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
aleksley [76]
3 years ago
5

The​ half-life of a radioactive substance is 27.7 years.

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
6 0

Answer:

N(t) = N₀·0.5^(t/27.7)

11.5 years

242.5 grams

Step-by-step explanation:

You might be interested in
If the selling price of a home is $505,000 with a 15% down payment, what is the amount of the down payment?$75,000$75,500$75,750
AlladinOne [14]

Answer

the down payment is $75,750

Explanation

The selling price of a house = $505, 000

The person made a 15% down payment

Down payment = 15% x $505, 000

Down payment = 0.15 x $505, 000

Down payment = $75, 750

Therefore, the down payment is $75,750

5 0
2 years ago
Pls help me, I really need help
jeka94

Answer:

i think it is b

Step-by-step explanation:

7 0
3 years ago
I don't know what to do I'm very confused ​
finlep [7]

Answer:

x = 33.8°

Step-by-step explanation:

The resulting diagram we have is a right triangle. To find x, apply trigonometric function.

Reference angle = x

Opposite = 116

Adjacent = 173

Apply TOA:

Tan x = Opp/Adj

tan (x) = \frac{116}{173}

x = tan^{-1}(\frac{116}{173})

x = tan^{-1}(\frac{116}{173})

x = 33.8° (nearest tenth)

7 0
3 years ago
Which ratios are equal to 64 when the scale factor is 8? Select all that apply.
Luden [163]

Answer:

The scaled surface area of a square pyramid to the original surface area.

The scaled area of a triangle to the original area.

Step-by-step explanation:

Suppose that we have a cube with sidelength M.

if we rescale this measure with a scale factor 8, we get 8*M

Now, if previously the area of one side was of order M^2, with the rescaled measure the area will be something like (8*M)^2 = 64*M^2

This means that the ratio of the surfaces/areas will be 64.

(and will be the same for a pyramid, a rectangle, etc)

Then the correct options will be the ones related to surfaces, that are:

The scaled surface area of a square pyramid to the original surface area.

The scaled area of a triangle to the original area.

5 0
3 years ago
Wahaj buys a pizza for rs 800.A week later,the same piza costs rs 900.When wahaj asks the manger for the reason ,he explain that
lions [1.4K]

Answer:

12.5%

Step-by-step explanation:

The price increased from 800 to 900. So what is the PERCENTAGE INCREASE??

The increase is 900 - 800 = 100

To find this in terms of original, we need to divide 100 by 800 and multiply by 100 to get the "percentage". Let's do it:

\frac{100}{800}*100=12.5

So the increase is 12.5% and thus the general sales tax is 12.5%

6 0
3 years ago
Other questions:
  • 8/12 in simplest form
    14·2 answers
  • Is my answer correct
    7·1 answer
  • Which recursive formula can be used to generate the sequence shown, where f(1) = 5 and n > 1?
    13·2 answers
  • Kathleen says that quadrilaterals have right angles Gray says that quadrilaterals do not have to have right angles explain who i
    12·1 answer
  • WILL MARK BRAINLIEST!!! A class of seventy students voted for class president. 30% voted for Steve and 70% voted for Wendy ?. Ho
    15·2 answers
  • What is the quotient of 0.72 ÷ -0.9
    13·2 answers
  • Which graph represents the equation y = x2 + 1?
    11·1 answer
  • Please help me please i really need help please
    9·2 answers
  • Can someone explain these questions to me, especially the last one please.​
    13·1 answer
  • I need help please!
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!