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1 year ago

Which cards are equivalent to 2/3 - 1/4 choose all the correct answers

Mathematics

1 answer:

ohaa [14]1 year ago

6 0

2nd one
5th one
are both correct

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Suppose you pick and replace marbles from a bag, one after another. If the bag

Katyanochek1 [597]

Answer:

1/8

Step-by-step explanation:

There are 3 + 3 + 6 = 12 marbles in the bag and 12 * 12 = 144 ways to choose two marbles when replacing. There are 3 * 6 = 18 ways to choose a red marble and then a blue marble so the probability is 18 / 144 = 1 / 8.

5 0

3 years ago

Danielle earns a 7.5% commission on everything she sells at the electronics store where she works. How much commission did she e

andrew11 [14]

Answer:

$262.5

Step-by-step explanation:

Given data

Commission earned= 7.5%

Sales for last week= $3,500

Let us find the amount of the commission

=7.5/100* 3500

=0.075*3500

=$262.5

Hence the commission earned last week is

$262.5

7 0

3 years ago

How many pounds of coffee worth $9 a pound should be added to 10 pounds of coffee worth $3 a pound to get a mixture worth $7 a p

Dima020 [189]

Here is your answer......

6 0

3 years ago

Use the rules of exponents to evaluate or simplify. Write without negative exponents. 1/4^-1/2 = ___ a0

Nastasia [14]

For this case we have, by definition:

$a^{-b} =\frac{1}{a ^ b}$

So, we have:

$\frac{1}{4}^{-\frac{1}{2}}=\frac{1}{(\frac{1}{4})^{\frac{1}{2}}}$

On the other hand we have that by definition:

$a^{\frac{1}{2}}=\sqrt{a}$

Thus, the expression can be written as:

$\frac{1}{\sqrt {\frac{1}{4}}} =$

$\frac{1}{\frac{1}{\sqrt{4}}}$

$\frac{1}{\frac{1}{2}}$

$\frac{1*2}{1*1}=2$

So, we have:

$\frac{1}{4}^{-\frac{1}{2}}= 2$

Answer:

$\frac{1}{4}^{-\frac{1}{2}}= 2$

4 0

3 years ago

7 x what = 315?????????????

Allisa [31]

Answer:

7 × x = 315

x = 315 ÷ 7

x = 45

45 is the answer.

5 0

3 years ago

Read 2 more answers