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Vedmedyk [2.9K]
3 years ago
10

How do you work out the size of angle x ?

Mathematics
2 answers:
Andreyy893 years ago
8 0

Answer:

117°

Step-by-step explanation:

Angle of straight line is 180°

Angles in a triangle add up to 180°

starting at right

180 - 101 = 79° at right side angle in triangle

now solving left side angle

180 - 38 - 79 = 63°

now solving x using left side angle, must add to 180°

x + 63 = 180°

x = 117°

hammer [34]3 years ago
3 0

Answer:

117

Step-by-step explanation:

101=38+(180-x)

101-38=180-x

63=180-x

x=180-63=117

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Answer:

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3 years ago
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Point AA is located at (5,-6)(5,−6) on the coordinate plane. Point AA is reflected over the xx-axis to create point A'A ′ . What
Free_Kalibri [48]

Answer: (5, 6)

Step-by-step explanation:

   The trick to reflect points over the x -axis is (x, y) to (x, -y). In other words, the x value will stay the same and we will change the sign of the y value.

(5, -6) -> (5, 6)

      The ordered pair to describe A'A' should be (5, 6).

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1 year ago
PLSSSS HELPPP MEEEEEE
labwork [276]
Circumference of the smaller circle, using C = \pi d, is approximately equal to 18.85 (I used the high floating point precision approximation of pi my calculator has in memory, then rounded to 2 decimal points.)

Using the formula S = 0.2L, which in English says "the smaller circle's circumference is equal to 20% of the larger circle's", we can substitute the known value S: 18.85 = 0.2L and solve for L: \frac{18.5}{0.2} = L, L = 92.5.

So the larger circle has a circumference approximately equal to 92.5 units.  

 
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3 years ago
Please help i am not smart
Olegator [25]

Answer:

Step-by-step explanation:

Number of shells she had in the begining = 40

Number of shells collected in the morning and at noon = 6 + 3 = 9

Now the number of shell at the end = 40 + 9 = 49

Icreased shells = 49 - 40 = 90

\text{Percentage increase = $\dfrac{49- 40}{40}*100$}

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4 0
2 years ago
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Find the lateral area and surface area of a cone with a radius of 12 and a height of 21
marishachu [46]

Answer:

The Lateral Surface Area is 911.32 square unit and

Total Surface Area is 1361.7 square unit.

Step-by-step explanation:

For a given Cone

Radius (r) = 12

Height (h) = 21

<u>For Lateral Surface Area</u>

<h3><u>Formula</u><u>:</u> </h3>

A = πr√r² + h²

A = 3.14 × 12 × √(12)² + (21)²

A = 3.14 × 12 × √144 + 441

A = 3.14 × 12 × √585

A = 37.68 × 24.18

A = 911.32 square unit

Now,

<u>For</u><u> </u><u>Total</u><u> Surface Area</u>

<h3><u>Formula:</u></h3>

A = πrl + πr²

For Slant height (l)

l² = r² + h²

l² = (12)² + (21)²

l² = 144 + 441

l² = 585

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A = πrl + πr²

A = πr(l + r)

A = 3.14 × 12 × (24.14 + 12)

A = 3.14 × 12 × 36.14

A = 1361.7 square unit

Thus, The <u>Lateral Surface Area</u> is 911.32 square unit and <u>T</u><u>otal Surface Area</u> is 1361.7 square unit.

<u>-TheUnknownScientist</u>

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3 years ago
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