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Romashka-Z-Leto [24]
3 years ago
12

The following picture shows two gears meshed together with the arrows lined up. Gear A has 48 teeth, while gear B has 28 teeth.

Suppose the gears begin turning. How many complete revolutions would gear B need to make before the arrows are lined up again?
Mathematics
1 answer:
spin [16.1K]3 years ago
3 0

Answer:  12

<u>Step-by-step explanation:</u>

The LCM of 48 and 28 is 336

It would take 336 ÷ 28 = 12 revolutions of gear B

and 336 ÷ 48 = 7 revolutions of gear A

to match up the arrows.

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3 years ago
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Geoff has d donuts. The amount of bagels he has is 3 less than 4 times the amount of donuts.
bazaltina [42]
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4 0
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If Fun Reads Bookstore has a ready club with a $40 fee and charges $5 per book and Cool Covers Bookstores club charges $100 fee
choli [55]

Answer:

You have to buy more than 20 books to make Cool Cover Bookstore club a better deal.

Step-by-step explanation:

Given that:

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Let x be the number of books.

A(x) = 5x+40

Fee charged by Cool Covers Bookstore = $100

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-3x > -60

Dividing both sides by -3

\frac{-3x}{-3}>\frac{-60}{-3}\\x>20

Hence,

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8 0
3 years ago
F(x)=2x+3, and g(x)=4x-2. what is f(x)+g(x)
klio [65]

Answer:

f

(

x

)

=

5

x

2

−

2

x

+

3

g

(

x

)

=

4

x

2

+

7

x

−

5

f

(

g

(

x

)

)

=

5

(

4

x

2

+

7

x

−

5

)

2

−

2

(

4

x

2

+

7

x

−

5

)

+

3

=

80

x

4

+

280

x

3

+

45

x

2

−

350

x

+

125

−

8

x

2

−

14

x

+

10

+

3

=

80

x

4

+

280

x

3

+

45

x

2

−

8

x

2

−

350

x

−

14

x

+

125

+

10

+

3

f

(

g

(

x

)

)

=

80

x

4

+

280

x

3

+

37

x

2

−

364

x

+

138

The answer is  

f

(

g

(

x

)

)

=

80

x

4

+

280

x

3

+

37

x

2

−

364

x

+

138

.

Step-by-step explanation:

8 0
3 years ago
Given that f(x) = x + 4x evaluate f(-2).
Makovka662 [10]
The answer is -10 because when u plug in -2 for x u get 4(-2)=-8 then -2+-8=-10
4 0
3 years ago
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