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Morgarella [4.7K]

3 years ago

12

A long-distance runner started on a course at an average of 9 mph half an hour later a second runner begin the same course of an

average of speed of 11 mph how long after the second runner starts the second runner take over the first runner

1 answer:

Firdavs [7]3 years ago

3 0

Answer:

2.25 hours

Step-by-step explanation:

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Use the intercept form to find the equation of the line with the given intercepts. The intercept form of the equation of a line

nadya68 [22]

Answer:

Equation of line in $x+y=10$

Step-by-step explanation:

The intercept form of line is given as,

$\dfrac{x}{a}+\dfrac{y}{b}=1$

Where, line has x intercept as a and y intercept as b.

Given that x intercept as $\left(c,0\right)$ , so $a = c$ . Also y intercepts as $\left(0,c\right)$ , so $b = c$ .

Substituting the value in intercept form of line,

$\dfrac{x}{c}+\dfrac{y}{c}=1$

Since denominator are same,

$\dfrac{x+y}{c}=1$

Multiplying by c on both sides,

$x+y=c$

Given that point $\left(4,6\right)$ lies on the line. So $x = 4$ and $y = 6$ .

Substituting the value,

$4+6=c$

$10=c$

Substituting the value in $x+y=c$

$x+y=10$

Therefore, equation of line in the standard form of equation of line is $x+y=10$ .

6 0

3 years ago

Ira Lisetskai [31]

I think it is C. or D. but if I'm wrong I'm really sorry. the closest one that I figured is D. If that helps.

7 0

3 years ago

<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B2%7D%7Bx%7D%20%20%3D%20%20%5Cfrac%7B5%7D%7B30%7D%20" id="TexFormula1" title=" \fr

11111nata11111 [884]

Answer
X=12
Hope it help

5 0

3 years ago

serious [3.7K]

$2x + 4 = - 8 + 5x \\ 12 = 3x \\ x = 4$

5 0

3 years ago

Help! Please show work. -14-12x=-3(4x-8)

defon

Answer:

no solution

Step-by-step explanion

there is no solution since the x's cancel out

3 0

3 years ago