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2 years ago

The Masons built a deck in their backyard. What is the area of the deck? (NO units)

Mathematics

1 answer:

ozzi2 years ago

4 0

Take the area of the rectangle as a whole and subtract the triangle piece.
We know the dimensions of the triangle are 3x4 so you can multiply it out using the formula to find the triangle's area to get 6.
Then you calculate the area of the whole rectangle. 10x12=120.
Finally subtract the triangle from the rectangle. 120-6=114.
The Area of the deck is 114.

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What is the answer to this equation<br> g + 5 = 16<br> g=?

stiv31 [10]

Answer:

G=11

Step-by-step explanation:

g+5=16

You need to get rid of the 5, so take away 5 from both sides.

16-5=11

g=11

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3 years ago

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827 divided by 1120

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The radius of a circle is equal to half of its diameter. What is the RADIUS of this circle?

Gekata [30.6K]

If the diameter is 18, the radius would be nine. Someone please tell me if I missed something.

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2 years ago

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What is the solution of the system ? <br> 2x+3y=4 <br> x-y=-3

fgiga [73]

Change the equation, x - y = -3, to isolate x or y and plug that new equation into the equation 2x + 3y = 4

I changed it to: x = y - 3
so
2(y - 3) + 3y = 4
2y - 6 + 3y = 4
5y - 6 = 4
5y = 4 + 6
5y = 10
y = 10/5
y = 2

then you plug that 2 into the equation x = y - 3 to get the value of x

x = (2) - 3
x = -1

you can check this by plugging the x and y values into the equation 2x + 3y = 4

2(-1) + 3(2) = 4
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3 years ago

One mole of a chemical element contains approximately 6.02 × 1023 atoms. How many atoms are present in 4.6 × 104 moles of oxygen

Paraphin [41]

Answer:

B. 2.77 · 10^28

Step-by-step explanation:

The total number of atoms is ...

(6.02·10^23 atoms/mol)·(4.6·10^4 mol) = (6.02·4.6)·10^(23+4) atoms

≈ 27.7·10^27 atoms

≈ 2.77·10^28 atoms . . . . . . put in scientific notation form

_____

Scientific notation has one non-zero digit to the left of the decimal point and the exponent adjusted accordingly.

Your calculator can help you figure this out. If necessary, put the display into scientific notation mode. (For numbers this size, it is usually not necessary.)

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2 years ago

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