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
uysha [10]
2 years ago
13

Sammi practiced piano for 23 minutes on Monday, 37 minutes on Tuesday and 42 minutes on Thursday. Her piano teacher wants to kno

w about how many minutes she spent practicing total. Which of these shows how she can estimate the answer by rounding the addends?
Mathematics
1 answer:
11111nata11111 [884]2 years ago
8 0

Answer:

i d k this stuff :(

Step-by-step explanation:

You might be interested in
Molly opened a savings account with a one‐time deposit of $100 that will be left in the account for at least 5 years. The saving
Anettt [7]

The amount of interest Molly will earn after 5 years on a deposit of \$100 compounded annually over 5 years is \$27.63

First, we need to find the future value of her investment, then we subtract the original deposit from it to get the amount of interest she will get at the end of 5 years.

The future value of an investment that is compounded annually is given by

A=P(1+r)^t

where

A=\text{Amount of money in Molly's account after 5 years}\\P=\text{Molly's initial deposit into her account}=\$500\\r=\text{The annual interest rate as a decimal}=0.05\\t=\text{The time the money is invested (in years)}=5

Substituting the available values into the formula and solving

A=100(1+0.05)^5=100(1.05)^5 \approx \$ 127.63

The interest Molly will earn after 5 years is

A-P=\$127.63-\$100=\$27.63

Therefore, the amount of interest Molly will earn after 5 years on a deposit of \$100 compounded annually over 5 years is \$27.63

Learn more about compound interest here: brainly.com/question/21270833

8 0
3 years ago
A scientist has a sample of the radioactive isotope bismuth-212. The isotope decays exponentially as shown in the table. Time (s
luda_lava [24]

Answer:

f(x) = 30 • 0.989x

Step-by-step explanation:

Given the data :

10 26.8

20 23.9

30 21.3

40 19

50 16.9

60 15.1

Using technology, the exponential model equation obtained by plotting the data is :

y = 30.068(0.989)^x

Based on the general exponential formula :

y = ab^x

y = predicted value

Initial value, a = 30.068

Rate = b = 0.989

The most appropriate model equation from the options given is :

f(x) = 30 • 0.989^x

7 0
3 years ago
Workout the area of the quarter of a circle with a radius of 8
QveST [7]

Answer:

16\pi

Step-by-step explanation:

We need to find 1/4 of the area of a circle with a radius of 8

Let r be radius

Area of a circle = r^{2} \pi

Substitute r with 8

Area of a circle = 8^2\pi =64\pi

Now, to find 1/4 of the area, we can create an equation \frac{64\pi }{4}={16\pi

The answer is 16\pi

Hope this helps :)

Have a spectacular day!

3 0
3 years ago
Read 2 more answers
In the diagram, which pair of angles are vertical angles?
dusya [7]
Angles 1 and 3, angles 2 and 4, angles 5 and 7, and angles 6 and 8. They are also congruent, because vertical angles are congruent.
5 0
3 years ago
Find the equation of this line in slope intercept form y-2=1/2(x+8)
Andrews [41]
Answer
Root-(-12,0)
Vertical intercept- (0,6)
7 0
3 years ago
Other questions:
  • Ten years ago ago, you could buy a loaf of bread for $1.21. Twenty years ago, you could buy a loaf of bread for $0.92. What is t
    7·1 answer
  • A=1/2(B+b)h ; solve for b.
    15·1 answer
  • Rafael Drive 405 miles using 20 gallons of gas. At that rate, how many gallons of gas would he need to drive 243 miles?
    14·1 answer
  • If the angle of angle one is 24 then the measure of angle 4 is
    6·1 answer
  • Jaylin's test grades in History class are: 92, 89, 85, 89, and 90. The semester final will count as IWULUI.
    8·1 answer
  • PLEASE CHECK THIS WILL MARK BRAINLIEST
    11·2 answers
  • PLEASE HELP ASAP A bucket contains 48 fluid ounces of water. How many quarts of water does the bucket contain? Enter your answer
    5·1 answer
  • Joseph left the house at 11:17 A.M and returned at 12:45 P.M how many minutes was joseph gone from the house
    5·1 answer
  • F(x) = x2 - 4x – 8,<br> Graph
    5·1 answer
  • PLEASE HELPPP ASAAP There is a picture above
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!