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olya-2409 [2.1K]

3 years ago

14

If you were a biologist counting very large numbers of cells as part of your research get several reasons why you like that for

to record yourself pounds in scientific notation said of standard notation

1 answer:

Nastasia [14]3 years ago

8 0

If it was in standard notation it would be very confusing to add the number of cells and it would be less organized.

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What is the area of this polygon?

murzikaleks [220]

Answer:

40 cm^2.

Step-by-step explanation:

Area = the sum of the 2 triangles

= 1/2 * 6 * 8 + 1/2 * 4 * 8

= 24 + 16

= 40 cm^2.

7 0

3 years ago

What is the area of the figure? Please show work?

WARRIOR [948]

Answer:

Area of ΔABC = 144 ft^2

Step-by-step explanation:

ΔABC is 45 45 90 right triangle

Ratio of leg (AC, BC) : hypo (AB) = x : x√2

Given hypo AB = 24 so AC = BC = 12√2

Area of ABC = 1/2 bh

= 1/2 ( 12√2)( 12√2)

= 1/2(144 * 2)

= 144 ft^2

3 0

3 years ago

A chemist needs 2,220 ml of potassium chloride to complete an experiment. She has 2 L. How many more liters does she need?

DerKrebs [107]

Answer:

0.220 L

Step-by-step explanation:

One liter is 1000 mL, so 2,220 mL is 2.220 L. Subtracting the 2 L on hand gives the additional amount required:

2.220 L - 2 L = 0.220 L

_____

The nice thing about metric units is that conversion factors are often powers of 10, so only movement of the decimal point is required. It can be worthwhile to become familiar with the SI prefixes.

7 0

3 years ago

In airline applications, failure of a component can result in catastrophe. As a result, many airline components utilize someth

gulaghasi [49]

Answer:

1. 0.99993108.

2. 6 components.

Step-by-step explanation:

(a) Probability of 1 component failing = 0.041

So the probability of the whole system failing = 0.041^3.

Therefore the probability of not failing

= 1 - 0.041^3 = 0.99993108.

(b).

Try 5 components:

1 - 0.041^5 = 0.99999988

6:

1 - 0.041^6 = 0.9999999952.

So the answer is 6 components.

7 0

3 years ago

The loudness, L, measured in decibels (Db), of a sound intensity, I, measured in watts per square meter, is defined as L = 10 lo

Inessa [10]

Answer:

50 Db

Step-by-step explanation:

we know that

The loudness in decibels is given by the formula

$L = 10log(\frac{I}{I_0})$

where

I = sound intensity in watts per square meter (Watts/m^2)

I₀ = reference intensity, = 10^(-12) Watts/m^2

so

For I=10^(-7) Watts/m^2

substitute in the formula above and solve for L

$L = 10log(\frac{10^{-7} }{10^{-12}})$

$L = 10log(10^{5})$

$L = 10 (5)=50\ Db$

7 0

3 years ago

Read 2 more answers