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3 years ago

Uma professora reservou 6 folhas de papel colorido para cada um de seus 28

Mathematics

1 answer:

Lapatulllka [165]3 years ago

4 0

Answer:

4 students were missing

Step-by-step explanation:

A teacher reserved 6 sheets of colored paper for each of her 28

students do a job. As some students were missing, the teacher gave 7

sheets for each student present. How many students were missing?

6*28=168

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3x^3-2x^2-147x+98=(ax-c)(bx+d)(bx-d) where a,b,c and d positive integers. Work out the value of a,b,c and d

Alexxx [7]

Expand the right side:

$(ax-c)(bx+d)(bx-d)=(ax-c)(b^2x^2-d^2)$

$=ab^2x^3-b^2cx^2-ad^2x+cd^2$

Notice that 98 = 2 * 7 * 7, so we have $c=2$ and $d=7$ .

Then

$-ad^2=-147\implies a=\dfrac{147}{49}=3$

and

$ab^2=3\implies b^2=1\implies b=1$

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3 years ago

Which of the following lists is in the correct order from smallest to largest? -13, -19, -21, -24 11, -12, 15, -19 -7, -3, 6, 2

seraphim [82]

Answer:

-24, -21, -19, -19, -19, -14, -13, -12, -7, -3, 2, 5, 6, 11, 11, 15

Step-by-step explanation:

Hey there!

To put the numbers in least to greatest form, you need to put the biggest numbers with a - sign in front of it

This means negative

Negative means below zero

Then after putting the big negative numbers, you put positive numbers going from smallest to largest

So the numbers in least to greatest is -24, -21, -19, -19, -19, -14, -13, -12, -7, -3, 2, 5, 6, 11, 11, 15

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2 years ago

All square numbers ends with ---------------------------- at units place . please find answer

nexus9112 [7]

Hello

All square numbers ends with 0,1,4,5,6 or 9 at units place.

4 0

3 years ago

Solve the following inequality. -21> -7c

BigorU [14]

Divide both sides by -7, and flip the sign: 3 > c

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3 years ago

Read 2 more answers

A washer and a dryer cost $713 combined. The washer costs $37 less than the dryer. What is the cost of the dryer

77julia77 [94]

Answer:

375

Step-by-step explanation:

713 - 37 = 676

676 divided by 2 = 338

That would be the washer but we need to add the 37 again for the dryer

338 + 37 = 375

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3 years ago