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lora16 [44]
3 years ago
7

NEED ANSWER ASAP!!! Do the data in this table show a function? If you switch the input and the output values is it a function?

Mathematics
1 answer:
ser-zykov [4K]3 years ago
4 0

Answer:

no

Step-by-step explanation:

no input can have diffrent outputs if you change the input values then yes it is a function hope this helps god bless

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Mr. Myers wants to join a music club. The 1st choice music club charges a $5 sign-up fee and $1 each song. The Superstar music c
Mumz [18]

Answer:

1st choice Music Equation: \$(x+5)

Superstar Music Club Equation: \$3.50x

Solution: 2

Step-by-step explanation:

Given that:

1st choice music club:

Charges for one song = $1

Charges for sign - up = $5

Let the number of songs = x

Total cost = \$5+\$1\times x = \$(x+5)

Superstar music club:

No sign up fee and

Charges for one song = $3.50

Total cost = \$3.50x

Given that, cost of each music club becomes equal:

Putting them same:

x+5=3.5x\\\Rightarrow 2.5x = 5\\\Rightarrow \bold{x =2}

After 2 songs, the cost of both the clubs will become equal.

5 0
3 years ago
The first painter can finish a paint job in 2 hours. The second painter can finish the same job in 8 hours. How long would it ta
xxMikexx [17]
1h 15minutes, I converted each time into fractions, 2hours to \frac{2}{2} and the 8hour to \frac{8}{8}, this means, painter #1 finishes 1/2 of the project in 1 hour, and paither #2 finishes 1/8 of project in 1 hour, now when we make each fraction out of 2 hours, so \frac{2}{2} and \frac{2}{8}, we add them and get \frac{10}{8}, then as mixed number, 1 1/4 which is 1 hour and 15min<em>(1/4 of a hour)</em> I believe im right.
3 0
3 years ago
Scores on an English test are normally distributed with a mean of 31.5 and a standard deviation of 7.3. Find the score that sepa
vladimir1956 [14]

If X is a random variable representing test scores, then the 41st percentile is the score x such that P(X\le x)=0.41. Transform X to the random variable Z that follows the standard normal distribution via X=31.5+7.3Z:

P(X\le x)=P\left(\dfrac{X-31.5}{7.3}\le\dfrac{x-31.5}{7.3}\right)=P\left(Z\le\dfrac{x-31.5}{7.3}\right)=0.41

The z-score for the 41st percentile is about -0.2275, so

\dfrac{x-31.5}{7.3}\approx-0.2275\implies\boxed{x\approx29.8}

6 0
4 years ago
A shop has a sale that offers 20% of all prices.
Nana76 [90]
<h2>Greetings!</h2>

Answer:

40% reduction

Step-by-step explanation:

To answert this, we need to find how much of the price is each percentage. This can be found my subtracting the percent from 100:

Sale price: 100 - 20 = 80

Last day price: 100 - 25 = 75

Now we need to multiply these two values together, remembering to divide both numbers by 100 first:

80 ÷ 100 = 0.8

75 ÷ 100 = 0.75

0.8 * 0.75 = 0.6

Then multiply by 100 to find the percentage:

0.6 * 100 = 60

60% is the end price, but to find the overall reduction we need to subtract this value from 100:

100 - 60 = 40

So there was a 40% reduction on the price.


<h2>Hope this helps!</h2>
6 0
3 years ago
Determine the intercepts of the line.
iogann1982 [59]

Answer:

y-intercept: (0,5)

x-intercept: (5/2,0)

Step-by-step explanation:

-4x+7=2y-3

-4(0)+7=2y-3

0+7=2y-3

7=2y-3

10=2y

5=y <-- y-intercept: (0,5)

-4x+7=2y-3

-4x+7=2(0)-3

-4x+7=-3

-4x=-10

x=\frac{5}{2} <-- x-intercept: (5/2,0)

4 0
3 years ago
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