3 years ago

I NEED HELP NOWWWWW AHHHHHHHHH IM SO DUMB AND THANK YOU FOR HELPING ME

Mathematics

2 answers:

miv72 [106K]3 years ago

7 0

Answer:

Step-by-step explanation:

snow_lady [41]3 years ago

5 0

someone help me on my homework before i lose my sanity pls its my most recent question im done <3

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The temperature was 75 degrees. at noon, the temperature increased by 7. by evening the temperature decreased by 7

DIA [1.3K]

Answer:

Step-by-step explanation:

75 + 7 = 82

82 - 7 = 75

6 0

1 year ago

There are 20 students in the high school glee club. They need to pick four students to serve as

gayaneshka [121]

Answer:

4845 ways

Step-by-step explanation:

To solve this problem we use the formula of combinations

$nCr=\frac{n!}{r!(n-r)!}$

Where n is the total number of students that can be chosen and you choose r from them.

$n = 20\\r = 4$

Note that in this case the order in which the 4 students are chosen does not matter.

Then

$20C4=\frac{20!}{4!(20-4)!}$

$20C4=\frac{20!}{4!*16!}=4845\ ways$

6 0

3 years ago

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A light bulb manufacturer claims that the lifetime of the bulbs is normally distributed with a mean of 5000 hours and a standard

daser333 [38]

Answer:

Step-by-step explanation:

8 0

3 years ago

5. A community neighborhood wants to

Nastasia [14]

Answer:

51 trees

Step-by-step explanation:

Start at one end of the 50-foot line segment.

At position 0 ft, put one tree.

Then 1 ft from 0 ft, put tree number 2.

One more foot over, at position 2 ft from the start, put tree number 3.

Notice that each tree number is one more than the number of feet.

That means at 50 ft from the stat, you put tree number 51.

Answer: 51 trees

8 0

3 years ago

Please helppppppppppppppppp

Anika [276]

The answer will be 40. As it doubles twice during 220mins- 10 to 20 and then 20 to 40.

8 0

3 years ago