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3 years ago

13

Find the decimal that is equivalent to 1/15

1 answer:

amm18123 years ago

3 0

Your answer should be c

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Many smoke detectors contain:

Yanka [14]

Answer:

Option B, Americium-241, is the right answer.

Step-by-step explanation:

A device which senses smoke usually as an indicator of fire is known as a smoke detector.
The two most common types of smoke detectors are the Ionization chamber and photoelectric smoke indicators.
Many of these smoke detectors comprise some amount of americium-241, which is a radioactive substance.
These smoke detectors respond immediately to fires that give off some smoke.

3 0

4 years ago

19 over 40 equals ? over 10

KATRIN_1 [288]

19/40=x/10
40x=190
x=4.75

5 0

3 years ago

if 10 800 cm2 of material is available to make a box with a square base and an open top find the largest possible volume of the

lubasha [3.4K]

Let

x--------> the length side of the square base of the box

y-------> the height of the box

we know that

The surface area of the box is equal to

$SA=4xy+x^{2}$

$SA=10,800\ cm^{2}$

so

$10,800=4xy+x^{2}$

$y=(10,800-x^{2})/(4x)$

$y=(2,700-0.25x^{2})/(x)$ --------> equation A

the volume of the box is equal to

$V=x^{2}y$ --------> equation B

Substitute the equation A in the equation B

$V=x^{2}*(2,700-0.25x^{2})/(x)$

$V=x*(2,700-0.25x^{2})$

$V=(2,700x-0.25x^{3})$

using a graphing tool

see the attached figure

For $x=60\ cm$

$Volume=108,000\ cm^{3}$

the point $(60,108,000)$ is a maximum of the function

<u>Find the dimensions of the box </u>

$x=60\ cm$

Find the value of y

$V=x^{2}y$

$y=V/x^{2}$

$y=108,000/60^{2}$

$y=30\ cm$

<u>The dimensions of the box are</u>

$60\ cm*60\ cm*30\ cm$

<u>The largest possible volume of the box is</u>

$108,000\ cm^{3}$

7 0

3 years ago

Read 2 more answers

The formula d=rt gives the distance traveled in time t at rate r. A delivery truck drives for 1.5 hours and travels 76 miles.

maks197457 [2]

Answer:

50.7 miles per hour

Step-by-step explanation:

I ve seen this question before

4 0

3 years ago

Solve this math mathematics problem –8z – 14z

Ivanshal [37]

The answer to your question is -22z

6 0

3 years ago