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Nookie1986 [14]
3 years ago
15

Which expression is equivalent to .........? ...... ...... ..... .

Mathematics
2 answers:
Alchen [17]3 years ago
5 0

Answer:

first one

2m=1 == 2+m-1+m

Step-by-step explanation:

ExtremeBDS [4]3 years ago
4 0
I think it’s C. I’m not sure though :/
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How many triangles can be constructed with angles measuring 10º, 80º, and 90º?
mihalych1998 [28]
How many triangles can<span> you </span>construct<span> given three </span>angle<span> measures whose sum is 180°? The sum of the</span>angle<span> measures of any </span>triangle<span> is 180°. You </span>can<span> use a protractor to </span>construct<span> a </span>triangle<span> given three</span>angle<span> measures. </span>90 90<span>. </span>80<span> 100. 70 110. 60. 120. 50. 130. 40. 140. 30. 150. 20. 160. </span>10. 170. 0. 180. 100.80<span>. 110 70. 12.</span>
3 0
3 years ago
Read 2 more answers
Assume the random variable X is normally distributed with mean mu equals 50 and standard deviation sigma equals 7. Compute the p
drek231 [11]

Answer:

The probability that <em>X</em> is less than 42 is 0.1271.

Step-by-step explanation:

The random variable <em>X </em>follows a Normal distribution.

The mean and standard deviation are:

E (X) = <em>μ</em> = 50.

SD (X) = <em>σ</em> = 7.

A normal distribution is continuous probability distribution.

The Normal probability distribution with mean µ and standard deviation σ is given by,

f_{X}(\mu, \sigma)=\frac{1}{\sigma\sqrt{2\pi}}e^{-(x-\mu)^{2}/2\sigma^{2}};\ -\infty

To compute the probability of a Normal random variable we first standardize the raw score.

The raw scores are standardized using the formula:

z=\frac{x-\mu}{\sigma}

These standardized scores are known as <em>z</em>-scores and they follow normal distribution with mean 0 and standard deviation 1.

Compute the probability of (X < 42) as follows:

P(X

*Use a <em>z</em>-table for the probability.

Thus, the probability that <em>X</em> is less than 42 is 0.1271.

The normal curve is shown below.

6 0
3 years ago
Odysseus found that his troubles varied directly as his distance from his home island of Ithaca. If he had 20 troubles when he w
Vitek1552 [10]
Lol


trouble varies directly as distance
lets say t=trouble and d=distance
t=kd
k is constant

given
when t=20, and d=400
find k
20=400k
divide by 400 both sides
1/20=k



t=(1/20)d

given, d=60
find t

t=(1/20)60
t=60/20
t=3

3 troubles
5 0
3 years ago
Geometry question help
ololo11 [35]
The answer is b because
7 0
3 years ago
What is the answer 0,12km² a m² show work
seraphim [82]

Answer:

120 000 m^2

Step-by-step explanation:

I ASSUME you're being asked to convert from km^2 to m^2.

For this you need to identify the conversion rate, which is 1 000 000 m^2 / 1 km ^2. Multiply by the thing you're converting from and cancel the units.

(1 000 000 m^2 / 1 km ^2) x 0,12 km^2 = 120 000 m^2 (the km^2 cancels out, leaving you only with your target unit of m^2)

8 0
2 years ago
Read 2 more answers
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