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klemol [59]
3 years ago
14

I WILL MARK BRAINLIEST i need helpp

Mathematics
1 answer:
JulsSmile [24]3 years ago
5 0

Answer:

I think its C) yellow only.

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Use Cramers Rule to solve the system <br> 2x - 3y = 11<br> -6x + 8y = 34
Nastasia [14]

Step-by-step explanation:

given :

2x - 3y = 11

-6x + 8y = 34

find : the solutions of the system by using Cramers Rule.

solutions:

in the matrix 2x2 form =>

[ 2 -3] [x] [11]

=

[-6 8] [ y] [34]

D =

| 2 -3 |

|-6 8 |

= 8×2 - (-3) (-6)

= 16-18 = -2

Dx = | 11 -3 |

| 34 8 |

= 11×8 - (-3) (34)

= 88 + 102

= 190

Dy = | 2 11 |

|-6 34 |

= 2×34 - (-6) (11)

= 68 + 66

= 134

x = Dx/D = 190/-2 = -95

y = Dy/D = 134/-2 = -67

the solutions = {-95, -67}

8 0
3 years ago
Read 2 more answers
Solve the inequality 5u≤8u−21 and write the solution in interval notation
PIT_PIT [208]

Answer:

Step-by-step explanation:

5u\leq 8u-21

Subtract 8u from both sides

-3u\leq -21

Divide by -3 on both sides

u\geq 7

Interval notation: [greater/less than or equal to], (greater or equal to)

[7,∞)

3 0
3 years ago
Mark has a coupon for 10% off his entire purchase. If Mark buys $41.00 worth of merchandise, how much will Mark spend? *
kifflom [539]

Answer:

36.90

Step-by-step explanation:

41 X 0.10 = 4.10

41 - 4.10 = 36.90

H weill spend 36.90 dollars.

Please mark brainliest!

Have a great day!

4 0
2 years ago
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The function f(x) = x2 + 10x – 3 written in vertex form is f(x) = (x + 5)2 – 28. What are the coordinates of the vertex?
Alexxandr [17]
Vertex form uses the following formula:

y = a(x-h)^2 + k

Identify the values of h and k in your function:

(x+5)^2 - 28
h = -5, k = -28

The vertex is found with the following point:

(h,k)
\text{Vertex: (-5, -28)}

The vertex will be found at (-5, -28).
4 0
3 years ago
Which of the following is a logarithmic function?
Art [367]

Answer:

c

Step-by-step explanation:

6 0
3 years ago
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