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3 years ago

I have some homework questions that i am having problems finding. Please help!

1 answer:

7 0

[1] There are two main values to science. The first is that mathematics is where we study numbers... and they appear everywhere in the world around us! We see whole numbers when we count, negative numbers when we are in debt (just look at the national debt!), fractions when we share things between people (think pizza, or chocolate bars, yum!), and decimals when we measure distances, lengths, areas, and sizes. In fact, numbers can be used to describe almost anything. Even color can be described as the amount of red, green, and blue light (the RGB system which is how computer screens work).

The second value to science is the thinking and ideas of mathematics. Mathematics is where we learn the ideas of distance and sizes (such as area and volume). It teaches us to ask, "How far?" or "How big?" These ideas are applied to study geography, biology, astronomy and more. We also learn to look for patterns. In math, these patterns are usually number or geometric patterns, but science applies this idea to discover patterns in the weather, agriculture, oceans, and more.

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Factor completely: 4a^2+b^2−c^2+4ab

Lapatulllka [165]

Answer:

$4a^{2} + b^{2} - c^{2} + 4ab$ $= (2a + b -c) (2a + b+c)$

Step-by-step explanation:

Here, the given expression is $4a^{2} + b^{2} - c^{2} + 4ab$

or, the given expression can be written as

$(4a^{2} + b^{2} + 4ab ) - c^{2}$

Now, by ALGEBRAIC IDENTITY: $(x+y)^{2} = x^{2} + y^{2} + 2xy$

So, similarly here, $(2a +b){2} = 4a^{2} + b^{2} + 4ab$

Hence, on simplification, the expression

$(4a^{2} + b^{2} + 4ab ) - c^{2} = (2a + b)^{2} - c^{2}$

Now, by ALGEBRAIC IDENTITY: $(x +y)(x-y) = x^{2} - y^{2}$

So, similarly $(2a + b)^{2} - c^{2}$ $= (2a + b -c) (2a + b+c)$

Hence, the given expression is factorized as:

$4a^{2} + b^{2} - c^{2} + 4ab$ $= (2a + b -c) (2a + b+c)$

7 0

3 years ago

Find the size of a-g g e d a 70

lesya692 [45]

Step-by-step explanation:

a=110

b=110

c=70

d=70

e=110

f=70

g=110

3 0

2 years ago

Simply 10^6 over 10^-3

NNADVOKAT [17]

Your answer will be 10³

3 0

3 years ago

Find the lateral surface area of the rectangular prism in centimeters.

RideAnS [48]

Answer:

The lateral surface area is 84 cm^2

Step-by-step explanation:

The rectangular prism is a geometric figure that has rectangles at each of it's faces. The lateral surface is formed by four rectangles, the ones formed by the length and the height and the ones formed by the width and the height. So in order to calculate the area of this surface we need to calculate the area of these rectangles and sum it. We have:

A_lateral = 2*width*height + 2*length*height

A_lateral = 2*6*3 + 2*8*3 = 36 + 48 = 84 cm ^2

So the lateral surface area is 84 cm^2

5 0

4 years ago

A dentist selected 16 patients at random from a population of more than 1000 patients and asked them how many times the patient

Snezhnost [94]

Well, mode is the number that occurs most, so the answer would be 7, since that is the most appearing number.

5 0

4 years ago

Read 2 more answers