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2 years ago

Can someone go over my work please?

Mathematics

2 answers:

Setler79 [48]2 years ago

7 0

make 2,3,6,7 open circle if you can then they will all be right

kogti [31]2 years ago

5 0

Answer:

well I don't know how you learn this, but if the sign doesn't have a line underneath then its an open circle other than that great job!

Step-by-step explanation:

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Evaluate the following expression for x=-2 -4x+8+2x+3

sergiy2304 [10]

Answer:

Step-by-step explanation:

x = 2

-4x+8+2x+3 = ?

-4 (-2) + 8 + 2 (-2) + 3 =

= 8 + 8 - 4 + 3

= 16 - 4 + 3

= 12 + 3

= 15

hopefully this helped you :)

8 0

3 years ago

Number 3 . Help please

Alexxx [7]

Answer:

Step-by-step explanation:

Im not 100% sure though... i havent taken this class in 3 yrs... xD

5 0

3 years ago

4(x+2)=30 <br> I need help

mars1129 [50]

Answer:

x = 11/2

Step-by-step explanation:

8 0

3 years ago

The mean and standard deviation of a normal distribution are 150 and 12 respectively. What percentage of values lie between:

Semenov [28]

Answer:

Step-by-step explanation:

Use a calculator with built-in statistical functions. The function applying here is normcdf(, the "cumulative density function."

(a) The percentage of values lying between 138 and 162 is

norm(138,162, 150, 12), which comes out to 0.683, or 68.3%.

(b) Find norm(126, 174, 150,12): 0.945, or 94.5%

(d) Find norm(162, 174,150,12): 0.136, or 13.6%

8 0

3 years ago

Read 2 more answers

(x-3) (x-4) polynomial

Debora [2.8K]

Answer:

$x^{2} -7x +12$

Step-by-step explanation:

Using the Foil method

you multiply x times x and get $x^{2}$

Then you multiply -4 times X and get -4x

Then you multiply -3 times X and get -3x

then you add -4 and -3 together and get -7x

Lastly you multiply -4 and -3 and get 12

And there you have it

$x^{2} -7x +12$

8 0

3 years ago

Can someone go over my work please?​

Can someone go over my work please?