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Scorpion4ik [409]
3 years ago
13

Angela is plowing a large field for spring planting. On the first day, she plowed 2/7 of the field. On the second day, she plowe

d 2/3 of the field.
What fraction of the field is Not plowed at the end of the second day?

A) 1/21
B) 4/21
C) 17/21
D) 20/21​
Mathematics
1 answer:
Vlad1618 [11]3 years ago
5 0

Answer:

A) 1/21

Step-by-step explanation:

<u>2</u> + <u>2</u> is hard to do without making the denominators equal first.

7    3 you can multiply the fractions until the denominators are equal.

<u>6 </u> + <u>14</u> = <u>20</u>

21   21     21

now that this is done, the answer is as simple as looking at how much is left until a whole is completed. this will be A) 1/21

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For the angle 7π/4, draw and upload a representation of the angle on the unit circle in the coordinate plane. Place the angle in
melomori [17]

Answer:

2eXz2

Step-by-step explanation:

8 0
3 years ago
3^x= 3*2^x solve this equation​
kompoz [17]

In the equation

3^x = 3\cdot 2^x

divide both sides by 2^x to get

\dfrac{3^x}{2^x} = 3 \cdot \dfrac{2^x}{2^x} \\\\ \implies \left(\dfrac32\right)^x = 3

Take the base-3/2 logarithm of both sides:

\log_{3/2}\left(\dfrac32\right)^x = \log_{3/2}(3) \\\\ \implies x \log_{3/2}\left(\dfrac 32\right) = \log_{3/2}(3) \\\\ \implies \boxed{x = \log_{3/2}(3)}

Alternatively, you can divide both sides by 3^x:

\dfrac{3^x}{3^x} = \dfrac{3\cdot 2^x}{3^x} \\\\ \implies 1 = 3 \cdot\left(\dfrac23\right)^x \\\\ \implies \left(\dfrac23\right)^x = \dfrac13

Then take the base-2/3 logarith of both sides to get

\log_{2/3}\left(2/3\right)^x = \log_{2/3}\left(\dfrac13\right) \\\\ \implies x \log_{2/3}\left(\dfrac23\right) = \log_{2/3}\left(\dfrac13\right) \\\\ \implies x = \log_{2/3}\left(\dfrac13\right) \\\\ \implies x = \log_{2/3}\left(3^{-1}\right) \\\\ \implies \boxed{x = -\log_{2/3}(3)}

(Both answers are equivalent)

8 0
3 years ago
Which of the following could be the side measures of a right triangle ? GIVING BRAINLIEST
Tresset [83]

Answer:

b

Step-by-step explanation:

A^2 + B^2 = C^2 - Right Triangle Formula

8^2 + 7^2 = 6^2 - Plug it into the formula

64 + 49 = 36 - Solve

64 = 85 - Add B and C

21 - your answer

Hopefully this helps.

5 0
3 years ago
Mrs. Gilbert is interested in determining how many students spend 4 or more hours doing homework each week. She asks every stude
docker41 [41]

Answer:

C. Biased, because she only asked students on honor roll.

Step-by-step explanation:

Since Mrs. Gilbert's goal was to find how many students that spent >4 hours and not how many students that earned Honor Roll that spent >4 hours, the data is biased. Choose C.

4 0
3 years ago
HI PLEASE HELP BELOW IM REALL IN NEED OF HELP
aalyn [17]
The answer is 3, because the other two sides are 3 and the angle is 60, so the other angles will have to be 60. That means it is an equilateral triangle.
3 0
4 years ago
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