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DerKrebs [107]
3 years ago
9

Mrs. Samson asks her students to write an

Mathematics
1 answer:
natta225 [31]3 years ago
6 0
A represents her question she asked her students
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Math! 30 points + brainliest
Ronch [10]

Answer:

A) 9.56x10^38 ergs

B) 7.4x10^-3 mm

Step-by-step explanation:

A) 9.56x10^38 ergs B) 7.4x10^-3 mm A). For the sun, just multiply the power by time, so 3.9x10^33 erg/sec * 2.45x10^5 sec = 9.56x10^38 B) Of the two values 7.4x10^-3 and 7.4x10^3, the value 7.4x10^-3 is far more reasonable as a measurement for blood cell. Reason becomes quite evident if you take the 7.4x10^3 value and convert to a non-scientific notation value. Since the exponent is positive, shift the decimal point to the right. So 7.4x10^3 mm = 7400 mm, or in easier to understand terms, over 7 meters. That is way too large for a blood cell when you consider that you need a microscope to see one. Now the 7.4x10^-3 mm value converts to 0.0074 mm which is quite small and would a reasonable size for a blood cell.



6 0
3 years ago
Read 2 more answers
How to increase 78 by 80%
Oksana_A [137]

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6 0
3 years ago
The buyer for a chain of stores purchased lawn ornaments in bulk, paying $23 each. The stores will sell each lawn ornament for $
Naya [18.7K]

Answer:

The markup percentage is 61.2

Step-by-step explanation:

Given as :

The cost price of each ornaments = $23

The sell price of each ornament = $37.08

Let The markup percentage = x

<u>Now, According to question</u>

Markup percentage = \dfrac{s.p - c.p}{c.p} × 100

Or, x% = \dfrac{37.08 - 23}{23}

Or, x% = \dfrac{14.08}{23}

Or, x% = 0.612

∴ x = 0.612 × 100

I.e x = 61.2

So, The The markup percentage = x = 61.2

Hence, The markup percentage is 61.2 Answer

8 0
3 years ago
How many groups of 3/4 are in 4 1/2
Andreyy89

Problem 1

1/2 = 2/4

The mixed number 4 & 1/2 is the same as 4 & 2/4

Then convert that mixed number to an improper fraction using the formula below

a & b/c = (a*c+b)/c

4 & 2/4 = (4*4+2)/4

4 & 2/4 = 18/4

We could reduce this, but I'll keep it unreduced so that we keep the denominator of 4.

Now think of 3/4 as "3 fourths" and 18/4 as "18 fourths".

We could easily replace "fourths" with "unit" to say 3 units and 18 units respectively.

The problem can be rephrased into this question: "how many groups of 3 units are in 18 units?"

At this point, it's probably clear that there are 6 groupings since 18/3 = 6.

It might help to set up a drawing where there are 6 circles, and inside each circle would be 3 dots. So there are 3*6 = 18 dots total.

<h3>Answer: 6</h3>

===========================================================

Problem 2

3/4 = 9/12

2/3 = 8/12

2 2/3 = 2 8/12

2 & 8/12 = (2*12+8)/12 ... using the formula from earlier

2 & 8/12 = 32/12

Think of "twelfths" as a unit

So asking "how many groups of 9/12 are in 32/12" is the same as asking "how many groups of 9 units are in 32 units".

Divide the two numbers to find out

32/9 = (27+5)/9

32/9 = 27/9 + 5/9

32/9 = 3 + 5/9

32/9 = 3 & 5/9

Notice that if you were to convert the mixed number 3 & 5/9 to an improper fraction (using that formula mentioned), then you should get 32/9 back again.

<h3>Answer:  3 & 5/9</h3>
5 0
2 years ago
Read 2 more answers
If a triangle has side lengths 14,48, and 50 units what type of triangle is it an acute an obtuse a right or no solution.
Snezhnost [94]

Answer:

No solution

Step-by-step explanation:

we know that

The <u>Triangle Inequality Theorem</u> states that the sum of any 2 sides of a triangle must be greater than the measure of the third side

so

In this problem

48+50>14

98>14 -----> is not true

therefore

You can't build a triangle with those dimensions

4 0
4 years ago
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