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Pani-rosa [81]
3 years ago
8

15 points!!! Please!!!! I NEED HELP!!!

Mathematics
2 answers:
Katena32 [7]3 years ago
6 0
A) we have to calculate the areas of the three triangles and the rectangle.
Area triangle=(base x height) / 2
Area (Triangle₁)=(1.5 ft * 1 ft)/2=0.75 ft²
Area (triangle₂)=(2 ft * 1.5 ft)/2=1.5 ft²
Area (triangle₃)=(1 ft * 0.75 ft) / 2=0.375 ft₂

Area rectangle=(base x height=
Area (rectangle)=5 ft * 0.75 ft=3.75 ft₂

Total area=area of the triangles + area of the rectangle.
Total area=(0.75 ft²)+(1.5 ft²)+(0.375 ft²)+(3.75 ft²)=6.375 ft²

solution: 6.375 ft²

b)
Gray paint:
Area of the triangles=(0.75 ft²)+(1.5 ft²)+(0.375 ft²)=2.625 ft²

1/4 gallon------------------45 ft²
x--------------------------2.625 ft²

x=(1/4 gallon * 2.625 ft²)/ 45 ft²=0.01458... gallons

Two hands=2*(0.01458 gallons)=0.029 gallons≈0.03 gallons.


black paint:
Area of rectangle=3.75 ft²

1/4 gallons---------45 ft²
x------------------3.75 ft²

x=(1/4 gallons * 3.75 ft²) / 45 ft²=0.0208...gallons

two hands=2*(0.0208 gallons)=0.04166 gallons≈0.04 gallons
crimeas [40]3 years ago
4 0
LetterA) \frac{1}{2}(1.5 ft)(1 ft) + \frac{1}{2}(2 ft)(1.5 ft) + \frac{1}{2}(1 ft)(0.75 ft) + (0.75 ft) (5 ft) = 0.75 ft² + 1.5 ft² + 0.375 ft² = 6.375 ft² ......... LetterB) pyramid area: 0.75 ft² + 1.5 ft² + 0.375 ft² = 2.625 ft² ......... pyramid paint: 2 (2.625 ft²) ( \frac{1 quart}{45 ft^2} ) = 0.12 quart ......... base area: 3.75 ft²; base paint: 2 (3.75 ft²) ( \frac{1 quart}{45 ft^2} ) = 0.17 quart
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15x - 10 = -9x + 2 <br> please help me !!!!!
DerKrebs [107]
15x - 10 = -9x + 2

15x +9x -10 = -9x + 9x + 2

15 x + 9x - 10 + 10 = 2 + 10

15 x + 9 x = 2 + 10

24x = 12

24x/24 = 12/24

x = 1/2

hope this helps
6 0
3 years ago
A local art studio offers a new session of drawing classes every 12 days. A competing art studio offers a new session of drawing
Artist 52 [7]
To solve this we are going to find the least common multiple of 8 and 12.
Remember that the least common multiple (LCM) of tow or more numbers is the smallest positive number that is multiple of those two or more numbers. 
To find our LCM we are going to list the multiples of 8 and 12, and then, we are going to select the first common number in those lists:

Multiples of 8: 8,16,24,32,40,....
Multiples of 12: 12,24,36,48,...

Notice that the first common value between the two list is 24, and that is precisely the number of days it will take for drawing sessions to coincide.

We can conclude that after 24 days both<span> art studios will start a new drawing session on the same day.</span>
5 0
3 years ago
F(x) = x2 + 10<br> What is the average rate of chan<br> hange of f over the interval [-2, -1]?
Readme [11.4K]

The average rate of change is given by [f(b) - f(a)]/(b - a), where a and b represent the interval [a, b].

Let a = -2

Let b = -1

[(-1)^2 + 10 - ((-2)^2 + 10)]/(-1 -(-2))

[1 + 10 - (4 + 10)]/(-1 + 2)

[1 + 10 -4 -10]/(1)

[1 - 4]/(1)

-3/1

Answer: -3

5 0
2 years ago
Bryan is buying notebooks and pens at an office supply store. Notebooks cost $3.59 and pens cost $1.49. He can spend up to $13 o
nordsb [41]
3.59x+1.49y=13.00
that should help
4 0
2 years ago
Read 2 more answers
Please help solve for b.
Zanzabum
Subtract a from both sides of the equation.

b=−a+14

6 0
3 years ago
Read 2 more answers
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