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AVprozaik [17]
3 years ago
6

Tia and Ken sold snack bars and magazine subscriptions for the school fundraiser. Tia sold 16 snack bars and 4 magazine subscrip

tions and raised $132. Ken sold 20 snack bars and 6 magazine subscriptions and raised $190. What was the cost of a snack bar and the cost for a magazine subscription?
Mathematics
1 answer:
Aliun [14]3 years ago
6 0

Answer:

The value of the snack bar is $ 2 and that of the magazine subscription is 25 $

Step-by-step explanation:

We have a system of two equations and two unknowns, which would be the following:

let "x" be the cost of the snack bar

Let "y" be the cost of the magazine subscription

16 * x + 4 * y = 132

20 * x + 6 * y = 190 => y = (190 - 20 * x) / 6

replacing:

16 * x + 4 * (190 - 20 * x) / 6 = 132

16 * x + 126.66 - 13.33 * x = 132

2.66 * x = 132 - 126.66

x = 5.34 / 2.66

x = 2

for "y":

y = (190 - 20 * 2) / 6

y = 25

Which means that the value of the snack bar is $ 2 and that of the magazine subscription is 25 $

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1. Anne = 21 Bobby=35, 450, 70+40+30=140

Step-by-step explanation:

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6 0
2 years ago
a week before election day, 276 out of 450 people said they would vote for the republican candidate. if 15,240 registered voters
Ann [662]

Answer:

(a) \frac {276}{450}=\frac {y}{15240}

(b) We cross multiply the probability by the total voters

(c) 9347

Step-by-step explanation:

(a)

Probability of getting a republican voter is

\frac {276}{450}=\frac {138}{225}=\frac {46}{75}

\frac {276}{450}=\frac {138}{225}=\frac {46}{75}=\frac {y}{15240}

These are found by dividing the first numerator and denominator by 2, then by 3

To make it complete, the situation is therefore defined as \frac {276}{450}=\frac {y}{15240} where y is unknown value

(b)

Cross multiplication of the probability and number of voters gives the actual figure of y in the equation formed in part a of the question.

(c)

Since we have 15240 voters who plan to participate in election, we cross multiply to get the approximate number of republican voters which yields

\frac {46}{75}\times 15240=9347.2\approx 9347

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3 years ago
What is the length of the line segment whose endpoints are A(-1,9) and B(7,4) in the simplest radical form?
monitta

length : \sf \sqrt{89}

Explanation:

use the distance formula : \sf \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

  • using the formula:

\sf \rightarrow \sf \sf \sqrt{(7--1)^2+(4-9)^2}

\sf \rightarrow \sf \sf \sqrt{(8)^2+(-5)^2}

\sf \rightarrow \sf \sf \sqrt{64+25}

\sf \rightarrow \sf \sf \sqrt{89}

8 0
2 years ago
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