What is negative 3 over 4 multiple by negative 2 over 5
2 answers:
Answer: 3 / 10
Step-by-step explanation:
<u>Given word expression</u>
negative 3 over 4 multiple by negative 2 over 5
<u>Convert to numerical expression</u>
(-3/4) × (-2/5)
<u>Multiply numerator by numerator and denominator by denominator</u>
<u>(REMEMBER to change the [+] sign when two [-] signs are multiplied together)</u>
(3 × 2) / (4 × 5)
6 / 20
<u>Divide 2 on both numerator and denominator</u>
(6 ÷ 2) / (20 ÷ 2)
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The rate at which his pulse is increasing after 3 minutes is 9.5 beats per minute
<h3>How to determine the beat rate after 3 minutes?</h3>The given graph shows the curve and the tangent.
From tangent line, we have the following points:
(x,y) = (3,119) and (1,100)
The beat rate (m) at this point is:
So, we have:
Evaluate the differences
Evaluate the quotient
m = 9.5
Hence, the rate at which Sam's pulse is increasing after 3 minutes is 9.5 beats per minute
Read more about rates of tangent lines at:
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