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Nimfa-mama [501]
3 years ago
9

Help Please!! 30 Points! Simplify the given expression. 5/ 4x^2-36 + 8/ 2x+6

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
6 0

Answer:

Step-by-step explanation:

\frac{5}{4x^2-36} +\frac{8}{2x+6} \\=\frac{5}{(2x)^2-6^2} +\frac{8}{2x+6} \\=\frac{5}{(2x+6)(2x-6)}+\frac{8}{2x+6}\\  =\frac{5+8(2x-6)}{(2x+6)(2x-6)} \\=\frac{5+16x-48}{(2x+6)(2x-6)} \\=\frac{16x-43}{4x^2-36}

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The radius of Earth is about 3,980 miles. What expression can be used to find the approximate diameter of Earth?
Tatiana [17]
To find the diameter, you use the formula: 2x. we use 2x because the radius is 2 times the diameter.

so, if the radius is 3,980, then we substitute that into the formula.

2(3,980)

this will give us 7960. the diameter is 7960 miles.
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3 years ago
Which set of transformations would prove ALMN - APQR?
Gnoma [55]

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2 I think

Step-by-step explanation:

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3 years ago
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WaSsUpDuD Answer quickly!!!! What’s 4+6+7+2+9+2+9+3??
Vinvika [58]

Answer:

42

Step-by-step explanation:

4+6 = 10

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3 years ago
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A line has a slope of –5 and a y-intercept of (0, 3). What is the equation of the line that is perpendicular to the first line a
neonofarm [45]
Slope-intercept form:
y=mx+b
m=slope
b=y-intercept

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m=-5
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y=-5x+3

A line perpendicular to the line y=mx+b will have the following slope:
m`=-1/m

Therefore: the line perpendicular to the line y=-5x+3 will have the following slope:
m´=-1/(-5)=1/5

Point-slope form of a line: we need a point (x₀,y₀) and the slope (m):
y-y₀=m(x-x₀)

We know, the slope (m=1/5) and we have a point (3,2) therefore:
y-y₀=m(x-x₀)
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y-2=(1/5)x-3/5
y=(1/5)x-3/5+2
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Answer: the line perpendicular to the first line will be: y=(1/5)x+7/5



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3 years ago
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AveGali [126]

Answer: yap

Step-by-step explanation:

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X = 71 / 27

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2 years ago
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