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3 years ago

Help with geometry please. Is that answer right?

Mathematics

2 answers:

pshichka [43]3 years ago

6 0

your answer looks correct to me.

Anna71 [15]3 years ago

3 0

Answer:

I believe it is right, although i haven't really gone deep into that unit yet and I'm not sure if I am correct.

Step-by-step explanation:

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Expanded form of 5(2m)³

-BARSIC- [3]

Answer:

$40m^{3}$

Step-by-step explanation:

Because of order of operations, you do exponent first. $(2m)^{3} =8m^{3}$ . Lastly 8 multiplied by 5 is 40, so the answer is $40m^{3}$

6 0

2 years ago

WILL GIVE BRAINIEST <br> NEED HELP ASAP<br> DUE IN 10 MINS

tensa zangetsu [6.8K]

Answer:

Scientist B

Step-by-step explanation:

1 kg = 2.2 lbs

1L = 2.11 pints

So let's convert Scientist B's data.

3.0lbs salt = 3.0/2.2 = 1.36kg

6 pints water = 6/2.11 = 2.84L water

Scientist A

1kg salt

3.0L water

We now figure out the concentration of salt in water.

Scientist A Scientist B

1kg/3.0L = .33kg/L 1.36kg/2.84L = .48kg/L

So scientist B had a more concentrated solution.

5 0

2 years ago

Read 2 more answers

There are 10 pens in a box. There are x red pens in the box. All the other pens are blue. Jack takes at random two pens from the

expeople1 [14]

The probability that one of each color is selected is $\frac{10x - x^2}{45}$

<h3>Probabilities</h3>

The probability of an event is the chances of the said event

The given parameters are:

Total = 10
Red = x
Blue = 10 - x

<h3>Calculating the required probability</h3>

The probability that one of each color is selected is calculated as follows:

$P = P(Blue) \times P(Red) + P(Red) \times P(Blue)$

So, we have:

$P = \frac{10 - x}{10} \times \frac{x}{9} + \frac{x}{10} \times \frac{10 - x}{9}$

This gives

$P = \frac{x(10 - x)}{90} +\frac{x(10 - x)}{90}$

Take LCM

$P = \frac{2x(10 - x)}{90}$

Simplify the above expression

$P = \frac{x(10 - x)}{45}$

Expand

$P = \frac{10x - x^2}{45}$

Hence, the probability that one of each color is selected is $P = \frac{10x - x^2}{45}$