Answer:
174 I'm pretty sure
Step-by-step explanation:
multiply 9 x10 = 90
subtract 90 - 3=87
multiply 87×2
A. Which reduction should she use so the picture fills as much of the frame as possible, without being too large?
Find the scale factor to get rom 7 1/3 inches to 5 1/3 inches:
5 1/3 / 7 1/3 = 0.7272
Now rewrite the fraction as decimals:
2/3 = 0.667
¾ = 0.75
5/9 = 0.555
The closest scale that would still fit the frame would be 2/3 because it is under 0.727.
B. How much extra space is there in the frame when she uses the reduction from Part A?
Multiply the original size by the scale factor to use:
7 1/3 x 2/3 = 4 8/9
Now subtract the scaled size from the original size:
7 1/3 – 4 8/9 = 2 4/9 inches extra
C. If she had a machine that could reduce by any amount, so that she could make the reduced picture fit in the frame exactly, what fraction would the reduction be?
Convert the scale from part A to a fraction:
0.72 = 72/99 which reduces to 8/11
Answer:
d
Step-by-step explanation:
sin 55° = cos 25°
because they complete each other to 90°
Answer: Volume=184.8 cm³
Step-by-step explanation: Volume of pyramid = 
where B=area of base=44 cm²
and h=height of pyramid=12.6 cm
volume=44×12.6/3
=184.8 cm³
