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ivanzaharov [21]

2 years ago

14

Sunayana bought a pen for Rs 19 and sold it at 20% profit to Debasis. If she had bought it for Rs 20, what would be her profit o

r loss percent? [Help !]

1 answer:

Zarrin [17]2 years ago

4 0

Step-by-step explanation:

I hope that help you thank for ask me

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Question 2 Pyramids can be made of (check ALL that apply): circles squares triangles cylinders rectangles

PilotLPTM [1.2K]

The answers that apply are Triangles, Squares, and Rectangles. Because when you look at the base of the pyramid more closely, they are maded of 3 different kinds of shapes.

5 0

3 years ago

HELP NEEDED ASAP GIVING BRAINLIEST AND PLEASE EXPLAIN

Dennis_Churaev [7]

Answer: (B is the answer.

Step-by-step explanation: The graph I attached corresponds with B.

Cross -3 by -2.

5 0

2 years ago

Pls help meee<br>thank you thank you thank you thank you

olga_2 [115]

Answer:

See below

Step-by-step explanation:

11 box 1: 12

11 box 2: 101

12 box 1: 80

12 box 2: 80

12 box 3: 80

13 box 1: 16

13 box 2: 16

13 box 3: 76

20 = y + 12

20 - 12 = y + 12 - 12

8 = y

x + 2 = 19

x + 2 - 2 = 19 - 2

x = 17

z - 313 = 176

z - 313 + 313 = 176 + 313

z = 489

6 0

2 years ago

Read 2 more answers

A circle has centre (3,0) and radius 5. The line y = 2x + k intersects the circle in two points. Find the set

lara [203]

A circle with center $(3,0)$ and radius $5$ has equation

$(x-3)^2+y^2=25 \iff x^2 + y^2- 6 x = 16$

If we substitute $y=2x+k$ in this equation, we have

$x^2+(2x+k)^2-6x=16 \iff 5x^2+(4k-6)x+k^2-16=0$

This equation has two solutions (i.e. the line intersects the circle in two points) if and only if the determinant is greater than zero:

$\Delta=b^2-4ac=(4k-6)^2-4\cdot 5\cdot (k^2-16)>0$

The expression simplifies to

$-4 (k^2 + 12 k - 89)>0 \iff k^2 + 12 k - 89$

The solutions to the associated equation are

$k^2 + 12 k - 89=0 \iff k=-6\pm 5\sqrt{5}$

So, the parabola is negative between the two solutions:

$-6-5\sqrt{5}$

8 0

3 years ago

Pl help it’s for a grade

zlopas [31]

Answer:

width = x+2

Step-by-step explanation:

area/length = width

(x^2+9x+14) / (x+7) =?

(x+7)(x+2) / (x+7) = x+2

5 0

2 years ago