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3 years ago

How do you work out coefficient of x

Mathematics

1 answer:

SOVA2 [1]3 years ago

3 0

its easy

Step-by-step explanation:

coefficient-the final answer

x-unknow number

lets say you have

x by 20 =y

y=5

and you type

x.20=5

x=20:5

x=4

the coeficient is 4

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Brian usually brushes his teeth in the morning, but 10% of the time he forgets. What is the probability that he will forget to b

Katena32 [7]

Using it's concept, it is found that there is a 0.001 = 0.1% probability that he will forget to brush his teeth three days in a row.

<h3>What is a probability?</h3>

A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.

In this problem, for each day, there is a 0.1 probability that he forgers to brush his teeth, and days are independent, hence for 3 consecutive days the probability is given by:

p = (0.1)³ = 0.001.

More can be learned about probabilities at brainly.com/question/14398287

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5 0

2 years ago

Write 83 as a sum of tens and ones

Travka [436]

8 tens and 3 ones.

hope that helped

6 0

2 years ago

Read 2 more answers

A green cross is formed by placing two rectangles of dimensions 8cm×4cm over

Goshia [24]

Answer:

<em>The perimeter of the green cross is 32 cm</em>

Step-by-step explanation:

<u>Perimeter</u>

It's the sum of all the external side lengths of a given shape.

The green cross formed by two rectangles is shown in the figure below.

We have outlined the dimensions of the external sides of the resulting cross.

Note there are four corners of 2 cm by 2 cm and four sides of 4 cm each.

The total perimeter is:

8 * 2 cm + 4 * 4 cm = 16 cm + 16 cm = 32 cm

The perimeter of the green cross is 32 cm

4 0

2 years ago

Brenda has $500 in her bank account every week she withdraws $40 for miscellaneous expenses how many weeks can she withdraw the

lisabon 2012 [21]

50 - 40x ≥ 200
-40x ≥ -300
x ≤ 7.5
40$ can be withdrawn from the account 7 weeks if she wants to maintain a balance at least 200<span />

6 0

3 years ago

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Calculate 6+9i/-1+4i

lisabon 2012 [21]

Multiply the numerator and denominator by the conjugate of the denominator:

$\dfrac{6+9i}{-1+4i} \times \dfrac{-1-4i}{-1-4i} = \dfrac{(6+9i)(-1-4i)}{(-1)^2-(4i)^2}$

Simplify:

$\dfrac{(6+9i)(-1-4i)}{(-1)^2-(4i)^2} = \dfrac{-6-9i-24i-36i^2}{1-16i^2} = \dfrac{-6-33i-36i^2}{1-16i^2} = \dfrac{-6-33i+36}{1+16} = \boxed{\dfrac{30-33i}{17}}$

8 0

2 years ago