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nydimaria [60]
3 years ago
6

-3x + 7y = -1 - 2x + 5y=0

Mathematics
1 answer:
Talja [164]3 years ago
6 0
(X,Y) = (9/13 , 2/13)
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3. What is the perimeter of a regular hexagon with sides of 20 cm?​
morpeh [17]

I hope it help...................

4 0
2 years ago
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A new drug on the market is known to cure 24% of patients with colon cancer. If a group of 15 patients is randomly selected, wha
Zigmanuir [339]

Answer:

P = ₁₅C₀ (0.76)¹⁵ + ₁₅C₁ (0.24)¹ (0.76)¹⁴ + ₁₅C₂ (0.24)² (0.76)¹³

Step-by-step explanation:

Binomial probability:

P = nCr pʳ qⁿ⁻ʳ

where n is the number of trials,

r is the number of successes,

p is the probability of success,

and q is the probability of failure (1−p).

Here, n = 15, p = 0.24, and q = 0.76.

We want to find the probability when r is at most 2, which means r = 0, r = 1, and r = 2.

P = ₁₅C₀ (0.24)⁰ (0.76)¹⁵⁻⁰ + ₁₅C₁ (0.24)¹ (0.76)¹⁵⁻¹ + ₁₅C₂ (0.24)² (0.76)¹⁵⁻²

P = ₁₅C₀ (0.76)¹⁵ + ₁₅C₁ (0.24)¹ (0.76)¹⁴ + ₁₅C₂ (0.24)² (0.76)¹³

4 0
3 years ago
The total number of hours tea that Trent has practiced his guitar after D days is modeled by the equation shown t=3d
fredd [130]

Answer:

The complete table is

d               t

1               3

3              9

5              15

Step-by-step explanation:

Here is the correct and complete question:

The total number of hours, t, that Trent has practiced his guitar after d days is modeled by the equation t = 3d.

Complete the table below.

d               t

1

3

               15

Step-by-step explanation:

For the first space, we are to determine the value of t when d is 1

From the given equation, t = 3d, put d = 1 and determine t

t = 3d

∴ t = 3(1) = 3×1

t = 3

For the second space , we are to determine the value of t when d is 3

Put d = 3 in the equation to determine t

t = 3d

∴ t= 3(3) = 3×3

t = 9

For the third space, we are to determine the value of d when t is 15.

Put t = 15 in the equation and then find d

t = 3d

∴ 15 = 3d

Divide both sides by 3

15/3 = 3d/3

5 = d

∴ d = 5  

4 0
3 years ago
A point on the line y=3x-4 has a y-coordinate of 50. What is the x-coordinate of this point?
EastWind [94]

Answer:

x=18

Step-by-step explanation:

y=3x-4

3x-4=y

3x-4=50

3x=50+4

3x=54

x=54÷3

x=18

5 0
3 years ago
The total cost of Anja’s trip to the dentist was $628.35. She paid a flat fee of $89.95 which included the checkup and cleaning
Nuetrik [128]
I may be wrong but I am sure this is the equation...
$628.35= $89.95+4x
4 0
4 years ago
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