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lana [24]
3 years ago
9

GETS BRAINLIEST AND 11 PTS

Mathematics
2 answers:
TiliK225 [7]3 years ago
6 0
I think the answer to this question is (C) $36.36.
Mazyrski [523]3 years ago
6 0
Hello, 

The surface area of a rectangular prism is:
A=2(xy+xz+yz), where x,y, and z are the dimenisions
We are told that she will spend .09 per in^2, x=11, y=6, and z=8 so we can say cost is:
C=2(9/100)(11*6+11*8+6*8)
C=(18/100)(66+88+48)
C=$36.36


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A ladder 25 feet long is leaning againstthe wall of a house. The base of the ladder ispulled away from the wall at a rate of 2 f
WITCHER [35]

Answer: a) -7/12 ft/s, -20 ft/s, -7 ft/s

              b) 527/24 Ft²/s

              c) 2/25 rad/sec

Step-by-step explanation:

a) b=7 ; a^2+b^2 = 25^2

             a^2+b^2 = 625

Differentiate w.r.t = 2a (da/dt) + 2b ( db/dt) = 0

                                    b(db/dt) = -a(da/dt)

As found from above put a=24 b=7,15 and 24. You will get the reuqired answer.

b) Area of the triangle = 1/2 * b*h

differentiate wrt to time leads to the following relation:

2dA/dt= h(db/dt)+b(dh/dt) \\dA/dt=24-49/24 = 527/24 Ft^2/sec

c) sin (Θ) = b/25

differentiate it again to give

cos(0.284)(d\theta/dt) =  (1/25) (db/dt) \\=2/25 rad/sec

                                 

                               

6 0
3 years ago
The equation is y=mx+b.
ycow [4]

Answer: both ways are acceptable

Step-by-step explanation: When writing equations of lines in this form,

we usually keep the "b" value or the constant term as a fraction.

However, if you prefer decimals, you can absolutely change

it to a decimal to visualize is better if you'd like, it's really your choice.

For example, if the equation of a line was y = -3/4x - 7/4, I could leave

it how it is or I could change the -7/4 to -1.75 giving me y = -3/4x - 1.75.

7 0
3 years ago
How do you solve this please help
dybincka [34]
Since the triangles are congruent the angles given are the same. If we know triangles have 180 degrees total within their angles then 44 + 55 - 180 = 81 degrees. Z=81
6 0
3 years ago
-1(2x +3) -2(2x-1) simplified
Verdich [7]

- 6x - 1

distribute parenthesis and collect like terms

- 2x - 3 - 4x + 2

= (- 2x - 4x) + (-3 + 2) = - 6x - 1


7 0
3 years ago
What is the measure of angle GXI?​
Solnce55 [7]

Answer: is there supposed to be a picture for it?

5 0
3 years ago
Read 2 more answers
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