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Leya [2.2K]
3 years ago
15

Use the system of two linear equations to answer the question. 2x+5y=4 y=2x+8 Which of the following statements is correct about

the solution of the system? A The x-coordinate is 2. B The x-coordinate is -3. C The y-coordinate is -3. D The y-coordinate is 5.
Mathematics
1 answer:
Blababa [14]3 years ago
5 0
2x + 5(2x+8) = 4
2x + 10x + 40 = 4
12x = -36
x= -3
So it’s B
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You buy a book of 5 basketball tickets for $62.50. What is the rate of cost per ticket?
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How do I round 47,283 to the nearest 100,000
rosijanka [135]

The answer is zero.

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The 4 is in the ten-thousands place.

Write the number 47,283 with an additional zero in the 100,000 place.

047,283

To round to the nearest 100,000, all digits to the right of the 100,000 place become zero. That means that the digits 47283 all become zero. Since 4 is less than 5, the digit to its left is not raised by 1, so the 100,000 place digit remains zero, and you end up with 000,000, which is simply 0.

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7 0
3 years ago
How did you identify the line of sight, angle of elevation and angle of depression?
Arturiano [62]

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7 0
2 years ago
Coefficient of b in expansion of (3+b)^4
Margarita [4]
Are you sure you want ONLY the coefficient of b?  If you expand this, you will have b in 3 of 4 terms.

According to Pascal's Triangle, the coefficients of (a+b)^4 are as follows:

                             1
                        1    2    1
                   1      3    3     1
              1       4     6     4     1

So (a+b)^4 would be 1a^4 + 4a^3b + 6a^2b^2 + 4ab^3 + b^4

Here, you want (3 + b)^4.  Here's what that looks like:

3^4 + 4[3^3*b] + 6[3^2*b^2] + 4[3*b^3] + 1[b^4]

Which coeff did you want?
4 0
3 years ago
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