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shutvik [7]
2 years ago
15

#3 a and b both help answer

Mathematics
1 answer:
quester [9]2 years ago
5 0

Answer:

$9.96, 125

Step-by-step explanation:

2.99x4= 11.96-2.00=9.96

15x3=45+20x4= 125

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A woman wishes to rent a house within 9 miles of her work. If she lives x miles from her work, her transportation cost will be c
I am Lyosha [343]

Answer:

the woman has to live 1 mile from work to minimize the expenses

Step-by-step explanation:

Given the data in the question;

the distance within 9 miles ⇒ 0 < x > 9

Total costs Q = cx + 4c/( x + 1)

costs should be minimum  ⇒ dQ/dx = 0

⇒ d/dx [ cx + 4c/( x + 1) ] = 0

⇒ ( x + 1)² = 4

take square root of both side

√[ ( x + 1)² ] = √4

x + 1 = 2

x = 2 - 1

x = 1

Therefore, the woman has to live 1 mile from work to minimize the expenses

5 0
3 years ago
You are diving. It’s represented by h(t)= -2.5t + 35. What’s the height of the platform ___________ft? Show steps plz... NEED HE
VashaNatasha [74]

Answer:

welll the answer is 32.5 as used in the expression

Step-by-step explanation:

-2.5 plot it on a line graph then cooridinate the x and y axis to 35 and add the summ up to get 32.5

7 0
2 years ago
Read 2 more answers
Let f be an exponential function and g be a logarithmic function.
love history [14]

Good evening ,

______

Answer:

1) (f+g)(1) = e

2) (fg)(1) = 0

3) (3f)(1) = 3e

___________________

Step-by-step explanation:

1) (f+g)(1) = f(1) + g(1) = e¹ + log1 = e + 0 = e.

2) (fg)(1) = f(1) × g(1) = e¹ × log(1) = e¹ × 0 = e × 0 = 0.

3) (3f)(1) = 3×f(1) = 3×e¹ = 3e.

:)

8 0
3 years ago
How do you add and subtract fractions??
Semenov [28]
To add fractions they're suppose to have the same base or denominator then u add the top

To subtract it's the same but u subtract the top
5 0
3 years ago
Read 2 more answers
Find the dimensions of a rectangle with a perimeter of 52cm if it’s length is 4cm more than its width
Zina [86]
So the perimeter(P) of a rectangle would be:
P= 2L+2W
L being the length and W being the width.
The problem says the length is 4cm more than the width, so L= 4+W.
So if we substitute L with 4+W, we get:
P= 2(4+W) + 2W
Use the Distributive Property
P= 8+2W+2W
Combine like terms
P=8+4W
Since we're given the perimeter, we could replace P with 52. So:
52=8+4W
Subtract 8 to both sides
44=4W
Divide 4 to both sides
11=W
Therefore, the width is 11cm
And since the length is 4cm more than the width, we could add 4cm to 11cm to find that the length is 15cm
Thus, the dimensions of the rectangle are 15cm by 11cm
5 0
3 years ago
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