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Blababa [14]
2 years ago
13

Please Help!!

Mathematics
1 answer:
STALIN [3.7K]2 years ago
7 0
Khhdhdbdjfbdbdjnfbfbfj please mark Brainly
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Plzzz helpp find the length of arc AD. use 3.14 for pi. round to the nearest tenth
solniwko [45]

Answer:

15.7 cm

Step-by-step explanation:

Angle AD = 180°- 66.4°= 113.6° (considering 2x90°=180° on opposite side)

P= 2*3.14*7.9=49.6 cm

Arc AD= 49.6*113.6°/360°= 15.7 cm

6 0
3 years ago
Which fraction is equivalent
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The answer would be d
3 0
1 year ago
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A circular diesel fuel spill is increasing in diameter at a rate of 400 feet per hour. The function for the increase in diameter
zysi [14]

Answer: g(f(h)) = pie(200h)^2

Step-by-step explanation:

8 0
4 years ago
Enguun earns $17 per hour tutoring student athletes at Brooklyn University. a) If Enguun tutored for 12 hours this month, how mu
Sati [7]

Answer: a) $204 b) $331.50

Step-by-step explanation: a) 17 x 12 b) 17 x 19.5 (Sorry, I can't do a diagram, you have to do it by yourself...)

6 0
3 years ago
An independent-measures research study uses a total of 18 participants to compare two treatment conditions. If the results are u
Luba_88 [7]

Answer:

The answer is false

Step-by-step explanation:

In a sample above 30 obs  like this the confidence interval is defined as

X+- t* (s/sqrt(n)) where X is the mean t the tvalue for a given confidence level, n the size of sample and s standar deviation.

To find de appropiate value of t we must see the T table where rows are degrees of freedom and columns significance level

The significance is obtained:

significance = 1 - confidence level = 1 - 0.9 = 0.10

Degrees of freedom (df) for the inteval are

df = n - 1 = 18 - 1 = 17

So we must look for the value of a t with 17 values and significance of 0.10 which in t table is 1.740 not 1.746 ( thats the t for 16 df)

6 0
3 years ago
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