Li needs 15 pieces of string each one half of an inch long. she cut a 6 inch piece of string into pieces that are one half of an inch long. how many more piece of string does she need?

Answers

Answer 1
Answer: 6 times 2 is 12 and 15 minus 12 is 3 so three more pieces are needed.

Related Questions

If LM=18 cm and MN=5 cm, then what are the possible lengths for LN so that LM, MN, and NL can form a triangle?
Solve the following system. Verify the solution.y = 4x – 11x = 2y – 13
Solve for the value of x
Divide £42 in a ratio of 4:6
Solve the equation.1) 2(1.5n + 4) -6n= -72) 5s - 2 + 3 (s - 11) = 5

Prices were recorded for all the loaves of bread in a supermarket, the mean price for a loaf of bread was $1.37 with a standard deviation of $0.67, Find the probability that if 13 loaves are selected the mean price is less than $1.00. A 0.0032


B 0.5643


C 0.9105


D 0.0233

Answers

Answer:

z = (1-1.37)/((0.67)/(√(13))) = -1.991

And we want this probability:

P(z<-1.991)

And using the normal standard distribution or excel we got:

P(z<-1.991)= 0.0233

And the best option would be:

D 0.0233

Step-by-step explanation:

For this case we have the following parameters:

\mu = 1.37, \sigma =0.67

And we select a sample size of n=13. And we want to find this probability:

P(\bar X <1)

We can assume that the distribution for this case is normal and then we can use the z score formula given by:

z= (\bar X -\mu)/((\sigma)/(√(n)))

And if we replace the data given we got:

z = (1-1.37)/((0.67)/(√(13))) = -1.991

And we want this probability:

P(z<-1.991)

And using the normal standard distribution or excel we got:

P(z<-1.991)= 0.0233

And the best option would be:

D 0.0233

Solve. -2(6 - 20n) = 20(2n - 3)a. 40
b. 36
c. no solution
d. all real numbers

Answers

The equation -2(6 - 20n) = 20(2n - 3) has no solution.

Hence the correct option is C.

Given is an equation -2(6 - 20n) = 20(2n - 3), we need to solve it for n,

Let's solve the equation step by step:

-2(6 - 20n) = 20(2n - 3)

First, distribute the -2 on the left side and the 20 on the right side:

-12 + 40n = 40n - 60

Next, let's move all the terms with "n" to one side of the equation:

-12 + 40n - 40n = 40n - 40n - 60

-12 = -60

Now, we can see that the equation is inconsistent, as there are no values of "n" that satisfy this equation.

Therefore, the correct answer is:

c. no solution

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-2(6-20n) = 20(2n-3)
-12 + 40n = 40n - 60
40n = 40n - 60 + 12
40n - 40n = 60 + 12       (dont minus 40n - 40n yet, we can factorise it)
n(40-40) = 60 + 12
n = (60 + 12)/(40-40) 
n = 60 + 12/ 0

Therefore no solution as we cannot divide by 0

can you write an equation by setting an expression equal to itself. would an equation like this be true

Answers


Of course !  An expression is always equal to itself.

But if there's, say, an 'x' in the expression, then such an equation would be true
for x=every possible number.  You might say it has an infinite number of solutions ...
which certainly has to be true, because no matter what you do to an expression,
it's still always equal to itself !

 
yes it would be as long as it truly equals eachother

Angela is buying a dress that is on sale for 20% off. If the original price of the dress is $60.00, how much money is Angela saving on the dress? WORTH 80 POINTS

Answers

Hi!

The answer is exactly those 20% of the dress, so 20% * 60$ = 0,2 * 60 = 12$.

Hope this helps!

Final answer:

The problem involves calculating a percentage saving on a purchase. Angela is buying a dress originally priced at $60 but has a 20% discount, which means she is saving $12 on her purchase.

Explanation:

Angela is looking to buy a dress that has a 20% discount. The original price of the dress is $60. To calculate how much Angela will save, we first need to find out what 20% of $60 is. To do this, we perform the following steps:

  1. Convert the percentage into a decimal by dividing it by 100. This means 20% becomes 0.2.
  2. Multiply the original price of the dress by this decimal. So, 0.2 * $60 equals $12

Therefore, "Angela will be saving $12 on her dress purchase".

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How many numbers can you get by multiplying two or more members of the set {1,2,3,5,11} together?

Answers

it'll be 19 because your just adding numbers

Increase £64 by 70%??????

Answers

I'm not sure if you used the euro sign accidentally or what but this is how to increase 64 by 70%

divide 64 by 10.
6.40
then multiply it by 7.
44.80
then add 44.8 to your original number. (64)
the answer is:
108.8

If you did put that sign there purposely and if it means something then I don't know if it matters or if this is right.