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3 years ago

Which number can be inserted in the box to make the given equation true?

Mathematics

1 answer:

Alina [70]3 years ago

7 0

Answer:

Step-by-step explanation:

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A group of students are planning a mural at a wall the rectangular wall has dimensions of (6x+7) by (8x+5) and they are planning

zvonat [6]

Answer: $46x^2+73x+15$

Step-by-step explanation:

The area of a rectangle can be calculated with the formula:

$A=lw$

l: the length of the rectangle.

w: the width of the rectangle.

The area of the remaning wall after the mural has been painted, will be the difference of the area of the wall and the area of the mural.

Knowing that the dimensions of the wall are $(6x+7)$ by $(8x+5)$ , its area is:

$A_w=(6x+7)(8x+5)\\\\A_w=48x^2+30x+56x+35\\\\A_w=48x^2+86x+35$

As they are planning that the dimensions of the mural be $(x+4)$ by $(2x+5)$ , its area is:

$A_m=(x+4)(2x+5)\\\\A_m=2x^2+5x+8x+20\\\\A_m=2x^2+13x+20$

Then the area of the remaining wall after the mural has been painted is:

$A_{(remaining)}=A_w-A_m\\\\A_{(remaining)}=48x^2+86x+35-(2x^2+13x+20)\\\\A_{(remaining)}=48x^2+86x+35-2x^2-13x-20\\\\A_{(remaining)}=46x^2+73x+15$

8 0

4 years ago

I will give out BRAINLIEST for the correct answer!

earnstyle [38]

Answer:

Step-by-step explanation:

8 0

3 years ago

Someone explain how this is answer C? Big points!

Snowcat [4.5K]

Answer:

C. x = 15 * sin 18°

Step-by-step explanation:

sin A = Opposite / Hypotenuse

sin 18° = x / 15

x = 15 * sin 18°

4 0

3 years ago

the names of nine boys and two girls are in a hat. what is the probability of first drawing a girls name and then a boys name fr

lara [203]

18/121 shoul be the answer

5 0

3 years ago

Read 2 more answers

Can someone help out?

Tamiku [17]

Answer:

152.9 ft

Step-by-step explanation:

14*8=112

8*4=32

112+32+8.9=152.9

8 0

3 years ago