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rewona [7]
3 years ago
10

Jenny wants to buy a new dress for her first school dance.

Mathematics
2 answers:
Lisa [10]3 years ago
6 0

Answer:

Jenny owe her sister  9.3\\ dollars

Step-by-step explanation:

Jenny owe her sister

25.63 - 16.33\\= 9.3\\ dollars

Slav-nsk [51]3 years ago
5 0
No, she will still owe $9.30.                    $25.63 - $16.33= $9.30
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A manufacturer cuts squares from the corners of a rectangular plece of sheet metal that measures 2 inches by 7 inches (see Figur
Vladimir79 [104]

Answer:

The value of x that maximizes the volume enclosed by this box is 0.46 inches

The maximum volume is 3.02 cubic inches

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

The volume of the open-topped box is equal to

V=LWH

where

L=(7-2x)\ in\\W=(2-2x)\ in\\H=x\ in

substitute

V=(7-2x)(2-2x)x

Convert to expanded form

V=(7-2x)(2-2x)x\\V=(14-14x-4x+4x^{2})x\\V=14x-14x^2-4x^2+4x^{3}\\V=4x^{3}-18x^{2} +14x

using a graphing tool

Graph the cubic equation

Remember that

The domain for x is the interval -----> (0,1)

Because

If x>1

then

the width is negative (W=2-2x)

so

The maximum is the point (0.46,3.02)

see the attached figure

therefore

The value of x that maximizes the volume enclosed by this box is 0.46 inches

The maximum volume is 3.02 cubic inches

8 0
3 years ago
Question 16
Vadim26 [7]

Answer: 175

Step-by-step explanation: total = x + 5y dollars and dollars = 300 so

x + 5y = 300 then since we know y =  200 we can substitute that

x + 5(200) = 300 then subtract x from 200

x + 5(200 - x) = 300 now solve for x

x + 5(200) + 5(-x) = 300 we know 5 times 200 is 1000

x + 1000 - 5x = 300 then subtract 5x - x = -4x

-4x + 1000 = 300 switch around 1000 and 300

-4x = 300 - 1000 subtract 300 - 1000 = -700

-4x = -700 multiply

x = -700/(-4) then finish up and solve

x = 175

hope this helps please mark brainliest if you can

4 0
3 years ago
Today only, a desk is being sold at a 29% discount. The sale price is $213.
blondinia [14]

Answer:

$274.77

Step-by-step explanation:

213.00 ÷29 =61.769999 then add 213.00 plus 61.76

I actually rounded up maybe I shouldn't of then answer would be $274.76. im not postive this is correct .

4 0
2 years ago
Answer choices
Anettt [7]
The answer is D because is you add a one under the 9 you get 9/1 x 2/3 and you can just multiply straight away and get 18/3 but if you need to simplify more you get 6
5 0
2 years ago
Read 2 more answers
What is the volume of the rectangular prism?
Nataly_w [17]

Answer:

C. 72 cm^3

Step-by-step explanation:

Volume of rectangular prism is length times width times height

3 0
3 years ago
Read 2 more answers
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