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HACTEHA [7]
2 years ago
14

Choose the best description

Mathematics
1 answer:
Artyom0805 [142]2 years ago
8 0
Im not sure but I think it could be D.
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Find the area of the shape.
Anna71 [15]

Answer: 16\pi

Step-by-step explanation:

A_{\text{circle}} =\pi (8)^2 =64\pi\\\\A_{\text{shape}}=\frac{64\pi}{4}=16\pi

3 0
1 year ago
NEED HELP ASAP<br> please give me the answer asap.
uranmaximum [27]

Answer:

you again ask your family

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The efficiency for a steel specimen immersed in a phosphating tank is the weight of the phosphate coating divided by the metal l
34kurt

Answer:

Kindly check explanation

Step-by-step explanation:

Given the data:

Temp. 174 176 177 178 178 179 180 181

Ratio 0.86 1.31 1.42 1.01 1.15 1.02 1.00 1.74

Temp. 184 184 184 184 184 185 185 186

Ratio 1.43 1.70 1.57 2.13 2.25 0.76 1.37 0.94

Temp. 186 186 186 188 188 189 190 192

Ratio 1.85 2.02 2.64 1.53 2.48 2.90 1.79 3.16

A)

Using the online linear regression calculator, the lie of best fit which models the data above is :

ŷ = 0.09386X - 15.55523

Where ;

X = independent variable

ŷ = predicted or dependent variable

- 15.55523 = intercept

0.09386 = gradient / slope

B)

Point estimate when tank temperature is 186

ŷ = 0.09386(186) - 15.55523

ŷ = 17.45796 - 15.55523

ŷ = 1.90273

C)

Residual error (y - ŷ), ŷ = 1.90273 when x = 186

(0.94 - 1.90273) = −0.96273

(1.85 - 1.90273) = −0.05273

(2.02 - 1.90273) = 0.11727

(2.64 - 1.90273) = 0.73727

D)

To determine the proportion of observed variation in efficiency ratio, we find the Coefficient of determination R^2, which can be found using the online Coefficient of determination calculator : the r^2 value obtained is 0.4433.

5 0
3 years ago
Given a rectangle with lengths of 7 meters and widths of 5 metres,what would be the perimeter
Vsevolod [243]

Answer:

Perimeter = 24 meters

step by step explanation

3 0
3 years ago
Does the zoo have enough leaves too feed 5 elephants and 8 giraffes
aleksley [76]

Answer:

yeah probably

Step-by-step explanation:

3 0
3 years ago
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