3 years ago

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Mathematics

1 answer:

kaheart [24]3 years ago

7 0

Answer:

winno o 6

Step-by-step explanation:

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Find the series shown.

solmaris [256]

Answer:

C $11+13+15+17+...$

Step-by-step explanation:

Consider the series

$\sum\limits_{n=3}^{\infty}(2n+5)$

The nth term of series is $a_n=2n+5$

The bottom index tells you that n starts changing from 3, so

$a_3=2\cdor 3+5=11\\ \\a_4=2\cdot 4+5=13\\ \\a_5=2\cdot 5+5=15\\ \\a_6=2\cdot 6+5=17\\ \\...$

Thus, the sum of all terms is

$11+13+15+17+...$

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3 years ago

ZABD and ZDBC are supplementary angles.

ivann1987 [24]

Answer:

Solution given:

x+100=180°{linear pair}

x=180-100

x=80

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3 years ago

A construction company needs to remove 2 1/6 tons of dirt from a construction site. They can remove 7/8 tons of dirt each hour.

raketka [301]

The answer is 4.

Hope I helped :)

3 0

3 years ago

Solve for x for each problem

Montano1993 [528]

128=11x+18.
-18. -18.

110=11x
————
11. 11

X=10

7 0

3 years ago

A friend asks to borrow $250 for 120 days and agrees to pay 2.5% simple interest every 30 days. How much interest will you earn

IgorC [24]

Answer:

We will $ 6.25 of interest every 30 days.

Step-by-step explanation:

Please notice that a month equals 30 days and that earning due to interests will be only effective after each 30th day. The simple interest formula is defined by the following formula:

$I = \frac{C\cdot r\cdot t}{100}$ (1)

Where:

$C$ - Borrowed money, measured in monetary units.

$r$ - Simple interest rate, measured in percentage.

$t$ - Number of periods, measured in months.

$I$ - Interested gain due to borrowed money, meausred in monetary units.

If we know that $C = 250$ , $r = 2.5$ and $t = 1$ , then the interest earned is:

$I = \frac{(250)\cdot (2.5)\cdot (1)}{100}$

$I = 6.25$

We will $ 6.25 of interest every 30 days.

8 0

3 years ago