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REY [17]
2 years ago
8

The mean length of 10 childrens' index finger is 12.6cm.

Mathematics
1 answer:
ICE Princess25 [194]2 years ago
5 0

Get total lengths by multiplying:

10 x 12.6 = 126

6 x 16.1 = 96.6

Add the total lengths together and divide by 16:

126 + 96.6 = 222.6


222.6 / 16 = 13.9125

Rounded to 2 decimal places = 13.91


answer: 13.91

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Answer:

244,160

Step-by-step explanation:

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3 years ago
What's the simplified form of 2x + 3 – X + 5?<br> A.X-2<br> B.X-8<br> C. x+8<br> D. 3x + 8
allochka39001 [22]

Answer:

C

Step-by-step explanation:

Group like terms

= 2x - x +3 +5

Add the similar 'elements'

= x + 3 + 5

Add the numbers

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8 0
3 years ago
You know that there is a strong correlation between the consumption of ice cream and body weight. The Pearson's r = 0.78. You al
Naddika [18.5K]

Answer:

y = 7.8x + 26

Step-by-step explanation:

Given the following :

Pearson's r = 0.78

Average consumption of ice cream = 5 grams per week (m) with Standard deviation (sd) = 1.5 grams

Average weight = 65 kg with standard deviation of 15kg

Formular for the regression line :

General regression formula :

y = mx + c

y = predicted variable ; m = slope or gradient ; x = predictor variable ; c = intercept

Gradient (m) = change in y / change in x

m = (sd y / sd x) * r

m = (sd weight / sd ice cream) × r

m = (15 / 1.5) × r

m = 10 × 0.78 = 7.8

Intercept:

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65 - [7.8 × 5]

65 - 39 = 26

Hence,

y = 7.8x + 26

5 0
3 years ago
What is the answer for “round 756,04 to the nearest tenth
777dan777 [17]
If you mean 756.04, the answer is 756.0. 4 is closer to 0.

5 Or More, raise the score
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7 0
3 years ago
Sqr root 8+3 Sqr root 2+ Sqr root 32 simplest form
Kisachek [45]

Answer:

<u>9\sqrt{2} </u>

Step-by-step explanation:

The given question is :

\sqrt{8} +3\sqrt{2} +\sqrt{32}

8 = 4 * 2

32 = 16 * 2

\sqrt{8} =\sqrt{4*2} = 2\sqrt{2} \\\sqrt{32} =\sqrt{16*2} =4\sqrt{2}

∴ \sqrt{8} +3\sqrt{2} +\sqrt{32}

= 2\sqrt{2} +3\sqrt{2} +4\sqrt{2}

= 9\sqrt{2}

6 0
3 years ago
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