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
-BARSIC- [3]
3 years ago
8

Scarlet deposited $500 in a savings account with simple interest. One year later she had earned $30 in interest. What was the in

terest rate?
Mathematics
1 answer:
ivanzaharov [21]3 years ago
3 0

Answer:

6%

Step-by-step explanation:

Interest = Principal x Rate x Time (in years)

30 = 500r

r = 3/50 or 6/100 which is 6%

You might be interested in
Fencing with the length of 840 m surrounds two identical playing fields with a common side. The fields can be side-by-side and s
pshichka [43]

Answer:

x = 140   y = 105                x · y = 14700 m²

Step-by-step explanation:

good question

it looks like 3 sides of length x

and 4 sides of length y

area 1 = area 2

and the length of all the sides sum to 840

  3x + 4y = 840      find the maximum area = 2· x · y

This is a calculus problem that I can't remember how solve

 if x = 0   y = 210

           if   y = 0   x = 280       280 / 2 = 140   the mid-point  the logical answer

if x = 140   y = 105                x · y = 14700 m²         this appears to be the max

if x = 135   y = 108.75            x · y = 14681.25 m²      smaller area

if x = 145   y = 101.25             x · y = 14681.25 m²      smaller area

I need an eqaution with a quadratic and take the first derivative

 y = (840 - 3x) / 4      xy = max area     y = max area/x

(max area) / x = (840 - 3x) / 4      solve for x

    max area  = x(840 - 3x) / 4

    max area  = [840x/4 - 3x²/4] '        

    max area  = 210x  -  3x²/4            take the first derivative  

    max area  = 210  -  6x/4               maximum occurs when slope = 0

           0   =  210 - 3x/2    

        3x/2 = 210

           x  = 210·2/3

           x  = 420 / 3

          x  = 140   y = 105

3(140) + 4(105) =   420 + 420  = 840    checks

7 0
3 years ago
I can’t figure this out
Neporo4naja [7]

Answer:d

Step-by-step explanation:it is d -2 2/3 is the lowest

5 0
3 years ago
John randomly picks a number from 1 to 5 (both inclusive) and a letter from A to E (both inclusive). What is the probability tha
Greeley [361]

Answer:

P(A \cap B) = P(A) *P(B) =\frac{1}{5} \frac{1}{5}= \frac{1}{25}

So then the best option would be:

a. 1/25

Step-by-step explanation:

For this case we assume that the sample space for the numbers is :

S_1= [A,B,C,D,E]

And the sample space for the numbers is:

S_2 =[1,2,3,4,5]

Both sampling spaces with a size of 5.

We define the following events:

A="We select a 2 from the numbers"

B= "We select a E from the letters"

We can find the individual probabilities for each event like this:

P(A)= \frac{1}{5}

P(B) = \frac{1}{5}

And assuming independence we can find the probability required like this:

P(A \cap B) = P(A) *P(B) =\frac{1}{5} \frac{1}{5}= \frac{1}{25}

The last probability is the probability of obtain obtain a 2 AND an E

So then the best option would be:

a. 1/25

3 0
4 years ago
Read 2 more answers
Please help me! Im really confused!
KATRIN_1 [288]

Answer:

4) 8:1

Step-by-step explanation:

well on the first perfect point there are 8 cups of raspberry juice and 1 cup of lemon-lime soda and it is comparing them in that order so since 1 is the unit it would be 8:1

5 0
3 years ago
Read 2 more answers
Choose the best estimate for the capcity of a bath tub
NISA [10]

Answer:

Choose the best estimate for the capacity of a bath tub

A. 5 ml

B. 500 ml

C. 50 cl

<u>D. 500 L</u>

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • The perimeter of Macy's rectangular room is 40 feet. Two sides of the room measure 8 feet. How long are the other two sides?
    13·1 answer
  • Find the area of the figure. Round to the nearest tenth if necessary​
    9·1 answer
  • What is the sum of 3/20+ the square root of 10
    11·1 answer
  • The area of a triangle is 75 square feet if the height is 5 feet longer than the base find the dimension of the height
    7·1 answer
  • Please help <br> NO LINKS PLEASE
    7·1 answer
  • Find the distance between the points (1,5) and (-7,-10)
    11·1 answer
  • Please help me thanks
    5·2 answers
  • Using factoring, what is the solution set to the equation t2−7t+12=0?
    15·1 answer
  • Complete the table<br> Fraction Percentage Decimal<br> 1/5<br> 25% <br> 1/2 <br> 66.6 0.6
    11·1 answer
  • The two lines below are parallel. If the slope of the red line is 3, what is the
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!