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nasty-shy [4]
3 years ago
12

I don't know how to do this​

Mathematics
1 answer:
Gre4nikov [31]3 years ago
5 0

Answer:

x = -11/5 and y = 24/5

Step-by-step explanation:

Use elimination.

First, we need to multiply so that at least one variable can cancel out.

We can multiply the top equation by 2.

So we get

4x + 6y = 20

Then, we can use elimination.

The x's cancel out.

So we get 5y = 24

Or y = 24/5

Then, we can plug in this y value back into the first equation to find x.

2x + 3(24/5) = 10

2x + 72/5 = 50/5

2x = -22/5

x = -11/5

So x = -11/5 and y = 24/5

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The radius of a circular disk is given as 24 cm with a maximum error in measurement of 0.2 cm. (a) Use differentials to estimate
Vitek1552 [10]

Answer:

30.17 cm

Step-by-step explanation:

area of  a circular disc=π*r^2

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maximum error= derivative * error in radius

i.e . 2*π*r*0.2

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3 years ago
Find the sample standard deviation with the data 0.62, 1.05, 0.58, 1.17, 1.04, 1.37, 1.32, 0.67, 1.25 1.38, 0.86
sukhopar [10]

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4 0
3 years ago
Why is
zloy xaker [14]

Answer:

Only natural numbers (i.e., non-negative integers) can be the exponents of variables in a polynomial.

Step-by-step explanation:

The exponent of variables in a polynomial should be natural numbers (0, 1, 2, 3, \dots.)

  • \sqrt{2\, x} is equal to \sqrt{2}\, x^{1/2}. In this expression, x is the variable. Its exponent is 1/2, which isn't a natural number.
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3 years ago
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3 years ago
Please help
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Answer:

The probability that a student taking only math will get picked is approximately 29%

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