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4 years ago

Please answer questions 7 and 9!! I need help and show work and explain

Mathematics

1 answer:

Julli [10]4 years ago

3 0

Hey!

Hope this helps...

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Question 7: Is the Graph a 1-to-1?

The answer is: No

Reason: If you look at the graph, you see that when the x value is -1 the y value is -2, when x is 0, y is 0. When x is 1, y is 2, when x is 3, y is 4, and so on and so on...

Question 9: What is f(2)?

The answer is: When f (or x) is 2, y is 3... so f(2) = 3

Reason: (Look at reason for Question 7)

I hope this helped, if it did, please do not forget to give a "Thanks" and a 5 star rating...

And as always, thanks for using Brainly...

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Simplify 5 - 2 · 3 + 4.

yuradex [85]

5 because PEMDAS 2 times 3 6 then A add 6 + 4, 10 S subtract 10-5=5 answer is 5

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3 years ago

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OLYMPICS The number of men and women participating in the Winter

Nadusha1986 [10]

Answer:I can’t see the rest.

Step-by-step explanation:

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3 years ago

Can i get help? Don’t really understand.

Rufina [12.5K]

First option: correct. This is because angles WOX and XOZ are supplementary, so

$m\angle WOX=180^\circ-104^\circ=76^\circ$

Second option: correct. By the inscribed angles theorem, we have

$m\angle XWZ=m\angle XYZ=\dfrac{113^\circ}2=56.5^\circ$

Angles WOX and YOZ are congruent because they form a vertical pair; they both have measure 76 degrees. This means angles WXY and WZY are also congruent, since the interior angles of any triangle sum to 180 degrees in measure. Therefore triangles WXO and YZO form a side-side-side pair, and all SSS triangles are similar.

Third option: not correct. There is a theorem (not sure what the name is) regarding intersecting chords that asserts the average of the measures of arcs WY and XZ is the same as the measure of angle XOZ. This means

$\dfrac{m\widehat{WY}+113^\circ}2=104^\circ\implies m\widehat{WY}=95^\circ$

Fourth option: not correct. This is because arcs WX and XZ are not "supplementary" in the sense that they do not form a semicircle and their measures do not add to 180 degrees. We know this because it's clear that point O is not the center of the circle. If it was, then angle XOZ would be a central angle and its measure would be the same as the arc XZ it subtends.

Fifth option: correct. The theorem mentioned in the assessment of the third option makes itself useful here. We have

$\dfrac{m\widehat{WX}+m\widehat{YZ}}2=m\angle WOX\implies m\widehat{WX}+m\widehat{YZ}=2\cdot76^\circ=152^\circ$

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3 years ago

What is the measure of

gizmo_the_mogwai [7]

Answer: Q = 124 and P = 29

Step-by-step explanation:

Triangles always = 180 degrees so do straight lines.

6 0

3 years ago

Help pls itS BEEN 2 HOURS LUV U <3

nataly862011 [7]

Step-by-step explanation:

Hey there!

The equation of a circle which passes through any point having centre (h,k) is;

$( {x - h)}^{2} + ( {y - k)}^{2} = {r}^{2}$

In first blank ( x-_ ) keep "-2". In second blank (y - _ ) keep "4" and in last blank ( _ ) keep "36".

Hope it helps..

7 0

3 years ago