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MrRa [10]
1 year ago
14

A 13 ​-ft ladder is leaning against a house when its base starts to slide away. By the time the base is 12 ft from the​ house, t

he base is moving away at the rate of 15 ​ft/sec.
a. What is the rate of change of the height of the top of the​ ladder?
b. At what rate is the area of the triangle formed by the​ ladder, wall, and ground changing​ then?
c. At what rate is the angle between the ladder and the ground changing​ then?
Mathematics
1 answer:
VARVARA [1.3K]1 year ago
8 0
I think the answer is B because all the air other answers are incorrect
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Answer:

Ok I will!  Did it.

Step-by-step explanation:

3 0
2 years ago
4x+5y=20 write this equation in slope intercept form
BartSMP [9]
4x+5y=20 in slop intercept form would be y= (-4/5)x + 4. 

Slope intercept form is y=mx+b. So you would first subtract 4x from both sides. This ends up being 5y= -4x +20. Then divide both sides by 5. This gets you y= (-4/5)x +4. 
4 0
2 years ago
Read 2 more answers
Simplify the expression. <br> -4 + 6 • (-1) <br> A. -10 <br> B. -2 <br> C. 2 <br> D. 10
viva [34]

Answer:

- 10

Step-by-step explanation:

Order of operations:  PEMDAS

Multiply first then add

-4 + -6 = -10

8 0
2 years ago
Calculate the areas of these rectangles
kykrilka [37]
  • <em>Answer:</em>

<em>A(a) = 24 cm²</em>

<em>A(b) = 40.04 cm² ≈ 40 cm²</em>

  • <em>Step-by-step explanation:</em>

<em>Hi there ! </em>

<em>area formula (rectangle)</em>

<em>A = l × w</em>

<em>A(a) = 8cm × 3cm = 24 cm</em>

<em>A(b) = 5.2cm × 7.7cm = 40.04 cm² ≈ 40 cm²</em>

<em>Good luck !</em>

8 0
2 years ago
Caleb and Sergio stacked boxes on a shelf. Caleb lifted 14 boxes and Sergio lifted 12 boxes. The boxes that Sergio lifted each w
scoundrel [369]

Answer:

14 ( c ) = Caleb's

12 ( c + 10 ) = Sergio's


Step-by-step explanation:

Caleb lifted 14 boxes so you multiply 14 by c which is the weight of each box and for Sergio he lifted 12 boxes although his weighed 10 pounds more so you add 10 to c which would equal c + 10 multiplied by 12

hope this did not confuse you

5 0
3 years ago
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