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jonny [76]
3 years ago
7

How many seconds are there in (a) one hour and thirty-five minutes and (b) one day?

Mathematics
1 answer:
sattari [20]3 years ago
6 0
There are 5700 seconds in an hour.



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Write an<br> explicit formula for An, the nth term of the sequence 7, -42, 252, ....
erik [133]

Answer:

A_n = 7(-6)^{n-1}

Step-by-step explanation:

<u>Key skills needed: Explicit formula, Geometric sequence</u>

1) This is a geometric sequence, meaning a constant (like 6 or 3.5) is being multiplied to every term. First we need to find the constant.

This can be done by doing -42 ÷ 7   or   252 ÷ -42

-42 ÷ 7 equals -6.

252 ÷ -42 also equals -6.

2) This means that constant is -6.

3) The general form for an explicit formula of a geometric sequence is:

a_n = a_1(r)^{n-1}

--> r means the constant (or common ratio) that is being multiplied.

--> a_1 means the first term

--> a_n means the "nth" numbered term (so a_3 is the 3rd term, a_{10} is the 10th term and so on).

--> n-1 is just the "n" in a_n minus 1.

4) We can use this formula to create an explicit formula for the geometric sequence in the problem.

--> r = -6 (Since we got -6 as the constant/common ratio).

--> a_1  = 7 (Since 7 is the 1st term)

This means that our formula would be --> A_n = 7(-6)^{n-1}

<em>Hope you understood and have a nice day!! :D</em>

8 0
3 years ago
Use the Law of Sines to find the measure of angle J to the nearest degree.
rjkz [21]
\bf \textit{Law of sines}&#10;\\ \quad \\&#10;\cfrac{sin(\measuredangle A)}{a}=\cfrac{sin(\measuredangle B)}{b}=\cfrac{sin(\measuredangle C)}{c}\\\\&#10;-----------------------------\\\\&#10;\cfrac{sin(J)}{9.1}=\cfrac{sin(97^o)}{11}\implies sin(J)=\cfrac{9.1\cdot sin(97^o)}{11}&#10;\\\\\\&#10;\textit{now taking }sin^{-1}\textit{ to both sides}&#10;\\\\\\&#10;sin^{-1}\left[ sin(J) \right]=sin^{-1}\left( \cfrac{9.1\cdot sin(97^o)}{11} \right)&#10;\\\\\\&#10;\measuredangle J=sin^{-1}\left( \cfrac{9.1\cdot sin(97^o)}{11} \right)
8 0
3 years ago
PLEASE HELP GIVING BRAINLIEST 25 POINTS!
tatiyna

Answer:

nearest tenth= 5.4

Step-by-step explanation:

55 ÷ 10.1= 5.44554455446.

8 0
2 years ago
Read 2 more answers
Elisa is making strawberry shortcake. One serving of strawberry shortcake requires one third cup of strawberries and one shortbr
Kisachek [45]

Given, To make a strawberry shortcake for one person, we need :

▪︎\frac{1}{3} cup of strawberry

▪︎one shortbread biscuit

Quantity of strawberries Elisa has = 3 cups

Number of shortbread biscuits she has = 12

Number of shortcakes she can make :

= \tt3 \div \frac{1}{3}

=  \tt\frac{3 \times 3}{1}

\color{plum} =\tt 9 \: people

Thus, Elisa can serve strawberry shortcakes to 9 people.

With 12 dozen shortbread biscuits she can serve 12 people.

Quantity of strawberries needed to serve 12 people :

=\tt \frac{1}{3}  \times 12

=\tt  \frac{12}{3}

\color{plum} = \tt4 \: cups

<h3>○=> Therefore :</h3>

▪︎Elisa can serve strawberry shortcakes to <u>9 people</u>.

▪︎Elisa will need <u>4 cups of strawberries</u> if she wants to use all dozen shortbread biscuits.

7 0
3 years ago
Emperor penguins defend an area around their nests. Their territory encompasses a complete circle around the nest with approxima
Cerrena [4.2K]

Answer:

The distribution that the animals will exhibit shall be uniform circular distribution.

Step-by-step explanation:

The uniform circular distribution in a circular disc of radius 'R' is given by

f(x)=\frac{2\sqrt{R^{2}-x^{2}}}{\pi R^{2} }(-R< x< +R)\\\\f(x)=0(x> +R,x< -R)

Applying values we get

f(x)=\frac{2\sqrt{0.5^{2}-x^{2}}}{\pi 0.5^{2} }(-R< x< +R)\\\\f(x)=2.54\sqrt{0.5^{2}-x^{2}}

6 0
3 years ago
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