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prisoha [69]
1 year ago
10

Water is added or drained from a tank each day. The first day, 9/10 of a gallon is added to the empty tank. The second day, 7/10

of a gallon is drained from the tank. The third day, 8/10 of a gallon is added to the tank. The fourth day, 610 of a gallon is drained from the tank. The amount of water in the tank after 15 days is given by
9/10+(−7/10)+8/10+(−6/10)+⋯+3/10+(−1/10)+2/10.

How much water is in the tank after 15 days? Write your answer as a decimal.
Mathematics
2 answers:
lorasvet [3.4K]1 year ago
4 0

Answer:

.8

Step-by-step explanation:

9/10+(−7/10)+8/10+(−6/10)+3/10+(−1/10)+2/10.

Luden [163]1 year ago
3 0

Answer:

0.8

Step-by-step explanation:

9/10 + (−7/10) + 8/10 + (−6/10) + 3/10 + (−1/10) + 2/10= 0.8

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What expression has a negative value?<br>7+3(-4)(2)<br>-2[12/(-3)]<br>(15-7)-(9/3)<br>-5[7+(-14)]-30
Soloha48 [4]

Answer:

7+3(-4)(2)= -17

Step-by-step explanation:

7+3(-4)(2)

(-4)*2=-8

∴ 7+3(-8)= 7-24

= -17

8 0
3 years ago
Please help me this is so annoying and I need it done really fast so if you could just put an quick answer no explanation just t
pashok25 [27]

Answer:

1. 4 and 1/6

2. 2 and 11/12

Explanation:

convert to improper fraction: 11/2 - 4/3

same denominator: 33/6 - 8/6

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6 0
2 years ago
Which of the numbers below could be terms in the sequence an=4n-7 A)29 B)21 C)20 D)28
natali 33 [55]

Answer:

A)29 and B) 21,

Step-by-step explanation:

First,in the sequencea_n=4n-7 , the parameter n must to be a integer.

Second, we need to solve the equations by  n.

n=(a_n+7)/4

All the option in the problem represent an a_n

Then, we need to prove all number in the options, if the result is a integer number, this option can be part of the sequence.

For A)

n=(29+7)/4=9\\

For B)

n=(21+7)/4=7\\

For C)

n=(20+7)/4=6.75\\

For D)

n=(28+7)/4=8.75\\

Only A) and B)  only A and B meet the requirement

4 0
2 years ago
Diego has written a feature story about a drumming circle. What should he include in his visual presentation to interest the aud
Art [367]

Answer:

A video of a drumming session.

7 0
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40% of students on a field trip love the museum. If there are 20 students on the field trip, how many love the museum??
MariettaO [177]
Since there are 20 students on the field trip. Then 20 is the 100% total. Thus, to find how many people love the museum, we can simply multiply the total number of people by the percentage of interest, namely 40%

20*0.4 = 8
So, 8 people love the museum.
5 0
3 years ago
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