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2 years ago

5

Kona’s mother realized that her age is the difference of Kona’s age squared and four. If k represents Kona’s age, which expressi

on represents Kona’s mother’s age?
k squared minus 4
k cubed minus 4
k squared + 4
k cubed + 4

2 answers:

zalisa [80]2 years ago

8 0

Answer:

A

Step-by-step explanation:

solmaris [256]2 years ago

4 0

Answer:

k squared minus 4/ A

Step-by-step explanation:

took the test

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Find the values of x when y=1

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Answer:

$x=1+\sqrt{5}, 1-\sqrt{5}$

Step-by-step explanation:

$x^{2} -2x-4=0$
$(x-1)^{2} -1-4=0$
$(x-1)^{2} -5=0$
$(x-1)^{2} =5$
$x-1=\sqrt{5} ,-\sqrt{5}$
$x=1+\sqrt{5} , 1-\sqrt{5}$

<u>FINAL ANSWER</u>

$x=1+\sqrt{5} , 1-\sqrt{5}$

<u><em>In Decimal Form (Rounded to 3 significant figures)</em></u>

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the average mark of three pupils are 68. what is the ratio of 5:4:3. how many marks did the best student get? HELP ME!

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Answer:

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Step-by-step explanation:

Average: The sum of all the numbers divided by the number of numbers

If the ratio of the scores is 5 : 4 : 3, let's just set it as 5x : 4x : 3x

Then using the definition of an average, we can write this equation.

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5x + 4x + 3x = 68 * 3

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Just in case, let's check this answer. Find the average of the 3 test scores.

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