2 years ago

Help.. only if you know

Mathematics

1 answer:

Andrew [12]2 years ago

7 0

I dont know but im a material girl with balls

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What does -1/2 * 1/2 = to

sertanlavr [38]

The answer is -1/4.

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3 years ago

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In Buffalo, New York, the temperature was 10°F in the morning. If the temperature rose 10°F, what is the temperature now?

Bond [772]

Answer:

20 degrees F

Step-by-step explanation:

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3 years ago

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3 years ago

Find the ratio in which the line joining the points (2, 4, 16) and (3, 5, -4) is divided by the plane 2x – 3y+ z+ 6 = 0. Also fi

Nastasia [14]

Answer:

Step-by-step explanation:

let the plane intersects the join of points in the ratio k:1

let (x,y,z) be the point of intersection.

$x=\frac{3k+2}{k+1} \\y=\frac{5k+4}{k+1} \\z=\frac{-4k+16}{k+1} \\\because ~(x,y,z)~lies~on~the~plane.\\2(\frac{3k+2}{k+1} )-3(\frac{5k+4}{k+1} )+\frac{-4k+16}{k+1} +6=0\\multiply~by~k+1\\2(3k+2)-3(5k+4)+(-4k+16)+6(k+1)=0\\6k+4-15k-12-4k+16+6k+6=0\\-7k+14=0\\k=2\\x=\frac{3*2+2}{2+1} =\frac{8}{3} \\y=\frac{5*2+4}{2+1}= \frac{14}{3} \\z=\frac{-4*2+16}{2+1} =\frac{8}{3}$

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and ratio of division is 2:1

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3 years ago

A photographic negative is 3 cm by 2 cm. A similar print from the negative is 9cm long on its shorter side. What is the length o

lbvjy [14]

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Step-by-step explanation:

9 divided by 2 = 4.5 *There's a 4.5 increase

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The new print is 13.5cm by 9cm

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