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1 year ago

It is 2.8km from David’s house to the nearest mailbox. How far is it in meters?

Mathematics

1 answer:

Ganezh [65]1 year ago

5 0

Solution

Distance in km = 2.8 km

Distance in m = 2.8 x 1000m

Distance in m = 2,800m

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Salsk061 [2.6K]

Answer:

I think that the answer's B

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3 years ago

There are approximately 7.7 billion humans on Earth. If the virus spreads beyond the 200-person town, how long will it be until

eimsori [14]

Answer:

25.2 weeks until everyone on the planet is infected

Step-by-step explanation:

The number of infected people after t weeks has the following format:

$P(t) = P(0)(1+r)^{t}$

In which P(0) is the initial number of infected people and r is the growth rate, as a decimal.

The number of infected people doubles every week

This means that $P(1) = 2P(0)$

$P(t) = P(0)(1+r)^{t}$

$2P(0) = P(0)(1+r)$

$1 + r = 2$

$r = 1$

$P(t) = P(0)*(2)^{t}$

200-person town

This means that $P(0) = 200$

$P(t) = P(0)*(2)^{t}$

$P(t) = 200*(2)^{t}$

How long will it be until everyone on the planet is infected?

This is t for which P(t) = 7700000000[/tex]

$P(t) = 200*(2)^{t}$

$7700000000 = 200*(2)^{t}$

$2^{t} = \frac{7700000000}{200}$

$\log{2^{t}} = \log{\frac{7700000000}{200}}$

$t\log{2} = \log{\frac{7700000000}{200}}$

$t = \frac{\log{\frac{7700000000}{200}}}{\log{2}}$

$t = 25.2$

25.2 weeks until everyone on the planet is infected

4 0

3 years ago

Hi can someone please answer this for me thanks xoxo will mark brainliest

Artemon [7]

Answer:

1. 3.6 times 10 -4 2. 800;0 the last one is 7.92 times 10 7

Step-by-step explanation:

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3 years ago

Find the measures of the interior angles of the triangle.

Sauron [17]

Answer:

x = 88

The measurement of the other unknown angle is = 44°

Step-by-step explanation:

The sum of interior angles in a triangle is equal to 180°

48 + x + x - 44 = 180 add like terms

4 + 2x = 180 subtract 4 from both sides

2x = 176 divide both sides by 2

x = 88

Now to find the measure of two other angles we replace x with 88

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3 years ago

Convert the equation 3x+2y=14 to slope intercept form.<br><br> pleaseee help mee

MArishka [77]

Answer:

y= - 3/2x + 7 hope this helps you out :)

8 0

2 years ago