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EastWind [94]
3 years ago
5

Help Me out please ???

Mathematics
2 answers:
TEA [102]3 years ago
8 0

I suppose that the correct answer could be

2y=7

kirill115 [55]3 years ago
5 0

Answer:

2y/7

Step-by-step explanation:

this might be wrong so I would get a second answer or opinion

You might be interested in
Find all the zeros of the polynomial function P(x) x^4-4x^3 -5x^2+38x- 30
worty [1.4K]

Answer:

The zeros of the polynomial function are 1, -3, 3+i and 3-i.

Step-by-step explanation:

The given function is

P(x)=x^4-4x^3-5x^2+38x-30

We can find a zero of the given function by hit and trial method.

Substitute x=1 in the given function.

P(1)=(1)^4-4(1)^3-5(1)^2+38(1)-30

P(1)=0

The value of function is 0 at x=1 it means (x-1) is a factor of given function.

Substitute x=-3 in the given function.

P(-3)=(-3)^4-4(-3)^3-5(-3)^2+38(-3)-30

P(-3)=0

The value of function is 0 at x=-3 it means (x+3) is a factor of given function.

(x-1)(x+3)=x^2 + 2 x - 3

Divide the given function by x^2 + 2 x - 3, to get remaining factors.

\frac{x^4-4x^3-5x^2+38x-30}{x^2 + 2 x - 3}=x^2 - 6 x + 10

So, the factor form of given function is

P(x)=(x - 1) (x + 3) (x^2 - 6 x + 10)

Quadratic formula: If a quadratic equation is ax^2+bx+c=0, then

x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

Using quadratic formula find the zeroes of x^2 - 6 x + 10.

x=\frac{-(-6)\pm \sqrt{(-6)^2-4(1)(10)}}{2(1)}

x=\frac{6\pm \sqrt{-4}}{2}

x=\frac{6\pm 2i}{2}                   [\because \sqrt{-1}=i]

x=3\pm i

Therefore the zeros of the polynomial function are 1, -3, 3+i and 3-i.

3 0
4 years ago
4m - 8 = 10 - 2m<br> solve for m
Goryan [66]

Answer:

Step-by-step explanation:

4m - 8 = 10 - 2m

6m - 8 = 10

6m = 18

m = 3

4 0
3 years ago
Read 2 more answers
Write in slope intercept form<br><br> 2y+x=1
irga5000 [103]

Answer:

y = -x/2 + 1/2 or

y = -1/2 x + 1/2

(these are equivalent)

Step-by-step explanation:

Slope-intercept form is:

y = mx + b

So we have to get the y all by itself on the left.

2y + x = 1

Subtract x from both sides.

2y = 1 - x

Divide both sides by 2. Divide all the terms by 2.

2y/2 = 1/2 - x/2

Simplify.

y = 1/2 - x/2

Rearrange the terms on the right side so that the x term is first and the constant is last.

y = -x/2 + 1/2

I think this is a good, reasonable and correct answer. But maybe you really want to see that m number (the slope) out in front of the x. Then you can write is as:

y = -1/2 x + 1/2

5 0
3 years ago
Read 2 more answers
A school typically sells 500 yearbooks each year for $50. The economics class does a project and discovers that they can sell 10
padilas [110]

Answer:

a is 100 b is 5

Step-by-step explanation:

a is 100 because if you substitute 100 for a and 1 for x (decrease of 5 dollars) you get 600 yearbooks sold which is a curate according to the economics class prediction

b is 5 because substituting 5 into b and 1 to x gives you 45 dollars per year book. this is accurate because a 5.dollar decrease in price makes the year books 45 dollars instead of 50

7 0
3 years ago
The answer and the work
zzz [600]

2.5d+5=65

minus both sides by 5 to cancel out the 5

2.5d=60

divide both sides by 2.5 to get d by itself

d=24

the number of days margo owned the plant is 24

Hope Your Thanksgiving Went Well, Here's Some Help Cleaning Up

-TheKoolKid1O1

7 0
3 years ago
Read 2 more answers
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