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Mashcka [7]
3 years ago
10

When a jug is half- filled with marbles, it weighs 2.6 kg. The jug weighs 4 kg when it is full. Find the weight of the empty jug

.
Mathematics
2 answers:
baherus [9]3 years ago
5 0

the difference between a full jug and a jug that is half full will give us the weight of the marbles only in a half full jug:
4 - 2.6 = 1.4 kg

In a half full jug that weighs 2.6 kg, the weight of the marbles is 1.4 kg 
the weight of the jug = 2.6 - 1.4 = 1.2 kg

Novosadov [1.4K]3 years ago
5 0

Answer:

The jug weights empty 1.2 kg.

Step-by-step explanation:

In this case we can define two equations based on the description to find the weight of the empty jug, this is:

Eq. 1: Jug+\frac{1}{2} Marbles=2.6

Eq. 2: Jug+Marbles=4

Now putting the Eq. 2 in the Eq. 1 we have:

Jug+\frac{1}{2} (4-Jug)=2.6

Clearing Jug:

\frac{1}{2}Jug=2.6-2

Jug=0.6*2

Jug=1.2

The jug weights empty 1.2 kg.

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1,2,3,5

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According to a certain website, wine critics generally use a wine-scoring scale to communicate their opinions on the relative qu
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Answer:

\bar x = 82

\sigma =  9.64

Step-by-step explanation:

Given

n = 12

87\ 91\ 86\ 82\ 72\ 91\ 60\ 77\ 80\ 79\ 83\ 96

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To do this, we simply calculate the sample mean

\bar x = \frac{\sum x}{n}

\bar x = \frac{87+ 91+ 86+ 82+72+91+60+77+80+79+83+96}{12}

\bar x = \frac{984}{12}

\bar x = 82

Solving (b); Point estimate of standard deviation

To do this, we simply calculate the sample standard deviation

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\sigma = \sqrt\frac{(87-82)^2+ (91-82)^2+ ....+ (79-82)^2+ (83-82)^2+ (96-82)^2}{12-1}

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3 0
3 years ago
Help me with a algebra word problem
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M is the midpoint of AB.<br> AM = = 4x - 8<br> MB =<br> 5x-3/3<br> Find x and AB
marusya05 [52]
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steps

since m is a midpoint, AM and MB are congruent so you set the two equations equal to each other, 4x-9=5x-3/3( is this a typo? bc 3/3 is 1)
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3 years ago
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aalyn [17]

Answer:

Answer 1: <u>$6,289</u>

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Step-by-step explanation:

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a(10)=10,000(1+.05)^10

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A(t)=pe^rt=a(10)=10,000e^(.05)(10)=16,487-10,000=6487

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