Answer:
275 units^2
Step-by-step explanation:
The formula for the area of trapezoid is:
Area=((b1+b2)/2)*h
In the given trapezoid, as it can be seen
b1=16
h=11
The lower base will be calculated using all the lengths in the lower base
b2=9+16+9
b=34
Putting the values in formula
Area=((16+34)/2)*11
Area=(50/2)*11
Area=25*11
=275 units^2
Answer:
(-1, -2.5)
Step-by-step explanation:
the midpoint of a segment is 
, given points (x1, y1) and (x2, y2)
a = amount (in oz) of solution A
b = amount of solution B
The scientist wants a mixture of 110 oz, so
a + b = 110
Solution A consists of 65% salt, so each ounce of solution A contributes 0.65 oz of salt; similarly, each ounce of B contributes 0.9 oz. The mixture is supposed to consist of 75% salt, which amounts to 0.75 * (110 oz) = 82.5 oz of salt. So
0.65 a + 0.9 b = 82.5
Solve for a and b:
b = 110 - a
0.65 a + 0.9 (110 - a) = 82.5
0.65 a + 99 - 0.9 a = 82.5
0.25 a = 16.5
a = 66 ==> b = 44
Answer: <em>D. 120 students</em>
Step-by-step explanation:
<em>This is an easy solution</em>
<em>Take 300 and divide it by 5</em>
<em>300/5</em>
<em>This will result in 40</em>
<em>Now Multiply 40 by 3</em>
<em>Like so: 40x3</em>
<em>This will result in </em><em>120</em>
