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Genrish500 [490]
3 years ago
12

Is (2,-5) is an answer to 4+3x=-2y

Mathematics
1 answer:
bearhunter [10]3 years ago
4 0
Yes. For example x=-1 and y=-1/2
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I need help with the white sheet and the blue sheet
Mrac [35]
Number 10 is d and i’ll try 9 give me a minute lol
4 0
3 years ago
Read 2 more answers
Convert 8/20 to a percent​
nikitadnepr [17]

Answer:

40%

Step-by-step explanation:

8/20

Divide it to get a decimal.

8/20 = 2/5 = 0.4

Change the decimal into a percent by moving the decimal point 2 places to the right.

0.4 = 40%

7 0
3 years ago
A specific aircraft can ascend 1,635 meters in 15 seconds.<br> What is the rate of ascent?
Snezhnost [94]

Answer:

109m/s

Step-by-step explanation:

You idiot sandwich

8 0
2 years ago
According to the World Health Organization (WHO) Child Growth Standards, the head circumference for boys at birth is normally di
Elena L [17]

Answer:

z = \frac{X -\mu}{\sigma}

This z score tell to us how many deviations we are below or above the mean for a given normal distribution.

For the case of Eddie we got:

z= \frac{33.2-34.5}{1.3}= -1

And for the case of Sue we got:

z = \frac{32.7-33.9}{1.2}= -1

So then for both cases we see that Eddie and Sue are 1 deviation below the true mean for each gender so then the best conclusion for this case would be:

C.They are the same size relative to other children of the same sex.

Step-by-step explanation:

We can define the random variable X as the head circumference for boys at birth and we know that the distribution for X is given by:

X\sim N(\mu = 34.5, \sigma=1.3)

Similarly we can define the random variable Y as the head circumference for boys at birth and we know that the distribution for Y is given by:

Y\sim N(\mu = 33.9, \sigma=1.2)

And we know that Eddie was born with 33.2 cm and Sue with 32.7 cm for the head circumference . Since we are interested to determine which child's head circumference is smaller relative to other children of the same sex, we can use the z score formula given by this formula:

z = \frac{X -\mu}{\sigma}

This z score tell to us how many deviations we are below or above the mean for a given normal distribution.

For the case of Eddie we got:

z= \frac{33.2-34.5}{1.3}= -1

And for the case of Sue we got:

z = \frac{32.7-33.9}{1.2}= -1

So then for both cases we see that Eddie and Sue are 1 deviation below the true mean for each gender so then the best conclusion for this case would be:

C.They are the same size relative to other children of the same sex.

5 0
3 years ago
How do the lateral and total surface area of a cylinder differ ?
vichka [17]
The lateral surface area of a cylinder is just the long side connecting the bases, whereas the total surface area includes both the lateral surface area and area of the two circular bases.

SA_l_a_t=2 \pi rh (Imagine a rectangle with the circumfrence of the base as one side and the height as the other being folded around)

SA = 2 \pi rh + 2 \pi r^2 (Plus the area of two circles)

The literal difference between surface areas would be the two bases 2πr² if you need that.
8 0
3 years ago
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