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Fudgin [204]
3 years ago
15

Sari has a bag containing 6 half dollars. What is the mass of half dollars in Sari's bag when half dollars weighs 11.34 grams?

Mathematics
1 answer:
Fittoniya [83]3 years ago
7 0
Mass of one half dollars = 11.34g
therefore mass of six half dollars = 6*11.34g
                                                       =68.04g
 Ans : mass of 6 half dollars = 68.04g
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Becca and Kimberly are running at a constant speed in a marathon. Becca runs at 4.5 miles per hour. Kimberly’s progress is shown
Georgia [21]

Answer:

Part A: Kimberly

Part B:

Becca = 22.5 miles, Kimberly = 25 miles

Step-by-step explanation:

Part A:

Given that Becca runs at a constant speed of 4.5 miles per hour, use the table to find the constant speed that Kimberly runs, and compare who runs faster.

Let x = time

y = distance

k = speed = y/x

Equation for each person can be written as: y = kx

Therefore:

✔️Equation for Becca if k = 4.5

y = 4.5x

✔️Find k (speed) of Kimberly using (2, 10):

Speed (k) = y/x

k = 10/2

k = 5 miles per hour

Equation for Kimberly would be:

y = 5x

Comparing their speed, Kimberly runs faster because she covers more miles per hour than Becca does.

Part B:

For Becca, substitute x = 5 into Becca's equation, y = 4.5x

Thus:

y = 4.5*5 = 22.5 miles

For Kimberly, substitute x = 5 into Kimberly's equation, y = 5x

Thus:

y = 5*5 = 25 miles

5 0
3 years ago
Why is it helpful to write numbers in different ways
Goshia [24]
You should write numbers in as many ways as you possibly can to make new connections in your brain. Knowing how to write numbers in many different ways can help you solve complex problems more easily. Doing this can also reinforce the mathematical principles and logic you have memorised.

Writing one in many different ways:

1=1/1=2/2=3/3=4/4=(-1)/(-1)=(-2)/(-2)

=1.0=1.00=1.000=(1/2)+(1/2)=(1/3)+(1/3)+(1/3)

=(1/4)+(1/4)+(1/4)+(1/4)

Writing a half in many different ways:

1/2=(1/4)+(1/4)=(1/6)+(1/6)+(1/6)

=(1/8)+(1/8)+(1/8)+(1/8)=4*(1/8)

=2/4=3/6=4/8=5/10=0.5=0.50

etc...etc...
6 0
3 years ago
Which country is a democracy that legally requires its citizens to vote?
Studentka2010 [4]

Answer:

Costa Rica

Step-by-step explanation:

3 0
3 years ago
Please answer correctly !!!! Will mark brainliest !!!!!!!!!
Burka [1]

Answer:

Area = l x w

Area = (x + 1)(x + 7)

Area = x² + 7x + x + 7

Area = x² + 8x + 7

Step-by-step explanation:

8 0
3 years ago
What’s the value of 27.43? Write answer in a fraction
Nezavi [6.7K]

Answer:

As an improper fraction: 27 \frac{43}{100}

As a mixed fraction: \frac{2743}{100}

Step-by-step explanation:

Any number could be expressed as a fraction 27 is \frac{27}{1} and since 0.43 is forty-three hundredths we can express it as \frac{43}{100}.

To find the answer as a mixed fraction we have to put the whole number in the beginning and the fraction in the end. 27 \frac{43}{100}

As an improper fraction we have to add 27 / 1 + 43/100 = \frac{2743}{100}

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3 years ago
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