2 years ago

Needing help stuck on this.

Mathematics

1 answer:

Verdich [7]2 years ago

3 0

Answer:

Step-by-step explanat

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What is 3/4 of a number minus -16 equals 28. what is the number

dalvyx [7]

3/4x - 16 = 28
+16 +16
3/4x = 44
*3/4 *3/4
x = 176/3

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2 years ago

A learner finds a deck of 52 cards and then takes one card from the deck. What is the probability that the card is a king? Write

iVinArrow [24]

Answer:

The odds of choosing a club from a full deck is 13/52, or 1/4. Since there are now only 51 cards and 12 clubs, the odds are 12/51, or .2352

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1 year ago

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Leviafan [203]

Hopefully this helps :D

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2 years ago

The roots of a quadratic equation ax2+bx+c=0 are 3+sqrt2 and 3−sqrt2. Find the values of b and c assuming that a=1.

slamgirl [31]

Answer:

$b=-6\\c=7$

Step-by-step explanation:

we know that

The general equation of a quadratic function in factored form is equal to

$y=a(x-x_1)(x-x_2)$

where

a is a coefficient of the leading term

x_1 and x_2 are the roots

we have

$a=1\\x_1=3+\sqrt{2}\\x_2=3-\sqrt{2}$

substitute

$y=(1)(x-(3+\sqrt{2}))(x-(3-\sqrt{2}))$

Applying the distributive property convert to expanded form

$y=x^2-x(3-\sqrt{2})-x(3+\sqrt{2})+(3+\sqrt{2})(3-\sqrt{2})$

$y=x^2-(3x-x\sqrt{2})-(3x+x\sqrt{2})+(9-2)$

$y=x^2-3x+x\sqrt{2}-3x-x\sqrt{2}+7$

$y=x^2-6x+7$

therefore

$b=-6\\c=7$

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2 years ago

66 dollars is fifteen % of what amount

inn [45]

66 is 15% of what amount....
66 = 0.15x
66/0.15 = x
440 = x......so $ 66 is 15% of $ 440

8 0

2 years ago