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Zina [86]
3 years ago
6

Factor each expression 45c+ 10d

Mathematics
1 answer:
GarryVolchara [31]3 years ago
6 0
Since you can factor 5 out of both 45c and 10d, the expression will be 5(9c+2d)
5(9c+2d)
=)=)=)
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Solve the following system by the substitution method <br> 0.1x + 0.8y = - 5.1 , 0.4x- 0.9y = 8.3
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3 years ago
The School principal determined that 1/4 of the original student school desks would need to be replaced this year 50 teachers wo
luda_lava [24]

Answer:

The number of original students desks were there in school before purchase was made is 980 .

Step-by-step explanation:

Given as :

The total number of new desks purchased including teacher and students = 295

The number of new desks purchased for students = \frac{1}{4} of original students desks available

The number of new desks purchased for teachers = 50

Let The number of original students desks available before purchase = S

Now, According to question

∵ The total number of new desks purchased including teacher and students = 295

I.e The number of new desks purchased for students + The number of new desks purchased for teachers = 295

Or,  \frac{1}{4} of S + 50 = 295

Or,  \frac{1}{4} × S = 295 - 50

Or , \frac{1}{4} × S = 245

∴  S = 245 × 4 = 980

So, original desks available for students = S = 980

Hence The number of original students desks were there in school before purchase was made is 980 . Answer

4 0
3 years ago
Dan spend half of his allowance going to the movies.He washed the family car and earned eight dollars.What is his weekly allowan
Karolina [17]

Answer:

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Step-by-step explanation:

if "x" is his weekly allowance:

x-0.5x+8=12

Dan make x dollars, then he spend 0.5x dollars and he earned 8 dollars, and that is 12 dollars.

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Answer:

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Step-by-step explanation:

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3 years ago
What is 19 hundred thousandths in scientific notation
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.0019, so it would be 1.9 x 10^-4 in scientific notation. Because you move the decimal 4 places.
6 0
3 years ago
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