Answer:
-3, -2, 2, 3 (option 2)
Step-by-step explanation:
Integers include all positive and negative numbers, no fractions. I know this is late, sorry ^-^
Answer:
65%
Step-by-step explanation:
Knowing that 52/80 are red.
To find the percent of marbles are red you do
52/80 * 100 = 65
Hence, 65% of the marbles are red.
[RevyBreeze]
Answer:
(4+7i)-2i(2+3i) = 10+3i
Step-by-step explanation:
We need to find the expression that is equivalent to the complex number 10+3i.
Option 1. 2i(4-5i)+(1-7i)
=8i-10i²+1-7i
∵ i² = -1
=8i-10(-1)+1-7i
=8i+10+1-7i
=11+i (incorrect)
Option 2. (4+7i)-2i(2+3i)
=4+7i-4i-6i²
=4+7i-4i-6(-1)
=4+7i-4i+6
=10+3i (Correct)
Option 3. (-3+5i)-3i(4+5i)
= (-3+5i)-12i-15i²
= -3+5i-12i-15(-1)
= -3+5i-12i+15
=12-7i (incorrect)
Option 4. 3i(4+7i)+(11+2i)
= 12i+21i²+11+2i
=12i+21(-1)+11+2i
= 12i-21+11+2i
=14i-10 (incorrect)
Hence, the correct option is (B).
The answer is 20 millimeters because there is 100 millimeters and to make 10 masks 20 millimeters times 5 is 1 meters and 5 masks
3 1/2r=28
3.5r=28
cross of 3.5 and r remains
divide 28 and 3.5
and r=8
r=8