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3 years ago

6

Make the number 18 using six "1"s.

1 answer:

natka813 [3]3 years ago

4 0

Answer:

(11-1-1)(1+1)

Step-by-step explanation:

revised

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Helppppppppppp. Pleaseeeeeeeeeeeeeeeeeeeeeeeeeeee

olga55 [171]

Answer:

7

Step-by-step explanation:

form a proportion

12/2=42/x

cross multiply

12x=84

x=7

6 0

3 years ago

Read 2 more answers

Find the inverse of 2∛(x+2)

Artemon [7]

$y=2\sqrt[3]{x+2}\ \ \ |divide\ both\ sides\ by\ 2\\\\\sqrt[3]{x+2}=\dfrac{y}{2}\to x+2=\left(\frac{y}{2}\right)^3\ \ \ |subtract\ 2\ from\ both\ sides\\\\x=\dfrac{y^3}{2^3}-2\\\\x=\dfrac{1}{8}y^3-2\\\\\boxed{f(x)=2\sqrt[3]{x+2}\to f^{-1}(x)=\frac{1}{8}y^3-2}$

5 0

3 years ago

Time sensitive question. Find the sum of the first 26 terms of an arithmetic series whose first term is 7 and 26th term is 93.

lisabon 2012 [21]

ANSWER

$S_{26}=1300$

EXPLANATION

The sum of an arithmetic sequence whose first term and last terms are known is calculated using

$S_{n}= \frac{n}{2} (a + l)$

From the given information, the first term of the series is

$a = 7$

and the last term of the series is

$l = 93$

The sum of the first 26 terms is

$S_{26}= \frac{26}{2} (7 + 93)$

$S_{26}= 13 (100)$

$S_{26}=1300$

7 0

3 years ago

Mary has 12 video games. She purchases five new video games each month as part of a video game club.

Oxana [17]

Answer:

The answer to your question is: V = 12 + 5n

Step-by-step explanation:

Data

Video games right now = 12

She purchases 5 video games each month

Equation = ?

# of video games in n month = V

Process

- Consider the initial amount of video games

V = 12

- Now, consider the number of video games the buys each month and the months

5n

- Finally, join both terms

V = 12 + 5n

8 0

3 years ago

G(-4)=3(-4)+4<br><br> Find g(-4)

soldier1979 [14.2K]

G(x) = 3x + 4
g(-4) = 3(-4) + 4
g(-4) = -12 + 4
g(-4) = -8

6 0

3 years ago