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Evgesh-ka [11]
3 years ago
7

For questions 20 through 23, use the graph below.

Mathematics
1 answer:
spayn [35]3 years ago
8 0

Answer:

20) yes

21) -1

22) 1

23) -4

Step-by-step explanation:

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What is the average rate of change for the function f(x)=3(0.25)^x over the interval -2 ≤ x ≤ 0
diamong [38]
Answer:
-22.5


Explanation:
Use the average rate of change equation
f(b)-f(a) / b-a
f(b) = f(0) = 3(.25)^0 = 3
f(a) = f(-2) = 3(.25)^-2 = 48

(3-48)/ 0-(-2)
(-45) / 2
-22.5
8 0
3 years ago
ms. guerra picked 32 students to help her decorate her door. she picked 8 more girls than boys. what is the experimental probabi
katrin2010 [14]

Answer:

5/8

Step-by-step explanation:

First we need to figure out how many girls  and boys there are.

g = girls

b = boys

g = b+8  ( eight more girls than boys)

b = g-8

There are 32 students)

g+b =32

Substitute b = g-8 into the equation

g + (g-8) = 32

Combine like terms.

2g-8 = 32

Add 8 to each side.

2g -8+8 = 32+ 8

2g = 40

Divide by 2

g = 20

There are 20 girls

The experimental probability of picking a girl is

girls/ total

20/32 = 5/8  

4 0
3 years ago
If a truck goes 30 km in 30 minutes what is its average speed?
Westkost [7]

Answer:

16.7 m/s

Step-by-step explanation:

speed is always in units meters/seconds.

To get this unit, we need to convert the data into the right units.

30 km * 1000m = 30000 m

30 minutes * 60 seconds = 1800 seconds

30000 m / 1800 sec = 16.7 m/s

3 0
4 years ago
0.6239 as a fraction
anastassius [24]
6239/10,000 or 6239/10^4
Hope I helped.
7 0
3 years ago
Can you help me with this?
Firdavs [7]
I don’t know this answer but I think it’s 81
3 0
4 years ago
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