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aleksandrvk [35]
3 years ago
9

A pair of sunglasses cost $26 during the summer sale. If

Mathematics
1 answer:
Marta_Voda [28]3 years ago
7 0

Answer:2.18$

Step-by-step explanation: 26 + 7% tax is 27.82 so 30 - 27.82 = 2.18$

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What 2 numbers add to get 29 but when you subtract you get 1?
stiks02 [169]

Answer:

15 and 14

Step-by-step explanation:

15+14=29

15-14=1

3 0
2 years ago
A family wants to build a rectangular garden on one side of a barn. If 600 feet of fencing is available to use, then what is the
vovangra [49]

Answer: (A) A=300l-l^{2}

               (B) Length varies between 1 and 150

               (C) Largest area is 22500ft²

Step-by-step explanation: Suppose length is l and width is w.

The rectangular garden has perimeter of 600ft, which is mathematically represented as

2l+2w=600

Area of a rectangle is calculated as

A=lw

Now, we have a system of equations:

2l+2w=600

A=lw

Isolate w, so we have l:

2w=600-2l

w = 300 - l

Substitute in the area equation:

A = l(300 - l)

A = 300l - l²

(A) <u>Function of area in terms of length is given by </u><u>A = 300l - l²</u>

(B) The practical domain for this function is values between 1 and 150.

(C) For the largest area, we need to determine the largest garden possible. For that, we take first derivative of the function:

A' = 300 - 2l

Find the values of l when A'=0:

300 - 2l = 0

2l = 300

l = 150

Replace l in the equation:

w = 300 - 150

w = 150

Now, calculate the largest area:

A = 150*150

A = 22500

<u>The largest area the fence can enclose is </u><u>22500ft².</u>

4 0
2 years ago
Annie buys some greeting cards. Each card costs $1.75. She pays with a twenty dollar bill.
zaharov [31]

Answer:

Step-by-step explanation:

7 0
3 years ago
I need this fast please help me
Ahat [919]

Step-by-step explanation:

C. y= -5x + 27

D. y=2x - 15

thats all

5 0
2 years ago
Read 2 more answers
18/24 = b/12 <br><br> Solve the proportion:
Lemur [1.5K]

Answer:

b=9

Step-by-step explanation:

18/24=3/4

3/4=b/12

cross product

4*b=3*12

4b=36

b=36/4

b=9

3 0
3 years ago
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