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andrew-mc [135]
3 years ago
12

A national standardized test is graded on a scale from 1 to 5 the scores for a particular school are given below if a student Is

chosen at random what is the possibility that they scored a 4 or a 5
Mathematics
1 answer:
ra1l [238]3 years ago
6 0

Answer:

Step-by-step explanation:

The possibility of scoring a 4 is 1/5

The possibility of scoring a 5 is 1/5

The possibility of scoring either 4 or a 5 is 2/5

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PLS HELP ME QUICKLY PLSSS IM BEGGINGG​
TiliK225 [7]

Answer:

Khan Academy.

Step-by-step explanation:

You can go on khan academy and search up "GRAPHS." The videos should immediately pop up. there are also lessons if you don't want to risk getting your problem wrong. If you are still confused and do not understand please just comment and I will respond.

3 0
2 years ago
Help please I need the right answer
Nataly [62]
96000000 times bigger. in scientific notation 9.6×10 to the 7th power
5 0
3 years ago
Pls hurry i really i need to finish
Thepotemich [5.8K]
0,0
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2 years ago
Read 2 more answers
Help please ??????????????
mrs_skeptik [129]

Answer:

620.63

Step-by-step explanation:

use the formula given

r= interest rate

n= numer of times it's compounding in a year

t= time

p= principle amount

400(1+\frac{.04}{12})^{12*11}=620.628

5 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}
7 0
3 years ago
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