4 years ago

Two coplanar lines that are perpendicular to the same line are parallel.

1 answer:

8 0

Coplanar lines are those lines which lie on the same plane. if coplanar lines are perpendicular to the same line then they are always parallel. this is because coplanar lines lie on the same planeand if they are perpendicular to each other then they must be parallel or in antiparallel sense.

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The manufacturer of a CD player has found that the revenue R (in dollars) is R(p)= -4p2+1200p, when the unit price is p dollars.

qaws [65]

Answer: 9000$

Step-by-step explanation:

Let 's use the formula to find the vertex of the parabola:

ax²+bx+c=0

$\displaystyle x_v=-\frac{b}{2a} \\\\ Where :\\\\ y_v- maximum \ \ income \\\\ y_v=a(x_v)^2+bx_v+c \\\\ Then \ in \ \ our \ \ case : \\\\ -4p^2+1200p =0 \\\\ x_v=-\frac{1200}{-4\cdot 2} =150 \\\\ y_v=-4\cdot (150)^2+150\cdot 1200 \\\\ y_v=150\cdot 1200-150\cdot 600 \\\\ y_v=600\cdot 150=\bf 9000 \$

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3 years ago

Use the distributive property to rewrite the expression and solve.<br><br> 9*72 = 9*?+ 9*2 =

Anastasy [175]

A(b+c)=ab+ac
we have
9(72)=9*?+9*2
c=2
sub, but it must be equal to minus 2 from 72
7(70+2)=9*70+9*2

the question mark is 70
and the restult of the equation is 648

?=70

7 0

3 years ago

Read 2 more answers

Please please help It’s my last assignment

spin [16.1K]

A. Congruent by SSS

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3 years ago

A gardener wants to enclose a circular garden with a square fence. If the circumference of the circular garden is about 99 feet,

Andreas93 [3]

The square will be equal to the diameter of the circle. The circumference of a circle is π times the diameter, and the perimeter of the square is four times times that diameter...

C=πd

d=C/π

p=4d so

p=4C/π feet, since C≈99 ft and π≈3.14

p≈4(99)/(3.14)

p≈126.1 ft (to nearest tenth of a foot)

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The answer is 6 i think

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