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djverab [1.8K]
3 years ago
14

Calculate cos to two decimal places

Mathematics
1 answer:
Mila [183]3 years ago
3 0
Cos to 2 decimal places is -0.90

:)
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1986gram=................litters​
sladkih [1.3K]

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I think you have asked a wrong question there should be 1986mililitre or _kg

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3 years ago
X(x+1)-1=4<br> ---<br> please help stuck on this question
Sloan [31]

Answer:

x=2

Step-by-step explanation:

use distributive property: x^2+2x-1=4

remove the -1 by adding 1 on both sides: x^2+2x=5

use the guadratic fromula:  ax²+bx+c=0

plug in the equation x^2+2x-5=0

a,b and c are the coefficients to plug into the formula

a=1, b=2, c=-1

Finally, you will find that x=2

8 0
2 years ago
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I don’t understand this one
Masja [62]

Answer:

  see below

Step-by-step explanation:

Put -1 where x is in each expression and evaluate it.

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You will find that the expression is zero when the numerator is zero. And you will find the numerator is zero when it has a factor that is equivalent to ...

  (x +1)

Substituting x=-1 into this factor makes it be ...

  (-1 +1) = 0

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Evaluating the first expression, we have ...

\dfrac{4(x+1)}{(4x+5)}=\dfrac{4(-1+1)}{4(-1)+5}=\dfrac{4\cdot 0}{1}=0

This first expression is one you want to "check."

You can see that the reason the expression is zero is that x+1 has a sum of zero. You can look for that same sum in the other expressions. (The tricky one is the one with the factor (x -(-1)). You know, of course, that -(-1) = +1.)

5 0
3 years ago
I need help ASAP please giving brainliest
vlabodo [156]

Answer:

Step-by-step explanation:

A and B form a right angle

meaning that A+B=90

if A=58

B=90-58 = 32

answers

B is acute angle, true

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Last statement is true

6 0
3 years ago
Six less than the product of 12 translate to algebraic expressions
Y_Kistochka [10]

Answer:

12 multiply 6 or 12*6.

Step-by-step explanation:

5 0
3 years ago
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