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Bumek [7]
4 years ago
7

I do not understand this/ help me answer these

Mathematics
2 answers:
Eddi Din [679]4 years ago
8 0

Answer:

  1. -6b -6c
  2. 3w -12
  3. 2x -24
  4. 6 + 3r
  5. 8y - 16x

Step-by-step explanation:

Zepler [3.9K]4 years ago
7 0
You distribute what’s in front of the parenthesis to all of them for example -6(b+c) would be -6b-c
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74y−8−78y=−4y−8 how many solutions
Vera_Pavlovna [14]

Answer:

there is an  infinet amount of answers.

Step-by-step explanation:

4 0
3 years ago
I need help please and can you explain <br> ANSWER ASAP!!!!
Andru [333]

The app uses 2^28 bytes.

Step-by-step explanation:

  • Step 1: Given total storage used by the app = 4^4 Megabytes. Also, 1 MB = 2^20 bytes. Find total storage used by app in bytes.

⇒ 4^4 × 2^20 = (2²)^4 × 2^20 = 2^8 × 2^20

                       = 2^8+20

                       = 2^28 bytes (using the law of exponents a^m × a^n = a^m+n)

5 0
3 years ago
For the following telescoping series, find a formula for the nth term of the sequence of partial sums
gtnhenbr [62]

I'm guessing the sum is supposed to be

\displaystyle\sum_{k=1}^\infty\frac{10}{(5k-1)(5k+4)}

Split the summand into partial fractions:

\dfrac1{(5k-1)(5k+4)}=\dfrac a{5k-1}+\dfrac b{5k+4}

1=a(5k+4)+b(5k-1)

If k=-\frac45, then

1=b(-4-1)\implies b=-\frac15

If k=\frac15, then

1=a(1+4)\implies a=\frac15

This means

\dfrac{10}{(5k-1)(5k+4)}=\dfrac2{5k-1}-\dfrac2{5k+4}

Consider the nth partial sum of the series:

S_n=2\left(\dfrac14-\dfrac19\right)+2\left(\dfrac19-\dfrac1{14}\right)+2\left(\dfrac1{14}-\dfrac1{19}\right)+\cdots+2\left(\dfrac1{5n-1}-\dfrac1{5n+4}\right)

The sum telescopes so that

S_n=\dfrac2{14}-\dfrac2{5n+4}

and as n\to\infty, the second term vanishes and leaves us with

\displaystyle\sum_{k=1}^\infty\frac{10}{(5k-1)(5k+4)}=\lim_{n\to\infty}S_n=\frac17

7 0
3 years ago
I need help on this math plz help
Inessa [10]

Answer:

1250 pounds

Step-by-step explanation:

1625=x+30%

1625=1.3x

x=1250

6 0
3 years ago
Read 2 more answers
What type of line is the graph of y = 7?<br><br> Vertical<br> Horizontal<br> Rising<br> Falling
Ksivusya [100]
The line y = 7 would just be a Horizontal line on 7
Basically, you go up 7 units then draw a straight horizontal line across
Hope this helps!
5 0
4 years ago
Read 2 more answers
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