Answer:
I think it is AC
Step-by-step explanation:
She can use 68 + 20 = 88 to help by noticing that the 20 is ahead of 19 by 1. She can easily mentally turn the 20 into a 19 and realized that the 88 would become 87.
Answer:
There are two options: b)
, c)
.
Step-by-step explanation:
By Trigonometry, we know that function tangent is equal to the following identity in terms of functions sine and cosine:
(1)
If we know that
and
, then
. Hence, we have two possibilities: b)
, c)
.
Using proportions, considering original measures of 10 feet, we have that:
- The horizontal measurement of the second garden is of 7.5 feet.
- The vertical measurement of the second garden is of 15 feet.
<h3>What is a proportion?</h3>
A proportion is a fraction of total amount.
In this problem, the total amount is the original measures of 10 feet.
The horizontal measurement has a scale factor of 75%, hence:

The vertical measurement has a scale factor of 150%, hence:

You can learn more about proportions at brainly.com/question/24372153