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2 years ago

Please help me with this question

Mathematics

2 answers:

valkas [14]2 years ago

8 0

I believe the answer is b

ZanzabumX [31]2 years ago

5 0

Not sure at all but i think it could be B.

If you multiply (x^2 - 5) by (x^2 + 5) then you get (x^4 - 25)

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The height distribution of NBA players follows a normal distribution with a mean of 79 inches and standard deviation of 3.5 inch

Shtirlitz [24]

Answer:

The probability will be "0.0111".

Step-by-step explanation:

The given values are:

Mean,

$\mu$ = 79

Standard deviation,

$\sigma$ = 3.5

Now,

⇒ $\sigma\bar x = \frac{\sigma}{\sqrt n}$

$= \frac{3.5}{\sqrt 16}$

$=0.875$

⇒ $P(\bar x > 81) = 1 - P(\bar x < 81)$

So,

= $1 - P{\frac{(\bar x - \mu \bar x )}{ \sigma \bar x} < \frac{(81 - 79) }{0.875} ]$

= $1 - P(z < 2.2857)$

= $0.0111$

7 0

3 years ago

Mary bought a handbag for 15.00naira. if she sold it for 18.00,what was her percentage gain?

melomori [17]

Answer:

total profit gained = 20%

Step-by-step explanation:

profit = SP - CP = 18 - 15 = 3 naira

total profit percentage =

( profit / CP ) × 100
3 / 15 × 100
20%

hence her total percentage gain was 20%

8 0

3 years ago

Evaluate |a| - |b|, given a = 5, b = -3, and c = -2. 2 3 7 8

sertanlavr [38]

Step-by-step explanation:

|5| - |-3| is 2

4 0

3 years ago

In 3-10 use the distributive property to find each missing factor

Elanso [62]

The missing factor in the equation is -21

<h3>What is a distributive factor?</h3>

The Distributive Property introduces the multiplication operator an existing mathematical statement that involves the addition operator.

From the complete question, the equation is given as:

$6 \times x= (3 \times 7) + (x \times 7)$

Where x represents the missing factor.

So, we have:

$6x= (21) + (7x)$

Remove brackets

$6x= 21 + 7x$

Collect like terms

$6x-7x= 21$

Evaluate the like terms

$-x= 21$

Divide both sides by -1

$x= -21$

Hence, the missing factor in the equation is -21

Read more about the distributive property at:

brainly.com/question/2807928

6 0

2 years ago

Nidhi is allowed to watch 2.5 hours of TV on Saturday If her favorite Tv show lasts for 24 minutes each, how many full episodes

bekas [8.4K]

Answer:

6 full episodes

Step-by-step explanation:

You will need to convert 2.5 hours to minutes and divide by 24. Round to the nearest whole number.

4 0

2 years ago