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3 years ago

5 (n+2) = 3/5 (5+10n) solve this

2 answers:

4 0

$5(n+2)=\frac{3}{5}(5+10n) \\\\ 5n+10= \frac{3}{5}*5(1+2n) \\\\ 5n+10=3(1+2n) \\\\ 5n+10=3+6n \\\\ 5n-6n=3-10 \\\\ -n=-7 \\\\ \boxed{n=7}$

mars1129 [50]3 years ago

3 0

$5(n+2)=\frac{3}{5}(5+10n)\\\\5\times n+5\times2=\frac{3}{5}\times5+\frac{3}{5}\times10n\\\\5n+10=3+3\times2n\\\\5n+10=3+6n\ \ \ \ \ |subtract\ 10\ from\ both\ sides\\\\5n=-7+6n\ \ \ \ \ |subtract\ 6n\ from\ both\ sides\\\\-n=-7\\\\\boxed{n=7}$

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A waterfall has a height of 1900 feet. A pebble is thrown upward from the top of the falls with an initial velocity of 12 feet p

saw5 [17]

Answer:

Step-by-step explanation:

h is the height of the pebble after a certain amount of time has gone by. Since we are told to find that time when the pebble is on the ground, we say that h = 0 since the height of something on the ground has no height at all. Then factor the quadratic.

$-16t^2+12t+1900=0$

Throw that into the quadratic formula or however you were taught to factor irrational quadratics (maybe completing the square?) to get that

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7 0

3 years ago

There are 72 students in the gym. 45 students are girls. The rest are boys. What is the ratio of boys to girls?

PIT_PIT [208]

Answer:

3 to 5

Step-by-step explanation:

To find the number of boys, take the total students and subtract the girls

72 -45 =27

We want the ratio of boys:girls

boys:girls

27:45

Divide each number by 9

27/9:45/9

3 : 5

3 0

3 years ago

Solve 9x is greater than or equal to 3

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Answer:

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Step-by-step explanation:

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4 years ago

Is 1/3, 2/3, 4/3, 8/3, 16/3 arithmetic sequence

11111nata11111 [884]

The given sequence is not arithmetic sequence

Solution:

Given sequence is:

$\frac{1}{3} , \frac{2}{3} , \frac{4}{3} , \frac{8}{3} , \frac{16}{3}$

We have to find if the above sequence is arithmetic sequence or not

An arithmetic sequence is a sequence of numbers such that the difference of any two successive members of the sequence is a constant

Here in the given sequence

$\text{ first term } = a_1 = \frac{1}{3}\\\\\text{ second term } = a_2 = \frac{2}{3}\\\\\text{ third term } = a_3 = \frac{4}{3}\\\\\text{ fourth term } = a_4 = \frac{8}{3}\\\\\text{ fifth term } = a_5 = \frac{16}{3}$