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ryzh [129]
3 years ago
6

Look at pic!! #9 pls. Thank youuuuu. 20 points

Mathematics
1 answer:
Karolina [17]3 years ago
4 0
35n=280
n=8 8 dimes and 8 quarters
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A 12 foot ladder leans against a building. The angle of elevation from the ground to the foot of the ladder is 46°. Find, to the
elena55 [62]

Answer:

8.3 ft

Step-by-step explanation:

Hypotenuse is the longest side

Opposite is the side opposite the angle

Adjacent is the remaining side

Draw the triangle out, and you'll find that the hypotenuse (length of ladder) is 12ft, and that you are looking for the adjacent side (length of the foot of the ladder to the building). Rule out the opposite side (side of building) as it is not needed. The appropriate trigonometric formula is then the cos(angle) = \frac{adjacent}{hypotenuse}, rearranged to find the adjacent side is adjacent = cos(angle)*hypotenuse  

substitute the values in and you get cos(46) x 12 = 8.335900446

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3 years ago
What equation should i use -7x+8y=13 2y=12
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3 years ago
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Molodets [167]
11:19. you would put 11 first to represent the girl and 19 by adding 11 and 8 to represent the total number of students
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3 years ago
for the graph y= 12 find the slope of a line that is perpendicular to it and the slope of a line parallel to it. Explain your an
ra1l [238]

y = 12 is a line in which every point has a y-coordinate of 12 no matter what the x-coordinate is. That means that y = 12 is a horizontal line. The equation of line y = 12 can be written as y = 0x + 12 clearly showing m = 0 (slope is zero) and the y-intercept is 12. A line parallel to line y = 12 has the same slope, so its slope is also zero.

A line perpendicular to y = 12 is a vertical line. For a vertical line, the slope is undefined because it involves division by zero which is undefined in math.

4 0
3 years ago
Chad has a rope that is 20 yards long. How many pieces of rope measuring 4/7 of a yard can he divide his rope into?
Sunny_sXe [5.5K]

Answer:

35\ pieces

Step-by-step explanation:

we know that

To find the number of pieces of rope 4/7 of a yard, divide the total length of the rope by 4/7

we have that

The total length of the rope is 20 yards

so

\frac{20}{(4/7)}=\frac{20*7}{4}=35\ pieces

4 0
3 years ago
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