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Olenka [21]
3 years ago
10

If you were to solve the following systems of equations by using a matrix, which of the following would be your coefficient matr

ix? 5x-y=18 3x+8y=15 (picture as everything in it for better understanding)
A.[5 3,-1 8]
B.[5 -1,3 8]
C.[5 18,3 15]
D.[5 -1 18,3 8 15]

Mathematics
2 answers:
sesenic [268]3 years ago
6 0

the answer on apex is A


DedPeter [7]3 years ago
4 0
C is the only answer




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Which number is a reasonable estimate for 553 +363?<br> A 1,300<br> B 1,000<br> 600<br> D 200
Flura [38]

its b because you can round 363 to 400 and 553 to 600 400 + 600 = 1000

7 0
4 years ago
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Pls help I need it pls
umka21 [38]

Answer:

Formula for area of triangle:

<em>A = bh x 1/2</em>

1) height is 8, and base is 8, so:

8(8) x 1/2 = 32 yd

2) height is 5, base is 6, so:

6(5) x 1/2 = 15 ft

3) height is 8, base is 10, so:
10(8) x 1/2 = 40 in

5 0
3 years ago
Able to help Q39? Thank you
Alex
A)

y  varies inversely as (x-1).

Implies    y  α  1/(x -1)

                 y =  k/(x-1).        Where k is constant of proportionality.

                 y*(x - 1) = k

when y = 12, x = 1/2

12*(1/2 - 1) = k

12*(0.5 - 1) = k

k = 12*(-0.5) = -6.

k = -6.

Equation connecting x and y

  y*(x - 1) = k,          recall k = -6

  y*(x - 1) = -6

b)

when x = a.

y*(x - 1) = -6

y*(a - 1) = -6

y = -6 / (a -1)

when x = 2a.

y*(2a - 1) = -6

y = -6 / (2a -1)

Difference in y is 1.8

-6 / (2a -1)  -  -6/(a - 1) = 1.8

-6 / (2a -1)  + 6/(a - 1) = 1.8

6 / (a -1) - 6 /(2a -1) = 1.8

6( 1/(a-1) -  1/(2a - 1)) = 1.8

1/(a-1) -  1/(2a - 1) = 1.8/6

1/(a-1) -  1/(2a - 1) = 0.3

((2a - 1) - (a - 1)) / ((a-1)(2a -1)) = 0.3

(2a - 1 -a + 1) /((a-1)(2a -1)) = 0.3

a / (2a² - 3a + 1) = 0.3

a/0.3 = 2a² - 3a + 1

10a/3 = 2a² - 3a + 1

2a² - 3a + 1 = 10a/3

2a² - 3a -10a/3 + 1 = 0

2a² - 19a/3 + 1 = 0

6a² - 19a + 3 = 0

This is a quadratic expression which can be factored.

6a² - 18a - a + 3 = 0

6a(a - 3) - 1(a - 3) = 0

(6a - 1)(a - 3) = 0         

6a - 1 = 0      a = 1/6

a - 3 = 0   a = 3.

a = 3  or  1/6

Since a is positive integer, a = 3 only.
4 0
3 years ago
HURRY PLS I NEED IT<br> What is the purpose of apportionment? (its ideal, value, or vision)
EleoNora [17]

Answer:

An apportionment is the allocation of a loss between all of the insurance companies that insure a piece of property. This allocation is used to determine a percentage of liability for each insurer.

I'm new here! Sorry if this didn't help

4 0
4 years ago
What is 2187632+27893169 also, 23626237x783
gogolik [260]

30,080,801

18,499,343,571

Step-by-step explanation:

8 0
3 years ago
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