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Irina18 [472]
3 years ago
11

Write the equation of a circle that has a center at the origin and a radius with a length of 4 inches

Mathematics
2 answers:
joja [24]3 years ago
7 0

Answer:

(x)^2 + (y)^2 = 4^2

Step-by-step explanation:

The standard form of an equation  for a circle is

(x-h)^2 + (y-k)^2 = r^2

where (h,k) is the center and r is the radius

Since the center is 0,0  and the radius is 4

(x)^2 + (y)^2 = 4^2

VMariaS [17]3 years ago
4 0

Answer:

x^2+y^2=16

Step-by-step explanation:

x^2+y^2=r^2 is the mother function of the equation of a circle centered at r with radius r

since r is defined to be 4 and 4^2 is 16 therefore, the equation would then be

x^2+y^2=16

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The measure of angle 4 is 45. If angle 4 is congruent to angle 1, what is the measure of angle 5?
mr_godi [17]
The answer is A) 45°. This is because angles 1 and 5 are vertical angles. Vertical angles are congruent.
8 0
3 years ago
For the given word problem, identify the rate of change. Gasoline at a particular gas station costs $2.78 per gallon. If Cory bu
zhenek [66]

Answer:

Cory bought 6.47 gallons

rate of change is $2.78 per gallon

Step-by-step explanation:

cost of gas per gallon = $2.78

it means that if one buy 1 gallon he will have to pay $2.78 and similary for each increase in 1 gallon of gallon gas he will have to pay $2.78.

Thus, rate of change is cost of gas per gallon as cost to buy gas changes with the change in quantity of gallon.

Let the quantity of gas bought be x gallon.

Total cost for x gallons = cost of gas per gallon*x = 2.78x

Given that total money paid by him is $18

2.78x = 18

x = 18/2.78 = 6.47

Thus, Cory bought 6.47 gallons

rate of change is $2.78 per gallon

4 0
3 years ago
If the angle measures of a triangle can be expressed as 4x + 6, 7x-14, and 48-x, what is the value of the smallest angle measure
masha68 [24]

Answer: It will be 34

4 0
2 years ago
What is 122.10 rounded to the nearest whole number?
I am Lyosha [343]

Answer:

1

Round up if this number is greater than or equal to

5

and round down if it is less than

5

122

Hope I helped

6 0
3 years ago
(a2 − 6) and (a2 + 4) are the factors of
morpeh [17]
Just multiply them together and get a4-2a2-24.
(a2-6)(a2+4)
F: a4
O:4a2
I:-6a2
L:-24
Add together
a4-2a2-24
6 0
3 years ago
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