Answer:
x = 15
Step-by-step explanation:
Given
See attachment
Required
Find x
The figure in the attachment is a quadrilateral and the angles in a quadrilateral add up to 360.
So, we have:
90 + 6x + 5+ 10x - 40 + 4x + 5 = 360
Collect like terms
6x + 10x + 4x = 360 - 90 - 5 + 40 - 5
20x = 300
Divide both sides by 20
x = 15
Hence, the value of x is 15
Answer:
C
Step-by-step explanation:
Answer:
Her mother will donate $11.20
Step-by-step explanation:
- $0.40 every 0.75 miles.
- 21 miles biked.
Step 1: Figure out how many 0.75 increments are in 21 miles.
21 ÷ 0.75 = 28
- There are 28 increments of 0.75 in 21 miles.
Step 2: Multiply 28 by $0.40
28 * $0.40 = $11.20
Answer:
Step-by-step explanation:
Given:

To find 
Using trigonometric relations for sums and differences of squares of the ratios.
We know:

Plugging in
in the above relation.

Subtracting both sides by 0.75.


Taking square root both sides.

∴
(Answer)
Correct Answer:
Letter C
Step-by-step explanation:
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