3 years ago

You are dealt one card from a standard 52 card deck find the probability of being dealt a king and a jack

Mathematics

1 answer:

OLga [1]3 years ago

7 0

Answer:

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Step-by-step explanation:

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PLEASE HELP!!! URGENT

Anon25 [30]

Answer:

B or E this one is alittle tricky.

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3 years ago

A square had a perimeter of 28 ft. What is its area?

Usimov [2.4K]

You will find the side by 28 ÷ 4 = 7 ft because a square has 4 equal sides.
Then we will do side × side to find the area of a square, so 7 × 7 = 49 ft²
So the answer is 49ft²

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3 years ago

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A parabola can be represented by the equation y2 = –x. What are the coordinates of the focus and the equation of the directrix?

shutvik [7]

ANSWER

Focus:

$(- \frac{1}{4} ,0)$

Directrix:

$x=\frac{1}{4}$

EXPLANATION

The given parabola has equation:

${y}^{2} = - x$

We compare this to the general equation,

${y}^{2} = - 4px$

Comparing the coefficient of x, we have:

-4p=-1

$p = \frac{1}{4}$

The focus is (-p,0)

$(- \frac{1}{4} ,0)$

The equation of the directrix is

x=p

$x = \frac{1}{4}$

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3 years ago

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Given the definitions of f(x) and g(x) below, find the value of f(g(0)).

spayn [35]

Answer:

f(g(0)) = 45

Step-by-step explanation:

to evaluate f(g(0)) , evaluate g(0) then substitute the value obtained into f(x)

g(0) = - 3(0) - 3 = 0 - 3 = - 3 , then

f(- 3) = 2(- 3)² - 5(- 3) + 12

= 2(9) + 15 + 12

= 18 + 27

= 45

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1 year ago

√x + x+13 =?<br> domain

hram777 [196]

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3 years ago