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3 years ago

19 points if uu help meeee

Mathematics

2 answers:

Sindrei [870]3 years ago

8 0

Answer:

Step-by-step explanation:

Answer is sixteen. A squared plus B squared equals C squared.

A=15sq

B=6sq

C=Xsq

A=225

B=36

C=x

226 + 36 =261

261 = 16sq...roughly...

Answer is 16.

Hope this helps! I hope you do well on that test, we believe in you!

DochEvi [55]3 years ago

4 0

Answer:

It is 21

Step-by-step explanation:

It is not hard all you got to do is 25+6=21 hope it helps plz Mark me brainlest :)

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Use the graph of the function f(x) to complete the statements below.

vovangra [49]

The answer is f12 submit 8765

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2 years ago

What is the 100th term if the sequence? 5 ,1 ,-3,-7

wel

5 ,1 ,-3,-7 ? what the dickens is going on?

notice, from 5 to 1, is really -4 units,

from 1 to -3, is -4 units as well, 1 -4 = -3 and so on.

so, to get the next term's value, you simply subtract 4 from the current one, namely -4 is the "common difference".

and we also know the first term is 5, ok... then

 $\bf n^{th}\textit{ term of an arithmetic sequence}\\\\
a_n=a_1+(n-1)d\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
d=\textit{common difference}\\
----------\\
d=-4\\
a_1=5\\
n=100
\end{cases}
\\\\\\
a_{100}=5+(100-1)(-4)\implies a_{100}=5+(99)(-4)
\\\\\\
a_{100}=5-396\implies a_{100}=-391$

3 0

3 years ago

Two cars start at the same time, but travel in opposite directions. One car's average speed is 80 miles per hour (mph). At the e

Alinara [238K]

Answer:

50 mph

Step-by-step explanation:

80 mph x 4 = 320 miles. so the first car went 320 miles

520 miles apart- 320 = 200 I subtracted the 320 miles so i can figure out how far the other car went.

200 / 4 hours = 50 mph

6 0

3 years ago

What is the 9th term of the geometric sequence 4, −20, 100, …?

sveta [45]

First, we are going to find the common ratio of our geometric sequence using the formula: $r= \frac{a_{n}}{a_{n-1}}$ . For our sequence, we can infer that $a_{n}=-20$ and $a_{n-1}=4$ . So lets replace those values in our formula:
$r= \frac{-20}{4}$
$r=-5$

Now that we have the common ratio, lets find the explicit formula of our sequence. To do that we are going to use the formula: $a_{n}=a_{1}*r^{n-1}$ . We know that $a_{1}=4$ ; we also know for our previous calculation that $r=-5$ . So lets replace those values in our formula:
$a_{n}=4*(-5)^{n-1}$

Finally, to find the 9th therm in our sequence, we just need to replace $n$ with 9 in our explicit formula:
$a_{9}=4*(-5)^{9-1}$
$a_{9}=4*(-5)^{8}$
$a_{9}=1562500$

We can conclude that the 9th term in our geometric sequence is 1,562,500

4 0

3 years ago

When testing for current in a cable with eleven color-coded wires, the author used a meter to test four wires at a time. How ma

Sav [38]

Answer:

The number of tests required is 330.

Step-by-step explanation:

We have to find the total number of combinations of four wires.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.