3 years ago

Mark is sorting shapes. He has a group of shapes with these attributes:

Mathematics

1 answer:

Sloan [31]3 years ago

6 0

The answer would be C. :))

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A parking lot costs $2100 a month to operate, and it spends $130 each

Nat2105 [25]

Answer:

$230n-$2100

Step-by-step explanation:

Profit=revenue-cost

Cost=$2100+$130×n

Revenue=$360×n

Profit=$360n-($2100+$130n

=$360n-$2100-$130n

=$230n-$2100

6 0

3 years ago

What is the surface area of the cylinder with height 5 ft and radius 3 ft? Round your answer to the nearest thousandth

BabaBlast [244]

Answer:

150.8ft²

Step-by-step explanation:

A=2πrh+2πr2=2·π·3·5+2·π·32≈150.79645ft²

8 0

3 years ago

Data were collected on random specimens of Yellowfin tuna from 1991 and 2010. For the sample of 231 specimens of Yellowfin tuna,

Molodets [167]

Answer:

95% confidence interval: (0.325 ,0.383)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 231

Sample mean = 0.354 ppm

Sample standard deviation = 0.231 ppm

95% confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 4 and}~\alpha_{0.01} = \pm 1.97$

$0.354 \pm 1.97(\dfrac{0.231}{\sqrt{231}} ) = 0.354 \pm 0.029 = (0.325 ,0.383)$

6 0

3 years ago

Expand the following:3/4(-24x-16)

Illusion [34]

Answer:

-18x-12

Step-by-step explanation:

3/4(-24x-16)=-18x-12

4 0

3 years ago

Hellpp please 20 points for that

Sergio [31]

Answer:

a) 12cm

b) 360cm²

c) 2160cm cubed

Step-by-step explanation:

you would use Pythagoras theorem for A

so half of 18 is 9

15² - 9² = 144

the square root of 144 is 12

the height is 12cm

18 x 20 = 360cm²

csa x L

csa = b x h divide by 2

18 x 12 = 216cm²/2 = 108cm²

108xm² x 20cm = 2160cm cubed

8 0

3 years ago