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kupik [55]
3 years ago
14

An eighth-grade student said the side length 41,40 and 9 do not form a right triangle, because

Mathematics
1 answer:
balandron [24]3 years ago
8 0

Answer:

Error was CHOOSING the CORRECT hypotenuse in the given sides.

H = 41 units

Step-by-step explanation:

Here, the given sides of the triangle are: 41,40 and 9

Now, as we know in a RIGHT ANGLED TRIANGLE:

The longest side is the HYPOTENUSE.

So, here H = 41

Now, by PYTHAGORAS THEOREM:

({PERPENDICULAR)^2 + ( BASE)^2 = (HYPOTENUSE)^

(40)^2 + (9)^2  = 1600 + 81  = 1681 = (41)^2\\\implies (40)^2 + (9)^2  = (41)^2

Hence, Pythagoras theorem for Right angled triangle is SATISFIED

So, error was CHOOSING the CORRECT hypotenuse in the given sides.

The correct H = 41 units and NOT 40 units.

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Are any of the places shown in the table closer than 1/2 mile to school
gayaneshka [121]

It's really hard to tell for anyone who can't see the table.
Sadly, you've left ALL of us in that awkward status.

6 0
4 years ago
A rectangular auditorium seats 1344 people. The number of seats in each rows exceeds the number of rows by 20. Find the number o
Tasya [4]
Let the number of rows be x

rows = x
seats in each row = x + 20

total seats = 1344
x (x + 20) = 1344
x^2 + 20x - 1344 = 0
(x + 48)(x - 28) = 0
x = -48  (rejected, answer cannot be negative) or x = 28

Therefore,
x = 28 
x + 20 = 48


Check:
Row = 28
Numbers of seat per row = 28 + 20 = 48
28 x 48 = 1344 (Correct)
 
Ans:There are 48 seats per row 
8 0
4 years ago
20 points plus that brain thing
madam [21]

Answer:

\huge\boxed{\sf \$ \ 26.24}

Step-by-step explanation:

Each side of the squared painting = 41 inches

A square has 4 sides. So,

4 sides of the square painting = 4(41) inches

                                                  = 164 inches

\rule[225]{225}{2}

<u>The shop charges:</u>

1 inches = $ 0.16

Multiply both sides by 164

164 inches = $ 0.16 × 164

164 inches = $ 26.24

\rule[225]{225}{2}

Hope this helped!

<h2>~AnonymousHelper1807</h2>
5 0
3 years ago
Plz help!
OLga [1]

Answer:

a) 3x²-4x-15

b) binomial

5 0
3 years ago
Write the quadratic function c(x)=x^2+6x+14 in vertex form
sergiy2304 [10]

Answer:

c(x)=(x+3)^2+5

Step-by-step explanation:

c(x)=x^2 + 6x + 14 = x^2+6x+9 + 5 = (x+3)^2+5

4 0
4 years ago
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