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stealth61 [152]
3 years ago
12

Use the following dot plot to answer the questions.

Mathematics
1 answer:
cupoosta [38]3 years ago
8 0

Answer:

3.4

Decrease ; 3.375

Step-by-step explanation:

Mean = Σfx / Σf

Σfx = (1 * 2) + (2 * 2) + (3 * 3) + (4 * 9) = 51

Σf = 1 + 2 + 3 + 9 = 15

Mean = 51 / 15 = 3.4

If 1 more dot is added to the 3rd column:

Σfx = (1 * 2) + (2 * 2) + (3 * 4) + (4 * 9) = 54

Σf = 1 + 2 + 4 + 9 = 16

Mean = 54 / 16 = 3.375

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mash [69]

Answer:

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Step-by-step explanation:

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3 0
4 years ago
You have $250.<br> You spend 45% of that.<br> how much is left?
4vir4ik [10]

Answer:

$137.5

Step-by-step explanation:

45/100 X 250

= 11250/100 = 112.5

250-112.5 = 137.5

or

100%-45%=55%

55/100X250

=13750/100 = 137.5

4 0
3 years ago
At Fancy Fruit Distributors, Inc., the ratio of fruits to vegetables sold is 5 to 3. If 1,848 pounds of vegetables are sold, how
RoseWind [281]

Answer

616

Step-by-step explanation:

So for every 5 fruits he will sell 3 vegtables. if we divde 1848 by 3 we get 616.

3 0
3 years ago
The population of a type of local dragonfly can be found using an infinite geometric series where a1 = 65 and the common ratio i
hram777 [196]
In mathematics, number sequencing of the same pattern are called progression. There are three types of progression: arithmetic, harmonic and geometric. The pattern in arithmetic is called common difference, while the pattern in geometric is called common ratio. Harmonic progression is just the reciprocal of the arithmetic sequence.

The common ratio is denoted as r. For values of r<1, the sum of the infinite series is equal to

S∞ = A₁/(1-r), where A1 is the first term of the sequence. Substituting A₁=65 and r=1/6:

S∞ = A₁/(1-r) = 65/(1-1/6)
S∞ = 78


6 0
3 years ago
2x + 4(22 - 4y) = 22​
Dmitriy789 [7]

The answer for X is,

x = 11 - 2(22 - 4y)

And the answer for Y is,

y =  \frac{11}{2}  -  \frac{11 - x}{8}

hope it helps.

8 0
3 years ago
Read 2 more answers
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