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Alexeev081 [22]
3 years ago
8

What is the solution of the equation z2-5z-24=0

Mathematics
2 answers:
Pavlova-9 [17]3 years ago
7 0
I think z is ether 8 or -3. hope this helps <span />
iren [92.7K]3 years ago
3 0
-3 and 8 will result in your answer being 0.
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The descriminant is b^2-4ac so for 26 it would be -5^2 - 4 (1) (7). The quadratic formula is -B plus or minus the square root of b squared minus 4ac over 2a
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What is -0.37 as a fraction in simplest form.
Lelu [443]
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Which expression is equivalent
Tatiana [17]

Given expression is

\sqrt[4]{\frac{16x^{11}y^8}{81x^7y^6}}

Radical is fourth root

first we simplify the terms inside the radical

\frac{x^{11}}{x^7}=x^4

\frac{y^(8)}{y^6}=y^2

So the expression becomes

\sqrt[4]{\frac{16x^4y^2}{81}}

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\sqrt[4]{16} = 2

\sqrt[4]{81} = 3

\sqrt[4]{x^4} = x

We cannot simplify fourth root (y^2)

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\frac{2x\sqrt[4]{y^2}}{3}

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8 0
3 years ago
A small independent organic food store offers a variety of specialty coffees. To determine whether price has an impact on sales,
lorasvet [3.4K]

Answer:

b= -4.68

Step-by-step explanation:

Hello!

We have to study variables:

Y: Monthly coffe sales

X: Price per pound of coffe ($)

The estimate regression line is

^Yi= a + bxi ∀ (i=1,.....,10)

The slope of the estimated regression line is represented by b.

The formula I'll use to calculate it is:

b= [n∑xiyi -(∑xi)*(∑yi)]/ n∑xi²-(∑xi)²

To calculate b we need to do some auxiliary calculations:

∑xiyi= 4213.15

∑xi= 87.47

∑yi= 545

∑xi²= 883.3703

Then we replace the formula:

b= [10*4213.15-(87.47)*(545)]/ n883.3703-(87.47)²

b= -4.68

I hope you have a SUPER day!

5 0
3 years ago
What is the slope line of a perpendicular to this line " y = 5x -4 "
ankoles [38]

Answer:

m=9

Step-by-step explanation:

5 0
3 years ago
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