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ycow [4]
3 years ago
11

When Andrei surveyed 36 random seventh-grade students in the lunchroom, he found that 7 out of 9 would like to try or have

Mathematics
1 answer:
Alex73 [517]3 years ago
7 0

Answer:

About 630 seventh-grade students would like to snorkel

Step-by-step explanation:

if you do

7/9 x 90 equals 630/810 total students

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Lynn takes out a loan for $7540 that charges an annual simple interest rate of 6.5%. She does not make any payments for 2 1/2 ye
sp2606 [1]

Answer:

8765.25

Step-by-step explanation:

p=$7540

r=6.5%

t=2.5

simple interest formula= (p*r*t)/100

(7540*6.5*2.5)/100=1225.25

total amount= p+S.I

=7540+1225.25

=8765.25

thankyou^^

7 0
3 years ago
Elapsed time is 4 hours and 51 minutes, what is the start time?
Vlada [557]

Answer:

may 22

Step-by-step explanation:

6 0
3 years ago
Give an example of a line that is parallel to y=3x-4
Firdavs [7]
Maybe u should try a graph
4 0
3 years ago
If the heights of 300 students are normally distributed with mean 68.0 inches and standard deviation 3.0 inches, how many studen
Lunna [17]
Given:
μ = 68 in, population mean
σ = 3 in, population standard deviation

Calculate z-scores for the following random variable and determine their probabilities from standard tables.

x = 72 in:
z = (x-μ)/σ = (72-68)/3 = 1.333
P(x) = 0.9088

x = 64 in:
z = (64 -38)/3 = -1.333
P(x) = 0.0912

x = 65 in
z = (65 - 68)/3 = -1
P(x) = 0.1587

x = 71:
z = (71-68)/3 = 1
P(x) = 0.8413

Part (a)
For x > 72 in, obtain
300 - 300*0.9088 = 27.36

Answer: 27

Part (b)
For x ≤ 64 in, obtain
300*0.0912 = 27.36

Answer: 27

Part (c)
For 65 ≤ x ≤ 71, obtain
300*(0.8413 - 0.1587) = 204.78

Answer: 204

Part (d)
For x = 68 in, obtain
z = 0
P(x) = 0.5
The number of students is
300*0.5 = 150

Answer: 150

3 0
3 years ago
The length of one rectangle is 4 and the width is 2x-6. The length of another rectangle is 1/2 and the width is 6x+2. How much l
Assoli18 [71]
The answer is that the first one is not the longer one the second one is.
the first one equals 2
the second one equals 5
8 0
2 years ago
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