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
KiRa [710]
2 years ago
15

Look at the number line below.

Mathematics
1 answer:
forsale [732]2 years ago
4 0

Answer:

-1.166666667

Step-by-step explanation:

Since there are five lines in between -2 and -1 you need to divide 1 by 6 and when you do that you get .166666667. Since the point is on the first line you add that to one to get 1.166666667 and since it is on the negative side of the number line the number has to be negative.

You might be interested in
2.The number of grams A of a certain radioactive substance present at time, in yearsfrom the present, t is given by the formulaA
professor190 [17]

Answer:

Given that,

The number of grams A of a certain radioactive substance present at time, in years

from the present, t is given by the formula

A=45e^{-0.0045(t)}

a) To find the initial amount of this substance

At t=0, we get

A=45e^{-0.0045(0)}A=45e^0

We know that e^0=1 ( anything to the power zero is 1)

we get,

A=45

The initial amount of the substance is 45 grams

b)To find thehalf-life of this substance

To find t when the substance becames half the amount.

A=45/2

Substitute this we get,

\frac{45}{2}=45e^{-0.0045(t)}

\frac{1}{2}=e^{-0.0045(t)}

Taking natural logarithm on both sides we get,

\ln (\frac{1}{2})=-0.0045(t)^{}(-1)\ln (\frac{1}{2})=0.0045(t)\ln (\frac{1}{2})^{-1}=0.0045(t)\ln (2)=0.0045(t)0.6931=0.0045(t)t=\frac{0.6931}{0.0045}t=154.02

Half-life of this substance is 154.02

c) To find the amount of substance will be present around in 2500 years

Put t=2500

we get,

A=45e^{-0.0045(2500)}A=45e^{-11.25}A=45\times0.000013=0.000585A=0.000585

The amount of substance will be present around in 2500 years is 0.000585 grams

4 0
1 year ago
If a car is 13.5 feet long and there are 3 feet between each car, how many cars can be on a mile section of the highway?
Vikentia [17]

1 mile = 5,280 feet

Car + space = 13.5 + 3 = 16.5 feet

5,280 / 16.5 = 320

Answer: 320 cars

6 0
3 years ago
(4x+7)=(6x-63) whats value of x
Ivenika [448]

Answer:

35

Step-by-step explanation:

6x-4x= 2x

+63+7=70

70/2=35

3 0
3 years ago
Read 2 more answers
What is the mean,mode,range <br><br> 6,13,8,9,10,18,10,15,19
lesya [120]

Answer:

Mode-10

Mean-12

Range-13

Step-by-step explanation:

Mode is the most common which is 10

Mean is the averge so you add them all together then diviede based on how many numbers there are

Range is the difference between the smallest and biggest number so you just subtract. Biggest- smallest

4 0
3 years ago
What is the distance between (-3, -4) and (2,2)
LenKa [72]

Answer:

I did for you but I don't know you will understand my HANDWRITING or not .

:(

6 0
3 years ago
Read 2 more answers
Other questions:
  • Michelle received notice from her bank that her account balance was - $12. She then went to the bank and deposited her paycheck.
    7·2 answers
  • draw an array to show how to arrange 20 chairs into 5 equal rows. Explain what each part of the array represents.
    8·1 answer
  • How do you simplify, distribute and combine like terms?
    9·1 answer
  • You are buying balloons for a party. A small balloon costs ​$2. A large balloon costs ​$3. Write an algebraic expression for the
    13·2 answers
  • Find the area. will mark brainliest
    12·2 answers
  • 4.9 g = kg convert answer it plz
    14·2 answers
  • Chris Evans drives 300 miles per week in his Honda Civic that gets 22 miles per gallon of gas. He
    12·1 answer
  • Gordon has $395 in credit card debt. If Gordon makes no payments, his debt will increase by 2.5% each month. Which function can
    5·2 answers
  • What is 67% of $242.07?
    11·2 answers
  • 2m · 2n would be the same as _____.<br><br> A) 4 mn<br> B) 2 m + n<br> C) 2 mn<br> D) 2 m - n
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!