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STALIN [3.7K]
3 years ago
10

Maje a ten or hundred to add mentally

Mathematics
1 answer:
NeTakaya3 years ago
6 0
You can add numbers mentally if there are zero's behind them.
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3x3 1/7 which two whole number
pishuonlain [190]

Could you explain a bit more please

7 0
3 years ago
Read 2 more answers
Product in standard form (explain)<br> (3+6i)(4+9i)
ololo11 [35]
First you have to factor (aka, multiply) your binomial (which is what you have written) usually it helps to organize your thinking, and help tell what you need to multiply, to use the binomial chicken(or crab claw, what ever you want to call it) which basically you draw two arches, one arch connecting the 3 and 4, and then the other the 3 and 9i. on the opposite side (depending on wheater you connected then from the top or bottom) you connect (with an arch) the 6i and the four, and then the 6i to the 9i.

so now you multiply each piece you've connected:
3 x 4= 12
3 x 9i= 27i 
6i x 4= 24i
6i x 9i= 54i^2 

after  you've done this you can move on to  putting it into standard form, which just means you put things in descending order, depending on how many exponents the x (or in this case i) has.
your largest exponent is 54i^2, so that's first in out equation, next 27i, and 24i (you can combine these because they are like term) which equals 51i, after that you just add the 12 on the end, so the final equation looks like this:

54i^2+51i+12


4 0
3 years ago
Evaluate -d - euf-g if d = 5, e = -6, f = 7 and g = -9<br> -27<br> 27<br> - 17<br><br> 17
Sladkaya [172]

Answer:

You put the numbers twice, so I can't comprehend it.

Step-by-step explanation:

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Two runners in a 400 meter race cross the finish line in a photo finish. From the photo, officials find that the second runner w
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The second place runner had already completed 320 meters when the winner crossed the finish line

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What is the solution to the following equation?
Liono4ka [1.6K]

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B. X= 14

C. X=10

D. x=5

Step-by-step explanation:

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3 years ago
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