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3 years ago

Which equation has x = 4 as the solution?

Mathematics

2 answers:

Sindrei [870]3 years ago

5 0

16=4 because in order to get 4 you need have to divide 16 into 4

mel-nik [20]3 years ago

5 0

Answer:

log baseX 16=4

Step-by-step explanation:

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Draw 2 cards from a standard deck of 52 cards. What is the probability that the first card is a queen and the second card is a k

bixtya [17]

Answer:

4/663

Step-by-step explanation:

There are four queens. The probability that the first card is a queen is 4/52.

There are four kings. There are 51 cards left after the first card has been drawn, so the probability that the second card is a king is 4/51.

Therefore, the probability that the first card is a queen AND the second card is a king is:

P = 4/52 × 4/51

P = 4/663

3 0

3 years ago

Diego is solving the equation x^2-12x = 21

uysha [10]

Answer:

The solutions to the quadratic equations will be:

$x=\sqrt{57}+6,\:x=-\sqrt{57}+6$

Step-by-step explanation:

Given the expression

$x^2-12x\:=\:21$

Let us solve the equation by completing the square

$x^2-12x\:=\:21$

Add (-6)² to both sides

$x^2-12x+\left(-6\right)^2=21+\left(-6\right)^2$

simplify

$x^2-12x+\left(-6\right)^2=57$

Apply perfect square formula: (a-b)² = a²-2ab+b²

i.e.

$x^2-12x+\left(-6\right)^2=\left(x-6\right)^2$

so the expression becomes

$\left(x-6\right)^2=57$

$\mathrm{For\:}f^2\left(x\right)=a\mathrm{\:the\:solutions\:are\:}f\left(x\right)=\sqrt{a},\:-\sqrt{a}$

solve

$x-6=\sqrt{57}$

add 6 to both sides

$x-6+6=\sqrt{57}+6$

Simplify

$x=\sqrt{57}+6$

also solving

$x-6=-\sqrt{57}$

add 6 to both sides

$x-6+6=-\sqrt{57}+6$

Simplify

$x=-\sqrt{57}+6$

Therefore, the solutions to the quadratic equation will be:

$x=\sqrt{57}+6,\:x=-\sqrt{57}+6$

5 0

2 years ago

Segments 2) Use the following picture

alisha [4.7K]

The answer is AB= 52, because x=15

5 0

3 years ago

Marking brainliest 13 points

Goshia [24]

Answer:

3183.96 cm³

Step-by-step explanation:

The formula for volume of a cylinder is: V = pi times r² times h.

Hope it helps!

4 0

2 years ago

Read 2 more answers

GUY HELP DID CLICK OF THE RIGHT ONE ?

kakasveta [241]

Answer:

Step-by-step explanation:

it just is that's the right book

7 0

2 years ago