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polet [3.4K]
3 years ago
11

9 (2n + 1) using the distributive property

Mathematics
2 answers:
FinnZ [79.3K]3 years ago
8 0
The answer is 18n + 9
vivado [14]3 years ago
5 0
9(2n)+ 9(1) =
18n + 9
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The gym has a total of 25 treadmills and stationary bikes. there are seven more stationary bikes than treadmills.
Rudik [331]

The system of equations is t+b=25\\b=t+7

Step-by-step explanation:

We can answer this question as follows.

First of all, we call:

t = number of treadmills

b = number of stationary bikes

The two conditions that we have can be translated into equations as follows:

- The gym has a total of 25 treadmills and stationary bikes:

t+b=25

- There are seven more stationary bikes than treadmills:

b=t+7

So the system of equations to solve is

t+b=25\\b=t+7

We now solve it in the following way: first, we rewrite the second equation by bringing t on the left side,

t+b=25\\b-t=7

Now we add the 1st equation to the 2nd equation:

(t+b)+(b-t)=25+7\\t+b+b-t=32\\2b=32\\b=\frac{32}{2}=16

And therefore,

t+b=25\\t+16=25\\t=25-16=9

So, there are 16 stationary bikes and 9 treadmills.

Learn more about systems of equations:

brainly.com/question/13168205

brainly.com/question/3739260

#LearnwithBrainly

3 0
3 years ago
Solve for the following variables
fgiga [73]

Answer: not 100 percent sure but i think x=37 z=110 y=33

Step-by-step explanation:

8 0
3 years ago
The first term of a geometric sequence is 7, and the ratio (multiplier) is 3. what is the sum of the first 5 terms of the sequen
Anni [7]
Hello,

1)
a_{1}=7
a_{2}=7*3
a_{3}=7*3^2

a_{n}=7*3^{n-1}

s=a_{1}+a_{2}+a_{3}+a_{4}+a_{5}=7*(1+3^1+3^2+3^3+3^4)
=7*\frac{3^{5}-1}{3-1}
=7*242/2=847

2)
b_{8}=6*8^{8-1}=12582912




















4 0
3 years ago
Plss show explanation! what is 1/4 + 1/3 + 11/12
maks197457 [2]

6 1/2

First you find a common denominator. 1/4 = 3/12 and 1/3 = 4/12.

3/12 + 4/12 + 11/12 = 18/12.

18/12 = 6 6/12 = 6 1/2

3 0
3 years ago
Read 2 more answers
PLEASE HELP!!!!! THANK YOU!!!!!
scZoUnD [109]

Answer:

The slope is 2

Step-by-step explanation:

Formula: y2-y1/x2-x1= 11-5/7-4 = 6/3=2

7 0
3 years ago
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