A complete load of concrete = 8 parts gravel + 7 parts water + 5 parts cement.
Total number of parts in every load = 8 + 7 + 5 = 20 parts
If total load = 220 kg, then 20 parts = 220 kg
Divide each side by 20 : 1 part = 11 kg
gravel = 8 parts = 8 x 11 kg = <em>88 kg</em>
water = 7 parts = 7 x 11 kg = <em>77 kg</em>
cement = 5 parts = 5 x 11 kg = <em>55 kg</em>
<u>Check:</u> 88 + 77 + 55 = 220 yay !
Answer:
which one is m?
Step-by-step explanation:
The answer:
<span>according the statement
"Assume p and ~q are both true. ~q → r, and r → ~p. Therefore, ~p and p cannot be true, so p and ~q cannot be true. Therefore, p → q is true."
</span>the answerer has just used theorem between combination of ¬p, p, ¬q and q.
that is called theorem of mathematics logic,
so the proof is D. proof by theorem
Card 1
$0.50 + $0.02x = y
Card 2
$0.25 + $0.03x = y
Card 1: Charges $0.50 and adds 2 more cents for each minute
Card 2: Charges $0.25 and adds 3 more cents for each minute
$0.50 + $0.02(25) = $1.00
$0.25 + $0.03(25) = $1.00
At 25 minutes the cards charge the same amount of $1.00 .
Answer:
negative correlation
Step-by-step explanation:
the dots on the graph decrease as they move over to the right side
