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Papessa [141]
3 years ago
5

Simplify: -2x+5y-6x-4y

Mathematics
1 answer:
Westkost [7]3 years ago
5 0
-2x+5y-6x-4y = -8x + y
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A sample of 100 is drawn from a population with a proportion equal to 0.50. Determine the probability of observing between 43 an
diamong [38]

Answer:

The probability of observing between 43 and 64 successes=0.93132

Step-by-step explanation:

We are given that

n=100

p=0.50

We have to find the probability of observing between 43 and 64 successes.

Let X be the random variable  which represent the success of population.

It follows binomial distribution .

Therefore,

Mean,\mu=np=100\times 0.50=50

Standard deviation , \sigma=\sqrt{np(1-p)}

\sigma=\sqrt{100\times 0.50(1-0.50)]

\sigma=5

Now,

P(43\leq x\leq 64)=P(42.5\leq x\leq 64.5)

P(42.5\leq x\leq 64.5)=P(\frac{42.5-50}{5}\leq Z\leq \frac{64.5-50}{5})

=P(-1.5\leq Z\leq 2.9)

P(42.5\leq x\leq 64.5)=P(Z\leq 2.9)-P(Z\leq- 1.5)

P(42.5\leq x\leq 64.5)=0.99813-0.06681

P(43\leq x\leq 64)=0.93132

Hence, the probability of observing between 43 and 64 successes=0.93132

4 0
2 years ago
What is the measure of angle 7?
Ratling [72]

m<1 = m<4 by vertical  angles theorem

3x + 10 = 4x - 15

-1x = -25

x = 25

m<1 + m<7 = 180 if parallel alternate interior angles supplementary

3x + 10 + m<7 = 180

3(25) + 10 + m<7 = 180

75 + m<7 = 180

m<7 = 105°

Hope this helps! ;)

8 0
2 years ago
A bottle contains 1.6 litres of water.
zlopas [31]

Answer:

<h2>850 millilitres or 0.85 litre</h2>

Step-by-step explanation:

<h3>1 litre = 1000 ml</h3><h3>1.6 litre = 1000 ×1.6</h3><h3>1.6 litre = 1600 ml</h3>

<h3>left water = 1600ml - 750ml</h3><h3> = 850ml</h3>

<h2>MARK ME BRAINLIST</h2>
4 0
3 years ago
What is a cube in math
DerKrebs [107]

Answer:

In arithmetic and algebra, the cube of a number n is its third power, that is, the result of multiplying three instances of n together. The cube is also the number multiplied by its square: n3 = n × n2 = n × n × n.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
[3.2×(6.1+6.3)]-2.8=
iris [78.8K]

Answer:

36.88

Step-by-step explanation:

6.1 + 6.3 = 12.4

3.2 x 12.4 = 39.68

39.68 - 2.8 = 36.88

4 0
2 years ago
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