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3 years ago

12

Find the perimeter of each figure select the figure that have a perimeter of 20 units

2 answers:

nata0808 [166]3 years ago

8 0

It would have been helpful if you put the picture

klasskru [66]3 years ago

8 0

23 perimeter units is the answer

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Explain why 3x^2+kx-1 is never always positive for any value of k

lianna [129]

Hello :
<span>(3x²+kx-1) is a quadratic polynome when : a =3 , b=k , c= -1
the discriminat </span>Δ = b²-4ac ≥ 0 because ac = -3 <span><<span> 0
-4ac </span></span>>0 and b²<span>≥0
the </span> quadratic polynome has :2 solutios or 1 solution (Change of sign)
conclusion : <span>is never always positive for any value of k</span>

8 0

3 years ago

Solve: 5x - 3(x - 2) = 8

rusak2 [61]

Answer:

Step-by-step explanation:

5x - 3x + 6 = 8

2x + 6 = 8

2x = 2

x = 1

4 0

3 years ago

Write an equation for each linear function described. Show your work. The graph of the function passes through the point (2,1),

svp [43]

Step-by-step explanation:

As

The graph of the function passes through the point (2,1), and

y increases by 4 when x increases by 1.

so

x y

2 1

3 5

4 9

5 13

6 17

and so on

From the table:

$\mathrm{Slope\:between\:two\:points}:\quad \mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}$

$\left(x_1,\:y_1\right)=\left(2,\:1\right),\:\left(x_2,\:y_2\right)=\left(3,\:5\right)$

$m=\frac{5-1}{3-2}$

$m=4$

As the slope-intercept form of the line is

$y=mx+b$

putting m=4 and any point, let say (2, 1) to find y-intercept 'b'.

$1=\left(4\right)2+b$

$8+b=1$

$8+b-8=1-8$

$b=-7$

So putting $b=-7$ and $m=4$ in the slope-intercept form of the line

$y=\left(4\right)x+\left(-7\right)$

$y=4x-7$

Therefore, the equation for the linear function will be:

$y=4x-7$

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3 years ago

What is the slope of the line graphed below

bonufazy [111]

1/5 the slop is the rise over run

3 0

3 years ago

Read 2 more answers

Claire is ordering trophies for her school. Company A charges $4.50 for each trophy and a one-time engraving fee of $26. Company

Ugo [173]

Answer:

my putyy

Step-by-step explanation:

ong its my putty hehehe

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3 years ago