3 years ago

During the summer, you work 30 hours per week at

Mathematics

1 answer:

marta [7]3 years ago

3 0

30(8.75) +11x = 400 X=12.5

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The area of a triangle is 54 cm2. The base is 18 cm. What is the height of the triangle? Let h represent the height of the trian

Margaret [11]

Hi,

h = 2 a/b so our answer would be 6. The height of the triangle is 6.

Have a great day!

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3 years ago

76 cm a 52 cm Find the area of the regular pentagon (the answer has one digit after the decimal point)

alekssr [168]

Answer:

98.8 cm²

Step-by-step explanation:

Hi there!

$A=\frac{1}{2} Pa$ where P is the perimeter of the pentagon and a is the apothem (the line going from the center of the pentagon one edge)

1) Find the perimeter

$P=5l$ where l is the side length

Plug in the side length 7.6 cm

$P=5(7.6)\\P=38$

Therefore, the perimeter of the pentagon is 38 cm.

2) Find the area

$A=\frac{1}{2} Pa$

Plug in the perimeter (38) and the apothem (5.2)

$A=\frac{1}{2} (38)(5.2)\\A=\frac{1}{2} (38)(5.2)\\A=\frac{1}{2} (197.6)\\A=98.8$

Therefore, the area of the pentagon is 98.8 cm².

I hope this helps!

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3 years ago

(time limit!) what is the volume below? A) 112 B) 224 C) 784 D) 896

Radda [10]

To find a volume of a cylinder we use the following formula:
$v = \pi {r}^{2} h$
Plug in the values:

$v = \pi \times {8}^{2} \times 14$
Take the square:
$v = \pi \times 64 \times 14$
Multiply the numbers:
$v =896 \pi {m}^{2}$

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3 years ago

Solve the equation -4x+12=-4 for x .

mihalych1998 [28]

-4x +12 -12 = -4 -12
-4x = -16
x = 4

4 0

3 years ago

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Serjik [45]

Answer:

(-2, -5)

(-1, -2)

(0, 1)

(1, 4)

(2, 7)

Step-by-step explanation:

Substitute x with each number and solve equation.

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2 years ago