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2 years ago

(c2−4c+7) -(7c2−5c+3).

Mathematics

1 answer:

Nutka1998 [239]2 years ago

3 0

Answer:

USE CALCUKATOR LAAAAHHH!!!

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Amelia randomly selects two cards, with replacement, from a normal deck of cards. Calculate the probability that: the first card

Lena [83]

Answer:

1 / 2704

Step-by-step explanation:

Number of cards in a deck = 52

9 of clubs in a deck = 1

10 of clubs in a deck = 1

Probability = required outcome / Total possible outcomes

P(9 of club) = 1 / 52

With replacement ;

Then ;

P(10 of club) = 1 / 52

Hence,

P(9 of club, then 10 of club) = 1/52 * 1/52 = 1 / 2704

3 0

2 years ago

What is the solution to this system of equations

zhannawk [14.2K]

The correct answer for this problem is it has infinity solutions. Both equations equal up to t=5 -1/2

8 0

2 years ago

Read 2 more answers

How do I expand the following equation with the binomial theorem?

Vsevolod [243]

Answer:

16x^4+32x^3+24x^2+8x+1

Step-by-step explanation:

(2x+1)^4

(2x+1)*(2x+1)*(2x+1)*(2x+1)

4 0

1 year ago

Suppose Department X is 8,000 square feet, Department Y is 5,000 square feet, and Department Z is 6,000 square feet. What's the

den301095 [7]

Answer:

31.6%

Step-by-step explanation:

it is given that

Area of Department X = 8,000 square feet

Area of Department Y = 5,000 square feet

Area of Department Z = 6,000 square feet

now the total area = $8000+5000+6000$

= $19,000$ square feet

Percentage of area covered by Department Z = $\frac{area of Department Z}{total area }100$ %

= $\frac{6000}{19000} 100$ %

= $31.6$ %

percentage of overhead expenses applied to Department Z = percentage of area covered by Department Z

hence we have,

percentage of overhead expenses applied to Department Z = 31.6%

4 0

2 years ago

How would you do number 12 and 15?

Gnesinka [82]

Answer:

$x_1=x_2=-\dfrac{2}{3}$

Step-by-step explanation:

For the quadratic equation $ax^2+bx+c=0$ the discriminant is defined as

$D=b^2-4ac$

and the quadratic formula for the roots gives us two roots:

$x_1=\dfrac{-b-\sqrt{D}}{2a}$

and

$x_2=\dfrac{-b+\sqrt{D}}{2a}$

For the equation $9x^2 +12x+4=0$ use quadratic formula to find roots:

$D=12^2-4\cdot 9\cdot 4=144-144=0$

So,

$x_1=x_2=\dfrac{-12\pm \sqrt{0}}{2\cdot 9}=-\dfrac{12}{18}=-\dfrac{2}{3}$

7 0

3 years ago