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Naya [18.7K]
3 years ago
7

Obwód prostokąta jest równy 20cm a jeden z jego boków jest 4 razy dłuższy oddrugiego. Oblicz długości boków tego prostokąta. SZY

BKO
Mathematics
1 answer:
Kruka [31]3 years ago
6 0

Answer:

what is your language

can you explain in Hindi.

then i give your answer

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What is the simplest form of the expression 6x(x − 4) − 16x2 − (9x − 1)
Sedbober [7]
Use distributie property which is
a(b+c)=ab+ac
therefor
6x(x-4)=6x^2-24x

distribute the negative 1 infroont of the (9x-1)
-1(9x-1)=-9x+1
now we have

6x^2-24x-16x^2-9x+1
gropu like terms
6x^2-16x^2-24x-9x+1
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-10x^2-33x+1 is simplest form
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A contractor is required by a county planning department to submit one, two, three, four, five, or six forms (depending on the n
Ratling [72]

Answer:

a)

k = \dfrac{1}{21}

b) 0.476

c) 0.667    

Step-by-step explanation:

We are given the following in the question:

Y = the number of forms required of the next applicant.

Y: 1, 2, 3, 4, 5, 6

The probability is given by:

P(y) = ky

a) Property of discrete probability distribution:

\displaystyle\sum P(y_i) = 1\\\\\Rightarrow k(1+2+3+4+5+6) = 1\\\\\Rightarrow k(21) = 1\\\\\Rightarrow k = \dfrac{1}{21}

b) at most four forms are required

P(y \leq 4) = \displaystyle\sum^{y=4}_{y=1}P(y_i)\\\\P(y \leq 4) = \dfrac{1}{21}(1+2+3+4) = \dfrac{10}{21} = 0.476

c) probability that between two and five forms (inclusive) are required

P(2\leq y \leq 5) = \displaystyle\sum^{y=5}_{y=2}P(y_i)\\\\P(2\leq y \leq 5) = \dfrac{1}{21}(2+3+4+5) = \dfrac{14}{21} = 0.667

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3 years ago
50% of the 60 shoe options at Baby Steps, a shoe store, are sneakers. How many of the
mote1985 [20]

Answer:

30

Step-by-step explanation:

Formulate:

50%×60

0.5×60

= 30

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2 years ago
Simplify 4(12x−14y+3)
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Plz help me well mark brainliest if you are correct!
evablogger [386]
The answer is D. ..........
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