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3 years ago

How do you simplify -50 1/2+ 12.3

Mathematics

1 answer:

marishachu [46]3 years ago

6 0

Answer:

-38.2

Step-by-step explanation:

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What is the slope of the line that passes through the points (-4, 6) and (2, 4)?

Tpy6a [65]

Your answer will be a

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3 years ago

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Now, you do the math: Tell us if you can afford the apartment using the details below.

Lilit [14]

Answer:

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3 years ago

Yuri thinks that 3/4 is a root of the following function.

sineoko [7]

Given:

The polynomial function is

$q(x)=6x^3+19x^2-15x-28$

Yuri thinks that $\dfrac{3}{4}$ is a root of the given function.

To find:

Why $\dfrac{3}{4}$ cannot be a root?

Solution:

We have,

$q(x)=6x^3+19x^2-15x-28$

If $\dfrac{3}{4}$ is a root, then the value of the function at $\dfrac{3}{4}$ is 0.

Putting $x=\dfrac{3}{4}$ in the given function, we get

$q(\dfrac{3}{4})=6(\dfrac{3}{4})^3+19(\dfrac{3}{4})^2-15(\dfrac{3}{4})-28$

$q(\dfrac{3}{4})=6(\dfrac{27}{64})+19(\dfrac{9}{16})-\dfrac{45}{4}-28$

$q(\dfrac{3}{4})=3(\dfrac{27}{32})+\dfrac{171}{16}-\dfrac{45}{4}-28$

$q(\dfrac{3}{4})=\dfrac{81}{32}+\dfrac{171}{16}-\dfrac{45}{4}-28$

Taking LCM, we get

$q(\dfrac{3}{4})=\dfrac{81+342-360-896}{32}$

$q(\dfrac{3}{4})=\dfrac{-833}{32}\neq 0$

Since the value of the function at $\dfrac{3}{4}$ is not equal to 0, therefore, $\dfrac{3}{4}$ is not a root of the given function.

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3 years ago

How do you turn 0.65 decimal into a fraction or mixed number into simplest form

Yakvenalex [24]

Put 65 over 100 so it's a fraction and simplify from there i think

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4 years ago

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N a certain store, there is a .03 probability that the scanned price in the bar code scanner will not match the advertised price

kenny6666 [7]

Answer:

Step-by-step explanation:

Given that in a certain store, there is a .03 probability that the scanned price in the bar code scanner will not match the advertised price.

Here X the number of items that will not match in the sample of 780 items is binomial because

i) there are two outcomes only

ii) Also each trial is independent of the other.

a) the expected number of mismatches

$=E(X) = 780(0.03)\\= 23.40\\=23$

b) Var(x) = $npq = 780(0.03)(0.97)\\= 22.698$

Std dev (X) = 4.7642

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3 years ago