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Karo-lina-s [1.5K]
2 years ago
13

PLEASE HELP

Mathematics
2 answers:
bearhunter [10]2 years ago
6 0

Answer:

13.60

Step-by-step explanation:

use Pythagoras theorem

it is c²=a²+b²

c is hypotenus which is the longest side of a right angle triangle

--->now just put 8 on a and 11 on b

this gives us

c²= 8²+11²

c²= under the root 185

\sqrt{185 }

c² = 13.60147051

nearest hundredth is 13.60

hope you understood :)

Zina [86]2 years ago
3 0

Answer:

x = 13.60

Step-by-step explanation:

since it is a right angled triangle , we can use pythagoras theorem ,

hypotenuse^2 = base^2 + perpendicular^2

hypotenuse is the side opposite to the right angle .so here,

H = x .you can take base as 11 and perpendicular as 8

h^2 = p^2 + b^2

x^2 = 8^2 + 11^2

x^2 = 64 + 121

x = \sqrt{185

x = 13.60

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A 13.5-meter ladder leans against a brick wall and the ladder makes a 75∘ with the wall. The distance d the ladder goes up the w
Alex73 [517]

Answer:

3.5 m

Step-by-step explanation:

Use Pythagorean theorem to find the distance (d) the distance goes up the wall = adjacent to the angle 75° that is formed with the wall.

Length of ladder = the hypothenuse = 13.5 m

Thus, we would use:

Cos75 = adjacent/hypothenuse

Cos 75 = d/13.5

Multiply both sides by 13.5

13.5*cos(75) = d

13.5*0.2588 = d

3.4938 = d

d ≈ 3.5 m (nearest tenth)

3 0
3 years ago
Jane Rose’s semimonthly salary is $750. Her yearly salary is A.$9000 B. $12,500 C. $18,000 D. $19,500 E. $21,000
Lunna [17]
A because 750 times 12 because there is 12 months in a year. You get 9000
7 0
3 years ago
Read 2 more answers
Math math math!!!! :/
vekshin1

the answer is B your welcome

6 0
3 years ago
Read 2 more answers
1: 18 is __ % of 30
Zigmanuir [339]

Answer:

1.  60%

2. 70

3. 8%

Step-by-step explanation:

I attached pictures to show my work (sorry if they’re a bit messy)!

4 0
2 years ago
Help help help help help
liubo4ka [24]

Answer:

m(∠y) = 64°

Step-by-step explanation:

From the figure attached,

m(∠e) = 90°

m(∠b) + 67° = 180° [Linear pair of angles]

m(∠b) = 180 - 67

          = 113°

m(∠c) + 75° = 180°  [Linear pair of angles]

m(∠c) = 105°

m(∠a) = m(∠d)

By the property of a polygon,

Sum of the interior angles of a polygon is given by,

Sum of interior angles = (n - 2) × 180°

Here, n = number of sides of the polygon

For n = 5,

Sum of interior angles = (5 - 2)×180°

                                     = 540°

m(∠a) + m(∠b) + m(∠c) + m(∠d) + m(e) = 540°

2m(∠d) + 113° + 105° + 90° = 540°

2m(∠d) + 308 = 540°

2m(∠d) = 540 - 308

m(∠d) = 116°

m(∠d) + m(∠y) = 180°

m(∠y) + 116° = 180° [Linear pair of angles]

m(∠y) = 64°

8 0
3 years ago
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