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tester [92]
3 years ago
13

How can i use decimal models to add decimals?

Mathematics
2 answers:
Shkiper50 [21]3 years ago
8 0
Are you sure that the question plz send a picture
Vinil7 [7]3 years ago
3 0
<span>Understand that a decimal is any number written in the base-10 system....

Represent decimals using area models.

State the fraction (tenths or hundredths) that is equivalent to a given decimal.
<span>
Compare the values of decimals (tenths or hundredths) using area models and/or a number line.</span></span>
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Simplify the expression<br><br> -4 + 3 + 5 =
xenn [34]

Answer:

4

Step-by-step explanation:

-4+3=-1

-1+5=4

8 0
2 years ago
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 do you add a zero when multiplying two digits by two digits
malfutka [58]
When you add a zero to the problem, it shows you are now multiplying in the double-digits. Let's say you are multiplying 12x12. First you cover up the one then multiply them. Then cover up the two and you have 10. When you multiply them, it ends in a zero. Don't think of it as adding a zero but adding to products.
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3 years ago
The test ends at 1:25. It began 30 minutes earlier. What time did the test begin?
MAXImum [283]
The time is 12:55 AM /PM
8 0
3 years ago
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vlabodo [156]

Answer:

Sorry I don´t know the answer but I tried

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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