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2 years ago

I'm a student at LUOA and, this is way too hard. Can someone help me, please?

Mathematics

1 answer:

puteri [66]2 years ago

6 0

The answer is the first one.

Knowing that population density is like a rate, people per a given area, you would take the amount of people and divide by the area.

3.11E7/7.69E6 = 4.02 people per km squared.

Also the “E” is another way to write times 10 to a power and I recommend using that notation when plugging it into a calculator.

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a driver was fined $20.00 plus $4.00 for every mile per hour over the speed limit of 55 mph. is the fine was $76, how fast was t

Ksenya-84 [330]

20+4x=76 subtract 20 from both sides

4x=56 divide both sides by 4

x=14

So he was driving at 55+14=69 mph

3 0

4 years ago

Time sensitive mark best as brainiest

ycow [4]

Answer:

4986 ounces/m³

Step-by-step explanation:

1 kilogram = 35.274 ounces

1 cubic foot = 0.0283 cubic metre

We are converting kg/ft³ to ounces/m³

Hence:

4kg/ft³ × 35.274 ounces/ 1 kg × 1 ft³/0.0283m³

= 4985.7243816 ounces/m³

Approximately to the nearest whole number = 4986 ounces/m³

6 0

3 years ago

Simplifying an Expression with the Numerator and the Denominator Raised to a Power

slamgirl [31]

Answer:

The answer to your question is the second option $\frac{1}{x^{48}y^{36}z^{6}}$

Step-by-step explanation:

Expression

$[\frac{(x^{2}y^{3})^{-2}}{(x^{6}y^{3}z)^{2}}]^{3}$

Process

1.- Divide the fraction in numerator and denominator

a) Numerator

[(x²y³)⁻²]³ = (x⁻⁴y⁻⁶)³ = x⁻¹²y⁻¹⁸

b) Denominator

[(x⁶y³z)²]²= (x¹²y⁶z²)³ = x³⁶y¹⁸z⁶

2.- Simplify like terms

a) x⁻¹²x⁻³⁶ = x⁻⁴⁸

b) y⁻¹⁸y⁻¹⁸= y⁻³⁶

c) z⁻⁶

3.- Write the fraction

$\frac{1}{x^{48}y^{36}z^{6}}$

6 0

3 years ago

Who could help me solve this?<br><br> Y=log x<br><br> If y=10, then what is x?

Viktor [21]

Step-by-step explanation:

$y = log \: x \\ \\ \therefore \: 10 = log \: x \\ \therefore \: {e}^{10} = x \\ \\ \therefore \: x = {e}^{10} \\$

6 0

3 years ago

Eve is making a bird house. To make the walls she takes a piece of wood and cuts it into 4 pieces in the ratio 5:6:6:7. The long

allsm [11]

Answer:

The original piece of wood is 108 cm

Step-by-step explanation:

From the given ratio, the shortest is of the ratio 5 and the longest is of the ratio 7

Let the original piece of wood be x

so the sum of the ratios will be;

5 + 6 + 6 + 7 = 24

the shortest length would be 5/24 * x

= 5x/24

the longest will be 7/24 * x = 7x/24

From the question;

7x/24 -5x/24 = 9

(7x-5x) = 24(9)

2x = 24(9)

x = (24 * 9)/2

x = 108 cm

4 0

3 years ago