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hoa [83]
2 years ago
5

a student spends the same amount each week for bus fare. In 5 weeks, he spends $115. Write an equation for his relationship. Let

x = number of weeks
Mathematics
1 answer:
dem82 [27]2 years ago
4 0

Answer:

f(x) = ($23/week)(x)

Step-by-step explanation:

Hello!

Let's determine the unit rate.  I'd suggest finding the cost per week, rather than the weeks covered by a certain amount of money.

Then:

$115

-------- = $23 per week

Then the amount spent as a function of the # of weeks would be:

f(x) = ($23/week)(x)

5 wk

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Select the correct answer.
ICE Princess25 [194]
The correct ois D. -17.5 degrees
Step-by-step explanation:
The daytime temperature in Apple Valley is
falling by 2.5 degrees each day
Therefore, Change in the temperature each day
=-2.5 degrees
Now, we need to find the net change in the daily
temperature after one calendar week
Now, number of days in one calendar week = 7
So, Net change in the daily temperature after
one calendar week = Daily change × Number of
days in one calendar week
Net change in the daily temperature after
one calendar week =-2.5 x7
# Net change in the daily temperature after
one calendar week =-17.5 degrees
Therefore, The correct option is -17.5
degrees
7 0
2 years ago
Lucas’s computer took 480 seconds to download 30 songs. How many seconds per song did it take his computer to download?
Arte-miy333 [17]

Answer:

16 seconds per download

Step-by-step explanation:

480/30 = 16 seconds

4 0
3 years ago
Read 2 more answers
What is the vertex and intercepts for y=(5x-2)(2x+3)
Sophie [7]

Answer:

vertex = (-\frac{11}{20} ,-\frac{361}{40} )

Intercepts for x = (\frac{2}{5} ,0), (-\frac{2}{5} ,0)

intercepts for y = (0,-6)

4 0
3 years ago
Jose jumped 8 1/3 feet. this mas 2 2/3 feet farther than Lila jumped. how far did Lila jump?
UNO [17]
Lila jumped 5 feet. 
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3 0
3 years ago
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Yahoo creates a test to classify emails as spam or not spam based on the contained words. This test accurately identifies spam (
Amiraneli [1.4K]

Answer and Step-by-step explanation:

The computation is shown below:

Let us assume that

Spam Email be S

And, test spam positive be T

Given that

P(S) = 0.3

P(\frac{T}{S}) = 0.95

P(\frac{T}{S^c}) = 0.05

Now based on the above information, the probabilities are as follows

i. P(Spam Email) is

= P(S)

= 0.3

P(S^c) =  1 - P(S)

= 1 - 0.3

= 0.7

ii. P(\frac{S}{T}) = \frac{P(S\cap\ T}{P(T)}

= \frac{P(\frac{T}{S}) . P(S) }{P(\frac{T}{S}) . P(S) + P(\frac{T}{S^c}) . P(S^c) }

= \frac{0.95 \times 0.3}{0.95 \times 0.3 + 0.05 \times 0.7}

= 0.8906

iii. P(\frac{S}{T^c}) = \frac{P(S\cap\ T^c}{P(T^c)}

= \frac{P(\frac{T^c}{S}) . P(S) }{P(\frac{T^c}{S}) . P(S) + P(\frac{T^c}{S^c}) . P(S^c) }

= \frac{(1 - 0.95)\times 0.3}{ (1 -0.95)0.95 \times 0.3 + (1 - 0.05) \times 0.7}

= 0.0221

We simply applied the above formulas so that the each part could come

8 0
2 years ago
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