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vladimir2022 [97]
3 years ago
15

240 seventh graders and two-thirds of the students participate in after-school activities How many students participate in after

-school activities
Mathematics
1 answer:
LekaFEV [45]3 years ago
8 0

Answer:

160

Step-by-step explanation:

is there 240 seventh graders in total? If so all you have to do is:

240 x 2/3

which equals 160 seventh graders.

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Please help me!.!.!.!.!.!.!!.!.!.!.!.
maksim [4K]
It's 2/3 because you keep it, change it, flip it and that would make 5/6•4/5= 2/3
3 0
3 years ago
When dragons on planet Pern lay eggs, the eggs are either green or yellow. The biologists have observed over the years that 21%
Elan Coil [88]

Answer:

usual number of yellow eggs = 12

Usual maximum = 21

Usual minimum = 3

Step-by-step explanation:

To solve this, we will use the expected value of a binomial probability.

The formula is;

E(X) = np

Where;

n is sample size

p is probability of success.

We are given;

n = 58

p = 21%

Thus;

usual number of yellow eggs in samples = np = 58 × 21% = 12.18 ≈ 12

From USL(Upper specification limit) and LSL(Lower specification limit) formula, we can find the maximum usual number and minimum usual number of eggs respectively.

Thus;

USL = n(p + 3√(p(1 - p)/n)

USL = 58(0.21 + 3√(0.21(1 - 0.21)/58)

USL = 21.48 ≈ 21

LSL = n(p - 3√(p(1 - p)/n)

LSL = 58(0.21 - 3√(0.21(1 - 0.21)/58)

LSL = 2.87 ≈ 3

4 0
3 years ago
I NEED HELP AP STATS THANK YOU!!
artcher [175]

Answer:

it is true :)

Step-by-step explanation:

6 0
3 years ago
Distributive property of 1/2(8x+2)
sdas [7]

Answer:

4x+1

Step-by-step explanation:

1/2 *(8x+2)=1/2*8x+1/2*2=4x+1

5 0
3 years ago
Elena and Jada are 12 miles apart on a path when they start moving towards each other Elena runs at a constant speed of 5 miles
Leviafan [203]
If you really want to figure this out you make an equation to solve for the time
let's let
x = time from Elena to Jada and
x = time from Jada to Elena
12 then the equation
12 = 5x +3x
would help figuring out their distance say for one of them
12 = x(5+3)
12/8 = x
1.5 = x
1. 5 hours they will meet up
7 0
3 years ago
Read 2 more answers
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