4 years ago

What is the difference between scalene and icicles

Mathematics

1 answer:

Sholpan [36]4 years ago

7 0

Answer: Scalene- No sides are the same.

Isosceles- Two sides are the same.

Step-by-step explanation:

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Solve the following equations | 3x + 3/7 | = 2 1/3

jasenka [17]

Answer:

X∈ $\frac{5}{63}, -\frac{23}{63}$

Step-by-step explanation:

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3 years ago

If a and b are two angles in standard position in Quadrant I, find cos(a+b) for the given function values. sin a=8/17and cos b=1

n200080 [17]

Recall the sum identity for cosine:

cos(a + b) = cos(a) cos(b) - sin(a) sin(b)

so that

cos(a + b) = 12/13 cos(a) - 8/17 sin(b)

Since both a and b terminate in the first quadrant, we know that both cos(a) and sin(b) are positive. Then using the Pythagorean identity,

cos²(a) + sin²(a) = 1 ⇒ cos(a) = √(1 - sin²(a)) = 15/17

cos²(b) + sin²(b) = 1 ⇒ sin(b) = √(1 - cos²(b)) = 5/13

Then

cos(a + b) = 12/13 • 15/17 - 8/17 • 5/13 = 140/221

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2 years ago

URGENT I NEED HELPPPPP

lorasvet [3.4K]

Answer:

8/15

Step-by-step explanation:

Using Pythagorean Theorem the length of XZ is 15.

tan X = opposite / adjacent = YZ / XZ = 8 / 15.

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4 years ago

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trapecia [35]

Answer:

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Step-by-step explanation:

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3 years ago

Retro Rides is a club for owners of vintage cars and motorcycles. Every year the club gets together for a ride. This year, 53 ve

kari74 [83]

21 cars, 32 motorcycles.
create a system of equations using x for cars and y for motorcycles.
$\left \{ {{x+y=53} \atop {4x+2y=148}} \right.$
multiply the top equation by 2 to prepare for elimination method
$\left \{ {{2x+2y=106} \atop {4x+2y=148}} \right.$
subtract terms
$\left \{ {{2x+2y=106} \atop {-4x-2y=-148}} \right. = (-2x = -42)$
divide both sides by negative 2 to solve for x
x =21
plug in x into original equation to solve for y.
21 + y = 53
subtract both sides by 21
y=32

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3 years ago