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3 years ago

Please help I don’t understand this and it’s due today in a bit

Mathematics

1 answer:

Nata [24]3 years ago

5 0

The last question I don’t see what it asks for. If it asks for the measure of angle A, B, or C. All you have to do is plug 16 into x and do the math.

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Which series of transformations will not change the coordinates of point N in triangle LMN?

Serga [27]

Answer:

what does that mean

Step-by-step explanation:

8 0

3 years ago

An element with mass 780 grams decays by 17.1% per minute. How much of the element is remaining after 19 minutes to the nearest

Anit [1.1K]

Step 1
Formulate a recursive sequence modeling the number of grams after n minutes.
we have that
100%-17.1%-------------- > 82.9%------------> 0.829

a(n) = 780*[0.829<span>^n]
</span>
for n=19 minutes
a(19)=780*[0.829^(19)]=22.1121 g---------------> 22.1 g

the answer is 22.1 g

6 0

3 years ago

If two distinct lines intersect, which is NOT necessarily true?

Thepotemich [5.8K]

Answer:

Option (b) is the answer.

Step-by-step explanation:

If two distinct lines intersect

Then they are not parallel because parallel lines never intersect they go hand in hand

But since, we need to tell which is not true

So, option A is discarded.

Option (c) and (d) are also true hence, discarded.

Option (b) is correct that is the lines are perpendicular this is not true. hence, considered

Therefore, option (b) is the answer.

7 0

3 years ago

Read 2 more answers

2(x+4)=18 help and hurry

daser333 [38]

Answer:

x = 5

Step-by-step explanation:

2x + 8 = 18

2x = 10

x= 5

4 0

3 years ago

Read 2 more answers

Determine if the matrix below is invertible. Use as few calculations as possible. Justify your answer. [Start 4 By 4 Matrix 1st

Len [333]

Answer:

Yes, it is invertible

Step-by-step explanation:

We need to find in the matrix determinant is different from zero, since iif it is, that the matrix is invertible.

Let's use co-factor expansion to find the determinant of this 4x4 matrix, using the column that has more zeroes in it as the co-factor, so we reduce the number of determinant calculations for the obtained sub-matrices.We pick the first column for that since it has three zeros!

Then the determinant of this matrix becomes:

$4\,*Det\left[\begin{array}{ccc}1&4&6\\0&3&8\\0&0&1\end{array}\right] +0+0+0$

And the determinant of these 3x3 matrix is very simple because most of the cross multiplications render zero:

$Det\left[\begin{array}{ccc}1&4&6\\0&3&8\\0&0&1\end{array}\right] =1 \,(3\,*\,1-0)+4\,(0-0)+6\,(0-0)=3$

Therefore, the Det of the initial matrix is : 4 * 3 = 12

and then the matrix is invertible

4 0

3 years ago