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3 years ago

You randomly select a marble from a bag.

Mathematics

1 answer:

AysviL [449]3 years ago

3 0

Answer:

b is the answer

Step-by-step explanation:

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How many hours and minutes are there between 2:45 and 3:50?

Jlenok [28]

1 hour and 5 min. from 2:45 until 3:00 is 15 min. then from 3:00 until 3:50 is an additional 50 min. ad 15 and 50, and you get 65. every 60 min makes one hour, so that leaves you with one hour and five min.

3 0

3 years ago

Simplify.

Ket [755]

First off, nicely done on the exponents. You'd be surprised on how bad some look ,:D

a)
$(3xy^{3})(2x^{2}y)\\ (3*2)(x*x^{2})(y^{3}*y)\\\\ 6x^{3}y^{4}$

b)
$2y(2y+3y^{2})-y^{2}(3-y)\\ (4y^{2}+6y^{3}) + (-3y^{2}+y^{3})\\ (6y^{3}+y^{3})+(4y^{2}-3y^{2})\\ 7y^{3}+y^{2}\\\\ y^{2}(7y+1)$

8 0

3 years ago

The number of visitors to a certain Web site triples every month. The number of visitors is modeled by the expression 900 * 3^m

kipiarov [429]

Answer:

$900\times 3^m$ = 100

Step-by-step explanation:

The number of visitors is modeled by the expression $900\times 3^m$

Where m is the number of months after the number of visitors was measured.

We need to evaluate the above expression for m = -2.

So,

$900\times 3^m=900\times 3^{-2}\\\\=900\times \dfrac{1}{3^2}\\\\=900\times \dfrac{1}{9}\\\\=100$

At m = -2, the value of the above expression is equal to 100.

5 0

3 years ago

Simplify the expression<br> 4t + 10t

puteri [66]

Answer:

Add 4t and 10t

14t

Step-by-step explanation:

When you have the same variable you simply can add them together.

Hope this helps :)

5 0

3 years ago

What addition sentence helps you find 5 – 4?

sineoko [7]

Answer:

4 + x =5

Step-by-step explanation:

By adding a variable you can set up an addition sentence

6 0

3 years ago