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babymother [125]
3 years ago
5

Can you guys help on simplifying 3 (-4)

Mathematics
1 answer:
Volgvan3 years ago
8 0

Answer:

sure

Step-by-step explanation:

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How do you find the general solution for cos2A=cos^2A
eduard

Answer:

A =  0 +/- nπ radians ,  where n is an integer.

Step-by-step explanation:

cos 2A =  cos^2 A

Use the identity cos 2A = 2 cos^2 A -1  :

2cos^2 A - 1 = cos^2 A

cos^2 A = 1

Cos A = +/-1

When cos A = 1,  A = 0 +/- 2nπ radians.

when cos A = -1, A = π +/- nπ radians.

6 0
3 years ago
Translate the following written expression into a mathematical expression. Then, find the expression's value when a = 186 and b
antoniya [11.8K]

Answer: The correct answer is option A: 6

Step-by-step explanation: We shall start by splitting the word problem into bits to ease our calculations.

We start with “the quotient of a and 6...” and that can be expressed as

a/6 where a equals 186, this becomes

186/6 and this equals 31.

Note that quotient means the result derived from dividing two numbers/values.

Next, “The difference of ... and b squared”

The missing part of this statement has been calculated as 31, so this can now be written as “The difference of 31 and b squared” where b equals 5 and b squared now equals 25. Hence what we have is the difference of 31 and 25

That is, 31 - 25 and that equals 6.

Therefore, the expression can now be written out as;

(a/6) - b^2

When a equals 186 and b equals 5, the answer is 6

8 0
3 years ago
a crane cable can support a maximum load of 15,000 kg. if a bucket has a mass of 2,000 kg and gravel has a mass of 1,500 kg for
Brut [27]
2000 + 1500g ≤ 15000
1500g ≤ 15000 - 2000
1500g ≤ 13000
g ≤ 13000/1500
g ≤ 8 2/3

Therefore, the crane can safely lift a maximum of 8 2/3 cubic meters of gravel.
7 0
3 years ago
Read 2 more answers
Barry used a number line to simplify a numerical expression on a math test.
gavmur [86]

Answer:

i think its 14 if the number starts all the way at -10 youd have to add 14 to get to four

3 0
3 years ago
Select the correct answer.<br> What is the value of x in the triangle?
Alenkinab [10]

Answer:

A. 4

Step-by-step explanation:

SOH CAH TOA

Opposite & hypotenuse - sin

Sin(30) = o/8

x 8

O = 8 x Sin(30)

O =4

Hope this helps!

6 0
2 years ago
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