1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
OLga [1]
3 years ago
10

If A = James's present age, write an expression for his age seven years from now.

Mathematics
1 answer:
ehidna [41]3 years ago
3 0
<span>If A = James's present age
then
</span><span>his age seven years from now = A - 7

hope it helps</span>
You might be interested in
The data gives the responses of 15 students who were asked how many text messages they send in a day.
Lubov Fominskaja [6]
Noy completwly possitive what yhe quesrion is asking for but The number that shows up most often is 55 but the mean (average) is 50.06
8 0
3 years ago
A random sample of 36 students at a community college showed an average age of 25 years. Assume the ages of all students at the
Pavel [41]

Answer:

98% confidence interval for the average age of all students is [24.302 , 25.698]

Step-by-step explanation:

We are given that a random sample of 36 students at a community college showed an average age of 25 years.

Also, assuming that the ages of all students at the college are normally distributed with a standard deviation of 1.8 years.

So, the pivotal quantity for 98% confidence interval for the average age is given by;

             P.Q. = \frac{\bar X - \mu}{\frac{\sigma}{\sqrt{n} } } ~ N(0,1)

where, \bar X = sample average age = 25 years

            \sigma = population standard deviation = 1.8 years

            n = sample of students = 36

            \mu = population average age

So, 98% confidence interval for the average age, \mu is ;

P(-2.3263 < N(0,1) < 2.3263) = 0.98

P(-2.3263 < \frac{\bar X - \mu}{\frac{\sigma}{\sqrt{n} } } < 2.3263) = 0.98

P( -2.3263 \times {\frac{\sigma}{\sqrt{n} } < {\bar X - \mu} < 2.3263 \times {\frac{\sigma}{\sqrt{n} } ) = 0.98

P( \bar X - 2.3263 \times {\frac{\sigma}{\sqrt{n} } < \mu < \bar X +2.3263 \times {\frac{\sigma}{\sqrt{n} } ) = 0.98

98% confidence interval for \mu = [ \bar X - 2.3263 \times {\frac{\sigma}{\sqrt{n} } , \bar X +2.3263 \times {\frac{\sigma}{\sqrt{n} } ]

                                                  = [ 25 - 2.3263 \times {\frac{1.8}{\sqrt{36} } , 25 + 2.3263 \times {\frac{1.8}{\sqrt{36} } ]

                                                  = [24.302 , 25.698]

Therefore, 98% confidence interval for the average age of all students at this college is [24.302 , 25.698].

8 0
3 years ago
Please help the answers are <br><br><br> A) A<br> B) B<br> C) D<br> D) E
ipn [44]

Answer:

the answer po is letter c

Step-by-step explanation:

Tinatamad akong mag explain basta tama 'yan

7 0
3 years ago
Which of the following sets are continuous? Please help
Alecsey [184]

Answer:

A, C and D are continuous

Step-by-step explanation:

A is a set of any number x which 30 < x <=45

B is a set that contains only 3 and 7

C is a set of any number x which 60 <= x < 100

D is a set of any number x which -infinity < x < + infinity

E is a set that contains only even whole numbers

A continuous data set is a quantitative data set representing a scale of measurement that can consist of numbers other than whole number, like decimals and fractions.

7 0
3 years ago
Evaluate -30 divided by <br> -6. (1 point)<br> G<br> 5<br> 5<br> C<br> 6<br> Od
Lilit [14]

Answer:

5

Step-by-step explanation:

-30÷(-6) is the same as 30÷6

30÷6=5

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the slope of y=3x-10
    13·2 answers
  • Which one of these is the identity for addition?
    11·1 answer
  • Arc CD 2/3 of the circumstance of a circle. What is the radian measure of the central angle?
    14·1 answer
  • Credit cards and charge cards differ in two important ways. One is the method of payment. What is the other difference?
    6·1 answer
  • Please please please help!
    12·1 answer
  • Which equation BEST represents the line of best fit for the scatterplot?
    7·2 answers
  • ANSWER QUICK. I NEED ANSWER IN 5 MINUTES.​
    12·1 answer
  • LA= LD<br> True or false
    8·2 answers
  • Order the following decimals from greatest to least (separated by
    8·1 answer
  • Write the pair of fractions as a pair of fractions with a common denominater 3/10 1/2
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!