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DanielleElmas [232]

2 years ago

7

Jack bought snacks for his team's practice. He bought a bag of chips for $3.46 and a 4-pack of juice bottles. The total cost bef

ore tax was $13.30. How much was each bottle of juice?

2 answers:

Hatshy [7]2 years ago

7 0

$2.46 hope this helps

Mrrafil [7]2 years ago

3 0

Answer : it’s 2.46 dollars

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Which graph correctly solves the system of equations below? <br> y=-x^2+1 <br> y=x^2-4

KIM [24]

Red line shows
y=x^2-4 , cause it's going through point (0,-4)

So blue line shows
y= -x^2+1 Point (1,0) belong to it , moreover x factor is negative , so the arms of parabola will go down

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3 years ago

Simplify the following and leave your answer in smallest form

LuckyWell [14K]

Answer:

1/59

Step-by-step explanation:

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2 years ago

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1. If a polynomial of Degree 4 has an imaginary zero at -2i and a real zero at 5, how many imaginary zeros does it have?

Vadim26 [7]

Answer:

Complex roots for polynomials equations will always come in conjugate pairs. Since 1-2i is a root, 1+2i will also be a root. (Just switch the sign of the imaginary part to its opposite.)

Step-by-step explanation:

So far we have 1-2i and 1+2i as roots. We need two more to make a 4th degree polynomial.

x=1 with multiplicity of 2 means that we count the root twice when we write down the polynomial: (x - 1)(x - 1) = (x - 1)2

Putting it all together, we can construct our polynomial of degree 4 as

y = f(x) = (x - 1)(x - 1)[x - (1-2i)][x - (1+2i)]

Multiply the factors (FOIL):

[x - (1-2i)][x - (1+2i)] =

x2 - (1+2i)x - (1-2i)x + (1-2i)(1+2i) =

x2 - x - 2ix - x + 2ix + (1 + 2i - 2i + 4) =

x2 - 2x + 5

(x - 1)(x - 1) = x2 - x - x + 1 = x2 - 2x + 1

Now multiply the two underlined expressions:

y = (x2 - 2x + 5)(x2 - 2x + 1)

= x4 - 2x3 + 5x2 - 2x3 + 4x2 - 10x + x2 - 2x + 5 by multiplying term by term

= x4 - 4x3 + 10x2 -12x + 5 by collecting like terms.

4 0

2 years ago

A comic-strip writer churns out a different number of comic strips each day. For 16 days, the writer logged the number of comic

Nimfa-mama [501]

First we need to graph the given values.

there are total 16 data so x-value can be taken as 1,2,3,...,16

given values will be assigned as y-values as shown in attached table.

Now we just graph those points to see the type of skew.

From graph we see that points are very close and almost in the shape of a line. Lines seems to be moving upward when going to the right side.

Hence correct answer will be "positive skew".

4 0

3 years ago