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loris [4]
4 years ago
7

Help plz dont know the answer

Mathematics
1 answer:
stealth61 [152]4 years ago
6 0

Answer is B

How I got is because I had to first figure out what 40 seconds worth of heartbeats are equal to. 80 - 48 is 32 divided by 2 is 16. Next, I added 48 and 16 which got me 64. All I had to do next was to add 80 and 16 because the rate of heartbeats per 10 seconds is 16. 80+16=96 and thats how I figured that the answer is B

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HELPPPPPPPPP i have the most trouble with math what’s the answer??
densk [106]

For this case we must simplify the following expression:

\frac {\sqrt {120}} {\sqrt {30}}

We know that:120 = 30 * 4 = 30 * 2 ^ 2

By definition of power properties we have to:

\sqrt [n] {a ^ m} = a ^ {\frac {m} {n}}

Rewriting the given expression we have:

\frac {\sqrt {2 ^ 2 * 30}} {\sqrt {30}} =\\\frac {2 \sqrt {30}} {\sqrt {30}} = 2

Answer:

Option A

5 0
3 years ago
Solve 2(y – 3) = 1.2 – y.
Ne4ueva [31]
First write down your equation. 2(y-3)=1.2-y. the distribute your 2. 2 times y is 2y and 2 times -3 is -6. now you have 2y-6=1.2-y. bring your y to the other side of the equation with the opposite sign and do the same with your 6. you have 2y+y=1.2+6. combine the like terms and constants. now you have 3y=7.2. divide bother sides of the equal by 3 to get y alone. 3y/3= 7.2/3. your answer is y=2.4.
6 0
3 years ago
Read 2 more answers
Solve -9 2/7 - (10 3/7)
Setler [38]

Answer:

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1 2-3/7

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Alecsey [184]

Answer:

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300 miles per gallon

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