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natita [175]
3 years ago
10

Is this ordered pair a solution of the equation? -2x + y = 4 ( 2 , 7 )

Mathematics
2 answers:
Bumek [7]3 years ago
8 0
The ordered pair (2,7), is not a solution to the equation
AURORKA [14]3 years ago
7 0

Answer:

The answer is no

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Which statement describes the relationship between the length of a rain delay and the number of hours of rainfall?
Schach [20]

Answer:  c. during several storms, there were five hours of delay for every eight hours of rain

Step-by-step explanation: i just had this question

 

3 0
3 years ago
What is the value of n in the equation -1.2(2n+4)+6=-9+4(2n+1)
Shalnov [3]

Answer:

n = 6.2/-10.4=0.5962

Step-by-step explanation:

What is the value of n in the equation. we would make n the subject formula -1.2(2n+4)+6=-9+4(2n+1)

Opening the brackets,

-1.2×2n -1.2×4 + 6= -9 +4×2n + 4×1

-2.4n -4.8 +6 = -9 +8n + 4

-2.4n -4.8 +6 = -9 + 4 + 8n= -5+8n

Collecting like terms

-2.4n-8n = -5+4.8-6

-10.4n =-6.2

n = -6.2/-10.4= 0.5962

Let's check, put n= 0.5962 in the equation

-2.4n -4.8 +6 = -9 +8n + 4

Lefthand side

-2.4×0.5962-4.8+6= -0.230

Right hand side

-9+ 8× 0.5962 +4

=-9 +4.7696 +4

=0.230

Right hand side = left hand side

4 0
3 years ago
Read 2 more answers
3x + 1 = 8 I need the steps and answer.
Marat540 [252]

3x + 1 = 8

move +1 to the other side

sign changes from +1 to -1

3x+1-1= 8-1

3x= 7-1

divide by 3 for both sides to get x by itself

3x/3= 7/3

Answer:

x= 7/3 and x= 2 1/3

8 0
3 years ago
Read 2 more answers
Somebody please help​
iren [92.7K]

Answer:

Yes, No, No, No

Step-by-step explanation:

To decide whether the point lies on the circle, what you need to do it simply substituting the x and y values into the equation and check if it add up to be 25

(-5)² + 0² = 25, = RHS  [Yes]

1² + (√7)² = 8, ≠ RHS [No]

(√21)² + (-3)² = 30, ≠RHS [No]

0² + 7² = 49, ≠RHS [No]

5 0
3 years ago
Callie has 83 postcard
yuradex [85]
Any second part or anything else to look at?
3 0
3 years ago
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