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labwork [276]
3 years ago
8

Can someone help me? I am struggling and I would be so happy if any of you helped me. Thank you for your help!

Mathematics
1 answer:
mash [69]3 years ago
8 0

Answer:

Mean = 52

Standard Deviation = 13.64

Step-by-step explanation:

mean = 260/5

= 52

Standard Deviation = \sqrt{\frac{930}{5} } = 13.64

I wasn't sure about my answer so used the Gauthmath app

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What mixed number is 3/8 of 100
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3/8 0f 100
100 / 8 = 12.5
Now, let's multiply this by 3 to be able to get the value
=> 12.5 * 3 = 37.5 is the value of 3/8 of 100.
This is a mixed number because its a combination of whole and decimal numbers.
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What is the doubling time?
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2 years ago
In ΔOPQ, o = 9.2 cm, p = 2.4 cm and ∠Q=37°. Find the length of q, to the nearest 10th of a centimeter.
storchak [24]

The length of q, to the nearest 10th of a centimeter is 7.6 cm.

Given in question,

In ΔOPQ,

o = 9.2 cm

p = 2.4 cm

∠Q = 37°

Cosine formula ⇒ cos θ = \frac{o^{2}+p^{2}-q^{2}  }{2op}

Putting the values in equation,

       cos 37 = \frac{(9.2)^{2}+(2.4)^{2}-q^{2}  }{2*9.2*2.4}

         0.799 = \frac{84.64 + 5.76-q^{2} }{44.16}

0.799*44.16 = 90.4 - q^{2}

         32.28 = 90.4 - q^{2}

                q^{2} = 90.4 - 32.28

                q^{2} = 58.12

                 q = \sqrt{58.12}

                 q = 7.63

q = 7.6 cm (to nearest 10th)

Hence, length of q is 7.6 cm.

Learn more about length on:

brainly.com/question/8552546

#SPJ1

3 0
2 years ago
What is the area of a rectangle of 5/9 m in length and 7/8 m in width
Andru [333]

Answer:

35/72 m^2

Step-by-step explanation:

Rectangle Formula: l*w=Area

Switch the variables with the numbers given:

\frac{5}{9} *\frac{7}{8} =Area

Multiply the top and bottom:

5*7 = 35

9*8 = 72

35/72 = Area

6 0
3 years ago
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