Ask question

Ask question

All categories

AleksAgata [21]

3 years ago

11

The rectangle below has an area of X squared -144 m² and a length of X +12 m what expression represents the width of the triangl

e

1 answer:

Zigmanuir [339]3 years ago

5 0

A = L* W
W = A / L
W = (x^2-144m^2)/(x+12m)

You might be interested in

Find the discriminant and determine the nature of the roots to the quadratic equation

Katen [24]

№17
$x^{2} +6x-7=0 \\ D=6 ^{2} -4*(-7)=36+28=64=8 ^{2} \\ \\ x_{1} = \frac{-6+8}{2} =1 \\ \\ x_{2} = \frac{-6-8}{2} =-7$
Answer: x₁ = 1
   x₂ = - 7

№18
$2 x^{2} -3x+4=3 \\ 2 x^{2} -3x+4-3=0 \\ 2 x^{2} -3x+1=0 \\ \\ D= -3 ^{2} -4*2=9-8=1 \\ \\ x_{1} = \frac{3+1}{2*2} = \frac{4}{4} =1 \\ \\ x_{2} = \frac{3-1}{2*2} = \frac{2}{4} =0.5$
Answer: x₁ = 1
     x₂ = 0,5.

№19
$2 x^{2} -4x-5=0 \\ D=-4 ^{2} -4*2*(-5)=16+40=56 \\ \\ x_{1}= \frac{4+ \sqrt{56} }{2*2} = \frac{4}{4} + \sqrt{ \frac{56}{16} } =1+ \sqrt{3.5} \\ \\ x_{2} = \frac{4- \sqrt{56} }{2*2} = \frac{4}{4} - \sqrt{ \frac{56}{16} } =1- \sqrt{3.5} 
$
Answer: x₁ = 1 + √3.5
     x₂ = 1 - √3.5

3 0

4 years ago

Solve for x. 0=2x^2 - 8 x - 10

garri49 [273]

Answer:

its 1 or -5

Step-by-step explanation:

8 0

3 years ago

Wilton drives a taxicab. He charges $40 per hour. One passenger gave Wilton a tip of $30.

xxTIMURxx [149]

A) h=hours
b) 40 (h)+30= amount earned
hope that is right

6 0

3 years ago

Please help !!!!thank you .

vekshin1

Answer:

414

Step-by-step explanation:

12 times 7, 12 times 15, 7 times 15

4 0

3 years ago

Each cube in this figure is a -centimeter cube. What are the dimensions of the prism? Select all that are true.

finlep [7]

Answer:

he first one and the third one

Step-by-step explanation:

5 0

3 years ago