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3 years ago

11

Ten beans are lying on a table. Each bean has one different number, 1-10. If you choose a bean with your eyes closed, what is th

e chance of choosing a prime number ?

1 answer:

Lorico [155]3 years ago

6 0

Prime numbers: 2, 3, 5, 7.
There are 4 prime numbers and 10 possibilities, so the probability is 4/10 = 2/5 or 40%

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A monitor that regularly costs $100 is on sale for 15% off. The salesperson offers you 20% off the sale price. What percent of t

nata0808 [166]

100*.85 (15% off) is $85.
$85 * .80 (20% off) is $68.
$100 - $68 is 32. So it would be 32% off of the original price.

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2 years ago

In the diagram below eg=100, ef=4x-20, and fg=2x+30

alisha [4.7K]

4x + 20 + 2x + 30 = 100
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6x = 90
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2 years ago

Find the distance between the points (7, -2) and (2, -10).

katrin2010 [14]

Answer:

$\sqrt{89}$

Step-by-step explanation:

d = $\sqrt{(x_{1}-x_{2} )^{2} +(y_{1} -y_{2} )^{2} }$

d = $\sqrt{(7-2)^{2} +(-2+10)^{2} }$

d = $\sqrt{5^{2} +(-8)^{2} }$

d = $\sqrt{25+64}$

d = $\sqrt{89}$

3 0

1 year ago

X to 2nd power equals 9/256

Flauer [41]

<span>There are two solutions.. x=16</span><span> or </span><span>x=−<span>16.</span></span>

5 0

3 years ago

If my weekly pocket money goes up by 50% each year . How much will I be getting a week after 3 years if I start on £1 a week ?

Vladimir [108]

Answer: £3.38

Step-by-step explanation:

In the first year, the pocket money goes up by:

= 1 + (1 * 50%)

= £1.50

In the second year:

= 1.50 + (1.50 * 50%)

= £2.25

In the third year:

= 2.25 * ( 2.25 * 50%)

= £3.38

4 0

2 years ago