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aalyn [17]
3 years ago
5

Violet knows that her subscription rate for the basic tier of cable television increased from $18.20 to $19.50 at some point dur

ing the calendar year. She paid a total of $230.10 for the year to the cable company. Determine the month of the rate
Mathematics
1 answer:
mezya [45]3 years ago
7 0
The 2 equations are
18.20x+19.50y=230.10
and
x+y=12
where x is the months of original cost and y is months for new cost. Since you know that you paid for one year (12 months) you can make the second equation. Then you want to substitute the first equations x by making the second equation
x=(12-y)
18.20(12-y)+19.50y=230.10
218.40-18.20y+19.50y=230.10
1.30y=11.70
y=9
so that means you had the original rate for 3 months and the new one for 9 months
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Evaluate 150 + 3p for p = 30
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150+3p

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240

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7 0
3 years ago
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Can someone please tell me what the equation for this will be.
Papessa [141]

Answer:

y = 0.8x + 0.5

Step-by-step explanation:

First, find the slope using two pairs of values, (0.5, 0.9) and (0.75, 1.1):

slope (m) = \frac{y_2 - y_1}{x_2 - x_1} = \frac{1.1 - 0.9}{0.75 - 0.5} = \frac{0.2}{0.25} = 0.8

m = 0.8

Find y-intercept, b, by substituting x = 0.5, y = 0.9 and m = 0.8 into y = mx + b

Thus:

0.9 = (0.8)(0.5) + b

0.9 = 0.4 + b

0.9 - 0.4 = b

b = 0.5

To write the equation substitute m = 0.8, and b = 0.5 into y = mx + b.

Thus:

y = 0.8x + 0.5

7 0
3 years ago
Determine whether the samples are independent or dependent.
dybincka [34]

Answer: Option(D) is the correct option

Explanation:

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According to the question ,cholesterol level of 90 men is being assessed  prior and after treatment takes place.Thus,same 90 men are going through drug testing in natural pair form and showing sample dependency before and afterwards of treatment.Thus, further analysis is based upon natural paired data.

Other options are incorrect because sample in the question are not independent due to the link between them and they do persist natural pairing with each other.Thus, the correct option is option(D).

7 0
3 years ago
Can I get some help on these please ?
Ksivusya [100]
Q1
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Q2
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25 is 27 as x is to 55

25/27 = x/55

27x = 25 * 55

x = 50.926

Answer: 50.926 kg of bronze

Q3
Manipulative toys to art toys is 30:40
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6 0
3 years ago
How do I know my multiples ​
Archy [21]

One way to make it easier to multiply, pick a number from a multiplication problem. Then, add the amount of times of the other number.

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Which, 6 x 8 does equal 48.

5 0
3 years ago
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