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3 years ago

Mary’s heart beats 68 times a minutes. At this rate, how many times does her heart beat in 45 minutes

Mathematics

1 answer:

vampirchik [111]3 years ago

7 0

Answer:

3060

Step-by-step explanation:

If the ratio is 68 beats: every minute

68:1

Then in 45 minutes you'd have to multiply 68 beats for 45 minutes

68 x 45= 3060

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What is -3(-6+8)^3-2(1-3)^3

marin [14]

Assignment: $\bold{Solve \ Equation: \ -3\left(-6+8\right)^3-2\left(1-3\right)^3}$

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Answer: $\boxed{\bold{-8}}$

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Explanation: $\downarrow\downarrow\downarrow$

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[ Step One ] Follow PEMDAS Order Of Operations; Calculate Within Parenthesis

Note: $\bold{PEMDAS: \ Parenthesis, \ Exponents, \ Multiply, \ Divide, \ Add, \ Subtract}$

$\bold{-6+8: \ 2}$

[ Step Two ] Rewrite Equation

$\bold{-3\cdot \:2^3-2\left(1-3\right)^3}$

[ Step Three ] Calculate Within Parenthesis

$\bold{1-3: \ -2}$

[ Step Four ] Rewrite Equation

$\bold{-3\cdot \:2^3-2\left(-2\right)^3}$

[ Step Five ] Calculate Exponents

$\bold{2^3: \ 8}$

[ Step Six ] Rewrite Equation

$\bold{-3\cdot \:8-2\left(-8\right)}$

[ Step Seven ] Multiply

$\bold{2\left(-8\right): \ -16}$

[ Step Eight ] Rewrite Equation

$\bold{-24-\left(-16\right)}$

[ Step Nine ] Subtract

$\bold{-24-\left(-16\right): \ -8}$

[ Step Ten ] Rewrite Equation

$\bold{-8}$

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$\bold{\rightarrow Mordancy \leftarrow}$

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3 years ago

Huan's wage is £10.40 per hour l. he receives a 10% pay rise

r-ruslan [8.4K]

Answer:

Step-by-step explanation:

10% of 10.40=1.04

10.40+1.04=11.44

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2 years ago

What is the are a square with a side length of 3x + 4.

geniusboy [140]

(3x + 14) (3x + 14) = 9x^2 + 24x + 16

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3 years ago

An interval has the notation (-6,-2). find the midpoint

notka56 [123]

<span>(6+8)/2 = 14/2 = 7 hope this helps

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3 years ago

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Which expression is equivalent to 9–2?

Dennis_Churaev [7]

6+1
8-1
10-3
14-7
Theses are also equal to ur answer

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2 years ago

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