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3 years ago

Help Please!!!! f(x)=-7x+3, D={-12,-4,3,20}

Mathematics

1 answer:

8_murik_8 [283]3 years ago

5 0

Algebra i am really bad at this so don't take my word for it i think maybe 20 SORRY IF WRONG

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Which of the following sets contains only rational numbers?

sp2606 [1]

Rational numbers are numbers which can be written as a fraction (the formula is p/q). They don't include roots we can't solve in order to get a whole number and pi.

A. 776, pi, 25.209, √9 ---> NO (because of pi)
B. 726, 7/34, 20.209, √9 ---> YES
C. √3, 7/39, 20.3, √9 ---> NO (because of √3)
D. 726, 7/34, 20.209, √5 ---> NO (because of √5

Note that √9 = 3, so it IS a rational number.

4 0

3 years ago

Read 2 more answers

3/5n+15=10+2/5n what is n

Nutka1998 [239]

$\textsf{Hey there!}$

$\mathsf{\dfrac{3}{5}n +15=10+\dfrac{2}{5}n}$

$\mathsf{\bf{SUBTRACT}\ \mathsf{by\ \dfrac{2}{5}n\ from\ both\ of\ your\ sides}}$

$\mathsf{Like: \dfrac{3}{5}n+15-\dfrac{2}{5}n=\dfrac{2}{5}n+10-\dfrac{2}{5}n}$

$\mathsf{\bf{CANCEL: \dfrac{3}{5}+\dfrac{2}{5}}}\textsf{out\ because that gives you\ 1}$

$\textsf{Solve\ the set we have left over}$

$\mathsf{Our\ new\ equation\ becomes: \dfrac{1}{5}n+15=10}$

$\mathsf{\bf{SUBTRACT}}\textsf{ by 15 on both of your sides}$

$\mathsf{\dfrac{1}{5}n+15-15=10-15}$

$\mathsf{Cancel\ out: 15-15\ because\ that\gives\ you\ 0 }$

$\mathsf{Keep: 10-15\ because\ it\ helps\ us\ solve\ for\ your\ n }$

$\mathsf{10-15=-5}$

$\mathsf{New\ equation: \dfrac{1}{5}n=-5}$

$\mathsf{\bf{MULTIPLY}\mathsf{\ both\ sides\ by\ 5}}$

$\mathsf{\dfrac{1}{5}n\times5=5\times-5}$

$\mathsf{Cancel\ out\ \dfrac{1}{5}\times5 \ because \ it \ gives \ us \ 1}$ $\mathsf{Keep: 5\times -5\ because\ it\gives\ us\ the\ value\ of\ your\ n}$

$\mathsf{n =5\times-5}\\\mathsf{5\times-5 = -25}$

$\textsf{Thus, \underline{\bf{n = -25}}}\checkmark$

$\boxed{\boxed{\mathsf{Thus,\ your\ answer\ is: \boxed{\boxed{\bf{n =-25}}}}}}\checkmark$

$\textsf{Good luck on your assignment and enjoy your day!}$

~ $\frak{LoveYourselfFirst:)}$

7 0

3 years ago

1,8 О, ОР 81, 817 0,00 3 16 3 3 5 0 3

Tema [17]

Answer:

G o o g l e >:>

Step-by-step explanation:

8 0

3 years ago

Write a function of the geometric sequence with a starting term of 8 and a common ratio of 2. Find the fourth term.

Andreas93 [3]

The expression that represents well the geometric sequence is $f(n) = 8 \cdot 2^{n-1}$ and the value of the fourth term is 64. (Correct choice: B)

<h3>How to analyze geometric sequences</h3>

Geometric sequences are exponential expressions with discrete domain, whose form is presented and explained below:

$f(n) = a \cdot r^{n-1}$ , where a, r are real numbers and n is a natural number. (1)

Where:

Value of the starting term.
Common ratio of the series.

According to the statement, we know that the first term of the geometric sequence is 8 and between any two consecutive terms there is a common ratio of 2. If we know that a = 8, r = 2 and n = 4, then the fourth term of the series by means of (1) is:

$f(4) = 8 \cdot 2^{4-1}$

f(4) = 8 · 8

f(4) = 64

The expression that represents the geometric sequence is $f(n) = 8 \cdot 2^{n-1}$ and the value of the fourth term is 64.

To learn more on geometric sequences: brainly.com/question/11266123

#SPJ1

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2 years ago

Helppppp pleaseeeeeee?????

Sloan [31]

Answer:

It is A, i hope that answers your question

Step-by-step explanation:

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4 years ago