C = 2pi*r
Plug in the circumference
6.28 = 2*pi*r
3.14 = pi *r
plug in pi
3.14 = 3.14 * r
r = 1
Answer:
The distance in 1 hr is 72.3 km/hr and the distance in 5 hrs is 361.5 km
Answer:
Pamela worked 9 hours if she prepared 72 kilograms of dough.
Step-by-step explanation:
First we divide 72 by 16.
72 ÷ 16 = 4.5
Next we multiply 4.5 by 2.
4.5 * 2 = 9
So, the answer is 9 hours.
Hope this helps! :)
Answer:
At most 38 text messages.
Step-by-step explanation:
Let x represent number of text message you send or receive.
We have been given that the cell phone plan charges $.13 for each text message you send or receive. So amount charged for sending or receiving x text messages would be
.
We are also told that your cell phone plan cost $39.99 per month, so total cost of monthly bill would be
.
Since you can spend at most $45, so total cost of x messages should be less than or equal to 45 as:





Therefore, you can send or receive at most 38 text messages.
Answer:
( - 7 + √17 ) / 2, ( - 7 - √17 ) / 2
Step-by-step explanation:
x^2 = - 7x - 8
x^2 + 7x + 8 = 0
Here,
a = 1
b = 7
c = 8
D = b^2 - 4ac
= 7^2 - 4 ( 1 ) ( 8 )
= 49 - 32
D = 17
x = - b ± √D / 2a
= - 7 ± √17 / 2 ( 1 )
x = ( - 7 + √17 ) / 2, ( - 7 - √17 ) / 2