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3 years ago

9

Food prices including tax

1 answer:

bija089 [108]3 years ago

5 0

C is the answer
5+2=7

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Diameter of a cone base is 5 cm and a slant height is 4M find surface area

Nutka1998 [239]

Hi there!

The total surface area (tsa) of a cone can be calculated with this formula :

TSA = ( $\pi$ × r × slant height) + $\pi$ × r²

The "r" stands for "radius". The radius is equal to half the diameter, so in order to be able to use the formula, you'll need to divide the diameter by 2 to find the radius :

5 ÷ 2 = 2.5 = radius

Since the slang height is in meters, you'll need to transform it into centimeters in order to have both values in centimeters. To do so you'll need to use the cross product method :

1 m = 100 cm

4 m = x cm

(100 × 4) ÷ 1 = x cm

400 ÷ 1 = x cm

400 = x cm → The slant height is 400cm.

Now replace all the information in the formula and calculate everything :

TSA = ( $\pi$ × 2.5 × 400) + ( $\pi$ × 2.5²)

TSA = ( $\pi$ × 1,000) + ( $\pi$ × 6.25)

TSA ≅ 3,141.59 + 19.63

TSA ≅ 3,161.22 cm²

There you go! I really hope this helped, if there's anything just let me know! :)

4 0

3 years ago

Answer please i need help with this

stellarik [79]

$\qquad\qquad\huge\underline{\boxed{\sf Answer}}$

Let's evaluate ~

$\qquad \sf \dashrightarrow \: \dfrac{1}{3 {}^{ - 2} \times {x}^{ - 4} \times {y}^{2} }$

plug in the values :

$\qquad \sf \dashrightarrow \: \dfrac{1}{3 {}^{ - 2} \times {3}^{ - 4} \times { - 1}^{2} }$

$\qquad \sf \dashrightarrow \: \dfrac{1}{3 {}^{ - 6} {}^{ } {}^{} }$

$\qquad \sf \dashrightarrow \: {3}^{6}$

$\qquad \sf \dashrightarrow \:729$

Therefore, B is the Correct choice ~

・．━━━━━━━†━━━━━━━━━．・

5 0

2 years ago

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In a large city, 46% of adults support the local football team building a new stadium. If a poll is taken from a random sample o

elixir [45]

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8 0

3 years ago

Calculate the rate of change between the points (-6, -20) and (8, 22).

SCORPION-xisa [38]

Answer:

The rate change between these points is 3.

Step-by-step explanation:

6 0

3 years ago

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In a study of speed dating, female subjects were asked to rate the attractiveness of their male dates, and a sample of the res

Blizzard [7]

Answer:

hello the data is missing but it is included in the explanation below

missing data = 9, 6, 2, 1, 2, 5, 5, 1, 2, 6, 8, 10, 6, 6, 1, 5, 1, 3, 4, 4, 4, 5, 10, 9, 1, 6

Answer :

A) range = 9 , variance = 8.3015, standard deviation = 2.8812

B) The results cannot be a representative of the variation of attractiveness among the population of adult males

Step-by-step explanation:

A ) calculate the Range, variance and standard deviation

The given data = 9, 6, 2, 1, 2, 5, 5, 1, 2, 6, 8, 10, 6, 6, 1, 5, 1, 3, 4, 4, 4, 5, 10, 9, 1, 6

i) Range = difference between largest and smallest values

= 10 -1 = 9

ii) variance = summation of ; (xi − x)^2/n-1

= 207.5385/26−1 ≈ 8.3015

iii) standard deviation = $\sqrt{variance}$

= $\sqrt{8.3015}$ = 2.8812

B) The results cannot be a representative of the variation of attractiveness among the population of adult males

5 0

3 years ago