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Naya [18.7K]
3 years ago
10

Any one know this one maybe

Mathematics
1 answer:
s2008m [1.1K]3 years ago
6 0

Answer:

I have no clue,

Step-by-step explanation:

I just wanted the points

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X =2y - 4 <br> x + 5y = -66<br> what is the x - value of the solution to this system of equation
stich3 [128]

Answer:x=-8 and y=-2

Step-by-step explanation:plug in for x.7(2y-4)+5y=6-6614y-28+5y=-6619y-28+-6619y=-38y=-2put it back in.

3 0
3 years ago
If Sin x = -¼, where π &lt; x &lt; 3π∕2 , find the value of Cos 2x
Sliva [168]

Answer: 7/8

Cos2x has 3 formulas, Sinx is given in the question, we should use the formula with sinus. I guess that's the solution.

5 0
3 years ago
Find the distance BF for the points B(1,-1) and F(-3,5)
Nadusha1986 [10]
Use the distance formula: 
<span>\sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}
<span>
Plug in the given coordinates: 
</span><span>\sqrt{(-3-1)^2 + (5-(-1))^2}
<span>
Simplify: 
</span>\sqrt{(-3-1)^2 + (5+1))^2}

\sqrt{-4^2+ 6^2}

\sqrt{16+36}

\sqrt{52}
You can leave it as: \sqrt{52}or in decimal form as: 7.2
</span></span>
6 0
4 years ago
the late fee for library books is $2.00 plus 15 cents each day for a book that is late. If Maria's fee for a late book was $3.20
love history [14]

Answer:

Maria's book was 8 days late

Step-by-step explanation:

According to the information given, you can write an equation that states that 15¢ multiply for the number of days that the book was late plus $2 is equal to $3.20:

0.15x+2= 3.20

x= number of days that the book was late

Now, you have to solve for x:

0.15x= 3.20-2

0.15x= 1.20

x= 1.20/0.15

x= 8

The book was 8 days late.

5 0
2 years ago
5 1/2 meters of fabric is used to make curtains. 2 7/8 meters of fabric is used to make a flag. How much more fabric is used to
Feliz [49]

Answer:Exact Form: 21/8

Decimal Form:

2.625

Mixed Number Form:2 5/8

Step-by-step explanation:In the question the "how more" quote explains that it will be subtraction so you subtract 5 1/2 - 2 7/8 then you get the answer at the top

7 0
3 years ago
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