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2 years ago

Multiply 400 and 45.2 together. Round to the nearest hundredth when necessary. Answer:

Mathematics

2 answers:

Sveta_85 [38]2 years ago

8 0

Answer:

18080.00

Step-by-step explanation:

hope this helps :)

Olegator [25]2 years ago

3 0

Answer:

445.2 i think

Step-by-step explanation:

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Which of the following relations describes a function?

PtichkaEL [24]

Howdy! My name is Christian and I’ll try and help you with this question!

Date: 9/29/20 Time: 9:08 am CST

Answer:

{ (1, 3), (2, 3), (3, 3), (4, 3) }

Explanation:

This is because for each x value, the number on the left of the set, there is no other x values of the same number, ( 1, 2, 3, 4)

Hope this helps you with your question!

Sincerely,

Christian

8 0

3 years ago

Solve the Law of Cosine: c^2 = a^2+ b^2 - 2abcosC for cos C.

Andrew [12]

Answer:

The Law of Cosine : cos C = $\frac{a^{2}+ b^{2}-c^{2}}{2ab}$

Step-by-step explanation:

See the figure to understand the proof :

Let A Triangle ABC with sides a,b,c,

Draw a perpendicular on base AC of height H meet at point D

Divide base length b as AD = x -b and CD = x

By Pythagoras Theorem

In Triangle BDC And In Triangle BDA

a² = h² + x² ( 1 ) c² = h² + (x-b)²

c² = h² + x² + b² - 2xb ...(. 2)

From above eq 1 and 2

c² = (a² - x²) + x² + b² - 2xb

or, c² = a² + b² - 2xb .....(3)

Again in ΔBDC

cos C = $\frac{BD}{BC}$

Or, cos C = $\frac{x}{a}$

∴ x= a cos C

Now put ht value of x in eq 3

I.e, c² = a² + b² - 2ab cos C

Hence , cos C = $\frac{a^{2}+ b^{2}-c^{2}}{2ab}$ Proved Answer

6 0

3 years ago

Two students created a list of steps for the following construction. Which student has steps in the correct order, and which doe

irina [24]

Answer:

Step-by-step explanation:

As it is impossible to understand who have done what ,

the correct construction should be :

You are given point A, point B and point C.

Construct a line parallel to that line AB passing through point C.

1) Place the compass on point B, and swing an arc that crosses line AB and line BC.

Label the points D and E.

2) Keep the compass at the same width, and place it on point C.

3) Swing an arc that crosses line BC, and label the point F outside the segment [BC] .

4) Open the compass to the width between points D and E.

Keeping the compass at the same width, place it on point F.

5) Swing an arc that intersects the arc created from line BC at point C.

6) Mark the intersection of the two arcs as point G.

7) Draw a line through point C and point G.

You just have to discover who has done that.

8 0

3 years ago

What’s its 16 to the 2nd power

expeople1 [14]

Answer:

256

Step-by-step explanation:

16 x 16

6 0

3 years ago

Read 2 more answers

Utilize graphing to find the solution to

Llana [10]

Answer:

(4, -3)

Step-by-step explanation:

To solve this with graphing all you need to do is enter both equations in a graphing calculator (you can use desmos online) and then find the point where both lines intersect.

7 0

2 years ago