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4 years ago

Which expression is equivalent to 9x – (x – 8)(x + 1) + 10x?

1 answer:

3 0

The answer to this question would be =−x^2+26x+8 I think. Sorry if it's wrong

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nikdorinn [45]

Answer:

Step-by-step explanation:

wassuh

4 0

4 years ago

Read 2 more answers

Find the value of each variable

4vir4ik [10]

Answer:

x = 10 $\sqrt{2}$ , y = 10 $\sqrt{6}$

Step-by-step explanation:

using the sine and cosine ratios in the right triangle and the exact values

cos60° = $\frac{1}{2}$ , sin60° = $\frac{\sqrt{3} }{2}$ , then

cos60° = $\frac{adjacent}{hypotenuse}$ = $\frac{x}{20\sqrt{2} }$ = $\frac{1}{2}$ ( cross- multiply )

2x = 20 $\sqrt{2}$ ( divide both sides by 2 )

x = 10 $\sqrt{2}$

and

sin60° = $\frac{opposite}{hypotenuse}$ = $\frac{y}{20\sqrt{2} }$ = $\frac{\sqrt{3} }{2}$ ( cross- multiply )

2y = 20 $\sqrt{2}$ × $\sqrt{3}$ = 20 $\sqrt{6}$ ( divide both sides by 2 )

y = 10 $\sqrt{6}$

5 0

3 years ago

Which linear inequality is represented by the graph

Zanzabum

It should be the second one but I can’t really see it

7 0

3 years ago

Which statement about the figure below is true?

ddd [48]

The answer to this question is C

6 0

4 years ago

The respiratory rate (in breaths per minute) in newborns varies according to a distribution that is approximately Normal, with a

maks197457 [2]

Answer:

$P(40$

And since we need to use excel the code in order to find the answer would be:

=NORM.DIST(55,50,5,TRUE)-NORM.DIST(40,50,5,TRUE)

And the answer would be:

$P(40$

Step-by-step explanation:

Let X the random variable that represent the respiratory rate of a population, and for this case we know the distribution for X is given by:

$X \sim N(50,5)$

Where $\mu=50$ and $\sigma=5$

We are interested on this probability

$P(40$

And since we need to use excel the code in order to find the answer would be:

=NORM.DIST(55,50,5,TRUE)-NORM.DIST(40,50,5,TRUE)

And the answer would be:

$P(40$

6 0

3 years ago