Answer:
c
Step-by-step explanation:
Answer:
The number is -4
Step-by-step explanation:
This is a simple equation. To set this up, you will have to multiply the number (n) by -3 and then add 8 to it before setting it all equal to 20.
-3n+8=20
-3n=12
n=-4
The circumference of a circle is always calculated by 2
R
So if R=2.5 m this circumference is 2*
*2.5 m
Which is 5
m (choice B)
Hope this helped!
Answer:
Karen
Step-by-step explanation:
8 gallons of ice cream at $5 per gallon will cost $40. 5 paperback novels at $8 per novel will also cost $40. Only Karen has a budget sufficient to cover the $40+40 = $80 total.
Answer:
394.9 cm
Step-by-step explanation:
The formula for a cone's surface area is A = π r ( r + √r^2 + h^2 ).
r = radius
h = height
The Pythagorean theorem, a^2 + b^2 = c^2, will be needed to find the height.
Plug in the values.
a(unknown)^2 + 6^2 = 15^2
A + 36 = 255
255 - 36 = 189
√189 ≈ 13.7
Surface area formula, plug in the values.
A = 3.14 × 6 ( 6 + √6^2 + 13.7^2 )
*PEMDAS*
A = 3.14 × 6 ( 6 + √36 + 187.69 )
A = 3.14 × 6 ( 6 + √223.69 )
A = 3.14 × 6 ( 6 + 14.95 )
A = 3.14 × 6 ( 20.96 )
A = 3.14 × 125.76
A = 394.8864
*round to nearest tenth*
A = 394.9 cm
Hope this helps! :)
