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docker41 [41]
3 years ago
15

What is 40% of 85? (with an explanation)

Mathematics
2 answers:
SVEN [57.7K]3 years ago
4 0

Answer:

34 is 40% of 85

Step-by-step explanation:

we just need to muliply

so we move the decimal 2x over to the left and we are left with 0.4

so we must multiply 85 * 0.4 = which is 34

larisa [96]3 years ago
3 0

Answer:

34 (explanation below)

Step-by-step explanation:

Convert percent to decimal by moving the decimal in the number 40 over 2 places to the left and drop the sign.

.40

Now multiply 85 by .40 = 34

You can ALSO do in your head by thinking 10 percent (8.50) and adding it 4 times to find 40 percent. It's a lot faster!

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Given F(x) = 3x 2 - 4, find F(-√3). <br><br> a)-13<br> b)5<br> c)23
svet-max [94.6K]

I want to say 5 but I'm not sure

8 0
3 years ago
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Which one is greater 3/10 or 2/5
Andreyy89

Answer:

2/5

Step-by-step explanation:

2/5=4/10

4 0
2 years ago
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Let's play a game of Russian roulette. You are tied to your chair. Here's a gun, a revolver. Here's the barrel of the gun, six c
4vir4ik [10]

Answer:

Don't spin the barrel.

Step-by-step explanation:

Each time you spin the barrel, the probability A of finding a bullet, having two bullets in six chambers is:

P(A)=\frac{2}{6}=\frac{1}{3}=0.33

For you to get shot in the second try but not the first, the barrel spin would have to stop precisely at one specific chamber: the one right before the bullets, so that probability would be:

P(B)=\frac{1}{6}=0.17

which means that this event is half as likely as finding a bullet every time the barrel is spun. Your chances are better if you pull the trigger for the second time without spinning the barrel.

4 0
3 years ago
Is 37/100 a irrational number
Musya8 [376]

No.  It's the ratio of  37  to  100 .

Also, it can be written as a fraction with whole numbers
on top and bottom.  Like this:  37/100 .

So it's a rational number.

In fact ... ANY number that you can write completely on paper
using digits is a rational number.

5 0
3 years ago
Write a system of linear inequalities so the points (1, 2) and (4, -3) are solutions of the system, but the point (-2, 8) is not
Verizon [17]

Answer: \left \{ {{y\leq -\frac{5}{3}x + \frac{11}{3}} \atop {y < 8}} \right

<u>Step-by-step explanation:</u>

(1, 2) and (4, -3)

First, find the slope (m): \frac{y_{2}-y_{1}}{x_{2}-x_{1}}

m = \frac{-3-2}{4-1}

   = -\frac{5}{3}

Next, choose ONE of the points and input the point and slope into the Point-Slope formula: y - y₁ = m(x - x₁)

y - 2 = -\frac{5}{3}(x - 1)

y - 2 = -\frac{5}{3}x + \frac{5}{3}

y      = -\frac{5}{3}x + \frac{11}{3}

Then, determine which inequality symbol will result in (-2, 8) being False (since it is not a solution):

y ___ -\frac{5}{3}x + \frac{11}{3}

8 ___ -\frac{5}{3}(-2) + \frac{11}{3}

8 ___ \frac{1}{3}

8 > \frac{1}{3}

so ≤ makes the statement False

⇒ y ≤ -\frac{5}{3}x + \frac{11}{3}

****************************************************************

If you need a "system" of inequalities, then you need another equation.

There are infinite possibilities. Graph the points to see what works.  

y < 8   or  x > -2 are two examples.


---> I just realized that the system can be simpler than what I did above:

\left \{ {{x>-2} \atop {y < 8}} \right



4 0
3 years ago
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