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ladessa [460]
3 years ago
5

Roberto studied 3/5 hour every day for 7 days. How many hours did Roberto study in 7 days?

Mathematics
2 answers:
slavikrds [6]3 years ago
5 0
I believe it would be 4 1/5 hours
olganol [36]3 years ago
4 0
Let me explain how you do this 
if for 1 day he studies 3/5s of an hour. And the question is asking for 7 days then all we have to do is multiply 3/5s times 7! Ill guide you through the math;)
 3                                                               3         7    
----   x   7  we can also write it like this   ---   x   ---   lets use this one:)  
 5                                                               5         1

but now our next step is to multiply across!
 
<span> 3         7   =   3 x 7 = 21 
</span>---   x  ----                       so our new fraction issssss
 5         1   =   5 x 1 = 5 

 21
-----   and since 5 goes into 21 four times and 2 is left over this is how         5     much he studied in 7 days  4.2 hours
or as a fraction...
    1
4 ----
    5
answer? 4.2 hours studied :D
have a good one and 
MARK ME BRAINLIEST!!:D
thxx bye 

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Rotate the following point (- 5, 7) with a 90 degree CCW rotation
Sergio039 [100]

Given:

The point is (-5,7).

To find:

The image of the given point after 90 degrees counter clockwise rotation.

Solution:

If a point rotated 90 degrees counter clockwise, then

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Let the given point is P(-5,7). Using the above rule, we get

P(-5,7)\to P'(-7,-5)

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5 0
2 years ago
19/100+7/10 wich fraction can be used in place of 7/10 to find the value of the expression​
Dimas [21]

Answer:

70/100.

Step-by-step explanation:

When adding fractions, you need to find a common denominator.

This just means that the numbers at the bottom of both fractions you are adding must be the same.

So for 19/100 + 1/10, you need to match the two denominators (bottom numbers).

To do this, you need to multiply 10 by 10 to get 100.

What you do to the bottom, you must always do to the top as well.

So multiply 7 by 10 and get 70.

70/100 will replace 7/10.

Now you can add fractions because the bottom numbers are the same.

4 0
3 years ago
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suter [353]

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= (2.125 / 1.25) x 10^(4 - 3)

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Answer

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Step-by-step explanation:

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