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Arisa [49]
2 years ago
7

Solve.

Mathematics
1 answer:
Ray Of Light [21]2 years ago
5 0

Step-by-step explanation:

let d+e=2 be equation 1

let d-e=4 be equation 2

lets make d the subject in equa 1

d = 2-e equation 3

put equation 3 in 2

2-e=4

e=2-4

e=-2

put e=-2 in equa 1

d-2=2

d=4

e is -2 and d is 4

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Answer:

Cost of adult ticket = $12.5

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Step-by-step explanation:

Given:

Cost of 6 adult ticket and 5 child ticket = $112.5

Cost of 8 adult ticket and 4 child ticket = $130

Find:

Equation and solution

Computation:

Assume;

Cost of adult ticket = a

Cost of child ticket = b

So,

6a + 5b = 112.5....eq1

8a + 4b = 130 ......eq2

Eq2 x 1.25

10a + 5b = 162.5 .....eq3

eq3 - eq1

4a  = 50

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8a + 4b = 130

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Ty has 230 pages of text to read in the next three days. if he averages 25 pages every 1 1/4 hours, how many hours is he going t
sineoko [7]

Answer:

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LETS prove the 2nd part of the Question

Here concept of right angles is used

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as BA is perp to BD hence angle between them will be 90 degree

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To learn more about Right Angles:

brainly.com/question/7116550

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Answer:

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Step-by-step explanation:

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