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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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Evaluate Combination (6,6)

andrew11 [14]

Answer:

$nCx = \frac{n!}{x! (n-x)!}$

On this case n =6 and x =6 we got:

$6C6 = \frac{6!}{6! (6-6)!} = \frac{6!}{6! 0!}= \frac{6!}{6!}=1$

Step-by-step explanation:

The utility for the combination formula is in order to find the number of ways to order a set of elements

For this case we want to find the following expression:

$6C6$

And the general formula for combination is given by:

$nCx = \frac{n!}{x! (n-x)!}$

On this case n =6 and x =6 we got:

$6C6 = \frac{6!}{6! (6-6)!} = \frac{6!}{6! 0!}= \frac{6!}{6!}=1$

8 0

2 years ago

State the domain of the following : a. y = √ x + 1 /√ 25 − x^2 <br>b. f(x) = (√ 1 − x ) ln x

almond37 [142]

Answer:

a.) -1 < x < 5

b.) x <= 1

Step-by-step explanation: Domain is the independent variable (x).

For both question a and b, make sure that the number under the square root does not end up being negative. And the denominator of the fractional number is not equal to zero when variable x is being substituted for any value.

a.) y = √ x + 1 /√ 25 − x^2

Domain : -1 < x < 5

That is the minimum value for x is 0 and the maximum value is 4

b. f(x) = (√ 1 − x ) ln x

Domain : x <= 1

That is, x is less than or equal to 1

The maximum value for x is 1. x can be

1, 0, -1, -2, -3, ..........

8 0

3 years ago

2. You have 15 nickels and dimes. The coins are worth $1.20. How many of each coin do you have?

tankabanditka [31]

Answer:

9 dimes and 6 nickles

Step-by-step explanation:

6 0

2 years ago

Find m < BCS if m< BCD = 174 and m< SCD = 150

Kitty [74]

∠SCD =150 and ∠BCD=174 (Given)

∠BCS + ∠SCD = ∠BCD (Segment Addition Postulate)

∠BCS + 150 = 174 (Substitution)

∠BCS = 24 (Subtraction Property of Equality)

Answer: 24

3 0

3 years ago

How can you relate the mathematical way of solving problem to your daily problem solving?

RUDIKE [14]

Answer:

Mathematical problems can help you in life because it teaches you to go step by step and to think things through.

Step-by-step explanation:

6 0

3 years ago