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3 years ago

(2y-1)(4y-3) What is the answer to this?

Mathematics

2 answers:

valentina_108 [34]3 years ago

6 0

8y^2-10y+3
FOIL
2yx4y+2yx-3+-1x4y+-1x-3

Likurg_2 [28]3 years ago

4 0

$(2y-1)(4y-3)=2y\cdot4y+2y\cdot(-3)-1\cdot4y-1\cdot(-3)\\\\=8y^2-6y-4y+3=8y^2-10y+3$

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Tomtit [17]

Answer:

$m=\frac{-5}{2}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Slope Formula: $m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Choose any 2 points from the chart.

Point (-6, 11)

Point (-2, 1)

Step 2: Find slope m

Substitute: $m=\frac{1-11}{-2+6}$
Subtract/Add: $m=\frac{-10}{4}$
Simplify: $m=\frac{-5}{2}$

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3 years ago

Secant jkl and jmn are drawn to circle o from an external point ,j. if jk=8,lk=4 and jm=6 what is the length of jn answer

Archy [21]

See the picture attached to better understand the problem

we know that
If two secant segments are drawn to a circle from an exterior point, then the product of the measures of one secant segment and its external secant segment is equal to the product of the measures of the other secant segment and its external secant segment.
so
jl*jk=jn*jm------> jn=jl*jk/jm

we have
jk=8,lk=4 and jm=6
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jn=jl*jk/jm-----> jn=12*8/6----> jn=16

the answer is
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4 years ago

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Komok [63]

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