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3 years ago

Someone answer even if it’s easy pls

Mathematics

1 answer:

nordsb [41]3 years ago

4 0

Answer:

425

Step-by-step explanation:

Out of 429 matchbox cars, there's only 4 that are blue. Therefore, 429 - 4 = 425. :)

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Picking a blue marble from a bag of 4 red marbles, 6 blue marbles, and 1 white marble

salantis [7]

You have a 1:11 ratio of choosing a blue marble from a bag of 4 <span>red marbles, 6 blue marbles, and 1 white marble.</span>

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2 years ago

No bs and no links if you do it right I’ll give you 15 points

julia-pushkina [17]

Answer:

Collection of soil samples would be my guess

Step-by-step explanation:

Remote sensing means taking in info from far away and you cant really take soil samples from far away.

remote sensing

the scanning of the earth by satellite or high-flying aircraft in order to obtain information about it. not always in the sky and not always on earth

6 0

3 years ago

if your car can travel 10km on every litre of petrol.how much petrol you will need to drive 1000 km??

dimulka [17.4K]

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5 0

2 years ago

Use the "rule of 72" to estimate the doubling time (in years) for the interest rate, and then calculate it exactly. (Round your

bonufazy [111]

Answer:

Using the rule of 72, the doubling time is 9.35 years.

The exact answer is that the doubling time is 8.89 years.

Step-by-step explanation:

By the rule of 72, we have that the doubling time D is given by:

$D = \frac{72}{Interest Rate}$

The interest rate is in %.

In our exercise, the interest rate is 7.7%. So, by the rule of 72:

$D = \frac{72}{7.7} = 9.35$ .

Exact answer:

The exact answer is going to be found using the compound interest formula(since the rule of 72 is a simplification of this formula).

The compound interest formula is given by:

$A = P(1 + \frac{r}{n})^{nt}$

Where A is the amount of money, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per unit t and t is the time the money is invested or borrowed for.

So, for this exercise, we have:

We want to find the doubling time, that is, the time in which the amount is double the initial amount, double the principal.

$A = 2P$

$r = 0.077$

There are 52 weeks in a year, so $n = 52$

$A = P(1 + \frac{r}{n})^{nt}$

$2P = P(1 + \frac{0.077}{52})^{52t}$

$2 = (1.0015)^{52t}$

Now, we apply the following log propriety:

$\log_{a} a^{n} = n$

So:

$\log_{1.0015}(1.0015)^{52t} = \log_{1.0015} 2$

$52t = 462.44$

$t = \frac{462.44}{52}$

$t = 8.89$

The exact answer is that the doubling time is 8.89 years.

6 0

3 years ago

Could someone help me solve this?

Andrew [12]

G has 2 local minimums, you can tell because there are 2 dips in the line before it goes of to infinity.
Both questions have the same answer so the answer to both would be
Local Min: (-2,-3), (3,0)

5 0

2 years ago