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Vladimir [108]
3 years ago
14

PRECALCULUS QUESTION PLEASE HELP!!!!!!

Mathematics
1 answer:
Shkiper50 [21]3 years ago
4 0
Some information is missing for #6.
#7: use sine, sin35=h/5.1, h=5.1*sin35, use a calculator, h≈2.9
#23: to find the reference angle, keep subtracting the number by 360, until the remaining difference is the smallest positive number.
1406-360-360-360=326. the reference angle is 326.
now look at the remainder, the terminal line of 326 degree is in the 4th quadrant between 270 and 360, the the reference angle is 360-326=34, the angle between the terminal line and the positive x axis. 34 is the answer.
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Find the distance between (1,8) and (-9,8) on the coordinate plane
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Answer:

10

Step-by-step explanation:

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Examine these points on line u and line v. Line u: (9, –8), (5, 4) Line v: (4, 2), (7, –7) How many points of intersection are t
Nezavi [6.7K]

There is no point of intersection between line u and line v.

Given that

These points on line u and line v.

Line u: (9, –8), (5, 4)

Line v: (4, 2), (7, –7)

We have to determine

How many points of intersection are there between line u and line v?

According to the question

To determine the point of intersection follows all the steps given below.

Line u: (9, –8), (5, 4)

The slope of the line u is,

\rm Slope = \dfrac{4-(-8)}{5-9}\\\\Slope = \dfrac{4+8}{-4}\\\\Slope = \dfrac{12}{-3}\\\\Slope = -4

And the value of c is at point (5, 4) is,

\rm y = mx+c\\\\4= -3\times 5+c\\\\c = 4+15\\\\c=19

The equation of u is y = -3x + 19.

And

Line v: (4, 2), (7, -7)

The slope of line V is,

\rm Slope = \dfrac{-7-(2)}{7-4}\\\\Slope = \dfrac{-7-2}{3}\\\\Slope = \dfrac{-9}{3}\\\\Slope = -3

And the value of c is at point (4, 2) is,

\rm y = mx+c\\\\2= -3\times 4+c\\\\c = 2+12\\\\c=14

The equation of u is y = -3x + 14.

The slopes of them are equal and their y-intercepted are not equal.

Line u is parallel to line v.

Hence, there is no point of intersection between line u and line v.

To know more about Slope click the link given below.

brainly.com/question/2514839

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2 years ago
The square of thrice a number a, take away double a second number b
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Step-by-step explanation:

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A carpet manufacturer has received a special order from a contractor for precision-cut carpet. The carpet is rectangular, and th
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The complete question in the attached figure

we know that
area of rectangle=width*length
width=4+ \sqrt{7}  yd
length=5+ \sqrt{7}  yd
A=(4+ \sqrt{7})*(5+ \sqrt{7})---\ \textgreater \  (20+4 \sqrt{7}+5 \sqrt{7} +7)
A=(27+9 \sqrt{7}) yd²



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12.92 multiplied by 2.5 long multiplication
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The answer to 12.92 * 2.5 is 32.3
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