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3 years ago

8

if alpha and beta are the zeros of the quadratic polynomial FX = x square - 5 x + 4 find the value of one by alpha + 1 by beta-2

alpha x beta

1 answer:

Kryger [21]3 years ago

5 0

Answer:

suggestions use math scanner or mathaway or algebra calculator they will provide the steps and answer

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A rectangle's length is 6 units greater than its width. write an equation expressing the rectangle's area, a, as a function of w

vladimir1956 [14]

Let the width be w

Width = w
Length = w + 6
Area = a

a = w(w + 6)
a = w² + 6w

Answer: a = w² + 6w

7 0

3 years ago

Read 2 more answers

Which number line shows the solution set for |y-9| <12

RUDIKE [14]

Answer:

Option c

$y\geq-3$ or $y \leq 21$

Step-by-step explanation:

The absolute value is a function that transforms any value x into a positive number.

Therefore, for the function $f(x) = |x|$ x> 0 for all real numbers.

Then the inequation:

$|y-9| \leq 12$ has two cases

$(y-9)$ if $y \geq 9$ (i)

$-(y-9)$ if $y < 9$ (ii)

We solve the case (i)

$y \leq 9 + 12\\y\leq21$

We solve the case (ii)

$-y +9 \leq 12\\-y \leq 12-9\\y \geq -3$

Then the solution is:

$y\geq-3$ or $y \leq 21$

8 0

3 years ago

How many line segments are needed to make a row of six triangles

Tanzania [10]

18 line segments also for faster and better u can 6 times 3 since there is already three in a triangle.

8 0

3 years ago

Reuben bought a desktop computer and a laptop computer. Before finance charges, the laptop cost $150 more than the desktop. He p

cupoosta [38]

Same case as Pablo's, more or less.

a = price for the desktop

b = price for the laptop

we know the laptop is 150 bucks more than the desktop, b = a + 150.

how much is 7% of a? (7/100) * a, 0.07a.

how much is 9.5% of b? (9.5/100) * b, 0.095b.

total interests for the financing add up to 303, 0.07a + 0.095b = 303.

$\bf \begin{cases}
\boxed{b}=a+150\\
0.07a+0.095b=303\\
----------\\
0.07a+0.095\left(\boxed{a+150} \right)=303
\end{cases}
\\\\\\
0.07a+0.095a+14.25=303\implies 0.165a=288.75
\\\\\\
a=\cfrac{288.75}{0.165}\implies a=1750$

how much was it for the laptop? well b = a + 150.

8 0

3 years ago

What percentage describes the probability of an impossible event

stich3 [128]

50% chance
Explanation
It’s possible... might might not happen

7 0

3 years ago