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3 years ago

Help guysss :((( please it's due Monday :((((((((((( pleaseeeeeeweeeee

Mathematics

2 answers:

yanalaym [24]3 years ago

4 0

Left over is 456 minus total of A+B+C
456-334=122
C d are equal so 122/2=61

galben [10]3 years ago

3 0

Try this: Add up the given widths of the first 3 bookcases, in cm. This will be a constant. Now write "-2w" after that sum, to represent two more bookcases of unknown widths w. Finally, use the inequality symbol (less than or equal to) and the given wall length to complete this inequality.

Solve it for w, writing your answer as another inequality.

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The area of a circle is 132.7 square cm. Find the diameter.

Julli [10]

Answer:

The diameter of the circle is 13.

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2 years ago

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The diameter of a semicircle is 8 miles. What is the semicircle's perimeter? Use 3.14 for .

wlad13 [49]

Answer:

41.13 cm

Step-by-step explanation:

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2 years ago

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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?

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

5 0

3 years ago

Use the digits 0 - 9 to fill in the blank. <br><img src="https://tex.z-dn.net/?f=243%20%5Cfrac%7B1%7D%7B5%7D%20%20%3D%20blank" i

Tresset [83]

Answer:

use 0-9 to fill in blanks

Step-by-step explanation:

8 0

3 years ago

Alice is paying her bill at a restaurant. The tax on the cost of her meal is 5%. She decides to leave a tip of 20% of the cost o

AnnyKZ [126]

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6 0

2 years ago