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GaryK [48]
4 years ago
8

Solve the system of equations -4x+11=15 and x=2y

Mathematics
1 answer:
bixtya [17]4 years ago
8 0

Answer:

x = -, y = - 1/2

Step-by-step explanation:

- 4x + 11 = 15 \\  - 4x = 18 - 11 \\  - 4x = 4 \\ x =  \frac{4}{ - 4}  \\ \red{ \bold{ x =  - 1}} \\ x = 2y \\ 2y =  - 1 \\ \purple{ \bold{ y=  -  \frac{1}{2} }}

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Circle O has a circumference of approximately 28.3 cm. Circle O with radius r is shown. What is the approximate length of the ra
Marrrta [24]

Answer:

4.5cm

Step-by-step explanation:

Circumference = 2\pir

28.3=2\pir

28.3/2\pi=r

4.456

7 0
3 years ago
Kilani bought a cell phone service plan that provides 300 minutes of phone use each month. Use a unit multiplier to convert 300
Juli2301 [7.4K]
300 minutes converted into hours would be 5 hours
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Estimate the sum for 1,537 times 242 then find the sum
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3 years ago
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Please help with 3 questions and show all work!!!
sergeinik [125]
Question 1:
Since the triangles are congruent, we know that QS = TV
This means that 
3v + 2 = 7v - 6
Subtract both sides by 2
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Divide both sides by -4
v = 2
Plug this value back into 3v + 2 and you get 8.
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Since the triangles are congruent
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Question 2:
So we know that AC = AC because that's a shared side.
It's also given that BC = CD.
In order for two triangles to be congruent by SAS, the angle between the two sides must be congruent.
That means angle C must be congruent to angle C from the other triangle.

Question 3:
We know that AC = AC because it's a shared side.
We also know that angle A from one triangle is equal to angle C from the other.
However, for a triangle to be congruent by SAS, the congruent angle must be between two congruent sides. 
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Have an awesome day! :)
3 0
3 years ago
How do I solve x+2/3=5/6
aleksley [76]
You would subtract 2/3 from 5/6 and that should give you 1/6
x=1/6
4 0
3 years ago
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