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3 years ago

Which of the following is an expression:

Mathematics

2 answers:

Shkiper50 [21]3 years ago

7 0

Answer:

Step-by-step explanation:

Equations are values or a combination of terms the equal another combination of terms or values. Because A is the only one without an equals sign, we know that it is an expression.

miskamm [114]3 years ago

5 0

B is an expression because it got one variable

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Marta is solving the equation S = 2πrh + 2πr2 for h. Which should be the result?

geniusboy [140]

Step-by-step explanation:

$S = 2\pi rh + 2\pi {r}^{2} h \\ \\ \therefore \: S = (2\pi r + 2\pi {r}^{2}) h \\ \\ \therefore \: S = 2\pi r(1 + {r}) h \\ \\ \huge \purple{ \boxed{\therefore \: h = \frac{S}{2\pi r(1 + {r})} }}\\$

4 0

3 years ago

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What is the length of leg y of the right triangle? 84 85 O1 09 O 13 O 26

Softa [21]

Answer:

$\boxed{\sf Length \ of \ leg \ y = 13}$

Step-by-step explanation:

Pythagoras theorem states that “In a right-angled triangle, the square of the hypotenuse side is equal to the sum of squares of the other two sides”.

$\therefore \\ \sf \implies {84}^{2} + {y}^{2} = {85}^{2} \\ \\ \sf {84}^{2} = 7056 : \\ \sf \implies 7056 + {y}^{2} = {85}^{2} \\ \\ \sf {85}^{2} = 7225 : \\ \sf \implies 7056 + {y}^{2} = 7225 \\ \\ \sf Substract \: 7056 \: from \: both \: sides : \\ \sf \implies (7056 - 7056) + {y}^{2} = 7225 - 7056 \\ \\ \sf 7056 - 7056 = 0 : \\ \sf \implies {y}^{2} = 7225 - 7056 \\ \\ \sf 7225 - 7056 = 169 : \\ \sf \implies {y}^{2} = 169 \\ \\ \sf 169 = {13}^{2} : \\ \sf \implies {y}^{2} = {13}^{2} \\ \\ \sf \implies y = \sqrt{ {13}^{2} } \\ \\ \sf \implies y = {13}^{ \cancel{2} \times \frac{1}{ \cancel{2}} } \\ \\ \sf \implies y = 13$

So,

Length of leg y of the right triangle = 13

5 0

3 years ago

Read 2 more answers

You randomly guess the answers to two questions on a multiple-choice test. Each question has three choices: A, B, and C. What is

Maksim231197 [3]

The probabilityof answering one question correctly is 1/3. To do this two times, the probability is 1/3*1/3 = 1/9 ≈ 11%

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4 years ago

Members of alachua district choir were asked, when given the choice between romanticism or gothic style singing, which style the

ycow [4]

The question is incomplete, so here is the complete question.

Members of alachua district choir were asked, when given the choive between romanticismor gothic style singing, which style they preferred to sing for state competition. The data was broken down by gender:

48 males preferred Romanticism

63 males preferred Gothic

59 females preferred Romanticism

62 females preferred Gothic

Part A: Fill in and complete the following contigency table. Circle the largest joint frequency and put a box around the smallest marginal frequency.

Romanticism Gothic Total

Males

Females

Total

Part B: Which style was preferred as the state competition piece and by what percentage?

Part C: Which subject was preferred the most by Males?

Part D: What frequency does 125/232 represent?

Answer and Step-by-step explanation:

Part A:

Romanticism Gothic Total

Males 48 63 111

Females 59 62 121

Total 107 125 232

Part B: The preferred style is Gothic by a percentage of

P = $\frac{125}{232}$

P = 54%

Part C: According to the table, the style preferred the most by males was Gothic, since 63 males chose it over 48 that chose Romanticism.

Part D: The frequency 125/232 represents the total of people (male AND female) that preferred Gothic over the total of people in both categories.

3 0

4 years ago

Can somebody help me please ASAP first person to answer gets brainliest

sleet_krkn [62]

Answer:

Yes, d = 7, 32, 39, 46

Step-by-step explanation:

You can see each time it goes up by 7, meaning it is arithmetic.

The sequence would be: 4, 11, 18, 25, 32, 39, 46

8 0

3 years ago