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3 years ago

Consider this equation: 0B = 21. Is the equation always false, no matter what value you give the variable? Justify your answer.

Mathematics

1 answer:

earnstyle [38]3 years ago

4 0

Answer:

because the variable is being multiplied by 0.

Step-by-step explanation:

the B in the equation is just a place holder for any number you can think of.

the problem with that is that any number times 0 will always give you 0, so the equation will look like this now

0 = 21

this equation is false because 0 is not equal to 21.

21 is equal to 21.

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288/32 in simplest form

inn [45]

288/32=144/16=72/8=9

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3 years ago

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OlgaM077 [116]

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3 years ago

Justin rides his bicycle 2.5 kilometers to school. Luke walks 1950 meters to school. How much farther does Justin walk than Luke

guapka [62]

Hello!

1950 m = 1.95

2.5 - 1.95 = 0.55

ANSWER: Justin rides his bike 0.55 km father than Luke.

I hope this helped you! c:

8 0

3 years ago

Suppose you choose a marble from a bag containing 3 red marbles, 3 white marbles, and 5 blue marbles. You return the first marbl

pav-90 [236]

Answer:

B.15/121

Step-by-step explanation:

red-3
white-3
blue-5

total-11

P(red)= 3/11
P(blue)=5/11
P(red+blue)= 3/11*5/11= 15/121

3 0

3 years ago

The dimensions of an iPhone are x – 2 and x + 3. If the area of an iPhone is 14 square inches, find the dimensions of the iPhone

QveST [7]

Answer:

The dimensions of the iphone are 2 inches by 7 inches.

Step-by-step explanation:

Given that,

The dimensions of an iPhone are x – 2 and x + 3.

The area of an iphone is 14 sq inches

We need to find the dimensions of the iPhone. It is in the shape of a rectangle. Its area is given by :

$A=l\times b\\\\(x-2)(x+3)=14\\\\x^2-2x+3x-6=14\\\\x^2+x-6-14=0\\\\x^2+x-20=0\\\\x^2+5x-4x-20=0\\\\x(x+5)-4(x+5)=0\\\\(x-4)(x+5)=0\\\\x=4\ and\ x=-5$

Neglecting negative value

First dimension = (x-2) = (4-2) = 2 inches

Other dimension = (x+3) = (4+3) = 7 inches

Hence, the dimensions of the iphone are 2 inches by 7 inches.

3 0

3 years ago