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zubka84 [21]
3 years ago
13

Last one -please help! Thanks!

Mathematics
1 answer:
seraphim [82]3 years ago
8 0
X = 8/sin45° = 8/0.7071 ≈ 11.3

y = 8 * cos45° = 11.3 * 0.7071 ≈ 8

C.
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Find the mean of these numbers : 35,42,41,32,30
abruzzese [7]

Answer:

156

Step-by-step explanation:

3 0
3 years ago
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Write an equation in slope-intercept form of the line that passes through (7, 2) and (2, 12)
Anika [276]

Step-by-step explanation:

the general slope intercept form is

y = ax + b

a is the slope, b is the y-intercept (when x=0).

the slope is the ratio y/x indicating how much y changes, when x changes for a certain amount of units when going from one point to another.

going from (7, 2) to (2, 12) :

x changes by -5 (from 7 to 2), y changes by +10 (from 2 to 12).

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therefore, we have already

y = -2x + b

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4 0
3 years ago
Figure ABCD is graphed on a coordinate plane.
Phoenix [80]
1. BC is 1+3=4 (units)

2. AD is 3+5= 8 (units)

3. Draw the altitude CH from point C, as shown in the figure.

4. Then triangle CHD is a right triangle, with hypothenuse CD, and sides HD and CH.

5. CD^2=HD^2+CH^2

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mixer [17]

Answer:

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Then A = 136.5 = (1/2)(b)(b + 8), or

               (after multiplying both sides by 2)

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                which, when put into standard quadratic form, becomes:

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Thus, the discriminant is b^2 - 4ac, or 64 - 4(1)(-273) = 1156 = 17^2.

The roots are then

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x = --------------------  =  ------------ = 9/2 and -25/2

              2                          2

Only the root 9/2 makes sense here, because measurements of length are positive.

Thus, the base is 9/2 ft and the height is 9/2 + 8, or 25/8, ft.

3 0
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Answer:

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Step-by-step explanation:

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Thus, the given statement is false.

This can be explained with the help of an example:

For x = 3

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6 0
3 years ago
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