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3 years ago

Two fifths of the square of the number j in algebraic exprission

Mathematics

2 answers:

meriva3 years ago

8 0

Answer: $\dfrac{2}{5}j^2$

Step-by-step explanation:

The given mathematical statement : "two fifths of the square of the number j "

To write the algebraic expression for the given mathematical statement.

We can write square of the number j as $j^2$

and two-fifth as $\dfrac{2}{5}$

Then, the final algebraic expression will be :-

$\dfrac{2}{5}j^2$

Tomtit [17]3 years ago

5 0

Two-fifths ( $\frac{2}{5}$ ) of the square of the number j (j²)

$\frac{2}{5}$ j²

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At beginnings of population study a city had 330,000 people. Eac year since, the population has grown by 6.8% . let t be the num

insens350 [35]

Answer:

Y=330,000(1.068)^t

Step-by-step explanation:

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3 years ago

A teacher has 3 hours to grade all the papers submitted by the 35 students in her class. She gets through the first 5 papers in

Andreyy89

So, she has 3hrs to grade all papers, for 35 students.. alrite.

the first 5, she does them in 30minutes.. what's the speed rate? well, 5/30 or 1/6

now, she has still 2 hours and a half, or 150 minutes, to do the remaining 30 papers... she has to work at a rate of 30/150 then... which is 1/5 simplified.

now if we take 1/6 as the 100%, what is 1/5 in percentage then?

$\bf \begin{array}{ccllll}
rate&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
\frac{1}{6}&100\\\\
\frac{1}{5}&x
\end{array}\implies \cfrac{\frac{1}{6}}{\frac{1}{5}}=\cfrac{100}{x}\implies \cfrac{1}{6}\cdot \cfrac{5}{1}=\cfrac{100}{x}\implies \cfrac{5}{6}=\cfrac{100}{x}
\\\\\\
x=\cfrac{6\cdot 100}{5}\implies x=120$

so 1/5 is 120% in relation to 1/6... meaning the rate of 1/5 she needs to move through, namely 1 paper every 5 minutes, is 20% faster than 1/6.

8 0

3 years ago

Read 2 more answers

I need help with this please

aliya0001 [1]

Answer:

I’m not sure what that means but I think it’s the one with the blue

Step-by-step explanation:

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3 years ago

In the Sahara Desert one day it was 136oF. In the Gobi Desert a temperature of

coldgirl [10]

Answer: $186^{\circ}F$

Step-by-step explanation:

Given : In the Sahara Desert one day it was 136°F.

In the Gobi Desert a temperature of -50°F was recorded.

Clearly , 136°F> -50°F

Then, the difference between these two temperatures will be :-

$136^{\circ}F-(-50)^{\circ}F\\\\=(136+50)^{\circ}F\ \ [\because \text{Product two neagtive sign is positive]}\\\\=186^{\circ}F$

Hence, the difference between these two temperatures = $186^{\circ}F$

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3 years ago

if you stop at random in front of an animal exhibit,What is the probability that you will be looking at monkeys? I put the table

Mkey [24]

Answer:

1/10

step-by-step explanation:

----------------------------------

| animals | percent of animals |

----------------------------------

| goats | 16% |

----------------------------------

| camels | 4% |

----------------------------------

| giraffes | 6% |

----------------------------------

| llamas | 6% |

----------------------------------

| deer | 1% |

----------------------------------

| monkeys | 10% |

----------------------------------

| birds | 27% |

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| reptiles | 14% |

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| bears | 16% |

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( sorry if the table above isnt 100% right or straight ^ )

first you add up all the percents of how much animals are in this exhibit

16 + 4 + 6 + 6 + 1 + 10 + 27 + 14 + 16

= 100 %

then since we are looking for the probability of stopping in front of the monkeys, we take that 100 we got earlier and get the 10% of monkeys from our table

10/100

but since there isnt a 10/100 on the answers we look for something that equals to 10/100 and 1/10 does since you can just times both the 1 and 10 to equal the 10 and 100 you were looking for

1/10

making 1/10 your answer!

hope this helps! and if you need anymore help on this math question just ask me :)

4 0

2 years ago