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3 years ago

Simplify the expression 3(x + 3) - 2x

Mathematics

1 answer:

den301095 [7]3 years ago

3 0

Answer:

the answer is x + 9

Step-by-step explanation:

3 times x equals 3x and 3 times 3 equals 9 -2X

you need to add like terms together

3x+2x=5x

and then 9 is by itself

so x+ 9 is the answer

hope this helps :-)

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Simplify -24/(-3)X(-4)

beks73 [17]

Answer:

- 2

Step-by-step explanation:

$\frac{-24}{(-3)(-4)}$ = $\frac{-24}{12}$ = - 2

5 0

3 years ago

Find each missing length to the nearest tenth.

Llana [10]

Answer:

8.944

Step-by-step explanation:

To find the missing Length, Use Pythagorean Theorem!

$a^2+b^2=c^2$

$4^2+8^2=c^2$

$16+64=c^2$

$80=c^2$

$\sqrt{80} =8.944$

so it is approximately 10 but not quiet

hope this helps

6 0

3 years ago

Describe what the notation Upper P (Upper B vertical line Upper A )represents.

sergey [27]

Answer: Option 'D' is correct.

Step-by-step explanation:

Since we have given that

Upper P (Upper B vertical line Upper A)

means

$P(B|A)$

It means that probability of getting event B given that Event A is occurred.

D. The probability of event B occurring, given that event A has already occurred. is also expressed as $P(B|A)$

Hence, Option 'D' is correct.

4 0

3 years ago

Which of the following options best describes the function graphed below? A graph shows a curve that starts at the origin and go

Tamiku [17]

It's an increasing nonlinear. Exponential functions are graphed in basically any shape besides a line. This is an exponential function, therefore it is classified as nonlinear. By looking at the slope, from left to right, we can see that it is increasing, thus providing an answer that this is an increasing nonlinear function.

3 0

3 years ago

Read 2 more answers

an instructor grades on a curve by assuming that grades on a test are normally distributed. If the average grade is 80 and the s

sweet [91]

Step-by-step explanation:

According to normal distribution curves following a bell curve formula, it is followed that

34% of people will lie between Mean point and one positive standard deviation

34% of people will lie between Mean point and one negative standard deviation

14% of people will lie between Mean point and two positive standard deviation

14% of people will lie between Mean point and two negative standard deviation

2% of people will lie between Mean point and three positive standard deviation

2% of people will lie between Mean point and three negative standard deviation

Now following this principle, we are given that mean score is 80 and standard deviation is 8, hence the interval for grades would be;

Grade A ; Score greater than 96

Grade B : Score greater than 88 and less than or equal to 96

Grade C : Score greater than 80 and less than or equal to 88

Grade D : Score greater than 72 and less than or equal to 80

Grade E : Score greater than 64 and less than or equal to 72

Grade F : Score less than 64

3 0

3 years ago