Priya’s cat weights 5 1/2 pounds and her dog weighs 8 1/4 pounds. How many times as heavy is the dog than the cat?

Mathematics

1 answer:

Margaret [11]3 years ago

7 0

Answer:

Step-by-step explanation:

2 3/4

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Please answer ASAP!! Thanks

charle [14.2K]

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When you go up 3 levels, you are at level 3 and then you go down 6 which is -3

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3 years ago

Identify as a direct variation, inverse variation or neither. The number of tons of coal burned by an old coal burning locomotiv

pochemuha

Answer: it is a direct variation.

Justification:

In a direct variation the variables are related by a proportionality constant in this way:

y = k x

Tthan means that the value of y is always the product of a constant times the value of x.

The situation discribed for the coal may be written as:
number of tons of coal burned: c

number of hours: h

⇒ c = k × h

Which is that you can calcualte the number of tons of coal burned at any time, once you know the proportionality constant k.

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3 years ago

Elena’s dad buys another type of cell phone that also usually sells for $250. He pays 75% of the usual price. How much did he pa

Mademuasel [1]

Elena’s dad paid $187.5.

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2 years ago

Write the equation of a hyperbola with vertices (0, -4) and (0, 4) and foci (0, -5) and (0, 5).

andre [41]

Check the picture below. So, more or less looks like so.

notice, the center is clearly at the origin, and notice how long the "a" component is, also, bear in mind that, is opening towards the y-axis, that means the fraction with the "y" variable is the positive one.

Also notice, the "c" distance from the center to either foci, is just 5 units.

$\bf \textit{hyperbolas, vertical traverse axis }\\\\
\cfrac{(y-{{ k}})^2}{{{ a}}^2}-\cfrac{(x-{{ h}})^2}{{{ b}}^2}=1
\qquad 
\begin{cases}
center\ ({{ h}},{{ k}})\\
vertices\ ({{ h}}, {{ k}}\pm a)\\
c=\textit{distance from}\\
\qquad \textit{center to foci}\\
\qquad \sqrt{{{ a }}^2+{{ b }}^2}
\end{cases}\\\\
-------------------------------\\\\$

$\bf \begin{cases}
h=0\\
k=0\\
a=4\\
c=5
\end{cases}\implies \cfrac{(y-{{ 0}})^2}{{{ 4}}^2}-\cfrac{(x-{{ 0}})^2}{{{ b}}^2}=1\implies \cfrac{y^2}{16}-\cfrac{x^2}{b^2}=1
\\\\\\
c=\sqrt{a^2+b^2}\implies c^2=a^2+b^2\implies \sqrt{c^2-a^2}=b
\\\\\\
\sqrt{5^2-4^2}=b\implies \boxed{3=b}
\\\\\\
\cfrac{y^2}{16}-\cfrac{x^2}{3^2}=1\implies \boxed{\cfrac{y^2}{16}-\cfrac{x^2}{9}=1}$

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3 years ago

In a class of 7, there are 3 students who have done their homework. If the teacher chooses 3 students, what is the probability t

Vitek1552 [10]

The probability of the first one didn't do homework s 4/7,
the second is 3/6,
the third is 2/5,

Multiple all of them together
4/7*3/6*2/5=0.1143 or 11.43%

Answer:
0.1143 or 11.43%

4 0

3 years ago