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julsineya [31]
3 years ago
9

Im so confused pls help

Mathematics
1 answer:
timama [110]3 years ago
5 0
Answer:

a = 49°

Explanation:

You use the rule ‘exterior angle of a triangle’ which states that the exterior angle is equal to the sum of the two opposite interior angles.

To put it mathematically:

a + a = a + 49° (Ext angles of triangle)
a = a - a + 49°
a = 49°
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A 4 meter long ladder leans against a 90 degree wall at a 68 degree angle.
Alenkinab [10]

Answer:

Step-by-step explanation:

We use trig to answer these questions:

sin x = opposite side of a triangle / hypotenuse

cos x = adjacent side / hypotenuse

Construct a right triangle with hypotenuse 4 m and lower angle 68 degrees.

The height of the top of the ladder  is then defined by:

sin 68 degrees = height / 4 m, which yields (4 m)(sin 68) = height =

3.71 m

and the distance of the bottom of the ladder from the wall as follows:

cos 68 degrees = horizontal distance / hypotenuse =

1.50 m

3 0
2 years ago
Evaluate the function f(x) = 5x-3
loris [4]

Answer:

x = 3/5 = 0.600

Step-by-step explanation:

4 0
3 years ago
Which describes how to calculate the range of this data set?
Helen [10]

Answer: subtract 12-4

Step-by-step explanation:

For the range you subtract the smallest number from the biggest number so 12-4.

6 0
2 years ago
I need help with letter B, find the area
Ahat [919]

Answer:

58

Step-by-step explanation:

6*8+2*2+3*2=58

7 0
3 years ago
circle A and circle b are two different circles find the missing values on this table (look at the image)​
balandron [24]

(i) Given radius r = 15 cm ∴ diameter d = 2 x 15 = 30 cm Circumference C = πd units = 227227 x 30 = 66076607 = 94.28 cm (ii) Given circumference C = 1760 cm 2πr = 1760 2 x 227227 x r = 1760 r = 1760×72×221760×72×22 = 160×72×2160×72×2 = 40 x 7 = 280 cm Diameter = 2 x r = 2 x 280 = 560 cm (iii) diameter d = 24m radius r = d2d2 = 242242 = 12 m Circumference C = 2 πr units = 2 x 227227 x 12 = 52875287 = 75.4 m Tabulating the results S. No. radius (r) diameter (d) circumference (C) (i) 15 cm 30 cm 94.28 cm (ii) 280 cm 560 cm 1760 cm (iii) 12 m 24

a bit messy sorry for that

3 0
3 years ago
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