Step-by-step explanation:
6. 4x−1−5x+17
=4x+−1+−5x+17
Combine Like Terms:
=4x+−1+−5x+17
=(4x+−5x)+(−1+17)
=−x+16
Answer:
=−x+16
7. (−x−3)−(5x−4)
Distribute the Negative Sign:
=−x−3+−1(5x−4)
=−x+−3+−1(5x)+(−1)(−4)
=−x+−3+−5x+4
Combine Like Terms:
=−x+−3+−5x+4
=(−x+−5x)+(−3+4)
=−6x+1
Answer:
=−6x+1
8. −9x+2−(−8x−2)
Distribute the Negative Sign:
=−9x+2+−1(−8x−2)
=−9x+2+−1(−8x)+(−1)(−2)
=−9x+2+8x+2
Combine Like Terms:
=−9x+2+8x+2
=(−9x+8x)+(2+2)
=−x+4
Answer:
=−x+4
Area of circle is 314 inches^2
Circumference of circle is 62.8 inches
Step-by-step explanation:
We need to find area and circumference of the circle whose diameter is 20 inches.
Area of circle
The formula used to find area of circle is:
value of π = 3.14
we know radius = diameter/2
So, radius = 20/2 = 2
Putting value of π and radius we get Area:
So, Area of circle is 314 inches^2
Circumference of Circle
The formula used to find circumference of circle is:
value of π = 3.14
diameter= 20
Putting value of π and diameter we get Circumference:
So, circumference of circle is 62.8 inches
Keywords: Area and Circumference of Circle
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Answer:
900 batteries
Step-by-step explanation:
First we must find how many batteries does 1 calculator need
we can do this by dividing 160 by 40
which will give us 4 batteries per calculator
then we multiply the amount of calculators we have with 4
225×4 = 900 so we need 900 batteries
Answer:
so sorry
Step-by-step explanation:
wish I could help but I don't know how to do it