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4 years ago

How do you multiply rational numbers?

2 answers:

7 0

To divide rational numbers, you turn the division problem into a multiplication problem by flipping the second rational number. Then you go ahead and multiply the tops and bottom together to get your answer. If you can simplify your problem before multiplication you can go ahead and do so to make your problem easier.

Serggg [28]4 years ago

5 0

Change all the numbers into either decimals or fractions and multiply

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Cassie needs at least $140 to buy a graphing calculator for math class. Currently she has $30 saved and her neighbor tells her s

UkoKoshka [18]

Answer:

Step-by-step explanation:

140 - 30 =110

110 ÷ 10 = 11

answer is 11 hours

8 0

3 years ago

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5t-1=6t-5 How do you solve this equation

Tanzania [10]

$5t-1=6t-5$

$-1=6t-5-5t

 

$ $Subtract \ 5t \ from \ both \ sides$

$-1=t-5

 
$

$-1+5=t

 
$ $Add \ 5 \ to \ both \ sides$

$\boxed{\boxed{t=4}}$

5 0

3 years ago

I don't understand how it gets the result <img src="https://tex.z-dn.net/?f=28b_%7B2%7D" id="TexFormula1" title="28b_{2}" alt="2

Maksim231197 [3]

Answer + Step-by-step explanation:

<u><em>your question is about equation 4</em></u> :

$b_{1}=14-b_{2}$

Then

$\left( b_{1}\right)^{2} =\left( 14-b_{2}\right)^{2} \ \text{(this is a special product )}$

Then

$\left( b_{1}\right)^{2} =14^{2}-2\times 14 \times b_{2}+ (b_2)^2$

Then

$\left( b_{1}\right)^{2} =196-28 b_{2}+ (b_2)^2$

7 0

2 years ago

PLZ HELP ASAP DENSITY WORD PROBLEMS

yuradex [85]

We know the mass and the volume, using which we can find the density.

Density = Mass/Volume

So,

Density = 16950/1.5 = 11300 kg/m³

So the coins of made of Lead as the density of coins is equal to the density of Lead

So correct answer is option C

5 0

3 years ago

Length of a rectangle is 8cm increased by 150%.calculate the new lenght

sashaice [31]

Answer:

l=8

l'=8×150/100=12cm

increase in l=8+12=20cm

3 0

3 years ago

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