3 years ago

Someone help me fill in this chart

Mathematics

1 answer:

ozzi3 years ago

8 0

Slope-intercept forms:

line r= y= 2/5x+2
line s= y= -3/2x+3
line T= y= -2/3x-2

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A rectangle has a perimeter of 84 meters and a length of 35 meters. What is the widith

NeTakaya

Answer:

The width is 7 metres.

Step-by-step explanation:

35 x 2 = 70

84 - 70 = 14

14 ÷ 2 = 7 metres.

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3 years ago

Slicing absolute value what is |-3x|=18?

kow [346]

$|-3x|=18\iff-3x=18\ \vee\ -3x=-18\qquad|:(-3)\\\\\boxed{x=-6\ \vee\ x=6}$

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4 years ago

13....................

Mashcka [7]

13.

(a)

$y=-5x^2+21x-3$

for x = 2:

$y=-5(2)^2+21(2)-3=-20+42-3=19$

for x = 5

$y=-5(5)^2+21(5)-3=-125+105-3=-23$

(b)

The graph is:

(c)

Using the graph:

$\begin{gathered} x=1.8,y=18.6 \\ x=0.548,y=7 \\ x=3.65,y=7 \end{gathered}$ $\begin{gathered} x=1.8 \\ y=-5(1.8)^2+21(1.8)-3=-16.2+37.8-3=18.6 \end{gathered}$ $\begin{gathered} y=7 \\ -5x^2+21x-3=7 \\ -5x^2+21x-10=0 \end{gathered}$

Using the quadratic formula:

$\begin{gathered} x=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a} \\ x=\frac{-21\pm\sqrt[]{21^2-4(-5)(-10)}}{2(-5)} \\ x=\frac{-21\pm\sqrt[]{241}}{-10} \\ x=0.54758 \\ or \\ x=3.6524 \end{gathered}$

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1 year ago

What is 1459 * 569/7+997

Daniel [21]

Answer:

837150 /7

Step-by-step explanation:

459( 569 /7 )+997

830171 /7 +997

837150 /7

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3 years ago

While measuring specimens of nylon yarn taken from two spinning machines, it was found that 9 specimens from the first machine h

stepladder [879]

kaaaaaaaaaaaaaaaaabbbichaStep-by-step explanation:

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