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yan [13]
3 years ago
14

A geologist had two rocks on a scale that weighed 2 1 ⁄ 2 lbs together. Rock A was 1/3 of the total weight. How much did rock A

weigh?
Mathematics
2 answers:
harina [27]3 years ago
5 0

Answer:

0.8333 pounds

Step-by-step explanation:

1/3 of 2 1/2 is 0.83 pounds

Katena32 [7]3 years ago
3 0

Answer: 1/2

Step-by-step explanation: first, change 1 1/2 into 3/2 (1/3*3/2). then, cross reduce (1*1/2). multiply, and then you have your answer

You might be interested in
What is the opposite operation of the square root?
Andru [333]

Answer:

The opposite of multiplication is division. The opposite of division is multiplication. The opposite of taking a square root is squaring

Step-by-step explanation:

7 0
3 years ago
Which of the vectors below is the sum of vectors a and b, shown here?
Fofino [41]

Answer:

Option C

Step-by-step explanation:

To answer this question you must use the parallelogram method shown in the attached image.

To answer this question, use the parallelogram method as shown in the attached image.

-Place the vectors a and b at the same point of origin.

-On the tip of the vector b draws a vector a.

-On the tip of vector a to draw a vector b.

-Draw a vector "f" that goes from the origin to the corner of the parallelogram.

The vector "f" represents the sum of the vector a with the vector b.

The correct option is C


7 0
4 years ago
Each figure is a regular polygon, find the value of x
Alexxandr [17]
X=5! you would set the two equations equal and subtract from both sides until you were left with the answer
4 0
4 years ago
Find the number of positive numbers less than 2020, which can not be written as the sum of six consecutive positive numbers.
sveta [45]

Answer: 334

Step-by-step explanation:

6 consecutive numbers can be written as:

n, n+1, n+2, n + 3, n + 4, n + 5,

The addition of those 6 numbers is:

n + n+1 + n+2 + n + 3 + n + 4 + n + 5

6n + 1 + 2 + 3 + 4 + 5 = 6n + 15

Let's find the maximum n possible:

6n + 15 = 2020

6n = 2020 - 15 = 2005

n = 2005/6 = 334.16

The fact that n is a rational number means that 2020 is can not be constructed by adding six consecutive numbers, but we know that with n = 334 we can find a number that is smaller than 2020, and with n = 335 we can found a number bigger than 2020.

So with n =  334 we can find one smaller.

6*334 + 15 = 2019

and we can do this for all the values of n between 1 and 334, this means that we have 334 numbers less than 2020 that can be written as a sum of six consecutive positive numbers.

8 0
3 years ago
Pls help, Thx! Solve using the substitution method.<br> y = 2x - 4<br> 6x - 3y = 12
Kay [80]
Your answer would be 0 and -4. When you plug in 2x - 4 in for the y of the second equation and solve, you get x = 0 and y = -4.
6 0
3 years ago
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