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3 years ago

For brainiest:):):):):)

Mathematics

1 answer:

Nataliya [291]3 years ago

3 0

Answer:

1. 0.39

2. 0.126

3. 5%

4. 125%

hope this helped!

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In a probability experiment, Craig rolled a six-sided die 57 times. The die landed on a number greater than three 36 times. What

Firdavs [7]

57-36=21 times (rolled less than 3)
36:21 →12:7

6 0

3 years ago

For waht values of x do the vectors -1,0,-1), (2,1,2), (1,1, x) form a basis for R3?

DaniilM [7]

<h2>Answer:</h2>

The values of x for which the given vectors are basis for R³ is:

$x\neq 1$

<h2>Step-by-step explanation:</h2>

We know that for a set of vectors are linearly independent if the matrix formed by these set of vectors is non-singular i.e. the determinant of the matrix formed by these vectors is non-zero.

We are given three vectors as:

(-1,0,-1), (2,1,2), (1,1, x)

The matrix formed by these vectors is:

$\left[\begin{array}{ccc}-1&2&1\\0&1&1\\-1&2&x\end{array}\right]$

Now, the determinant of this matrix is:

$\begin{vmatrix}-1 &2 & 1\\ 0& 1 & 1\\ -1 & 2 & x\end{vmatrix}=-1(x-2)-2(1)+1\\\\\\\begin{vmatrix}-1 &2 & 1\\ 0& 1 & 1\\ -1 & 2 & x\end{vmatrix}=-x+2-2+1\\\\\\\begin{vmatrix}-1 &2 & 1\\ 0& 1 & 1\\ -1 & 2 & x\end{vmatrix}=-x+1$

Hence,

$-x+1\neq 0\\\\\\i.e.\\\\\\x\neq 1$

4 0

3 years ago

Suppose a pack of candy bars has 4 bars. Each bar weighs 5.78 ounces. How much does the pack weigh?

Anarel [89]

Answer:

23.12 ounces

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Wilbur sold half of his comic books and then bought fourteen more. he now has 24. how many did he begin with?

rosijanka [135]

First, subtract 24 - 14 to get how many books he had after he sold half of his collection and bought 14 more:

24 - 14 = 10

10 = number of books after he sold half of his collection.

Now, you need to multiply 10 x 2, because you need to find the original number of comic books:

10 x 2 = 20

He originally had 20 comic books.

An equation you could use for this question is:

2(24 - 14) = x. (X = number of comic books)

Hope this helps!!
~Kiwi

7 0

3 years ago

Given f(x)=12x−5, find f(4). To earn full credit, show your work using a method explained in the Orientation.

Anvisha [2.4K]

Step-by-step explanation:

Given,

f(x) = 12x - 5

as,

f(4) so,

f(4) = 12(4) - 5 

= 48 - 5 = 43 ans.

hope this helps you dear take care!

4 0

3 years ago