Select the correct expanded form for each expression. 155 = . (0.17)3 = .

Mathematics

2 answers:

NNADVOKAT [17]3 years ago

7 0

Answer:

first one is b and the second is d

Step-by-step explanation:hope this helped have a great day (;

Nana76 [90]3 years ago

3 0

FIRST ONE b SECOND d

Step-by-step explanation:

You might be interested in

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

8 0

2 years ago

Please help me will mark brainliest!!! Provide a hand drawn graph attachment pls

Travka [436]

The graph is shown below. I used GeoGebra to create the graph. The graph is restricted on the domain $0 \le x \le 2$ meaning that everything to the left of x = 0 is not drawn, and the same for everything to the right of x = 2.