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4 years ago

Evaluate the expression when m= 5 and n= 32. n-6m

Mathematics

1 answer:

Sergeeva-Olga [200]4 years ago

5 0

Answer:

The answer is 2.

Step-by-step explanation:

You have to put in the values of m and n into the expression:

$n - 6m$

$let \: m = 5 \\ let \: n = 32$

$32 - 6(5)$

$= 32 - 30$

$= 2$

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What is the value of a in the equation 5a – 10b = 45, when b = 3?

andriy [413]

To get the answer we have to substitute b=3 and solve it.
5a-10b=45
5a-10*3=45
5a-30=45 /+30 add 30 both sides
5a-30+30=45+30
5a=75 /:5 divide both sides by 5
5a:5=75:5
a=15 - its the answer

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3 years ago

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Jan 258:00:56 AM

horsena [70]

Answer:

The equation of the straight line in point-slope form

$y - 4 = \frac{7}{9} (x-0)$

The equation of the straight line

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Step-by-step explanation:

Step(i):-

Given that the points (0,4) and (-9,-3)

The slope of the line

$m = \frac{y_{2} - y_{1} }{x_{2}- x_{1} } = \frac{-3-4}{-9-0} = \frac{7}{9}$

Step(ii):-

Equation of the straight line passing through the point (0,4) and having slope m = 7/9

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$y - 4 = \frac{7}{9} (x-0)$

9 y - 36 = 7x

9y = 7x + 36

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Slope - intercept form

$y = \frac{7x}{9} +4$

Final answer:-

The equation of the straight line in point-slope form

$y - 4 = \frac{7}{9} (x-0)$

The equation of the straight line

7x -9y +36 =0

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Ira Lisetskai [31]

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