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vekshin1
4 years ago
12

Which of these items is the better buy? A. An 8-pack of glue sticks for $3.99 or 1 glue stick for $0.54? B. A 12-pack of tape fo

r $2.50 or 1 roll of tape for $0.19 c. A 100-pack of pencils for $4.88 or 1 pencil for $0.05 d. A 50-pack of paper clips for $0.89 or a 25-pack of paper clips for $0.45
Mathematics
2 answers:
just olya [345]4 years ago
8 0

Answer: A is the 8-pack, B is the single roll, C is the 100 pack, D is the 50 pack.

Step-by-step explanation:

For each of these, multiply the smaller number by a number that has a product of the bigger number, example D. multiply 25 by 2 to get 50, then compare the totals.

shutvik [7]4 years ago
4 0

Answer:

the first one is an 8 pack of glue sticks

the second one is 1 tape roll for .19

the third one is 100 pack of pencils for 4.88

the fourth one is a 25 pack of paper clips

Step-by-step explanation:

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A pendulum is 18 feet long. It's central angle is 44°. The pendulum makes one back and forth swing every 12 seconds. To the near
Gekata [30.6K]

Answer: it swings 138 feet in 1 minute

Step-by-step explanation:

The back and forth movement of the pendulum represents the length of the arc of the circle.

The formula for determining the length of an arc is expressed as

Length of arc = θ/360 × 2πr

Where

θ represents the central angle.

r represents the radius of the circle.

π is a constant whose value is 3.14

From the information given,

Radius, r = length of pendulum = 18 feet

θ = 44°

Length of arc = distance moved by the pendulum in one direction.

Therefore,

Length of arc = 44/360 × 2 × 3.14 × 18

Length of arc = 13.816 feet

The pendulum makes one back and forth swing every 12 seconds. It means that the distance it covers in one back and forth movement is

13.816 × 2 = 27.632 feet

If the pendulum swings 27.632 feet in 12 seconds, then

In 60 seconds(1 minute), the distance covered would be

(60 × 27.632)/12 = 138 feet

7 0
3 years ago
How to solve 14d-2d=-84
irinina [24]
First combine like terms:
14d+-2d=12d

Then do -84 divided by 12 = -7
D= -7


3 0
4 years ago
Read 2 more answers
(a) Work out the reciprocal of 1.25
Oxana [17]

Answer:

0.8 OR \frac{4}{5}

Step-by-step explanation:

The reciprocal of any number is the number that it multiplies by to equal 1.

The reciprocal can be found by simply converting the number into a fraction and then 'flipping' the fraction as any number multiplied by its reciprocal is 1.

E.g.

No. X/Y * Y/X (its reciprocal) = 1

\frac{x}{y} *\frac{y}{x} =\frac{xy}{xy} =1

So, to find the reciprocal of 1.25,we should first convert 1.25 to a fraction.

1.25 = 125/100

\frac{125/25}{100/25}=\frac{5}{4}

Now we just flip 5/4 to get our reciprocal:

\frac{4}{5} = 0.8

Test: 0.8 * 1.25 = 1

The reciprocal of 1.25 (\frac{5}{4}) is 0.8 (\frac{4}{5}).

Hope this helped!

8 0
3 years ago
What is the HCF of 66, 121 ,132
gayaneshka [121]
11

66=11×6
121=11×11
132=11×12
5 0
3 years ago
Read 2 more answers
Keenan currently does a total of 888 pushups each day. He plans to increase the number of pushups he does each day by 222 pushup
FromTheMoon [43]

888+222x=303030       *and to solve*

-888            =888               subtract 888 to isolate x

222x=302142                          

222/222x= 302142              divide by 222

x=1361.

It will take Keenan 1,361 days to get to his goals of 303,030 push ups.

hope it helps!

4 0
3 years ago
Read 2 more answers
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