3 years ago

Help on number 4 pls!!

Mathematics

1 answer:

il63 [147K]3 years ago

6 0

Answer:

???

Step-by-step explanation:

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Write an equation of the line that passes through the given points. (-1,5) and (2, - 7)

Vanyuwa [196]

Answer:

The equation of the straight line is 4x +y = 1

Step-by-step explanation:

Step(i):-

Given points are (-1,5) and ( 2,-7)

Slope of the line

$m =\frac{y_{2}-y_{1} }{x_{2} -x_{1} } =\frac{-7-5}{2-(-1)} = \frac{-12}{3} = -4$

slope of the line m = -4

Step(ii):-

The equation of the straight line passing through the point (-1,5) and having slope 'm' = -4

$y - y_{1} = m( x-x_{1} )$

y - 5 = -4 ( x-(-1))

y -5 = -4 x -4

4 x + y -5 +4=0

4x +y -1 =0

Final answer:-

The equation of the straight line is 4x +y = 1

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3 years ago

Find the area of each figure. Use 3.14 for x.

Serga [27]

8.10/2 + 2.3 = 46 total area is 46

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3 years ago

Hey I need to know what 2+2 is thanks guys ❤️

dmitriy555 [2]

Answer:

Step-by-step explanation:

2 fingers and you add 2 more it equals 4

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4 years ago

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Evaluate the expression for c = -19. C + 15 =

KonstantinChe [14]

Answer:

the Answer is -4

Step-by-step explanation:

since you add 15 to -19 you get -4

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Find the value of each of these quantities. C(5,3) C(8,8) C(12,6)

Paul [167]

$C^n_k= \frac{n!}{(n-k)!c!} 
\\
\\C^5_3= \frac{5!}{(5-3)!3!} = \frac{5!}{2!3!} = \frac{5\times4\times3}{3\times2\times1} =10
\\
\\C^8_8= \frac{8!}{(8-8)!8!} = \frac{8!}{0!8!} = \frac{8!}{1\times8!}=1
\\
\\C^{12}_6= \frac{12!}{(12-6)!6!} = \frac{12!}{6!6!} = \frac{12\times11\times10\times9\times8\times7}{6\times5\times4\times3\times2\times1} =\frac{11\times3\times4\times7}{1} =924$

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3 years ago