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alina1380 [7]
3 years ago
15

Can someone please help meeee ?

Mathematics
1 answer:
nataly862011 [7]3 years ago
5 0
It could possibly be the first on but I’m not completely sure
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In a classroom of 28 students: 19 of the students have brown eyes 13 of the students wear glasses 7 of the students do not have
V125BC [204]

Total students = 28

Students with brown eyes = 19

students wear glasses = 13

Not brown eyes or no glasses = 7


Not brown eyes = 28 - 19 = 9

Not wearing glasses = 28 - 13 = 15

Not brown eyes and wearing glasses = 15 - 9 = 6

Brown eyes and wearing glasses = 13 - 6 = 7 <==== answer

7 0
3 years ago
Read 2 more answers
One estimate of the population of the world on January 1, 2005, is
inn [45]

Answer:

8,566,379,470 people

Step-by-step explanation:

Let's start simple.  In order to find the population increase on January 1, 2006, we need to multiply 6,486,915,022 by 1.4% and add it to 6,486,915,022.

  1. 6,486,915,022*1.4% = 90,816,810.308
  2. 90,816,810.308+6,486,915,022 = 6,577,731,832.31 people on January 2006.

Note that the above two steps gives the same answer as 6,486,915,022*1.014.

So we need to do this for each year.  20 years pass between 1/1/2005 and 1/1/2025.  

We need to do 6,486,915,022*1.014*1.014*1.014... 20 times.

This is equivalent to 6,486,915,022*1.014^{20}.

Multiplying it out gives us 8566379470.2 = 8,566,379,470 people.

4 0
3 years ago
Write equation for the ellipse with foci (9,0) and (-9,0) and endpoints on the verticle axis of (0,2) and (0,-2).
Inga [223]
See the answer on the attached 

6 0
3 years ago
Which lines in the graph have a slope greater than 1 but less than 2?
lapo4ka [179]

Answer:

Lines 3 and 4

Step-by-step explanation:

Let's examine the slope of each of the given lines to have the exact value and be able to answer the question. We use the definition of: slope=\frac{rise}{run}

Line 1: slope=\frac{rise}{run}=\frac{6}{2} = 3

Line 2: slope=\frac{rise}{run}=\frac{6}{3} = 2

Line 3: slope=\frac{rise}{run}=\frac{6}{4} = 1.5

Line 4: slope=\frac{rise}{run}=\frac{6}{5} = 1.2

Line 5: slope=\frac{rise}{run}=\frac{6}{6} = 1

Therefore the lines that have slope strictly greater than 1 and less than 2 are:

Lines 3 and 4

3 0
3 years ago
Read 2 more answers
Select "Growth" or "Decay" to classify each function.
allochka39001 [22]

1. The growth rate equation has a general form of:

y = A (r)^t

The function is growth when r≥1, and it is a decay when r<1. Therefore:

y=200(0.5)^2t                    --> Decay

y=1/2(2.5)^t/6                  --> Growth

y=(0.65)^t/4                       --> Decay

 

2. We rewrite the given equation (1/3)^d−5 = 81

 

Take the log of both sides:

(d – 5) log(1/3) = log 81

d – 5 = log 81 / log(1/3)

d – 5 = - 4

 

Multiply both sides by negative 1:

- d + 5 = 4

So the answer is D

5 0
3 years ago
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