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hjlf
3 years ago
5

This table shows how many sophomores and juniors attended two school events. What is the probability that the student attended t

he jazz concert, given

Mathematics
1 answer:
Eduardwww [97]3 years ago
6 0

Answer:

A. 0.60

Step-by-step explanation:

make a proportion so

36 over 60 = x over 100

36*100= 3600

3600/60

60

.60

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If f ( x ) f(x) is an exponential function where f ( − 3.5 ) = 25 f(−3.5)=25 and f ( 6 ) = 33 f(6)=33, then find the value of f
gavmur [86]

Given:

f(x) is an exponential function.

f(-3.5)=25, f(6)=33

To find:

The value of f(6.5).

Solution:

Let the exponential function is

f(x)=ab^x         ...(i)

Where, a is the initial value and b is the growth factor.

We have, f(-3.5)=25. So, put x=-3.5 and f(x)=25 in (i).

25=ab^{-3.5}         ...(ii)

We have, f(6)=33. So, put x=6 and f(x)=33 in (i).

33=ab^{6}         ...(iii)

On dividing (iii) by (ii), we get

\dfrac{33}{25}=\dfrac{ab^{6}}{ab^{-3.5}}

1.32=b^{9.5}

(1.32)^{\frac{1}{9.5}}=b

1.0296556=b

b\approx 1.03

Putting b=1.03 in (iii), we get

33=a(1.03)^{6}

33=a(1.194)

\dfrac{33}{1.194}=a

a\approx 27.63

Putting a=27.63 and b=1.03 in (i), we get

f(x)=27.63(1.03)^x

Therefore, the required exponential function is f(x)=27.63(1.03)^x.

4 0
3 years ago
I need help with problem 19
alexira [117]

Answer:

24 sides

Step-by-step explanation:

Step 1:

You do 180 - 165.

180 - 165 = 15

Step 2:

You do 360 divided by 15.

360/15 = 24

Step 3:

Write your answer.

Answer: 24 sides

8 0
2 years ago
Read 2 more answers
Solve for x: -2(x + 3) = -4x + 20
Phantasy [73]

Answer:

Step-by-step explanation:

Lets start with 13

-2(13 + 3) = -4(13) + 20

-32 = -52 + 20

-32 = -32

x = 1 basically

now 19

-2(19 + 3) = -4(19) +20

-44 = -76 + 20

-44 = -56

so divide those

-2(31 + 3) = -4(31) + 20

-68 = -124 + 20

-68 = -104

divide them

-2(37 + 3) = -4(37) + 20

-80 = -148 + 20

-80 = -128

4 0
3 years ago
How do the areas of the parallelograms compare?
Anuta_ua [19.1K]
The answer is A;
<span>
The area of parallelogram 1 is 4 square units greater than the area of parallelogram 2.


</span>

4 0
3 years ago
Read 2 more answers
Q and R are not mutually exclusive events. If P(Q)=5/8 and P(R)=1/8 and P(Q and R)=1/32,Find P(q or R)
artcher [175]
The solution for this problem is just adding and subtracting fractions. We all know how to add and subtract function because our teacher since high school teach us how to. P(Q or R) = P(Q) + P(R) - P(Q and R) = 5/8 + 1/8 - 1/32 = 23/32

The answer to this question is 23/32.
8 0
3 years ago
Read 2 more answers
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