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Brrunno [24]
3 years ago
15

Write the equation of the line that is perpendicular to the graph of 2x+y =5, and y-intercept is 4.

Mathematics
1 answer:
Sophie [7]3 years ago
7 0
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3 years ago
Show the working out
m_a_m_a [10]

Answer:

59.25 currency ; No. of cans rounded to next whole number

Step-by-step explanation:

Draw a perpendicular line frrom the 12m. line onto the 20m. line. We get a rectangle on the left and a right-triangle on the right.

Using Pythagorous theorem,

Fence = \sqrt{17^{2} - 8^{2}} m = 15 m

So, area of the lawn = ( 1/2 ) * ( 12 + 20 ) * 16 sqm = 240 sqm

So, number of cans needed = 240/100 = 2.4 ≈ 3 [Cause cans can't be partially bought ]

Total cost = 3 * 19.75 currency = 59.25 currency

( However, if cans can be partially bought, then total cost = 47.4 currency )

4 0
3 years ago
10% of £26 is equal to x% of £52. Calculate the value of x.<br><br>​
irina1246 [14]

Answer:

5

Step-by-step explanation:

26 × 10 ÷ 100 = 52 · x ÷ 100

260 = 52 · x

x = 5

6 0
3 years ago
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