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liraira [26]
3 years ago
15

Pleaseeee help me with this anyone

Mathematics
1 answer:
Ede4ka [16]3 years ago
3 0

Answer:

scale factor = \frac{14}{5}

Step-by-step explanation:

the scale factor is the ratio of corresponding sides , image B to image A

scale factor = \frac{7}{2.5} = \frac{7(2)}{2.5(2)} = \frac{14}{5}

You might be interested in
Please help I don’t really understand how to go about it.
Airida [17]
\bf \textit{sum of an arithmetic sequence}
\\\\
S_n=\cfrac{n(a_1+a_n)}{2}\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
----------\\
S_n=795\\
a_1=102\\
a_n=57
\end{cases}
\\\\\\
795=\cfrac{n(102+57)}{2}\implies 1590=159n
\\\\\\
\cfrac{1590}{159}=n\implies 10=n\\\\
-------------------------------

so the nth term is really the 10th term, and we know that's 57, 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}\\
----------\\
n=10\\
a_{10}=57\\
a_1=102
\end{cases}
\\\\\\
57=102+(10-1)d\implies 57=102+9d\implies -45=9d
\\\\\\
\cfrac{-45}{9}=d\implies -5=d

so, that's the common difference... .so you'd surely know what the 3rd term is, notice the first one is 102.
3 0
3 years ago
Mapiya writes a series of novels. she earned $75000 for the first book, and her cumulative earnings double with each sequel that
SashulF [63]

Answer:

E(n)=$75000 *2^n

Step-by-step explanation:

If we start with the initial value,   $75,000  , and keep multiplying by   2  , this function gives us Mapiya's cumulative earnings when she has written   n   sequels.

E(n)=75000⋅2

n


5 0
3 years ago
Read 2 more answers
A rectangular prism has a volume of 104 cubic inches. The prism has a height of 2 inches and a width of 4 inches.
nydimaria [60]

Answer:

13 inches

Step-by-step explanation:

the volume of a prism is (L)(w)(h)

height=2

width=4

length=?

2(4)(x)=104

8x=104

x=13 inches.

7 0
3 years ago
Read 2 more answers
Adrienne and Suki simplified the expression –8 – (–6). Whose answer is correct? Explain where the error was made.
bonufazy [111]
<h2>mark me as brainliest please</h2>

-2 and suki was right aDriene was wrong as he added

Step-by-step explanation:

-8-(-6)

-8+6        (it becomes positive 6 as a negative and negative give u a positive )

= -2

7 0
3 years ago
Read 2 more answers
Can anyone help me with these 2 problems?
Westkost [7]

A)

10.00 - 3.55 = 6.45 back

a $5 bill and a $1 dollar bill = $6

a quarter and 2 dimes = 0.45

 so 2 bills and 3 coins


B) 120 x 4 = 480 minutes

480/60 = 8 hours

8 0
3 years ago
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