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vodomira [7]
3 years ago
15

HELP ME WITH MY MATH

Mathematics
1 answer:
Simora [160]3 years ago
5 0

Answer:

Function is sqrt(4-x)

Step-by-step explanation:

If you need longer answer Write me

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PQR is a triangle. PR = 13 cm, PQ = 12 cm and angle QPR = 30°<br> Calculate the length of QR.
Deffense [45]

Answer:

6.55 cm

Step-by-step explanation:

A triangle is a polygon with three sides and three angles. Types of triangles are isosceles, acute, scalene, obtuse, right and equilateral triangle.

Cosine rule is used to show the relationship between sides and angles of a triangle. If a, b, and c are sides of a triangle, while A, B, and C are angles opposite to the corresponding sides. Then:

c² = a² + b² - 2ab*cos(C)

Given that PR = 13 cm, PQ = 12 cm and angle QPR = 30°, hence:

QR² = PR² + PQ² - 2(PR)(PQ)cos(∠QPR)

QR² = 13² + 12² - 2(13)(12)cos(30) = 169 + 144 - 270

QR² = 43

QR = 6.55 cm

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3 years ago
An investment had return of 13% if inflation was 4.1% what was your real return ?
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Answer: 8.9%

Step-by-step explanation: 13 - 4.1

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2 years ago
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