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3 years ago

What is equivalent to this formula: y=3(x+5)(x-2)

Mathematics

1 answer:

nadezda [96]3 years ago

5 0

Answer:

y = 3*(x^2) + 9x -30

Step-by-step explanation:

y=3(x+5)(x-2)

y = (3*x + 3*5) * (x - 2)

y = (3*x + 15) * (x - 2)

y = 3*x*x + 3*x*(-2) + 15*x + 15*(-2)

y = 3*(x^2) - 6x + 15x - 30

y = 3*(x^2) + 9x -30

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The value of a rare baseball card A appreciated by 20 percent over a five year period; over the next five years, the value plumm

lbvjy [14]

<h2>Answer:</h2>

<em><u>Percent value of A with respect to Percent value of B is,</u></em>

$30\%$

<h2>Step-by-step explanation:</h2>

In the question,

Let us say the value of the Baseball card A and B initially is = 100x

So, for Baseball card A in first 5 years percent increase = 20%

So,

Value after 5 years = 100x + 20% of 100x = 120x

<u>After 5 more years,</u>

Percent decrease = 50%

So,

<u>Value at the end of 10 years = 120x - 50% of 120x = 60x</u>

Now,

For Baseball card B, Percent increase in 10 years = 100%

So,

<u>Value of card B = 100x + 100% of 100x = 200x</u>

So,

<em><u>Percent value of A with respect to Percent value of B is,</u></em>

$\frac{60x}{200x}\times 100=30\%$

7 0

3 years ago

9 x 10 to the power of 2 how many times as much as 3 x 10 to the -2 power

hjlf

Answer:

3×10^4

Step-by-step explanation:

The desired factor is found by calculating the ratio of the two numbers:

k = (9×10^2)/(3×10^-2) = (9/3)×10^(2 -(-2)) = 3×10^4

The first number is 3×10^4 = 30,000 times as much as the second number.

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2 years ago

Can someone please help me with my math problem?

elena-s [515]

The answer to Part A is 2 15/32

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3 years ago

A recipe calls for 1/2 cup of milk for every 3/4 cup of flour. If Kenny wants to double the recipe, how many cups of flour will

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Answer:

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3 years ago

Question in the picture!

Sunny_sXe [5.5K]

Answer:

x = 12

Step-by-step explanation:

Vertical angles are congruent, so ...

4x = 48°

x = 12° . . . . . . divide by 4

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3 years ago