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sveticcg [70]
3 years ago
15

You have a 4 in. X 6in. family picture that you want to resize. You can choose from a 16 in. X 20 in. or an 18 in. X 24 in. Whic

h size will keep more of the original picture?a 4 inch

Mathematics
2 answers:
skad [1K]3 years ago
3 0

Answer:

24/18=1.333

20/16=1.25

6/4=1.5 (the ratio to achieve9

1.333 is more close to 1.5 than 1.25 (11% difference compared to 17%)

Step-by-step explanation:

soldier1979 [14.2K]3 years ago
3 0

Answer:

16 in. X 20 in will keep more.

Step-by-step explanation:

Length of picture = 4 inches

Breadth of picture = 6 inches

Area of picture=length  \times breadth

                        =4 \times 6

                        =24 inches^2

Length of frame 1 = 16 inches

Breadth of frame 1 = 20 inches

Area of frame 1 = 16 \times 20 = 320 inches^2

So, % of picture can fit in frame 1= \frac{\text{original picture area }}{\text{Frame 1 area }} \times 100

                                                   = \frac{24}{320} \times 100

                                                   = 7.5 %

Length of frame 2 = 18 inches

Breadth of frame 2 = 24 inches

Area of frame 2 = 18 \times 24 = 432 inches^2

So, % of picture can fit in frame 2 = \frac{\text{original picture area }}{\text{Frame 1 area }} \times 100

                                                   = \frac{24}{432} \times 100

                                                   = 5.56 %

Since % of picture can fit in frame 1 is more than frame 2 .

So, 16 in. X 20 in will keep more.

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Given:

The equation of ellipse is

\dfrac{(x+4)^2}{25}+\dfrac{(y-1)^2}{16}=1

To find:

The length of the minor axis.

Solution:

The standard form of an ellipse is

\dfrac{(x-h)^2}{a^2}+\dfrac{(y-k)^2}{b^2}=1      ...(i)

where, (h,k) is center, if a>b, then 2a is length of major axis and 2b is length of minor axis.

We have,

\dfrac{(x+4)^2}{25}+\dfrac{(y-1)^2}{16}=1      ...(ii)

On comparing (i) and (ii), we get

b^2=16

Taking square root on both sides.

b=\pm 4

Consider only positive value of b because length cannot be negative.

b=4

Now,

Length of minor axis = 2b

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Therefore, the correct option is B.

8 0
2 years ago
The student council is selling cupcakes at the school play. ​The cost to ​make the cupcakes is a fixed $75 plus $0.17 per cupcak
dedylja [7]

Answer:

C = 75 + 0.17x and R = 2x

2x - (75 + 0.17x) > 0

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Step-by-step explanation:

The cost to make the cupcakes is a fixed $75 plus $0.17 per cupcakes made and the selling price of each cupcake is $2.00.

Part A: Now, the equation for the cost, C, for making x cupcakes is  

C = 75 + 0.17x ......... (1)

Again the equation for the revenue, R, from selling x cupcakes is

R = 2x ............ (2)

Part B: So, the inequality that could be solved to find the number of cupcakes, x, that must be made and sold to make a profit is  

R - C > 0

2x - (75 + 0.17x) > 0 ......... (3)

Part C: Solving inequality (3) we get

(2 - 0.17)x > 75

⇒ x > 40.98

⇒ x ≥ 41 {Since, x can not be a fraction}

(Answer)

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3 years ago
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The percentage would then be:
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Therefore the answer is 15%.

Hope it helps!
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Answer:

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Step-by-step explanation:

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