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Burka [1]
3 years ago
13

A khanacademy.org Differential equations: exponential model word problems You might need: Calculator A controversial story comes

out in the school newspaper. The number of students who have not heard about the story decreases at a rate that is proportional at any time to the number of students who have not heard the story at that time. There were 900 students who had not heard the story initially, and the number of students is divided by 3 every 4 days. How many students have not heard the story after 7 days? Round to the nearest student. students Stuck?
Mathematics
1 answer:
malfutka [58]3 years ago
4 0
The answer for this question is to be polite to people and he kind to the students .
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Round 796,154 to nearest 100,000
Triss [41]

Answer:

800,000

Step-by-step explanation:

The 9 makes the 7 round up making it 800,000.

4 0
3 years ago
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These ratios are equivalent: 3 days to 4 hours, and 9 days to 12 hours. True or false?
garik1379 [7]

Answer:

True

Step-by-step explanation:

I'm positive the answer is true

Basically, i kept adding 3 more days/4 more hours to see if it would still line up.

I really hope this helped :>

8 0
3 years ago
What number set does 0 belong to
GuDViN [60]

Whole, integer, and rational

3 0
3 years ago
. The mean incubation time for a type of fertilized egg kept at a certain temperature is 25 days. Suppose that the incubation ti
Paul [167]

Answer:

Step-by-step explanation:

Given that the  mean incubation time for a type of fertilized egg kept at a certain temperature is 25 days.

Let X be the incubation time for a type of fertilized egg kept at a certain temperature is 25 days.

X is N(25, 1)

a) Normal curve is in the attached file

b) the probability that a randomly selected fertilized egg hatches in less than 23 days

=P(X

we convert x into Z score and use std normal distn table to find probability

P(X

i.e. we can say only 2.5% proportion will hatch in less than 23 days.

8 0
3 years ago
Kaitlyn is making a quilt she purchased a 46 foot long piece of lace to sew around the edges of the quilt she needs 322 inches o
kupik [55]

Answer:

<u>19.17 feet</u> of lace will be leftover.

Step-by-step explanation:

Given:

Kaitlyn is making a quilt she purchased a 46 feet long piece of lace to sew around the edges of the quilt she needs 322 inches of lace for the quilt.

Now, to find the feet of lace will be leftover.

<u><em>Total feet of lace =</em></u> <u>46</u>.

Kaitlyn needs lace for the quilt = 322 inches.

So, by using conversion factor we change inches into feet:

12 inches = 1 foot.

322 inches = \frac{322}{12} =26.83\ feet.

<u><em>Feet of lace she need for the quilt =</em></u> <u>26.83</u>.

Now, to get the feet of leftover lace:

<u><em>Total feet of lace - feet of lace she need for the quilt</em></u>

=46-26.83

=19.17\ feet.

Therefore, 19.17 feet of lace will be leftover.

3 0
3 years ago
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