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Lemur [1.5K]
3 years ago
9

What is the value of k?

Mathematics
1 answer:
Kipish [7]3 years ago
7 0

Answer: 8

Step-by-step explanation:

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Round 1395 to the nearest hundred
algol [13]

Answer:

1400

Step-by-step explanation:

It is closer to 1400 than 1300

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3 years ago
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Chris rents a car for a total of £375 The rental charges are £150 for the first day and £75 per day after that. For how many day
valkas [14]

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4 days in total

Step-by-step explanation:

3 0
3 years ago
Ava is 23 cm taller than Olivia, and Olivia is half the height of Lucas. If Lucas is 1.78 m tall, how tall are Ava and Olivia? E
Colt1911 [192]
Ava is 1.09 and Olivia is 0.86
3 0
3 years ago
3sina-4sin4a/sin5a<br> if a=-45 degree
Ierofanga [76]

Given:

The given expression is:

\dfrac{3\sin a-4\sin 4a}{\sin 5a}

To find:

The value of the given expression at a=-45.

Solution:

We have,

\dfrac{3\sin a-4\sin 4a}{\sin 5a}

Substituting a=-45, we get

\dfrac{3\sin (-45)-4\sin [4(-45)]}{\sin [5(-45)]}

=\dfrac{-3\sin (45)+4\sin (180)}{-\sin (225)}

=\dfrac{-3\sin (45)+4\sin (180)}{-\sin (180+45)}

=\dfrac{-3\sin (45)+4\sin (180)}{\sin (45)}

On substituting \sin (180), we get,

=\dfrac{-3\sin (45)+4(0)}{\sin (45)}

=\dfrac{-3\sin (45)+0}{\sin (45)}

=\dfrac{-3\sin (45)}{\sin (45)}

=-3

Therefore, the value of the given expression at  a=-45 is -3.

8 0
3 years ago
I'm not sure what I​ supposed to do there is an example to help.
Delvig [45]
Question 1:

Conclusion: ∠DAY + ∠YAK = 180°

Justification: definition of linear pair


Question 2:


Conclusion: Point U is the midpoint of RN

Justification: RU=UN, definition of midpoint


Question 4:

Conclusion: ∠3 = ∠7

Justification: definition of alternate interior angles


Question 5:

Conclusion: ∠ABD = ∠DBC

Justification: definition of bisector


Question 6:

Conclusion: ∠2 and ∠3 are supplementary angles

Justification: definition of supplementary angles


Sorry question 3, don't know what it's trying to say
8 0
3 years ago
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