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3 years ago

What is the scientific notation for 140000

1 answer:

6 0

You move the decimal point forward until it reaches the one so it looks like this:

1.4 x 10⁵

the exponent, 5, just tells you how many spaces the decimal point moved.

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Identify the property. ( x + y ) + z = x + ( y + z )

klemol [59]

Answer: Associative Property

Step-by-step explanation:

4 0

3 years ago

Use the exponential decay model, Upper A equals Upper A 0 e Superscript kt, to solve the following. The half-life of a certai

Akimi4 [234]

Answer:

It will take 7 years ( approx )

Step-by-step explanation:

Given equation that shows the amount of the substance after t years,

$A=A_0 e^{kt}$

Where,

$A_0$ = Initial amount of the substance,

If the half life of the substance is 19 years,

Then if t = 19, amount of the substance = $\frac{A_0}{2}$ ,

i.e.

$\frac{A_0}{2}=A_0 e^{19k}$

$\frac{1}{2} = e^{19k}$

$0.5 = e^{19k}$

Taking ln both sides,

$\ln(0.5) = \ln(e^{19k})$

$\ln(0.5) = 19k$

$\implies k = \frac{\ln(0.5)}{19}\approx -0.03648$

Now, if the substance to decay to 78% of its original amount,

Then $A=78\% \text{ of }A_0 =\frac{78A_0}{100}=0.78 A_0$

$0.78 A_0=A_0 e^{-0.03648t}$

$0.78 = e^{-0.03648t}$

Again taking ln both sides,

$\ln(0.78) = -0.03648t$

$-0.24846=-0.03648t$

$\implies t = \frac{0.24846}{0.03648}=6.81085\approx 7$

Hence, approximately the substance would be 78% of its initial value after 7 years.

5 0

2 years ago

What is the hypothesis of the following statement if a figure is a square,then it has four sides

Tanya [424]

Conditional statement

6 0

3 years ago

Write the linear inequatlity shown in the graph.The gray area represents the shaded region

MArishka [77]

In mathematics a linear inequality is an inequality which involves a linear function. A linear inequality contains one of the symbols of inequality: < is less than.

so the answer should be A.

5 0

3 years ago

The number of picces of art at the musem is shown in the table.

densk [106]

Answer:

The solution is multiple:

A. 15 artists with 2 paintings per artist.

B. 10 artists with 3 painting per artist.

C. 6 artists with 5 painting per artist.

D. 5 artists with 6 paintings per artist.

E. 3 artists with 10 paintings per artist.

F. 2 artists with 15 paintings per artist.

Statement and question complete:

The number of pieces of art at a museum is shown in the table.

Oil paintings 30

Photographs 24

Sketches 21.

The museum is hosting a show for July that features the oil paintings and each artist will show more than 1 painting. How many artists could be featured in the show?

Source: https://educationexpert.net/mathematics/929012.html

Step-by-step explanation:

x = Number of paintings per artist

y = Total number of paintings

x ≥ 2

xy = 30

The solution is multiple:

A. 15 artists with 2 paintings per artist.

B. 10 artists with 3 painting per artist.

C. 6 artists with 5 painting per artist.

D. 5 artists with 6 paintings per artist.

E. 3 artists with 10 paintings per artist.

F. 2 artists with 15 paintings per artist.

8 0

3 years ago