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3 years ago

10 times as many as tens is 30 tens or hundreds

Mathematics

1 answer:

postnew [5]3 years ago

3 0

Given statement: 10 times as many as tens is 30 tens or hundreds.

In the given statement tens and hunderds used there.

Tens represents ten times, that is 10 x

We are given 30 tens.

30 tens could be written as 10 times 30 = 300.

30 tens could be could also be written as 10 times 3 tens.

Also 300 could be written as 3 hundreds.

Therefore, we can write final statement as " 10 times as many 3 as tens is 30 tens or 3 hundreds".

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Seven more than the quotient of a number b and 25 is greater than 5

grin007 [14]

Answer:

you mulitply 25 then divide it by 5 and add in the variable

Step-by-step explanation:

hope it helps

7 0

3 years ago

Researchers recorded that a certain bacteria population declined from 200,000 to 900 in 18 hours. At this rate of decay,

salantis [7]

Answer:

9,942 bacteria were there at 10 hours.

Step-by-step explanation:

Equation for population decay:

The equation for population decay, after t hours, is given by:

$P(t) = P(0)(1-r)^t$

In which P(0) is the initial population and r is the decay rate, as a decimal.

Researchers recorded that a certain bacteria population declined from 200,000 to 900 in 18 hours.

This means that $P(0) = 200000$ and that when $t = 18, P(t) = 900$ . So we use this to find r.

$P(t) = P(0)(1-r)^t$

$900 = 200000(1-r)^{18}$

$(1-r)^{18} = \frac{900}{200000}$

$\sqrt[18]{(1-r)^{18}} = \sqrt[18]{\frac{900}{200000}}$

$1 - r = (\frac{900}{200000})^{\frac{1}{18}}$

$1 - r = 0.7407$

$P(t) = P(0)(1-r)^t$

$P(t) = 200000(0.7407)^t$

At this rate of decay, how many bacteria was there at 10 hours?

This is P(10). So

$P(10) = 200000(0.7407)^{10} = 9941.5$

Rounding to the nearest whole number:

9,942 bacteria were there at 10 hours.

5 0

3 years ago

Step 2 - Fill in the missing number: 2 1 -3 -10 24 a a =

Sunny_sXe [5.5K]

Answer:

Step-by-step explanation:

7 0

3 years ago

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If I have 12% what is the price of 32000 what will be the tax price

Stolb23 [73]

I assume you saying that there is 12% tax pay and what you are wanting to buy is 32,000 dollars. If this is the case, this is how you would do it:
32000*0.12=3840
32000+3840=35840
The total amount that you would be paying is 35,840 dollars

6 0

4 years ago

3 1/2 X 1 2/3 = what is it?????

puteri [66]

Answer:

$5 \frac{5}{6}$

Step-by-step explanation:

$3 \frac{1}{2} \times 1 \frac{2}{3} \\ = 5 \ \frac{5}{6}$

6 0

3 years ago

Read 2 more answers