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3 years ago

I have 7hundreds blocks,5tens blocks,and 8ones blocks.I use my block to model two 3-digit numbers.What could My two numbers be?

Mathematics

1 answer:

Natali [406]3 years ago

8 0

The number is 758 because there is 7 hundred blocks and 5 ten blocks and 8 one blocks which is 758

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In Exercises 51−56, the letters a, b, and c represent nonzero constants. Solve the equation for x

OverLord2011 [107]

Answer:

x = ¾-a

Step-by-step explanation:

x + a = ¾

Subtract a from each side

x + a -a= ¾-a

x = ¾-a

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3 years ago

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Non example of complex fraction.

Law Incorporation [45]

Answer:

42/6

Step-by-step explanation:

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The diameter of cold virus cell is about 3x10-9 meter,and the diameter of a streptoccus bacterium cell is about 9x10-7 meter. Wh

Archy [21]

Here we need to compare the orders of magnitude of two measures.

We will see that the bacteria is 300 times larger than the virus.

We know that:

The diameter of the virus-cell is:

$D_v = 3 \cdot 10^{-9} m$

The diameter of the bacteria cell is:

$D_b = 9 \cdot 10^{-7} m$

So, to compare them, first notice that both are in the same units, meters, so we only need to compare the numbers.

Is common sense to identify the one with the largest exponent as the largest number, and the largest exponent is -7, thus the bacteria should be the larger one.

But let's prove this with math, remember the property:

$\frac{a^n}{a^m} = a^{n - m}$

Let's take the quotient between the diameters and see what we get, I will use the diameter of the bacteria in the numerator, thus if the quotient is larger than 1, it would mean that the bacteria is greater and by how much.

$quotient = \frac{ 9 \cdot 10^{-7} m}{ 3 \cdot 10^{-9} m} = \frac{9}{3} \cdot 10^{-7 + 9}\\\\= 3*10^2$

So we can say that the bacteria is 3*10^2 = 3*100 = 300 times larger than the virus.

If you want to learn more, you can read:

brainly.com/question/4953281

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2 years ago

a rectangular section of land has a length of 5•10^3 meters and a width of 6•10^2 meters. what is the area of land in square met

monitta

A = lw
A = (5 × 10^3)(6 × 10^2)
= 5000 × 600
= 300000
= 3 × 10^6 m^2

4 0

3 years ago

Graph the function f(x) = 1/2(2)^x

xxMikexx [17]

Answer; Down

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2 years ago