explanation:

A P E X

liraira [26]3 years ago
6 0
This is 8C3.
8!/5!3!=8X7X6/3X2X1=56 ways
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the state sales tax in pennsylvania is 0.06 (or 6%). if your total bill at the music store included $3.03 in sales tax, how much
Sedbober [7]
The answer is: 50.5

Solution:

3.03 x 100 = 303
303 ÷ 6 = 50.5
3 0
3 years ago
Find the exact value of cot 7pi/4 & sec13pi/6 including quadrant location
Gennadij [26K]
First we will convert those radian angles to degrees, since my mind works better with degrees.  Let's work one at a time.  First, \frac{7 \pi }{4} * \frac{180}{ \pi }=315.  If we start at the positive x-axis and measure out 315 we end up in the 4th quadrant with a reference angle of 45 with the positive x-axis.  The side across from the reference angle is -1, the side adjacent to the angle is 1, and the hypotenuse is sqrt2.  The cotangent of this angle, then is 1/-1 which is -1.  As for the second one, converting radians to degrees gives us that \frac{13 \pi }{6} * \frac{180}{ \pi } =390.  Sweeping out that angle has us going around the origin more than once and ending up in the first quadrant with a reference angle of 30° with the positive x-axis.  The side across from the angle is 1, the side adjacent to the angle is √3, and the hypotenuse is 2.  Therefore, the secant  of that angle is 2/√3.
3 0
3 years ago
What is an equation that goes through the point (-7, 10) and is perpendicular to the line -2x-4y=9
algol13

Step-by-step explanation:

m1.m2= -1

(4y = -2x -9)= (y = -1x/2 -9/4)

-1/2.m2= -1

m2 = 2

formula = y - y1 = m2 ( x - x1)

y - 10 = 2 ( x - (-7))

y - 10 = 2x + 14

y = 2x + 24

7 0
3 years ago
10x +y =6 written in slope intercept form​
hodyreva [135]

Answer:

y = -10x + 6

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
A bag contains 5 black marbles, 7 blue marbles, 3 green marbles, 4 red marbles, and 1 white marble. A marble is selected and the
schepotkina [342]

Answer:

2/25

Step-by-step explanation:

It will be 20/400 + 12/400

=2/25

5 0
2 years ago
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