2 years ago

If we know the area of this base, we'll know how many cubes can fill the bottom layer. We can find the area of the rectangle

Mathematics

2 answers:

katrin2010 [14]2 years ago

7 0

It’s 30 inches !!!!!

icang [17]2 years ago

3 0

Answer:

Step-by-step explanation:

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What is value of K? It's not multiple choice.

larisa86 [58]

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Step-by-step explanation:

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3 years ago

Amy wants to carpet a room that is 12 feet by 8 feet. How many square yards of carpet will she need to complete the room?

adelina 88 [10]

Assuming that the room is rectangle and carpet is rectangle
area=legnth times width
legnth=longer than width
12 is longer than 8
12ft=legnth
8ft=width

now convert to yards
1 yard=3 feet
1 foot=1/3 yard
12 ft times 1/3=4yards
8 ft times 1/3=8/3yards
multiply

area=4 tiimes 8/3
area=32/3
area=10 and 2/3 square yards

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3 years ago

When the sum of 5 and three times a positive number is subtracted from the square of the number, 0 results. Find the number.

Juliette [100K]

$x-the\ number\\\\x^2-(5+3x)=0\\\\x^2-5-3x=0\\\\x^2-3x-5=0$

$Use\ the\ quadratic\ formula:\\a^2x+bx+c=0\\\\\Delta=b^2-4ac\\\\if\ \Delta > 0\ then\ x_1=\dfrac{-b-\sqrt\Delta}{2a}\ and\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\if\ \Delta=0\ then\ x_0=\dfrac{-b}{2a}\\\\if\ \Delta < 0\ then\ no\ solution$

$x^2-3x-5=0\\\\a=1;\ b=-3;\ c=-5\\\\\Delta=(-3)^2-4\cdot1\cdot(-5)+3+20=29 \ \textgreater \ 0\\\\\sqrt\Delta=\sqrt{29}\\\\x_1=\dfrac{3-\sqrt{29}}{2\cdot1}=\dfrac{3-\sqrt{29}}{2} \ \textless \ 0\\\\x_2=\dfrac{3+\sqrt{29}}{2\cdot1}=\dfrac{3+\sqrt{29}}{2} \ \textgreater \ 0$

$Answer:\ \boxed{x=\dfrac{3+\sqrt{29}}{2}}$

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2 years ago

Two numbers have a sum of 68 and a difference of 46

monitta

Answer:

57 and 11

Step-by-step explanation:

57+11=68

57-11=46

3 0

2 years ago

Read 2 more answers

A taxi charges $4 plus $.25 per km

drek231 [11]

It will cost

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2 years ago