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4 years ago

Describe how you regroup when you find the sum of 64+43

1 answer:

5 0

Here, regrouping is basically carrying.

64+43 shown vertically would be:

64
+43
-------
107
4+3 is 7, so seven is in the ones place, but that's not the point.
60+40 is 100, so you regroup by carrying the one to the hundreds place.

Hope I helped!

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A plane traveled 1463 miles to Moscow and back. The trip there was with the wind. It took 11 hours. The trip back was into the w

Studentka2010 [4]

The speed of plane is 105 miles per hour and speed of wind is 28 miles per hour.

Step-by-step explanation:

Given,

The distance traveled by plane = 1463 miles

The trip with the wind took 11 hours.

The trip took 19 hours against the wind.

Let,

s be the speed of plane and w be the speed of wind.

Therefore;

Speed with the wind = s+w

Speed into the wind = s-w

We know that;

Distance = Speed * Time

Therefore;

Equation for trip taken with wind.

1463 = 11(s+w)

Dividing both sides by 11

$\frac{1463}{11}=\frac{11(s+w)}{11}\\133=s+w\\s+w=133\ \ \ Eqn\ 1$

Equation for trip taken into the wind

1463 = 19(s-w)

Dividing both sides by 19

$\frac{1463}{19}=\frac{19(s-w)}{19}\\77=s-w\\s-w=77 \ \ \ Eqn\ 2$

Adding Eqn 1 and 2

$(s+w)+(s-w)=133+77\\s+w+s-w=210\\2s=210$

Dividing both sides by 2

$\frac{2s}{2}=\frac{210}{2}\\s=105$

Putting s=105 in Eqn 1

$105+w=133\\w=133-105\\w=28$

The speed of plane is 105 miles per hour and speed of wind is 28 miles per hour.

3 0

3 years ago

What number multiplied by 7/10 has a product of 1

Kobotan [32]

Answer:7/10 x 10/7 = 70/70 = 1

Step-by-step explanation:

5 0

3 years ago

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Expand(x+y2)2 plzzzzzzzzzzzzzzzz

Ludmilka [50]

Step-by-step explanation:

(x+y²)²=x²+2xy²+y⁴

HOPE IT HELPS YOU

..........................

7 0

3 years ago

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Edward Taylor purchased two shirts for $17.95 and $27.50, a jacket for $94.20, and two ties for $12.30 each. The state tax is 5

Keith_Richards [23]

Total cost

17.95 + 27.50 + 94.20 + 12.30 + 12.30 = 164.25

tax

164.25 * 5% = 8.21

164.25 * 1.5% = 2.47

164.25 * 2% = 3.28

sum of the tax

8.21 + 2.47 +3.28 =

13.96

your answer is C

6 0

3 years ago

What's the possibility of choosing a spade in a deck of 52 cards?

Mashcka [7]

There are 4 suits in a deck of cards: hearts, diamonds, spades, and clubs.
Therefore there are 13 cards of each suit (52/4).
The possibility of choosing a spade in a deck of 52 cards is 13/52 = 25%

6 0

3 years ago

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