19x60=1140
19 containers of resin with 60 ml of hardener each so the total is 1140 ml of hardener.
Answer:

Step-by-step explanation:
-2x + 2y = -4 (times 3) -6x + 6y = -12
3x + 3y = -18 (times 2) 6x + 6y = -36
.
-6x + 6y = -12
<u>6x + 6y = -36 </u>+
12y = -48

y = -4
.
Substitute the value of y to the one of equations
-2x + 2(-4) = -4
-2x - 8 = -4
-2x = -4 + 8
-2x = 4

x = -2
Part A. Express the original claim in symbolic form.
Claim: <em>The mean pulse rate (in beats per minute) of adult males is equal to 68.9 bpm.</em>
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<em>Therefore, the original claim in symbolic form is:</em>
ANSWER:

Part B. Identify the null and alternative hypotheses.


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Answer:
The answer is 91/12 in simplest form.