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3 years ago

9

a blue whale weighs about 300,000 pounds, and a great white shark weighs about 4,000 pounds. how many times the weight of a grea

t white shark is the weight of a blue whale?

2 answers:

egoroff_w [7]3 years ago

8 0

I did the math its 75 times wow I'm astonished

Tanya [424]3 years ago

3 0

300,000 / 4,000 = 75

so the weight of the blue whale is 75 times bigger then the weight of the shark

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I don't know how to do this or what i'm doing plz help

mote1985 [20]

recalling that d = rt, distance = rate * time.

we know Hector is going at 12 mph, and he has already covered 18 miles, how long has he been biking already?

$\bf \begin{array}{ccll} miles&hours\\ \cline{1-2} 12&1\\ 18&x \end{array}\implies \cfrac{12}{18}=\cfrac{1}{x}\implies 12x=18\implies x=\cfrac{18}{12}\implies x=\cfrac{3}{2}$

so Hector has been biking for those 18 miles for 3/2 of an hour, namely and hour and a half already.

then Wanda kicks in, rolling like a lightning at 16mph.

let's say the "meet" at the same distance "d" at "t" hours after Wanda entered, so that means that Wanda has been traveling for "t" hours, but Hector has been traveling for "t + (3/2)" because he had been biking before Wanda.

the distance both have travelled is the same "d" miles, reason why they "meet", same distance.

$\bf \begin{array}{lcccl} &\stackrel{miles}{distance}&\stackrel{mph}{rate}&\stackrel{hours}{time}\\ \cline{2-4}&\\ Hector&d&12&t+\frac{3}{2}\\[1em] Wanda&d&16&t \end{array}\qquad \implies \begin{cases} \boxed{d}=(12)\left( t+\frac{3}{2} \right)\\[1em] d=(16)(t) \end{cases}$

$\bf \stackrel{\textit{substituting \underline{d} in the 2nd equation}}{\boxed{(12)\left( t+\frac{3}{2} \right)}=16t}\implies 12t+18=16t \\\\\\ 18=4t\implies \cfrac{18}{4}=t\implies \cfrac{9}{2}=t\implies \stackrel{\textit{four and a half hours}}{4\frac{1}{2}=t}$

7 0

2 years ago

The quotient of the opposite of a number squared and three

Mars2501 [29]

Answer:

"The quotient of the opposite of a number squared and 3"

Take "the opposite of a number squared" and call it y.

So you get "The quotient of y and 3"

This is y/3.

Now what is y? "The opposite of a number squared"

Take "The opposite of a number" and call it z.

So y is "z squared"

Replacing y, we get z^2 / 3

But what is z? "The opposite of a number"

Call "a number" x.

The opposite of x is -x.

So z is "-x"

Replacing z, we get (-x)^2 / 3

8 0

3 years ago

(05.05 HC)The four points (-2,5), (-2,-1). (6,-1), and (3,5) are the vertices of a polygon. What is the area, in square units, o

Dafna11 [192]

Answer:

Step-by-step explanation:

D

3 0

3 years ago

Which of these is the correct root of the word judicial?

Kobotan [32]

Pretty sure law. judicial means of, by, or appropriate to a court or judge.

6 0

2 years ago

Ciara is making a new dance outfit for a dance performance in her high school. She needs 2 1/2 yards of fabric for the shawl. Sh

sergey [27]

Answer:

1 1/4 yards of fabric

Step-by-step explanation:

2 1/2+ 1 3/4=4 1/4

4 1/4 - 3 = 1 1/4

8 0

3 years ago

Read 2 more answers