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Tpy6a [65]
3 years ago
12

Which of the following is the solution of One-fourth x + 5 = 7?

Mathematics
1 answer:
True [87]3 years ago
8 0

Answer:

x/4 + 5 = 7

      -5    -5

x/4 = 2

*4     *4

x=8

Step-by-step explanation:

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Find the mean, median, and mode of each set of data.
julia-pushkina [17]

Answer:

Mean: 915.6

Mode: (there is none)

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Step-by-step explanation:

8 0
3 years ago
circle terms and simplify each of the following expressions. a. 3+1 *4+(-7) b. 50=3(-10)=2(-20) c.4+(-50)*2 d. (4+(-170))(5+(-4)
zhannawk [14.2K]

A. 3+4-7

0

B. 50=-30=-40

50=/=-30=/=-20

No solution

C. 4+-100

-96

D. (-166)(1)

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I obviously cannot circle terms and sadly the attachments don’t work for me but each term like each section

8 0
3 years ago
*FIRST PERSON TO GET IT RIGHT AND ANSWER FIRST GETS BRAINLIEST*
Anna71 [15]

Answer:

23 starfish, 7 octopi

Step-by-step explanation:

x=starfish

y=octopi

x+y=30

5x+8y=171

-5(x+y=30)

5x+8y=171

-5x-5y=-150

5x+8y=171

3y= 21

y=7

x+7=30

x=23

23 starfish, 7 octopi

3 0
2 years ago
A.Find a formula for
Vlada [557]

a. Notice that

1/(1*2) = 1/2 = 1 - 1/2

1/(2*3) = 1/6 = 1/2 - 1/3

1/(3*4) = 1/12 = 1/3 - 1/4

and so on, which suggests the n-th term of the sum can be written as

\dfrac1{n(n+1)}=\dfrac1n-\dfrac1{n+1}

Then the sum itself is telescoping:

\dfrac1{1\cdot2}+\dfrac1{2\cdot3}+\dfrac1{3\cdot4}+\cdots+\dfrac1{n(n+1)}

=\left(1-\dfrac12\right)+\left(\dfrac12-\dfrac13\right)+\left(\dfrac13-\dfrac14\right)+\cdots+\left(\dfrac1n-\dfrac1{n+1}\right)

=1-\dfrac1{n+1}

b. The proof is trivial:

\dfrac1n-\dfrac1{n+1}=\dfrac{n+1}{n(n+1)}-\dfrac n{n(n+1)}=\dfrac{n+1-n}{n(n+1)}=\dfrac n{n+1}

so the formula found in (a) is correct.

5 0
3 years ago
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