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Sedaia [141]
3 years ago
11

A bag contains only red , blue , white and black counters. The number of white is the same as the number of black. The table sho

ws the probability of red or blue counter being chosen at random. The bag contains 240 counters work out how many white counters there are in a bag

Mathematics
1 answer:
satela [25.4K]3 years ago
6 0

A bag contains only red , blue , white and black counters. The number of white is the same as the number of black. The table shows the probability of red or blue counter being chosen at random. The bag contains 240 counters work out how many white counters there are in a bag

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Which shows the following expression after the negative exponents have been eliminated?
SVETLANKA909090 [29]

Answer:

\frac{a^3b^4}{ab^2} which is the last choice in the question

Step-by-step explanation:

Simplify

\frac{a^3b^{-2}}{ab^{-4}} = \frac{a^3}{a}\frac{b^{-2}}{b^{-4}}

Using the fact that \frac{x^m}{x^n}  =x^{m-n}

We get

\frac{a^3}{a} = a^{3-1} = a^2

\frac{b^{-2}}{b^{-4}} = b^{-2-(-4)} = b^2

So

\frac{a^3b^{-2}}{ab^{-4}} =a^2b^2

Multiplying numerator and denominator by ab^2 gives

a^2b^2 \frac{ab^2}{ab^2}

= \frac{a^3b^4}{ab^2} ANSWER

Hint:

We can eliminate first choice since negative exponents still remain

We can eliminate third choice because the expression has a minus sign which is not possible

That just leaves second and fourth choices to work with

7 0
2 years ago
If the divisor is a two digit number,can you write a rule for how many digits in the dividend you will need to look at ti comple
Rudik [331]

Mmh same for me! QwQ I see your a Gacha person too! Anyways, let's get on with the question. Well I'm not so sure about this! :< So The Divisor is a two-digit number (For example, 10 since it has 2 numbers/2 digits). Next we have to write a rule for how many digits in the dividend you will need to look at to complete the first step in dividing. Dividing two fractions is the same as multiplying the first fraction by the reciprocal of the second fraction. The first step to dividing fractions is to find the reciprocal (reverse the numerator and denominator) of the second fraction. Next, multiply the two numerators. Then, multiply the two denominators. This is a fraction way (Read this carefully) I PUT ThiS PART IN CAPS SO YOU CAN SEE THE WARNING XD. Alright so, the warning is this is for fractions.

We have to find it for a two-digit number So, Divide the first number of the dividend (or the two first numbers if the previous step took another digit) by the first digit of the divisor. Write the result of this division in the space of the quotient. Multiply the digit of the quotient by the divisor, write the result beneath the dividend and subtract it. There! I hope this helps you this took a long time.

~ Kana ~

| Have a wonderful day and hope I helped you! :3 |

5 0
3 years ago
How do you solve it​
eduard

Answer:

How do you solve what?

Step-by-step explanation:

6 0
3 years ago
18 Emily is planting a garden. She places fence posts at
otez555 [7]
69 or 420 feet is what i think it is
4 0
3 years ago
Please help me is for my homework​
oksian1 [2.3K]

I hope this help you

7 0
3 years ago
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