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3 years ago

Shelley's cup of tea cooled down 1/2 of a degree in 10 minutes. At what rate is her tea cooling down?

Mathematics

1 answer:

Vlada [557]3 years ago

3 0

Answer:

0.05 degrees a minute

Step-by-step explanation:

1/2 a degree divided by 10 is 0.05 degrees a minute

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There are (49)5 ⋅ 40 books at the library. What is the total number of books at the library?

ANTONII [103]

(4^9)5 X 4^0
4^9 is 262,144 x 5 = 1,310,720
1,310,720 x 1 = 1,310,720

7 0

2 years ago

Question 3, help please!

White raven [17]

The answer is not defined.

Explanation:

The given matrix is $\left[\begin{array}{cc}{2} & {4} \\ {1} & {-6}\end{array}\right]+\left[\begin{array}{c}{1} \\ {0}\end{array}\right]$

The matrix $\left[\begin{array}{cc}{2} & {4} \\ {1} & {-6}\end{array}\right]$ has dimensions $2\times 2$

This means that the matrix has 2 rows and 2 columns.

Also, the matrix $\left[\begin{array}{l}{1} \\ {0}\end{array}\right]$ has dimensions $2\times1$

This means that the matrix has 2 rows and 1 column.

Since, the matrices can be added only if they have the same dimensions.

In other words, to add the matrices, the two matrices must have the same number of rows and same number of columns.

Since, the dimensions of the two matrices are not equal, the addition of these two matrices is not possible.

Hence, the addition of these two matrices is not defined.

4 0

3 years ago

$134500 round to the nearest ten thousand

AlexFokin [52]

The rounded number is 140000

6 0

2 years ago

Ellie use 27 feet of fabric to make 48 doll dresses. She uses the same amount of fabric to make each dress. How many yards of fa

Evgesh-ka [11]

Ellie will use 1.777 yards for each doll

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3 years ago

If f(x) = 6x - 4, what is f(x) when x = 8?<br> оооо

Drupady [299]

Answer:

$f(x)=44$

Step-by-step explanation:

Replace the value of x with 8:

$f(x)=6(8)-4\\ \\ 6\times8= 48\\ \\ 48 -4 =44\\ \\ f(x)=44$

3 0

3 years ago