Answer:
Step-by-step explanation:
<u>Let the cost of a sheet be s and cost of a blanket be b</u>
<u>From the first equation we get:</u>
<u>Substitute in the second equation</u>
- s + 4*(41 - 2s) = 80
- s + 164 - 8s = 80
- 7s = 84
- s = 12
<u>Then</u>
The answer would be $159.85
Answer:
1070 cm.
Step-by-step explanation:
Its correct for Khan Academy:)
Answer:
x=20
Step-by-step explanation:
sin¢=cos90-¢
therefore; 3x-15+x+25=90
4x+10=90
4x=90-10=80
x=20
Answer:
10 degrees
Step-by-step explanation:
Bisection means dividing into two equal parts
So, if we bisect an angle measuring 20 degrees
It will divide into 2 equal parts and:
=> 20/2 = 10 degrees
Two angles of 10 degrees will be formed.
