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Zepler [3.9K]
3 years ago
13

Jeff weighed 190 pounds and lost 1/4 pound each week. Allan weighed 127 pounds and gained 5/8 pound each week. After how many we

eks did they weigh the same?​
Mathematics
1 answer:
STatiana [176]3 years ago
5 0

Answer:

oh i did this let me find my book

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How much would you need to deposit in an account now in order to have $4000 in the account in 15 years? Assume the account earns
Finger [1]

Answer:

$2500

Step-by-step explanation:

CA=p(1+MR÷1200)

4000=p(1+180×4÷1200) 15 yrs =15×12=180 month

4000=1.6p

p=4000÷1.6

p=2500

please give me brainliest

5 0
2 years ago
The commuting time for a student to travel from home to a college campus is normally distributed with a mean of 30 minutes and a
Rainbow [258]

Answer:

0.1587

Step-by-step explanation:

Let X be the commuting time for the student. We know that X\sim N(30, (5)^2). Then, the normal probability density function for the random variable X is given by

f(x) = \frac{1}{\sqrt{2\pi(5)^{2}}}\exp[-\frac{(x-\mu)^{2}}{2(5)^{2}}]. We are seeking the probability P(X>35) because the student leaves home at 8:25 A.M., we want to know the probability that the student will arrive at the college campus later than 9 A.M. and between 8:25 A.M. and 9 A.M. there are 35 minutes of difference. So,

 

P(X>35) = \int\limits_{35}^{\infty}f(x)dx = 0.1587

To find this probability you can use either a table from a book or a programming language. We have used the R statistical programming language an the instruction pnorm(35, mean = 30, sd = 5, lower.tail = F)

6 0
3 years ago
A class of 33 students elected a class treasurer. there were 111votes for candidate a and 15 votes for candidate
Advocard [28]

Since 111 is greater than 33, I will assume that you meant 11 votes for a candidate. Also, assuming that each student can vote only once, the answer would be

11/33 x 100=33.333333...

About 33.333 of the voters voted for candidate a.

3 0
3 years ago
7) Find the perimeter of triangle ABC. Round all answers to the nearest tenth.[6 points)
dsp73

Answer: 14.6

Step-by-step explanation:

I made a square around the triangle which I then counted the squares, found the Pythagorean theorem, and then added the missing sides together

6 0
2 years ago
What is the exact area of a circle with a diameter of 18 feet
marin [14]
A = π r^2
A = 9^2 <span>π
</span>A = 81<span>π 

if using </span>π = 3.14 then

A = 3.14 x 81 = 254.47 ft^2

answer: 81π ft^2 or 254.47 ft^2

hope that helps
6 0
3 years ago
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