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Damm [24]
2 years ago
9

Y and x have a proportional relationship, and y = 12 when x = 5. What is the value of y when x = 8?

Mathematics
1 answer:
blagie [28]2 years ago
7 0
Y=kx
12=5k
12/5=2.4
y=2.4*8
y=19.2
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Turn 2 1/2 into a percentage
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Answer:

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Plz hurry!!!! thank you!!!!
Nikitich [7]

Answer:

Area of trapezium = 4.4132 R²

Step-by-step explanation:

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⇒ x = 115°.

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consider triangle NOS;

line joining O and N bisects the angle ∠MNP

⇒ ∠ONS = \frac{115}{2} = 57.5°

Now, tan(57.5°) = \frac{OS}{SN}

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Now, draw a line parallel to ST from N to line MK

let the intersection point be Q.

⇒ NQ = 2R

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tan(∠NMQ) = \frac{NQ}{QM}

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⇒ QM = \frac{2R}{2.1445}

QM = 0.9326 R .

⇒ MT = MQ + QT

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⇒ MK = 2×MT = 2×1.5696 R = 3.1392 R

Now, area of trapezium is (sum of parallel sides/ 2)×(distance between them).

⇒ A = (\frac{NP + MK}{2}) × (ST)

       = (\frac{1.274 R + 3.1392 R}{2}) × 2 R

       = 4.4132 R²

⇒ Area of trapezium = 4.4132 R²

5 0
3 years ago
Dan painted a wall of 25m by 20m and the money he got for his work was Rs. 20 per square
guajiro [1.7K]

Answer:

He made Rs.500

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Hello!

Let's solve this equation for y first.

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