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uranmaximum [27]
3 years ago
5

Is 5/2 a rational number

Mathematics
1 answer:
Vesnalui [34]3 years ago
8 0

Answer:

Yes.

Step-by-step explanation:

5/2 has an ending decimal.

5/2 = 2.5

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Giselle pays $220 in advance on her account at the athletic club. Each time she uses the club,
ale4655 [162]

Answer:

y=220-15x

Step-by-step explanation:

Let x represent the number of times Giselle uses the athletic club and y represent money left in account.

We have been given that each time she uses the club,  $15 is deducted from the account. The amount used after using the club after x times would be 15x.

We are also told that Giselle pays $220 in advance on her account at the athletic club.

The money left in account after x uses of athletic club would be money in account initially minus amount used for using the club x times.

y=220-15x

Therefore, our required equation would be y=220-15x.

5 0
3 years ago
A sphere with radius 16 m is cut by a plane that is 9 m below its center. what is the best approximation of the area of the circ
alexdok [17]
The complete question in the attached figure

we know that
the equation of a sphere is
(x-h)²+(y-k)²+(z-l)²=r²

<span>let's assume that the center of the sphere is at the origin
</span>so
(h,k,l)-------> (0,0,0)
for r=16 m
(x-h)²+(y-k)²+(z-l)²=r²-------->  (x)²+(y)²+(z)²=16²

for z=9 m
(x)²+(y)²+(9)²=16²--------> (x)²+(y)²=256-81--------> (x)²+(y)²=175
the radius of the circle is r=√175 m
so the area of the circle A=pi*r²-----> A=pi*175-----> A=549.5 m²

the answer is 
the area of the circle is 549.5 m²

6 0
3 years ago
What is the solution to the system of equations? One-fourth x minus one-half y = 8 One-half x + three-fourths y = negative 5 (–8
kiruha [24]

Answer:

Step-by-step explanation:

x/4-y/2=8, x-2y=32, x=32+2y

x/2+3y/4=-5, 2x+3y=-20, x=(-20-3y)/2

32+2y=(-20-3y)/2

64+4y=-20-3y

7y=-84

y=-12, since x=32+2y

x=32+2(-12), x=32-24=8

So the solution is the point (8, -12)

3 0
3 years ago
Read 2 more answers
SOLVING EQUATIONS
Andrei [34K]

Answer:

4x + 19 = -21

Step-by-step explanation:

4(-10) + 19 = -21

-40 + 19 = -21

3 0
3 years ago
How many times does 8go into14
eimsori [14]

Answer: 1

Step-by-step explanation: it only goes into 14 once because 8 • 2 =16

4 0
3 years ago
Read 2 more answers
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