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MrRissso [65]
2 years ago
5

Andre rode his bike at a constant speed. He rode 8 miles in 1 hour. Which of these equations represents the total distance of mi

les that he
rides in a given amount of time (in hours)?
d = 1/8t
d-81
d-t+8
dt-8
HURRY WILL GIVE BRAINLIEST
Mathematics
2 answers:
kherson [118]2 years ago
4 0

Answer:I think A. D=1/8t

Dimas [21]2 years ago
4 0
A is the correct answer!
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3 years ago
Please help!!
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The two linear equations in two variable is:

12 x + 3 y = 40

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(a) For a system of equations in two Variable

a x + by = c

p x + q y = r

It will have unique solution , when

\frac{a}{p}\neq \frac{b}{q}\neq\frac{c}{r}

As, you can see  that in the two equation Provided above

\frac{12}{7}\neq \frac{3}{-4}\neq \frac{40}{38}

So, we can say the system of equation given here has unique solution.

(b). If point (2.5, -3.4) satisfies both the equations, then it will be solution of the system of equation, otherwise not.

1. 12 x+3 y=40

2. 7 x-4 y=38

Substituting , x= 2.5 , and y= -3.4 in equation (1) and (2),

L.H.S of Equation (1)= 1 2 × 2.5 + 3 × (-3.4)

                             = 30 -10.20

                               = 19.80≠ R.H.S that is 40.

Similarly, L H S of equation (2)= 7 × (2.5) - 4 × (-3.4)

                                                  = 17.5 +13.6

                                                  = 31.1≠R HS that is 38

So, you can Write with 100 % confidence that point (2.5, -3.4) is not a solution of  this system of the equation.


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