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ASHA 777 [7]
3 years ago
9

HELP!! 100 POINTS!!

Mathematics
2 answers:
NNADVOKAT [17]3 years ago
5 0

Answer:

x=9 x=-1

Step-by-step explanation:

x²-8x-9=0    a=1 b=-8 c=-9

you have to use the quadratic formula to get the values.

Sladkaya [172]3 years ago
3 0

Answer:

It's incorrect

x = -1, 9

Step-by-step explanation:

x²-8x-9=0

x²-8x=9

x²-8x+16=9+16

(x-4)²=25

You have to take square root both sides, so RHS would be sqrt(25) = 5 (+/-)

x-4=+/-5

x-4=5

x-4=-5

x=9

x=-1

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A park in the shape of a right triangle is the set in the middle of 3 square rose gardens, with one garden along the side. Which
il63 [147K]

<u>Complete Question:</u>

A park in the shape of a right triangle is set in the middle of 3 square rose gardens, with one garden along each side. Which statement is true about the 3 gardens?

A) The area of Garden B minus the area of Garden C is equal to the area of Garden A.

B) The area of Garden B plus the area of Garden C is equal to twice the area of Garden A.

C) The area of Garden C minus the area of Garden B equals the area of Garden A.

D) The area of Garden C minus the area of Garden A is equal to twice the area of Garden B.

<u>Correct Answer:</u>

The area of Garden C minus the area of Garden B equals the area of Garden A.

Thus, (C) is the correct option.      

<u>Step-by-step explanation:</u>

According to question , a right angle triangle with right angle at R and A is perpendicular , B is base and C is hypotenuse  of the triangle.

One square garden along  each side of triangle.

Area of square = Side × Side

So area of each square garden is :

A ( A) = A^2\\B ( B) = B^2\\C ( C )= C^2

According to Pythagoras theorem,

In  a right angle triangle, square of hypotenuse is equal to  sum of square of the remaining two sides.

By figure,

A^2 + B^2 = C^2

Area of garden A + area of garden B = Area of garden C

A^2 =  C^2 -B^2

The area of Garden C minus the area of Garden B equals the area of Garden A.

Thus, (C) is the correct option.

8 0
3 years ago
The distance in miles from Mercury to the Sun in scientific notation is 3.6 × 10
natka813 [3]

Answer:

wouldnt it be 4.2 ?

Step-by-step explanation:

7 0
3 years ago
What is the circumference of a circle with an area of 50.24? Use 3.14 for pi.
kow [346]

Answer:

The answer is 200.96 cm^2.

2*3.14*r=50.24

=>r=50.24/6.28

=>r=8 cm

Thus area = 3.14*r*r

= 3.14*8*8

=200.96 cm^2

Step-by-step explanation:

4 0
3 years ago
-4=b/2 <br> a)-8<br> b)-2<br> c)2<br> D)8
Kitty [74]
Answer : A {-8}

-4 = b/2

-4 *2 = b

-8 = b
7 0
3 years ago
Arturo has a net spendable income of $1,700 per month. What is the maximum amount of money that he should budget for housing? Ro
Mrrafil [7]
Hello! I believe that 630 would be the most appropriate answer! I hope I helped!
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