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kvv77 [185]
3 years ago
15

Pls help me on this!

Mathematics
1 answer:
ArbitrLikvidat [17]3 years ago
4 0
It’s b :) haha i got it right
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What is the x-value in the solution to this system of linear equations?
ASHA 777 [7]

Answer:

  4

Step-by-step explanation:

The y-variable can be eliminated by adding 3 times the first equation to the second:

  3(2x -y) +(x +3y) = 3(11) +(-5)

  7x = 28 . . . .  simplify

  x = 4 . . . . . . . divide by 7

_____

Using Cramer's Rule, you can also find the x-value. The math is not so different.

  x = ((-1)(-5) -(3)(11))/(-1(1) -3(2)) = -28/-7 = 4

8 0
3 years ago
Round 12.335 to the place named.<br> hundreds <br> The rounded number is
mafiozo [28]

Answer: 12.3

Step-by-step explanation: It's 12.3 because the other 3 is in the hundredths place and the rule says 5 or more round,4 or less stays the same

7 0
3 years ago
Find all zeros of the polynomial function. g(x) = x^4 + 2x^3 + 7x^2 + 2x - 8
tester [92]

Answer:

x≈−

1.32047132, 0.82496696

Step-by-step explanation:

6 0
3 years ago
Write the linear equation that gives the rule for this table.
MAVERICK [17]

Answer:

The linear equation that gives the rule for this table will be:

  • y=x+25

Step-by-step explanation:

Taking two points from the table

  • (2, 27)
  • (3, 28)

Finding the slope between two points

\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}

\left(x_1,\:y_1\right)=\left(2,\:27\right),\:\left(x_2,\:y_2\right)=\left(3,\:28\right)

m=\frac{28-27}{3-2}

m=1

We know the slope-intercept form of linear equation is

y=mx+b

where m is the slope and b is the y-intercept

substituting the point (2, 27) and m=1 in the slope-intercept form to determine the y-intercept 'b'

y=mx+b

27 = 1(2)+b

27-2 = b

b = 25

Now, substituting m=1 and b=25 in the slope-intercept form to determine the linear equation

y=mx+b

y=1(x)+25

y=x+25

Thus, the linear equation that gives the rule for this table will be:

  • y=x+25
4 0
3 years ago
Find the area of a circle with a diameter of 7mm .​
4vir4ik [10]

Answer: 38.48451

Step-by-step explanation:

7 0
2 years ago
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