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aleksklad [387]
2 years ago
5

The intensity of light produced by a light source varies

Mathematics
1 answer:
Harrizon [31]2 years ago
3 0

Answer:

45 foot-candles.

Explanation:

I ∝ 1d2⇒I=kd2

where k is a proportionality constant.

We can solve this problem in two ways, either solving for k and subbing back in or by using ratios to eliminate k. In many common inverse square dependences k can be quite a lot of constants and ratios often save on calculation time. We will use both here though.

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write a word problem that can be solved using a system of two linear equations. solve the problem and give the meaning of the an
dmitriy555 [2]

Answer:

The sum of two numbers is 25. One of the numbers exceeds the other by 9. Find numbers

<h3>here</h3>

the other number = x + 9

Let the number be x. 

Sum of two numbers = 25

According to question, x + x + 9 = 25

⇒ 2x + 9 = 25

⇒ 2x = 25 - 9

⇒ 2x = 16

⇒ 2x/2 = 16/2

⇒ x = 8

Therefore, x + 9 = 8 + 9 = 17

Therefore, the two numbers are 8 and 17.

5 0
3 years ago
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3. Which sequence has a common difference of three? *
Andrej [43]

Answer:

2, 6, 18, 54..

Step-by-step explanation:

2, 6, 18, 54...

2 x 3 = 6

6 x 3 = 18

18 x 3 = 54

54 x 3 = ...

8 0
3 years ago
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students recorded the total number of pages and chapters in each of several books on the scatterplot. Based on the sbcatterplot,
Natalija [7]

Answer:

7

Step-by-step explanation:

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3 years ago
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Jenna has a savings account invested in stocks and bonds. 20% of her savings is in bonds. If Jenna has $2,200 in bonds, how much
VladimirAG [237]

Answer: Her total savings are equal to $11,000.

Step-by-step explanation:

Hi, to answer this question we have to write an equation.

The total savings (x) multiplied by the percentage in bonds (in decimal form) must be equal to $2,200.

Mathematically speaking:

x (20/100) = 2,200

Solving for x:

x = 2,200/ 0.2

x = $11,000

Her total savings are equal to $11,000.

Feel free to ask for more if needed or if you did not understand something.

4 0
3 years ago
Which is the graph of g(x) = (0.5)x + 3 – 4?
Yanka [14]
Slope is 1/2 and the y intercept is -1
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3 years ago
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