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3 years ago

Which of the following equations have no solution? Select all that apply.

Mathematics

2 answers:

lana [24]3 years ago

3 0

The answer should be B and A

Zolol [24]3 years ago

3 0

Answer:

Since Modulus of any real number is a positive Real number.

That is modulus is defined as

| x |= x, if x>0

and -x , if x<0.

=0 , if x=0.

|x|≠ -9,

and , |x|≠-7,

∵ modulus of real number is always Positive.

So, option A |x| = -9

and Option B,|x| = -7

are equation having no solution.

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The game of American roulette involves spinning a wheel with 38 slots: 18 red, 18 black, and 2 green. A ball is spun onto the wh

solong [7]

Answer:

a) $- \frac{1}{19}$

b) SD(x) = 0.9986

Step-by-step explanation:

Given data:

Number of slots 38

slots for red ball 18

slots for black = 18

slots for green 2

outcomes Red Black or Green

Profit 1 -1

P(X) 18/38 20/38

Expected value of wining,

$E(x) = 1. \frac{18}{38} + (-1) \frac{20}{38} = - \frac{2}{38} = - \frac{1}{19}$

B) Standard deviation of winning SD(x)

$SD(x) = \sqrt{(1- (-\frac{1}{19})^2 .\frac{18}{38} + (1- (-\frac{1}{19})^2 .\frac{20}{38}}$

$SD(x) = \sqrt{\frac{360}{361}$

SD(x) = 0.9986

3 0

3 years ago

Find the missing side<br> Please help thank you!!

Savatey [412]

Answer:

$c= \sqrt{41}$

Step-by-step explanation:

$a^{2} +b^{2} =c^{2} \\4^{2} + 5^{2} = 16 + 25 = \sqrt{41} = c$

8 0

3 years ago

Read 2 more answers

Please help me with this question I’m stuck!

Natasha_Volkova [10]

12 is the answer.

The sequence is 12, 6, 3, 3/2

8 0

3 years ago

How long should the wooden frame be (use 3.14 for pi)

scoundrel [369]

C=2πr
The C stands for circumference
the π is Pi (3.14)
and r is the radius (length of half a circle)

Since the sides are 10 ft you multiply that by 2 to get the length of both sides which gives you 20 feet.

Then to find the circle, since both are half circles. You can just do the normal circumference equation and you will end up with the same answer.

For example in this problem: this problem gives you the diameter but you need the radius of the circle. C=2(π)(1.5)

C=9.42 < this is the circumference of the circle.

Then you add the sides of the table which are 20 feet.

So the final answer is 29.42 feet.

6 0

3 years ago

Find f.<br> Write your answer as an integer or as a decimal rounded to the nearest tenth.

Natalka [10]

Answer:

Just wanted to say someone already gave you an answer of 62.7° in this question when you asked it before, they also gave a pretty good explanation!

3 0

3 years ago