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bija089 [108]
3 years ago
10

A baby blue whale weighed 5520 pounds at birth. After two days, the baby weighed 5710. After 14 days, the baby weighed 8180 poun

ds. Is there a constant of proportionality?
Mathematics
2 answers:
Aleonysh [2.5K]3 years ago
8 0

Answer:

Constant of proportionality is 190.

Step-by-step explanation:

To find proportionality constant we will find difference of weights after 2 days and at birth.

5710-5520=190

Now we will find difference of weights after 14 days and at birth. We will divide the difference by 14.

\frac{8180-5520}{14}

\frac{2660}{14}=190

We can see that weights are increasing at a constant rate of 190 pounds per day. Therefore, our constant of proportionality is 190.

solong [7]3 years ago
7 0

Answer:

The constant of proportionality is 190.

Step-by-step explanation:

A baby blue whale weighed 5520 pounds at birth.

After two days, the baby weighed 5710.

Means the weight gain is : 5710-5520=190 pounds

After 14 days, the baby weighed 8180 pounds.

Weight gain = 8180-5520=2660 pounds

So, per day gain = \frac{2660}{14}= 190 pounds

Hence, the constant of proportionality is 190.

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Please help thanks!
babunello [35]

Answer:

10 to 15

Step-by-step explanation:

the spread is the start and stop of points data. It goes from the least point to the most point, here there is a dot (two technally) on 10 and a dot on 15 where the data stops so the data spread is 10-15

7 0
3 years ago
My cat weighs 80 N. The area of the bottom of her foot is approximately 0.0045 m(squared). if she stands on one foot and lost ha
Sonja [21]

Answer:

P = F / A = 40 N / (0.0045 m^2) = 8889 N/m^2


4 0
4 years ago
Solve by completing the square ( need it asap pls) <br><br> x2+18x+81=-4<br><br> -don’t send link-
Sholpan [36]

Answer:

x=2.17

Step-by-step explanation:

x^2 +18x+81=-4

            -81  -81

x^2 +18x= -85

    /18       /18

x^2= -4.7

\sqrt{x^2}= \sqrt{-4.7}

x= 2.17

I hope this helps :) (if it does, brainliest, please??)

6 0
3 years ago
Can someone please help me with this I will give brainliest
IrinaK [193]

Answer:

Step-by-step explanation:

2(2x +4) - 2x = x + 18

4x +8 -2x = x +18

2x -x = 18-8

X = 10

Put the value of x in both side

Left side *+*+*+*+*+

2 ( 2*10+4)-2*10

48-20 = 28

Right side +*+*+*+*+*

X + 18

10+ 18 = 28

Mark it as Brainlist. Follow me for more answer

4 0
3 years ago
The playing time X of jazz CDs has the normal distribution with mean 52 and standard deviation 7; N(52, 7).
natita [175]

Answer:

68% of jazz CDs play between 45 and 59 minutes.

Step-by-step explanation:

<u>The correct question is:</u> The playing time X of jazz CDs has the normal distribution with mean 52 and standard deviation 7; N(52, 7).

According to the 68-95-99.7 rule, what percentage of jazz CDs play between 45 and 59 minutes?

Let X = <u>playing time of jazz CDs</u>

SO, X ~ Normal(\mu=52, \sigma^{2} =7)

The z-score probability distribution for the normal distribution is given by;

                                    Z  =  \frac{X-\mu}{\sigma}  ~ N(0,1)

Now, according to the 68-95-99.7 rule, it is stated that;

  • 68% of the data values lie within one standard deviation points from the mean.
  • 95% of the data values lie within two standard deviation points from the mean.
  • 99.7% of the data values lie within three standard deviation points from the mean.

Here, we have to find the percentage of jazz CDs play between 45 and 59 minutes;

   For 45 minutes, z-score is =  \frac{45-52}{7}  = -1

   For 59 minutes, z-score is =  \frac{59-52}{7}  = 1

This means that our data values lie within 1 standard deviation points, so it is stated that 68% of jazz CDs play between 45 and 59 minutes.

6 0
3 years ago
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