3 years ago

Will mark Brainiest!! Help asap

Mathematics

1 answer:

lys-0071 [83]3 years ago

7 0

Answer:

Step-by-step explanation: because thats my answer

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The scale for a drawing is 1 centimeter to 5 meters. If the actual object is 35 meters, the drawing is _____ centimeters long.

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I was thinking maybe A

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(-3,-4) with slope 3

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Es in a restaurant and earn $5.15/hr. How many hours must you work in order to make at least $200 to buy your ne

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3 years ago

Simplify radicals on the square root of 56

Tanzania [10]

Answer:

4 $\sqrt{14}$

Step-by-step explanation:

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ ⇔ $\sqrt{ab}$

Given

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3 years ago

Using suitable algebraic identities, find the value of<br> 2004^2 - 2003^2 + 2002^2 - 2001^2

PSYCHO15rus [73]

$(x+1)^2-x^2=(x^2+2x+1)-x^2=2x+1$

Let $x=2003$ . Then

$2004^2-2003^2=(2003+1)^2-2003^2=2\cdot2003+1=4007$

Similarly, if $x=2001$ , then

$2002^2-2001^2=2\cdot2001+1=4003$

$2004^2-2003^2+2002^2-2001^2=4007+4003=8010$

Alternatively, you can consider the larger expression

$(x+3)^2-(x+2)^2+(x+1)^2-x^2$

Expanding each binomial product gives

$(x^2+6x+9)-(x^2+4x+4)+(x^2+2x+1)-x^2=4x+6$

Then if $x=2001$ , we get

$2004^2-2003^2+2002^2-2001^2=4\cdot2001+6=8010$

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3 years ago