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3 years ago

APEX

Mathematics

1 answer:

Len [333]3 years ago

5 0

Answer:

B. 30

Step-by-step explanation:

A line is 180 degrees, so when we have 100, we subtract that from 180 to get the interior angle of 80.

A triangle has a sum of 180, so we just subtract 80 and 70 from 180 to get 30.

Hope this helps

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What is 3.01 as a mixed number

Montano1993 [528]

3.01 as a mixed number is 3 and 1/100
It is 1/100 because the 1 is in the hundredths place

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3 years ago

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Explain why the sum of the two distances to the foci are always the same.

Verdich [7]

Hello,

one of two fixed points inside an ellipse from which the sum of the distances to any point on the ellipse is constant.

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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.

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3 years ago

Simplify:2 1/3(4 1/4÷2)

kondor19780726 [428]

Answer:

$4\frac{23}{24}$

Step-by-step explanation:

We want to simplify:

$2\frac{1}{3}(4\frac{1}{4}\div 2)$

We convert to improper fraction to get:

$\frac{7}{3}(\frac{17}{4}\div 2)$

We now deal with the parenthesis by multiplying with the reciprocal of 2.

$\frac{7}{3}(\frac{17}{4}\times \frac{1}{2} )$

This gives:

$\frac{7}{3}(\frac{17}{8})$

We multiply to get:

$\frac{7}{3}(\frac{17}{8})$

This simplfies to:

$\frac{119}{24}$

We write as mixed number

$4\frac{23}{24}$

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3 years ago

Solve In (2x+3)=7 round to the nearest thousandth

e-lub [12.9K]

To solve this problem you must apply the proccedure shown below:

1. You have:

In(2x+3)=7

2. Then, you must apply log(e), as below:

In(2x+3)=ln(e^7)

3. Now, you obtain:

2x+3=e^7

4. Youy must clear the variable "x", as below:

2x=e^7-3
 x=(e^7-3)/2

5. Therefore, the value of "x" is:

x=546.817

The answer is: x=546.817

8 0

2 years ago