Answer:
Mean:7 Median:6
Step-by-step explanation:
Okay so the Median is 6, and the mean is correct.
Answer:
12 books
Step-by-step explanation:
30 multiply by 2/5=12 books that were sold to co-workers.
3/5 which is the remainder multiplied by 1/2 =3/10
3/10 multiply by 30 =6 books sold to her neighbours
now that 30 is the original subtract12 +6
Answer:
32/40, 4/5
Step-by-step explanation:
All these ratios are follow the ratio 4:5 meaning they are equivalent to "64:80".
8:12=0.666667
16"24=0.666667
120:160=0.75
<h3>
<u>Answer</u><u>:</u><u>-</u></h3>
192 cm²
<h3>
<u>Step</u><u> </u><u>by</u><u> step</u><u> explanation</u><u> </u><u>:</u><u>-</u></h3>
Let us take the height be x , then its side = x + 4. Now half of base will be 12 cm .
<u>According</u><u> to Pythagoras Theorem :- </u>
=> base² + perpendicular ² = hypontenuse ²
=> 12² + x² = (x+4)²
=> 144 + x² = x² + 16 + 8x
=> 8x = 144-16
=> 8x = 128
=> x = 128/8
=> x = 16 cm .
Hence the height of ∆ is 16 cm .So the area will be half the product of base and altitude.
= 1/2 * 16 cm * 24cm .
= 192 cm²
<h3>
<u>★</u><u> </u><u>Hence</u><u> </u><u>the</u><u> </u><u>area</u><u> </u><u>of</u><u> </u><u>the </u><u>tria</u><u>ngle</u><u> is</u><u> </u><u>1</u><u>9</u><u>2</u><u> </u><u>cm²</u><u> </u><u>.</u></h3>
