Which expression is equivalent to 4” x 4-5? A 412 B) 42 C 4-2 D 4-35

I need all three answer for an assignment

AfilCa [17]

This is false... you can get an easy example: (-2) + (10) = 10 - 2 = 8

7 0

3 years ago

Read 2 more answers

Find the value of 'x. (2x - 3) (3x - 2)° 17 O 19 0 90 0 21

Korolek [52]

Answer:

Step-by-step explanation:

3x - 2 + 2x - 3= 90

5x - 5 = 90

5x = 95

x = 19

answer is b

6 0

3 years ago

Help me please I'm on a time limit

olga_2 [115]

The original price times the off price to get how much is the discount 3.25*0.25=0.8125 Subtract the discount from the original price 3.25-0.8125=2.4375=2.44 Or 3.25*0.75=2.4375=2.44

7 0

4 years ago

24 , Factor: x²-9 A (x + 3XX-3) B (x+3)2 с (x-3) (x+3)(x+3)

Katarina [22]

Answer:

(x-3)(x+3)

Step-by-step explanation:

We are given the expression $\displaystyle \large{x^2-9}$ :—

To factor this expression, we have a formula for it which is difference of two squares:—

$\displaystyle \large{a^2-b^2=(a+b)(a-b)}$

You can also swap from $\displaystyle \large{(a+b)(a-b)}$ to $\displaystyle \large{(a-b)(a+b)}$ via multiplication property.

From the expression, factor using the formula above:—

$\displaystyle \large{x^2-9=(x^2)-(3)^2}\\\displaystyle \large{x^2-9=(x-3)(x+3)}$

Therefore, the factored expression is:—

$\displaystyle \large{\boxed{(x-3)(x+3)}}$

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If you have any questions regarding the problem or need clarification of my answer/explanation, do not hesitate to ask in comment!

5 0

2 years ago

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