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aivan3 [116]
3 years ago
9

three friends split the cost of a pizza and a salad. The pizza costs $15 and the salad costs $6. which expression can you use to

find how much each person owes

Mathematics
1 answer:
larisa [96]3 years ago
4 0

The expression is (15+6) */* 3. This is because we add up all the costs to get the total, and divide the total by three because there are three friends splitting the cost.

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Find the probability of the following events , when a dice is thrown once:
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s a die is rolled once, therefore there are six possible outcomes, i.e., 1,2,3,4,5,6.

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P(A)=n(A)n(S)=336=112

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P(A)=n(A)n(S)=636=16

(d) Let A be an event ''of getting a total of 9''. Favourable cases for a total of 9 are (3,6), (6,3), (4,5), (5,4).

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(iii) We have, n(S) = 36

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The equation of the tangent line to the circle passing through the point P is; y = (1/√3)x ± 2/√3

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x² + y² = 1

Since angle of inclination is 30°, then slope is;

m = tan 30 = 1/√3

Then equation of the tangent will be;

y = (1/√3)x + c

Put  (√3)x + c into the given circle equation to get;

x² + ((1/√3)x + c)² = 1

x² + ¹/₃x² +  (2/√3)cx + c² = 1

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Thus;

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II) Radius from the given equation is 1. Thus, we will use trigonometric ratio to find the x and y intercept;

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Intercept is positive. Thus;

x = (2/√3)/(1/√3)

x = 1

y - intercept is positive at x = 0;

y = (1/√3)0 ± 2/√3

y = 2/√3

Read more about Equation of tangent at; brainly.com/question/17040970

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