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ivanzaharov [21]
3 years ago
6

Evaluate this expression when x= 8 and y= 2: −2x2+3xy+y2

Mathematics
1 answer:
Monica [59]3 years ago
6 0

Answer:

This is the answer:

=20

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Analyze the diagram below and answer the question that follows. If 2004-02-01-02-00_files/, what is 2004-02-01-02-00_files/? A.
nadya68 [22]

Option A AY || XV given that A, Y, Z are midpoints of sides XW, VW, XV respectively. This can be obtained by knowing what similar triangles are and finding which sides are proportional.

<h3>Find the correct option:</h3>

Similar triangles: If two triangles have proportional sides the are similar.

For example, if ΔABC and ΔDEF are similar then

\frac{AB}{DE}= \frac{BC}{EF} =\frac{AC}{DF}

∠ABC = ∠DEF and ∠ACB = ∠DFE

Then we can write that, ΔABC ~ ΔDEF

Here in this question,

Since A, Y, Z are midpoints of sides XW, VW, XV

XA = AW

WY = VY

XZ = VZ

To consider sides AY and XV we should take triangles ΔWAY and ΔWXV

\frac{WX}{WA} =\frac{2WA}{WA} = 2  (since A is the midpoint of WX)

\frac{WV}{WY} =\frac{2WY}{WY} = 2  (since Y is the midpoint of WV)  

∠AWY = ∠XWV (reflexive property)

Therefore ΔWAY and ΔWXV are similar triangles

\frac{WX}{WA}= \frac{XV}{AY} =\frac{WV}{WY} = 2

∠WAY = ∠WXV and ∠AYW = ∠XVW

Hence,

AY || XV option A AY || XV given that A, Y, Z are midpoints of sides XW, VW, XV respectively.

 

Learn more about similar triangle here:

brainly.com/question/25882965

#SPJ1

Disclaimer: The question was given incomplete on the portal. Here is the complete question.  

Question: Analyze the diagram below and answer the question that follows. If Z, Y and A are midpoints of ΔVWX what is true about AY and XY?

A. AY || XV

B. 1/2 AY = XV

C. AY = XV

D. AY ≅ XV

 

5 0
2 years ago
Mike runs cross country. He runs 7 miles in 56
kondor19780726 [428]
It will take him 120 mins as he runs 8 minute miles
4 0
3 years ago
$1.85 for a sandwich, $1.15 for a drink, $0.65 for a bag of chips, and $1.10 for two apples. How much money does the student spe
-BARSIC- [3]

Answer:

$4.75 = 4 dollars and 75 cents

Step-by-step explanation:

$1.85 for a sandwich

$1.15 for a drink

$0.65 for a bag of chips

$1.10 for two apples.

The total amount of money the student spent at lunch, in dollars and cents is:

$1.85 + $1.15 + $0.65 + $1.10

= $4.75

In words = 4 dollars and 75 cents

7 0
3 years ago
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If a point is equidistant from the endpoints of a segment then so
Karolina [17]

Answer: If a point is equidistant from the endpoints of a segment, then the point is on the perpendicular bisector of the segment.

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What is the difference between the weight of 5.595.59 lb and the mean of the​ weights? b. How many standard deviations is that​
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They weight different
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