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nexus9112 [7]
3 years ago
10

In each part, a and b represent the length of a leg of a right triangle, and c represents the length of its hypotenuse. Find the

missing length, given the other two lengths.

Mathematics
1 answer:
Pie3 years ago
4 0

Answer:

c=13 and a=20

Step-by-step explanation:

Here you need to use the Pythagoras theorem :

c²=a² + b²

c = √a² + b²

c = √(12)²+(5)²

c= √144+25

c = √169

c = 13

2) c²=a²+b²

    b= √c²-b²

    b= √(29)²-(21)²

    b = √400

    b = 20

In 2 you change your formula just so that it can be easier and just calculate your length straight forward but you can also just do it in the original equation

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Answer:

Step-by-step explanation:

Negative 2/3 means -2/3

Hence;

1 + (-2/3) - (-m)

= 1 - 2/3 + m (positive x negative = negative, negative x negative = positive)

Substituting 9/2 for the value of m

= 1 - 2/3 + 9/2

The L.C.M = 6

= ( 6 - 4 + 27)/6

= 29/6

8 0
3 years ago
Melanie makes $3.00 less per hour babysitting than her best friend, Carita. If the combined hourly rate of Melanie and Carita is
marysya [2.9K]

Answer:

B 6.00

Step-by-step explanation:

M= 6$

C= 9$

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4 years ago
Peter is reading a 193-page book. He has read three pages more than one fourth of the number of pages he hasnt yet read. How man
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<span>Let n = the number of pages not read
Then the number of pages read = n/4 + 3
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n + n/4 + 3 = 193
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5 0
3 years ago
A training field is formed by joining a rectangle and two semicircles, as shown below. The rectangle is 89m long and 66m wide. F
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The area of the field will be given by:
Area=[area of the semi circle]+[area of rectangle]
Area of semicircle is given by:
Area=πr^2
where;
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Area=3.14*33^2
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The area of the rectangle is given by:
Area=89*66
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6 0
3 years ago
Solve the equation 2 cos ( x ) + 1 = 0 2 cos x + 1 = 0 , 0 ≤ x ≤ 2 π 0 ≤ x ≤ 2 π . Show all of your work
TiliK225 [7]

Answer:

2π/3, 4π/3

Step-by-step explanation:

I interpret your question as asking us to solve the equation

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2cos(x) = -1

cos(x) = -½x  

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Since the cosine is negative, x must be in the second or third quadrant.

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8 0
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