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4 years ago

Does anyone know what this could be ??

Mathematics

1 answer:

Rzqust [24]4 years ago

3 0

Answer:

The answer is f(-3)= -2(-3)+4

Step-by-step explanation:

you just switch x with -3 because you know the unknown variable now.

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A shopper bought shoes marked $45. The sales tax is 6.5%. How much did the shopper pay in all

seraphim [82]

45 times 1.065=47.925 which would be $47.93... hope that helps

5 0

3 years ago

SEE QUESTION IN IMAGE

Pavel [41]

Answer:

5, 6, 7

(5 + 6 + 7)/3 = 6

<u>Standard deviation:</u>

σ = $\sqrt{((5 - 6)^2+(6-6)^2+(7-6)^2)/3} = \sqrt{2/3}$

Correct choice is d

-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5

(-5 -4 - 3 - 2 - 1 + 0 + 1 + 2 + 3 + 4 + 5)/11 = 0

<u>Standard deviation:</u>

σ = $\sqrt{((-5)^2+(-4)^2+(-3)^2+(-2)^2+(-1)^2+0^2+1^2+2^2+3^2+4^2+5^2)/11} = \sqrt{10}$

Correct choice is d

3, 4, 5, 6, 7

<u>Standard deviation:</u>

σ = $\sqrt{((3-5)^2+(4-5)^2+(5-5)^2+(6-5)^2+(7-5)^2)/5} = \sqrt{2}$ ≈ 1.4

Correct choice is d

5 0

3 years ago

Which term best describes two events in which knowledge of one event has no effect on the probability of the other event?

andriy [413]

The correct option is the first one. Independent events are exactly what you're asking for: the information you have on one event doesn't affect in any way the probability of the other.

A classic example is the roll of two dice: assume that you roll the first one and get a 4. Does this imply anything on the outcome of the second die? No, all events 1,2,3,4,5,6 are still equally distributed, no matter the result of the first die.

5 0

4 years ago

I need help with this plzzzz it's difficult?

belka [17]

Answer:

-2.5 (decimal) or -5/2 (fraction)

Step-by-step explanation:

5 0

3 years ago

Which of the following functions best describes this graph?

Nadusha1986 [10]

Answer:

(A). y = ( x - 3 ) ( x + 4 )

Step-by-step explanation:

5 0

3 years ago