All categories

3 years ago

Please help me with this, its confusing

Mathematics

1 answer:

ser-zykov [4K]3 years ago

3 0

I can’t even read it ...
step by step explanation:

You might be interested in

PLEASE HELP ILL GIVE YOU 50 POINTS

Stella [2.4K]

Answer:

Step-by-step explanation:

D.closed series circuit

3 0

3 years ago

The radius of a circle is 42 inches. What is the circle's area?<br> Use 3.14 for .

Mazyrski [523]

Answer:

A =5538.96 in^2

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

We know the radius is 42 and pi is approximated by 3.14

A = 3.14 * 42^2

A =5538.96 in^2

3 0

3 years ago

Read 2 more answers

How do you graph lines using intercepts<br> Ex. 3y= 1/2x-2 (How would you graph that?)

scZoUnD [109]

Read this article https://weteachscience.org/mentoring/resources/lesson-plans/algebra-1-%E2%80%93-how-to-graph-a-linea...

6 0

3 years ago

Find the value of x if -x+4=-9

vladimir1956 [14]

Answer:

-13

Step-by-step explanation:

x+4=-9

-4 -4

x= -13

If you did 9+4 you'd get 13. But instead its negative because x is negative.

6 0

3 years ago

What is a30 for the arithmetic sequence presented in the table below?

Xelga [282]

$\bf \begin{array}{ll}
n&a_n\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
6&50\\
7&50+d\\
8&50+d+d\\
9&50+d+d+d\\
10&50+d+d+d+d\\
11&50+d+d+d+d+d\\
&35
\end{array}
\\\\\\
50+5d=35\implies 5d=-15\implies d=\cfrac{-15}{5}\implies d=-3
\\\\\\
\textit{we know d = -3, and we know }a_{11}=35\qquad thus$

$\bf n^{th}\textit{ term of an arithmetic sequence}\\\\
a_n=a_1+(n-1)d\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
d=\textit{common difference}\\
----------\\
d=-3\\
n=11\\
a_{11}=35
\end{cases}
\\\\\\
a_{11}=a_1+(11-1)(-3)\implies 35=a_1+(11-1)(-3)
\\\\\\
35=a_1-30\implies 65=a_1$

now we know what "d" is, and what a₁ is, so let's check the 30th term,

$\bf n^{th}\textit{ term of an arithmetic sequence}\\\\
a_n=a_1+(n-1)d\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
d=\textit{common difference}\\
----------\\
d=-3\\
n=30\\
a_{1}=65
\end{cases}
\\\\\\
a_{30}=65+(30-1)(-3)\implies a_{30}=65-87\implies a_{30}=-22$

8 0

4 years ago