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natita [175]
3 years ago
13

Reduce to simplest form. -5/8 + (-8/5) Need this ASAP (khan academy)

Mathematics
2 answers:
alina1380 [7]3 years ago
7 0

Here is an attachment with the answer. I hope this helps.

coldgirl [10]3 years ago
6 0

Answer:

the answer is 2.225.........

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Answer:

What statements?

Step-by-step explanation:

7 0
3 years ago
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4x-10=2 <br> Solve and find the justification <br> Help!! Hurry!!
astra-53 [7]

4x-10=2

add 10 to each side   (addition property of equality)

4x-10+10=2+10

simplify

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divide by 4  (division property of equality)

4x/4 = 12/4

simplify

x=3

4 0
3 years ago
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Find the sum of the arithmetic sequence. 3,5,7,9,....,21
inysia [295]
The sum of any arithmetic sequence is the average of the first and last terms times the number of terms.

Any term in an arithmetic sequence is:

a(n)=a+d(n-1), where a=initial term, d=common difference, n=term number

So the first term is a, and the last term is a+d(n-1) so the sum can be expressed as:

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s(n)=(2a+dn-d)(n/2)

s(n)=(2an+dn^2-dn)/2

However we need to know how many terms are in the sequence.

a(n)=a+d(n-1), and we know a=3 and d=2 and a(n)=21 so

21=3+2(n-1)

18=2(n-1)

9=n-1

10=n so there are 10 terms in the sequence.

s(n)=(2an+dn^2-dn)/2, becomes, a=3, d=2, n=10

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s(10)=(60+200-20)/2

s(10)=240/2

s(10)=120
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3 years ago
I am a solid figure with two congruent polygons that are bases , connected with lateral faces that are rectangles.
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(basically like a 3D hexagon)
~Hope this helped
*hope images helped* 
~~~~~~~~~~~~~~~~
Two of the images are rectangles; in which is an answer you can also put.
~~~~~~~~~~~~~~~~

3 0
3 years ago
I need the 5 summary method for <br> 8, 10, 11, 11, 19, 21, 25, 27, 28, 34, 34, and 38
Masja [62]
Minimum - 8
First Quartile - 11
Median - 23
Third Quartile - 34
Max - 38

Hope this helps!
3 0
3 years ago
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