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3 years ago

4 ft - 2 and 7/12 ft

Mathematics

1 answer:

Nutka1998 [239]3 years ago

5 0

Answer:

2.83 ft

Step-by-step explanation:

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the length and width of a rectangle are 19.5 cm and 14 cm, respectively. calculate the minimum and maximum possible areas of eac

Ghella [55]

Can you please explain your question ? i cant quite understand the areas of object part

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3 years ago

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Are these proportional?

Hitman42 [59]

Step-by-step explanation:

2:3 and 4:6 is proportional because if you simplify 4:6 it will equal 2:3.

1:4 and 6:18 is not proportional because if you simplify you would not get 1:4.

3:5 and 1:3 is not proportional because you can't simplify it any further and they do not equal each other.

2:5 and 8:20 is proportional because if you take 2:5 and multiply each number by 4 you would get 8:20.

4:9 and 12:27 is proportional because you can simplify 12:27 and get 4:9.

6:15 and 2:5 is proportional because you can multiply 2:5 by 3 and get 6:15.

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3 years ago

Annie is framing a photo with a length of 6 inches and a width of 4 inches. The distance from the edge of the photo to the edge

Ede4ka [16]

Answer:

Part a) The quadratic function is $4x^{2} +20x-39=0$

Part b) The value of x is $1.5\ in$

Part c) The photo and frame together are $7\ in$ wide

Step-by-step explanation:

Part a) Write a quadratic function to find the distance from the edge of the photo to the edge of the frame

Let

x----> the distance from the edge of the photo to the edge of the frame

we know that

$(6+2x)(4+2x)=63\\24+12x+8x+4x^{2}=63\\ 4x^{2} +20x+24-63=0\\4x^{2} +20x-39=0$

Part b) What is the value of x?

Solve the quadratic equation $4x^{2} +20x-39=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem

we have

$4x^{2} +20x-39=0$

$a=4\\b=20\\c=-39$

substitute in the formula

$x=\frac{-20(+/-)\sqrt{20^{2}-4(4)(-39)}} {2(4)}$

$x=\frac{-20(+/-)\sqrt{1,024}} {8}$

$x=\frac{-20(+/-)32} {8}$

$x=\frac{-20(+)32} {8}=1.5\ in$ -----> the solution

$x=\frac{-20(-)32} {8}=-6.5\ in$

Part c) How wide are the photo and frame together?

$(4+2x)=4+2(1.5)=7\ in$

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3 years ago

What value of x makes this equation true?

yulyashka [42]

Answer: C

Step-by-step explanation:

1.2x-10=0.2x+14

subtract 0.2x

1.0x-10=14

add 10

x=24

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3 years ago

Ed signed up for a weight-loss program. The table shows his weight in pounds of the terms of the number of weeks since he began

il63 [147K]

Ed : (0,205)(4,197)
slope(m) = (197 - 205) / (4 - 0) = -8/4 = -2

y = mx + b
slope(m) = -2
(0,205)...x = 0 and y = 205
time to sub
205 = -2(0) + b
205 = b
equation is : y = -2x + 205...so Ed loses 2 lbs per week

Eric :
y = -1.5x + 200...so Eric loses 1.5 lbs per week

when they started, Ed weighed 205 lbs and Eric weighed 200 lbs

* of the two, Eric loses fewer lbs per week. When the two began their respective weight-loss programs, Ed was heavier by 5 lbs.

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4 years ago

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