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3 years ago

Help i really need help plss

Mathematics

1 answer:

Andrei [34K]3 years ago

4 0

Answer:

Modern:عشرين

Answer:

Ancient Egypt:

Two Upside down U’s

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I have no idea how to find the values of x and y in that diagram. Can someone help?

Sauron [17]

Answer:

Multiple choice?

Step-by-step explanation:

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3 years ago

Keisha has a total of $6000 to invest in two accounts for 1 year. One account pays 5% simple interest and the other pays 6% simp

adoni [48]

Answer: He invest $2500 in account with rate of interest 5% and invest $3500 in account with 6% of interest so that the total interest earned is $335.

Step-by-step explanation:

Given: The rate of interest for account 1= 5%=0.05

The rate of interest for account 2= 6%=0.06

Let P be the Principal amount Keisha invested in the account with 5% interest .

Then the amount she will invest in account with 6% interest= 6000-P

Time = 1 year

The simple interest is given by:-

$S.I.=Prt$

Simple interest for account 1= $P(0.05)(1)=0.05P$

Simple interest for account 2= $(6000-P)(0.06)(1)=360-0.06P$

According to the question,

Total Interest =$335

$\Rightarrow0.05P+360-0.06P=335\\\Rightarrow\ -0.01P=335-360\\\Rightarrow\ -0.01P=-25\\\Righgtarrow\ P=2500$

So, he invest in account with 5% interest= $2500

He invest in account with 6 % interest=$6000-$2500=$3500

8 0

3 years ago

What is the sum of the first 5 terms of geometric series with a1=10 and r=1/5

steposvetlana [31]

$\bf \qquad \qquad \textit{sum of a finite geometric sequence}
\\\\
S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
a_1=10\\
n=5\\
r=\frac{1}{5}
\end{cases}$

$\bf S_5=10\left( \cfrac{1-\left( \frac{1}{5} \right)^5}{1-\frac{1}{5}} \right)\implies S_5=10\left( \cfrac{1-\frac{1}{3125}}{\frac{4}{5}} \right)
\\\\\\
S_5=10\left( \cfrac{\frac{3124}{3125}}{\frac{4}{5}} \right)\implies S_5=10\cdot \cfrac{781}{625}\implies S_5=\cfrac{1562}{125}$

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3 years ago

Picture with question

Kaylis [27]

11,18 the sequence is just adding 7 to the number prior

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3 years ago

Which of the following situations represents choosing a random sample? Assign each person of the population a number. Put all th

Nina [5.8K]

Answer: The first and second options are random samples.

First, assign numbers and drawing the number from a bowl would be a great way to get a random sample. Everyone has the same chance of being selected.

Second, using an alphabetical order is just like the first choice. The chances are the same for everyone.

However, in the third choice, you won't get a random sample. You will get an old and young group. Not a random group of the population.

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4 years ago