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Julli [10]
3 years ago
12

1. X-2y7-8 xty2 1 X-2y>-8 X+y>1

Mathematics
1 answer:
Crank3 years ago
4 0

Answer:

x+y>1

Step-by-step explanation:

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Some help with the circle problem would be much aprecated.
Oksana_A [137]
Try this solution:
for the circle A: circumference=6π, area=9π
for the circle B: circumference=12π, area=36π

PS. formula for circumference is 'L=2πr', for area is 'S=πr²'.
8 0
2 years ago
On Tuesday, Frankie had $154.50 in his bank account. On Wednesday, he withdrew $65.50 from his account. After depositing $275.25
myrzilka [38]
The answer is C (^‿^✿)

All you have to do is subtract 154.50 by 65.50 and add that answer to 275.25
3 0
2 years ago
Which equation can be solved using only natural numbers
Ad libitum [116K]

Answer:

C

Step-by-step explanation:

Natural numbers are numbers which are positive whole numbers greater than 0. This includes 1, 2, 3, ...etc.

To determine, solve each equation.

A. x=0

B. x = 1/3

C. x=3

D. x=-4, 4

Only C is a natural number.

4 0
3 years ago
Martin is cleaning the tires of his bicycle. He notices that his bicycle tire has a radius of 8 inches. How much bigger is the a
algol [13]

Strange question, as normally we would not calculate the "area of the tire." A tire has a cross-sectional area, true, but we don't know the outside radius of the tire when it's mounted on the wheel.

We could certainly calculate the area of a circle with radius 8 inches; it's

A = πr^2, or (here) A = π (8 in)^2 = 64π in^2.

The circumference of the wheel (of radius 8 in) is C = 2π*r, or 16π in.

The numerical difference between 64π and 16π is 48π; this makes no sense because we cannot compare area (in^2) to length (in).

If possible, discuss this situatio with your teacher.



8 0
2 years ago
Which of these is equal to cos 19°? A) sin 71° B) sin 81° C) cos 71° D) cos 81°
Over [174]
Cos α = sin (90-α) so cos 19 = sin 90-19 = sin 71
7 0
2 years ago
Read 2 more answers
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