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Dahasolnce [82]
3 years ago
12

Find the area and circumference of the circle. Use 3.14 for A.

Mathematics
1 answer:
Kaylis [27]3 years ago
8 0

Answer:

A = 63.59

C = 28.26

Step-by-step explanation:

r = 4.5

Area of a circle:

A = πr²

A = 3.14(4.5²)

A = 3.14(20.25)

A = 63.59

Circumference:

C = 2πr

C = 2(3.14)(4.5)

C = 28.26

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An adult and 5 children rent a skates. it costs $4 per adult for skates and a total of $16
Elenna [48]

Answer:

$2.20 per child

Step-by-step explanation:

16-4=11

11/5=2.2


3 0
3 years ago
The area of the triangle is eqaula to the sqare show that x²-3x-2=0​
agasfer [191]

Answer:

Step-by-step explanation:

Area of square = area of triangle

side*side = \dfrac{1}{2}b*h\\\\\\x*x=\dfrac{1}{2}*(x+1)(x+2)\\x^{2}=\dfrac{1}{2}[x*x +x*2+1*x+1*2]\\\\\\x^{2}=\dfrac{1}{2}[x^{2}+2x+x+2]\\\\\\x^{2}=\dfrac{1}{2}[x^{2}+3x+2]\\\\\\Multiply \ both \ sides \ by \ 2\\\\2x^{2}=x^{2}+3x+2\\\\2x^{2}-x^{2}-3x-2 = 0

x² - 3x - 2 = 0

8 0
2 years ago
How far apart are the foci of an ellipse with a major axis of 26 feet and a minor axis of 24 feet?
aleksley [76]
<span>Let the major axis = 2a , and the minor axis = 2b
∴ a = 26/2 = 13    and   b = 24/2 = 12
and the equation of foci:
c² = a² - b²
    = 13² - 12² = 169 - 144 = 25
∴ c = √25 = 5

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</span>
3 0
3 years ago
Read 2 more answers
Please help ASAP give you 20 points and brainiest
GuDViN [60]

Answer:

Total charge= -25

Step-by-step explanation:

Given :

Charges of some ions

Aluminium    +3

Phosphate     -3

Chloride         -1

Silver               +1

To find total charge on 8 phosphate,7 chloride and 2 Aluminium atoms

Aluminium    +3 × 2 =+6

Phosphate     -3 × 8 = -24

Chloride         -1 × 7 = -7

total charge=

+6-24-7 =+6 -31

= -25

6 0
3 years ago
I need help PLEASE!!!!!!!!
PIT_PIT [208]

Answer:

Step-by-step explanation:

<h2>the letter in the problem is the missing number</h2>
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3 years ago
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