178-x=?
This expression is the answer
Answer:
3.12833905 × 10^11 U.S. dollars
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
(11x48)+(15x50)
multiply each by the length and add
Answer:
<h2>height = 12 cm</h2>
Step-by-step explanation:
Area of a triangle is given by
![A = \frac{1}{2} bh](https://tex.z-dn.net/?f=A%20%3D%20%20%5Cfrac%7B1%7D%7B2%7D%20bh)
where
b is the base
h is the height
From the question
Area = 21 m²
The statement
The height of a triangle is 8 m more than the length of the base is written as
h = 8 + b
Make b the subject
That's
b = h - 8
Substitute the expression into the above formula and solve for the height
That's
![21 = \frac{1}{2} (h - 8)h](https://tex.z-dn.net/?f=21%20%3D%20%20%5Cfrac%7B1%7D%7B2%7D%20%28h%20-%208%29h)
Multiply through by 2
h² - 8h = 48
h² - 8h - 48 = 0
(h + 4)(h - 12) = 0
h + 4 = 0 h - 12 = 0
h = - 4 h = 12
Since the height cannot be a negative number we have the final answer as
<h3>height = 12 cm</h3>
Hope this helps you
Answer:
Step-by-step explanation:
A nationally known cosmetics company hires a market research firm to test new formulations of moisturizer. Using their extensive list of possible subjects,
the market researchers first divide the subjects into 5 age groups and then randomly select names from each age group to participate in a study. This is an
example of
systematic sampling
a simple random sample
stratified sampling
cluster sampling