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alekssr [168]
3 years ago
12

Mariko is training for a race and now

Mathematics
1 answer:
cluponka [151]3 years ago
4 0

Answer:

n = 52m/6.5

Step-by-step explanation:

We are given that;

Distance run; d = 6.5 miles

Time;t = 52 minutes.

Thus, at rate per minute, is;

v = 6.5/52 miles/minutes

Now, we want to find number of minutes, n, she will take to

run m miles at this rate of 6.5/52.

Thus, m/n = 6.5/52

Cross multiply to give;

52m = 6.5n

n = 52m/6.5

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So your answer is $2,220
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6. Jack buys a 6 pound bag of sand to put in his two fish tanks.
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Find the slope of the line.<br><br> (Image)<br><br> A. 1/2<br> B. -1/2<br> C. -2<br> D.2
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Describe the combined variation that is modeled by the formula h=3B/A
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3 0
3 years ago
Solve the system by the<br> substitution method.<br> -12x - 2y = -4<br> 6x + 3y = 18
schepotkina [342]

Answer: x = -1 , y = 8✔️

Step-by-step explanation:

-12x - 2y = -4 } Equation 1

6x + 3y = 18 } Equation 2

<em>We can extract the value of x from the equation 2: </em>

6x + 3y = 18 } Equation 2

6x = 18 - 3y

x = (18 - 3y)/6 } Equation 2

<em>Then we can substitute this value of x in equation 1: </em>

-12x - 2y = -4 } Equation 1

-12·(18 - 3y)/6 - 2y = -4

-36 + 6y -2y = -4

4y = -4 + 36

4y = 32

y = 32/4 = 8

<em>Now we can substitute this value of y in equation 2: </em>

x = (18 - 3y)/6 } Equation 2

x = (18 - 3·8)/6 = (18 -24)/6 = -6/6 = -1

Answer: x = -1 , y = 8✔️

<h3>Check </h3>

<em>We can check this result by substituting these values of x and y into the equations: </em>

-12x - 2y = -4 } Equation 1  

-12·(-1) - 2·8 = -4 ► 12 - 16 = -4✔️ checked!

6x + 3y = 18 } Equation 2

6·(-1) + 3·8 = 18 ► -6 + 24 = 18✔️ checked!

<h2><em>Spymore</em></h2>
5 0
3 years ago
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