Please help it is due at 4:30

Mathematics

2 answers:

xenn [34]3 years ago

7 0

Answer:

Increase, 200%

Step-by-step explanation:

jolli1 [7]3 years ago

4 0

Answer:

36-12= 24%

Step-by-step explanation:

um i think this is correct if so pls give brainliest :)

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7. 4 = 8X + 5Y _____________________________

Strike441 [17]

As the equation does not consists like terms we can only get x , y equations.

Step-by-step explanation:

Firstly, they are not like terms.

If the value to be is found is X then,

8x+5y=4

Now subtract 5y on both sides

8x+5y-5y=4-5y

here both positive 5y and negative 5y get cancelled

Now divide by 8

x=(4-5y)/8

If we need y value then,

subtracting both sides by 8x

5y=4-8x

Now dividing with 5 on both sides

y=(4-8x)/5 =>y=4/5 -8x/5

According to Y=mx+c

slope = m = 4/5

y-intercept = -8x/5.

8 0

3 years ago

If (x − 2)^2=49, then x could be ?

Ket [755]

$(x - 2)^2=49\\ \\ x^2-4x +4 -49=0\\ \\x^2-4x -45 = 0\\ \\\Delta = b^{2}-4ac = (-4)^{2}-4*1* (-45)= 16+180=196 \\ \\x_{1}=\frac{-b-\sqrt{\Delta }}{2a} =\frac{4-\sqrt{196}}{2}=\frac{4-14}{2}=\frac{-10}{2}=-5 \\ \\x_{2}=\frac{-b+\sqrt{\Delta }}{2a} =\frac{4+\sqrt{196}}{2}=\frac{4+14}{2}=\frac{18}{2}=9 \\ \\Answer : \ x=-5 \ or \ x= 9$