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nikdorinn [45]
4 years ago
6

How many ways can 3 students be chosen from a class of 20 to represent their class at a banquet?

Mathematics
2 answers:
inysia [295]4 years ago
7 0
60 ways because the easy way to solve this problem is identify the numbers being used and than multiply them by each other.
boyakko [2]4 years ago
3 0
Slot method 20 options 3 slots First slot: 20 options Second slot: 19 options (one used up for 1st slot) Third slot: 18 (one less than last) Multiply them 20 times 19 times 18=6840 Answer is 6840 ways
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If a quadratic function has x-intercepts at (-7,0) and 10,0), where would
madam [21]

Answer:

x = 1.5

Step-by-step explanation:

Since the axis of symmetry is between the 2 x intercepts, we can find it by finding the average of the x-coordinates of the 2 points.

(-7 + 10) / 2

3/2

= 1.5

So, the axis of symmetry is at x = 1.5

8 0
3 years ago
There were 3232 volunteers to donate blood. Unfortunately, nn of the volunteers did not meet the health requirements, so they co
Degger [83]

Answer:

\frac{470}{32-n}  

Step-by-step explanation:  

We have been given that there were 32 volunteers to donate blood. Unfortunately, n of the volunteers did not meet the health requirements, so they couldn't donate.            

So the number of volunteers that donated blood will be 32-n.

We are also told that the rest of the volunteers donated 470 milliliters each.

To find the units of blood donated by each of the volunteers we will divide total units of donated blood by number of volunteers, who donated the blood (32-n).

\text{Millimeters of blood donated by each volunteer}=\frac{470}{32-n}  

Therefore, each of the volunteers donated \frac{470}{32-n} millimeters of blood.  

5 0
3 years ago
Read 2 more answers
Each of the past 8 days, Karen traveled 59.4 miles. How many miles did she travel in all?
madam [21]

Answer:

439.2 miles

Step-by-step explanation:

multiply the days she traveled to the amount of mile she traveled a day

8×59.4 =439.2 miles

6 0
2 years ago
Will someone please solve this. Give answer in form of square root.
aleksklad [387]
The answer is : 46.4758001545 ( in square root )
3 0
3 years ago
HELPPPPPPPPPPPPPPPP
Kitty [74]

Answer:

He can make 3 batches of soup.

Step-by-step explanation:

Starting with 10 pounds of tomatoes and taking out the number of pounds he sets aside for spaghetti sauce, 2.8, we have:

10-2.8 = 7.2 pounds left.

0.2 is read as "two tenths," so 7.2 = 7 2/10

We divide this remaining number of pounds by 2 2/5 for each batch of soup:

7 2/10 ÷ 2 2/5

Convert each to an improper fraction:

72/10 ÷ 12/5

Multiply by the reciprocal:

72/10 × 5/12 = 360/120 = 3

7 0
3 years ago
Read 2 more answers
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