Evaluate the expression for x = 5, y = 3, and z = 14 . 5x−6y+20z4yz Enter your

Mathematics

2 answers:

Whitepunk [10]3 years ago

8 0

Answer:

Step-by-step explanation:

if you are in k12

givi [52]3 years ago

7 0

Answer:the answer is 4 that is truly The answer

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Verify identity list steps. Cot(t)(1-cos^2(t))=cos(t)sin(t)

storchak [24]

Remember: We have to work from either the LHS or the RHS.
(Left hand side or the Right hand side)

You should already know this:

$\huge{Cot(t) = \frac{1}{tan(t)} = \frac{1}{\frac{sin(t)}{cos(t)}} = 1\div \frac{sin(t)}{cos(t)} = 1\times \frac{cos(t)}{sin(t)}=\boxed{\frac{cos(t)}{sin(t)}}$

You should also know this:

$sin^2(t) + cos^2(t) = 1\\\\\boxed{sin^2(t)} = 1 - cos^2(t)$

So plugging in both of those into our identity, we get:

$\frac{cos(t)}{sin(t)}\cdot sin^2(t) = cos(t)\cdot sin(t)$

Simplify the denominator on the LHS (Left Hand Side)

We get:

$cos(t) \cdot sin(t) = cos(t) \cdot sin(t)$

LHS = RHS

Therefore, identity is verified.

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3 years ago

Please help! I really need it

nirvana33 [79]

Add all sides.
5x+2+3x+8+4x-1
Combine like terms
12x+9
Subtract nine to get it on the other side of the equal sign
12x= -9
Divide by twelve
x=-9/12
Simplify
x=-3/4
Plug in x.

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3 years ago

Each of the letters in the word APPLE is on separate cards, face down on the table. If you pick a card at random, what is the pr

Lina20 [59]

Probability =

(number of possible ways to succeed)
divided by
(total number of possible outcomes) .

Number of ways to succeed = 2 (pick the 'A' or the 'L')

Total number of possible outcomes = 5 (the cards on the table) .

Probability of success = 2/5 = 40% .

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Answer:

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2 years ago

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Goryan [66]

The intersected arc is the arc opposite the angle in question, here arc ABE.

Answer: ABE, last choice

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