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Softa [21]
3 years ago
7

1/2 •x=1/2•7 what is the property

Mathematics
1 answer:
AleksandrR [38]3 years ago
3 0
Distributive property
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Find the sum of the first 30 terms of the sequence. a_(n)=4n+1
oksian1 [2.3K]
We know that
a(n)=4n+1
To find the sum of the first n<span> terms of an arithmetic series
use the formula
</span><span><span>Sn</span>=<span>n(<span>a1</span> + <span>an</span>)/2
</span></span>a1--------------> is the first term
an--------------> is the last term
n--------------- > <span>is the number of terms
</span>we have that
a1------------> 4*(1)+1=5
a30----------> 4*(30)+1=121
n------------- > 30
S30=30*(5 + 121)/2=1890

the answer is 1890


7 0
2 years ago
If a point (-3/5,b) is on the graph of the equation 2x+3y=6 and also on the graph of y=x+3, what is the value of b?
AleksAgata [21]
Since the point satisfies the equation
&nbsp; y = x +3
you have
&nbsp; b = (-3/5) +3 = 12/5 . . . . . . . matches A. 12/5
7 0
3 years ago
If x = y, find the value of 8 + 5(x - y)
uranmaximum [27]

Answer:

=8

Step-by-step explanation:

Evaluate for x=y,y=x

8+5(x−x)

8+5(x−x)

3 0
2 years ago
X - x-2/6 = x-7/3 + 2/3
elena-s [515]
X-x-2/6=x-7/3+2/3
-2/6+7/3-2/3=x
x= -2/6+5/3
x= 8/6
x= 4/3
3 0
2 years ago
PLEASE HELP ME I AM DESPERATE
Paladinen [302]

Answer: B 5+5=10+4+4+4=12+3 10+12+3 25 lol

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
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