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MatroZZZ [7]
3 years ago
8

Is 3cm, 4cm, 5cm a right triangle?

Mathematics
1 answer:
guajiro [1.7K]3 years ago
8 0

Answer:

Yes

Step-by-step explanation:Given sides measurement satisfy Pythagoras theorem.

(5)^2=25

(3)^2+(4)^2=25

Thus it is a right angled ∆

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Step-by-step explanation:

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Which expressions are polynomials? Select each correct answer. x2−x√+2 2 + s 4x³ + y​
katen-ka-za [31]

Answer:

Answers are

Y

2+s

4x^3+y

Step-by-step explanation:

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3 years ago
Ques<br><br> The set of values (63, 64, 65, 66} represents solutions of which inequality?
Ostrovityanka [42]

Answer: 63 < N ≤ 66

Step-by-step explanation:

We have the set:

(66, 64, 65, 66]

First.

When we have an end with the signs "(" or ")" means that the element near the sign does not belong to the set, this would be an "open" end. Usually used for the symbols > and <

While the sign "[" or "]" (in some cases the symbols { and } are used instead)

means that the value next to it are included in the set. Usually used for the symbols ≤ and ≥.

Then in the set: (63, 64, 65, 66} the value 63 does not actually belong, and value 66 does belong.

Then this set is written as:

63 < N ≤ 66

Such that N is an integer number.

7 0
3 years ago
Barbara signed up for dance lessons at Dance Unlimited. She was charged $55 per month for lessons and a one-time recital fee of
Lubov Fominskaja [6]

Answer:

G. 6 months

Step-by-step explanation:

1. 495-165 to remove the one-time payment = 330

2. 330/55 to find the number of months = 6

4 0
4 years ago
A random variable X follows the uniform distribution with a lower limit of 670 and an upper limit of 750. a. Calculate the mean
weqwewe [10]

Answer:

a) E(X) = \frac{a+b}{2}=\frac{670+750}{2}= 710

The variance is given by:

Var(X) =\frac{(b-a)^2}{12}= \frac{(750-670)^2}{12}= 5333.3333

And the deviation is just the square root of the variance and we got:

Sd(X) = \sqrt{5333.333}= 23.09

b) P(X

And for this case we can use the cumulative distribution given by:

F(X) = \frac{x-a}{b-a} , a \leq x \leq b

And replacing we got:

P(X

Step-by-step explanation:

For this case we assume that X is our random variable and we know that the distribution for X is given by:

X \sim Unif(a=670, b = 750)

Part a

For this case the expected value is given by:

E(X) = \frac{a+b}{2}=\frac{670+750}{2}= 710

The variance is given by:

Var(X) =\frac{(b-a)^2}{12}= \frac{(750-670)^2}{12}= 5333.3333

And the deviation is just the square root of the variance and we got:

Sd(X) = \sqrt{5333.333}= 23.09

Part b

For this case we want to find this probability:

P(X

And for this case we can use the cumulative distribution given by:

F(X) = \frac{x-a}{b-a} , a \leq x \leq b

And replacing we got:

P(X

5 0
3 years ago
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