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2 years ago

Please I need help PLEASE

Mathematics

1 answer:

frutty [35]2 years ago

5 0

Answer:

15/2.5 18/h

Step-by-step explanation:

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sveticcg [70]

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Step-by-step explanation:

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2 years ago

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Convert Y=0.4(X -3)squared +4 to standard form

kirza4 [7]

Answer:

$Y=0.4X^2-2.4X+7.6$

Step-by-step explanation:

Given:

The quadratic equation in vertex form is given as:

$Y=0.4(X-3)^2+4$

The standard form of a quadratic equation is:

$y=ax^2+bx+c$

Now, in order to convert the given equation into standard form, we have to expand $(X-3)^2$ using the binomial expansion given by:

$(a-b)^2=a^2+b^2-2ab$

Here, $a=X\ and\ b= 3$

Therefore,

$(X-3)^2=X^2+3^2-2(X)(3)\\(X-3)^2=X^2+9-6X$

Now, plug in this expanded form into the original equation. This gives,

$Y=0.4(X^2+9-6X)+4$

Now, we use distribute 0.4 inside the parenthesis. This gives,

$Y=0.4X^2+(0.4\times9)-(6X\times0.4)+4\\Y=0.4X^2+3.6-2.4X+4\\Y=0.4X^2-2.4X+4+3.6\\Y=0.4X^2-2.4X+7.6$

Therefore, the standard form of the given equation is:

$Y=0.4X^2-2.4X+7.6$

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3 years ago

A DEPOSIT OF $600 EARNS 2.5% INTEREST FOR 6 YEAR?

nlexa [21]

Answer: $73.80 in interest over a 6 year period

Step-by-step explanation:

600*0.0205= 12.30*6=73.80

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3 years ago

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Simora [160]

18 time trials were conducted during the experiment. I got this by adding all the dots together. And the answer for the second one is D or the last answer.

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2 years ago

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Show it four ways<br> 15+18=33

KIM [24]

Answer:

Check Explanation

Step-by-step explanation:

15 cars plus 18 cars is 33 cars

15 fish plus 18 fish is 33 fish

15 cups plus 18 cups is 33 cups

15 dollars plus 18 dollars is 33 dollars

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3 years ago

Please I need help PLEASE​

Please I need help PLEASE