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puteri [66]
3 years ago
10

Multiply (7x – 6)(8x +3). A. 56x2 – 27x – 18 B. 12x2 – 50x + 8 C. 56x2 – 18 D. 56x2 – 69x + 18

Mathematics
1 answer:
Paha777 [63]3 years ago
7 0
You can use the FOIL method to solve: multiply FIRST, multiply OUTSIDE, multiply INSIDE, multiply LAST to help remember to multiply all terms.

=(7x – 6)(8x + 3)
multiply first term by first term, multiply outside by outside, inside by inside, last by last
=(7x*8x) + (7x*3) + (-6*8x) + (-6*3)
multiply terms
=56x^2 + 21x - 48x - 18
combine like terms
=56x^2 - 27x - 18

ANSWER: A) 56x^2 - 27x - 18

Hope this helps! :)
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First you need to find out how many moles of AsF3 are in 1.92 grams.  
The molar mass of AsF3 is 131.918 g/mole so  
1.92 g * (1 mole)/(131.918g) = .0146 moles AsF3 


 Each mole of AsF3 has 6.02 x10^23 molecules of AsF3 and each molecule of AsF3 has 3 flourines, so you need to convert from moles to molecules AsF3 to atoms of F 
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3 years ago
The length of a rectangle is 26 units less than its width. Ifs is the rectangle's width, then its area is
scZoUnD [109]

Answer:

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Step-by-step explanation:

Length is 26 units less than its width, let the length be x, so the width is x+26, so it's area will be their multiplication,

x(x+26)

since the formula to find area is (length×width)

However thing to note, if you assume the width to be x, the the length will be (x-26), so here the area becomes (x-26)x

since here the length is less than width, (x-26)x is the answer we will use.

Answered by GAUTHMATH

4 0
3 years ago
Using the rules of significant figures, what is the correct answer for the following mathematical equation?
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8 0
3 years ago
write an equation in point slope form of the line that passes through the point (-3,6) and has a slope of 5
quester [9]

Answer:

y=5x+6

Step-by-step explanation:

use the equation y=mx+b

m=slope and b=y-intercept

You can go ahead and insert 5 into the equation because we know that the slope of the line is 5. for b. the y-intercept, we know that points are in (x,y) form so we can infer that -3 is the x and 6 is the y. from here you can plug in the number 6 for b and there's your equation. hope this helps!!

7 0
4 years ago
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