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Kamila [148]
3 years ago
9

Help me please thanks:)))

Mathematics
1 answer:
yaroslaw [1]3 years ago
3 0
125 = 5 * 5 * 5 = 5³

90 = 2 * 3 * 3 * 5 = 2 * 3² * 5

92 = 2 * 2 * 23 = 2² * 23
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Express as a ratio in whole numbers 1/2 : 1/4 : 1/12
Gelneren [198K]

Answer:

6 : 3 : 1

Step-by-step explanation:

Given

\frac{1}{2} : \frac{1}{4} : \frac{1}{12} ( multiply each part by 12 , the LCM of 2, 3, 12 to clear the fractions )

= 6 : 3 : 1

7 0
3 years ago
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<em> 300 times larger than the virus.</em>

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 <u>compare the numbers</u>.

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

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 <u>diameter of the bacteria in the numerator</u>, thus <u>if the quotient is larger than 1, it would mean that the bacteria is greater and by how much.</u>

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
A rectangular garden that measures 6 feet by 8 feet is roped off to form a
Feliz [49]

Answer:

10feet

Step-by-step explanation:

We solve this question, using Pythagoras Theorem to solve for the other side.

Pythagoras Theorem states that

c² = a² + b²

c = √(a² + b²)

In the question, a = 6 feet

b = 8 feet

c = length of the rope

c = √6² + 8²

c = √36 + 64

c = √100

c = 10 feet

The length of the rope is 10 feet

8 0
3 years ago
What is 8 divided by 1/2
patriot [66]

Answer:

16

Step-by-step explanation:

8 \div  \frac{1}{2}  = 8 \times  \frac{2}{1}

Because dividing by a fraction is the same thing as multiplying by reciprocal

4 0
3 years ago
Read 2 more answers
___ divided by 9=7<br><br> For some reason I can’t get it right
Hatshy [7]

Answer:

63

Step-by-step explanation:

9*7=63

63/9=7

7 0
3 years ago
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