Answer:
The correct answers is -8.3232
Step-by-step explanation:
Replace x with the x values of the choices and see if it solves to equal the y value:
Y=-7x + 2
A) (1,2)
Y = -7(1) + 2 = -7 + 2 = -5 not 2
A is wrong
B (8,-54)
Y = -7(8) + 2 = -56+ 2 = -54
This works out.
The answer is B
45-5 =40
40/2 = 20
20+5 = 25
the 2 numbers are 20 and 25
Answer:
0.3453 grams
Step-by-step explanation:
to find the amount of days in 6 weeks, you multiply 6 and 7 which will get you 42. Then 42/4 is 10.5. This means it will go through 10 full half-lifes. you divide 500 by 2 10 times and 0.3453 g is the closest answer.
V=πr^2h
V= volume, r=radius, and h=height
Plug in what you know.
1,728= 3.14*r^2*22
Combine like terms.
1,728= 69.08*r^2
Divide both sides by 69.08.
25. 0144759.... Round down to 25.
25=r^2
The square root of 25.
r=5
The radius is about 5 centimeters.
I hope this helps!
~kaikers
