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serious [3.7K]
3 years ago
10

Find the number of times a heart beats in 2 minutes if it beats 576 times in 8 minutes.

Mathematics
1 answer:
Gwar [14]3 years ago
6 0
You write a proportion 576/8=x/2. And solve for x.  x=144.
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valentinak56 [21]

Answer:

20

Step-by-step explanation:

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3 0
3 years ago
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Consider the roots of a cubic equation with integral coefficients: −1, −4, and 3. Which choice is a factor of the cubic equation
mash [69]

Answer:

D

Step-by-step explanation:

Lets go case by case.

Given the roots, a factor will be part of the equation if for some of the roots the factor becomes null, i.e., equal to 0.

Is there any root that makes (x+3)=0? No, as it only becomes 0 for x = - 3 and -3 is not a root. So A NO!

Is there a root that makes (x-1)=0? No, as it only becomes 0 for x=1 and 1 is not a root. So B NO!

(x-4)=0 only for x=4, and as 4 is not a root, C NO!

The last, (x-3)=0 if x=3. As 3 is one of the roots, (x-3) is a factor of our equation!

D is the only correct option!

5 0
2 years ago
What is the distributive property of 5(12x -3) -7(2x +1)
Fed [463]

Answer:

46x-22

Step-by-step explanation:

5(12x-3)-7(2x+1)

60x-15-14x-7

60x-14x-15-7

46x-15-7

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3 years ago
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Aneli [31]

Answer:

10x

Step-by-step explanation:

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2 years ago
Which equation in standard form has a graph that passes through the point (-4 , 2) and has a slope of 9/2?
malfutka [58]
Answer is <span>C. 9x-2y=-40

hope that helps

because y = 9/2x +20 then 2y = 9x + 40 so 9x -2y = -40
</span>
8 0
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