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aleksley [76]
3 years ago
5

) Kira drew a circle with a radius of 20 inches and then another circle with a radius of 10 inches. What is the approximate diff

erence between the areas of these two circles?
Mathematics
2 answers:
olga2289 [7]3 years ago
8 0

Answer:942.48 aprox

Step-by-step explanation:el área del primero es 1256.64 del segundo es 314.16 y si lo restamos da 942.48

La formula del área es rxrxπ

spin [16.1K]3 years ago
5 0

Answer:

10 inches

Step-by-step explanation:

Because if you draw a circle and the inside you draw another circle the spaces between then is 10 inches cause 20 - 10= 10

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59 points!!!!!!!
MariettaO [177]
A=a+b
2h use this method when you do? - 14a + 200b + 16h = 1712
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3 years ago
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Given f(x) = 3x - 1 and g(x)= -x + 6, find f(-2) + g(5).<br> A. -6<br> B. 6<br> C. 8
marta [7]

Answer:

A. -6

Step-by-step explanation:

f(x)=3x-1\\\\

In order to find f(-2) we will plugin x=-2

f(-2) = 3(-2)-1\\f(-2)=(3\times(-2))-1\\f(-2)=-6-1

f(-2)=-7

g(x)=-x+6

In order to find g(5) we will plugin x=5

g(5)=-5+6

g(5)=1

f(-2)+g(5)\\=-7+1\\=-6

∴ f(-2)+g(5)=-6

5 0
3 years ago
2x + 7 =30, x = 3 true or false
RSB [31]

Answer:

False

Step-by-step explanation:

2x+7=30

2x=23

X= 23/2 or 11.5

X does not equal 3, therefore the statement is false

6 0
3 years ago
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On the highway, a car can travel 21 miles per gallon of gas. If the car travels for 4 hours on the highway at a rate of 65 miles
lora16 [44]

Answer:

12.4 gallons

Step-by-step explanation:

65 mph x 4 hours means the car went 260 miles. Divide by 21 to get the number of gallons. 12.4 gallons.

6 0
2 years ago
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P is the incenter of △JKL. Find m∠JKP.<br> &amp; can you please explain
dangina [55]

Answer:

  • m∠MKP = 35°

Step-by-step explanation:

<u>Incenter is the intersection of angle bisectors.</u>

  • ∠MJP = ∠OJP, ∠MKP = ∠NKP, ∠NLP = ∠OLP

<u>First find the value of x:</u>

  • 7x - 6 = 5x + 4
  • 7x - 5x = 4 + 6
  • 2x = 10
  • x = 5

<u>Find the angle MJP:</u>

  • 7*5 - 6 = 29°

<u>We know sum of interior angles of a triangle is 180°. Using this find the missing angle measure:</u>

  • 2*m∠MJP + 2*m∠NJP + 2*m∠MKP = 180°
  • m∠MJP + m∠NJP + m∠MKP = 90°
  • 29° + 26° + m∠MKP = 90°
  • m∠MKP = 90° - 55°
  • m∠MKP = 35°
7 0
3 years ago
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