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3 years ago

Please help quarter ends tomorrow and I don’t know what to do I’m failing all my classes

Mathematics

1 answer:

Nutka1998 [239]3 years ago

3 0

Step-by-step explanation:

x = -10, y = 10

y= -4x+4

m1×m2 = -1

-4 × m2 = -1

m2 = 1/4

y-y1 = m(x-x1)

y-10 = 1/4(x+10)

y-10 = 1/4x +10/4

(×4)

4y-40=x+10

4y=x+50

x-4y+50=0

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If 75% of a number is 15, 15% of that number

natta225 [31]

Answer:

Step-by-step explanation:

0.75 x ? = 15

? = 15/0.75 = 20

15% of 20 = 3

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2 years ago

Simplify: (-3x^3+2x^2+4x)-(8x^4-5x^3+6x^2-2x

sergejj [24]

Answer:

−8^4+2^3−4^2+6

Step-by-step explanation:

Distribute the - to 8x^4-5x^3+6x^2-2x:

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Now simplify:

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2 years ago

Solve: x + y = 7 3x - 2y = 11 By using Substituting method.

Salsk061 [2.6K]

$\large\underline{\sf{Solution-}}$

$\sf \longmapsto x + y = 7 \: \: - - - (i)$

$\sf \longmapsto 3x - 2y = 11 \: \: - - - (ii)$

By first equation,

$\sf \longmapsto x + y = 7$

$\sf \longmapsto x = 7 - y$

Now, we can find the original value of y.

$\sf \longmapsto 3x - 2y = 11$

$\sf \longmapsto 3(7 - y) - 2y = 11$

$\sf \longmapsto 21 - 3y - 2y = 11$

$\sf \longmapsto 21 - 5y = 11$

$\sf \longmapsto - 5y = 11 - 21$

$\sf \longmapsto - 5y = - 10$

$\sf \longmapsto y = \dfrac{ - 10}{ - 5}$

$\sf \longmapsto y = 2$

Now, we can find the original value of x.

$\sf \longmapsto x + y = 7$

$\sf \longmapsto x + 2 = 7$

$\sf \longmapsto x = 7 - 2$

$\sf \longmapsto x = 5$

Therefore, the values of x and y are 5 and 2 respectively.

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2 years ago

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Marta_Voda [28]

(2+1)+3=2+(2+2)

Any two numbers that add to 4.

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1 year ago

What are the solutions to the equation (2x-5)(3x-1)=0?

lutik1710 [3]

(2x-5)(3x-1)=0

2x-5 = 0 or 3x-1= 0
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x = 5/2 x = 1/3

Answer: x=5/2; x=1/3

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3 years ago

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