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4 years ago

Why you should record a 1 in the tens column when you regroup in an addition problem

2 answers:

7 0

EX: 29
+24
= 53

If u add the right side and it's over 9 then you have to put a 1 or whatever the first number is bc you can't put the full number which means you have to take the first number which is a 1 in my ex and put it in the left column. You should do this because u can't put the full.two digits down you have to regroup the 1.

Salsk061 [2.6K]4 years ago

6 0

Because any number times itself is the number

You might be interested in

The graph of a trigonometric function oscillates between y=1 and y=-7. It reaches its

madam [21]

Answer:

y = 4 sin(½ x) − 3

Step-by-step explanation:

The function is either sine or cosine:

y = A sin(2π/T x) + C

y = A cos(2π/T x) + C

where A is the amplitude, T is the period, and C is the midline.

The midline is the average of the min and max:

C = (1 + -7) / 2

C = -3

The amplitude is half the difference between the min and max:

A = (1 − -7) / 2

A = 4

The maximum is at x = π, and the minimum is at x = 3π. The difference, 2π, is half the period. So T = 4π.

Plugging in, the options are:

y = 4 sin(½ x) − 3

y = 4 cos(½ x) − 3

Since the maximum is at x = π, this must be a sine wave.

y = 4 sin(½ x) − 3

4 0

3 years ago

Alexandria used 1/2 of grapes and 2/3 of strawberries combined to make a fruit snack. how many cups of grapes and strawberries d

Ivenika [448]

Considering that there are 1/2 cup of grapes and 2/3 of strawberries, we can add them together to get 1 and 1/6 cups. This is done by adding 3/6 + 4/6. I'm not sure if this is correct, since it's kind of easy for a high school problem... I hope this helps anyway :D

8 0

3 years ago

Find an equation for the line that passes through the points(-4,-3)and(6,1).

jeyben [28]

Answer:

$2x - 5y = 7\:\:or\:\:y = \frac{2}{5}x - 1\frac{2}{5}$

Step-by-step explanation:

First, find the rate of change [slope]:

$\frac{-y_1 + y_2}{-x_1 + x_2} = m$

$\frac{3 + 1}{4 + 6} = \frac{4}{10} = \frac{2}{5}$

Then plug these coordinates into the Slope-Intercept Formula instead of the Point-Slope Formula because you get it done much swiftly. It does not matter which ordered pair you choose:

1 = ⅖[6] + b

2⅖

−1⅖ = b

y = ⅖x - 1⅖ >> Line in Slope-Intercept Form

If you need it written in Standard Form:

y = ⅖x - 1⅖

-⅖x -⅖x

_________

−⅖x + y = −1⅖ [We do not want fractions in our standard equation, so multiply by the denominator to get rid of it.]

−5[−⅖x + y = −1⅖]

2x - 5y = 7 >> Line in Standard Form

_______________________________________________

−3 = ⅖[−4] + b

−1⅗

−1⅖ = b

y = ⅖x - 1⅖ >> Line in Slope-Intercept Form

If you need it written in Standard Form:

y = ⅖x - 1⅖

-⅖x -⅖x

_________

−⅖x + y = −1⅖ [We do not want fractions in our standard equation, so multiply by the denominator to get rid of it.]

−5[−⅖x + y = −1⅖]

2x - 5y = 7 >> Line in Standard Form

** You see? I told you it did not matter which ordered pair you choose because you will ALWAYS get the exact same result.

I am joyous to assist you anytime.

5 0

3 years ago

Rachel saved money to buy art supplies. She used 1/3 of her savings to buy brushes. She used 3/5 of her savings to buy paint. Wh

Artist 52 [7]

This is a problem on addition of dissimilar fractions.
1/3 + 3/5 = ?
To add dissimilar fractions, we have to convert it first to similar fractions. To convert to similar fractions, find the Least Common Multiple (LCM) of the denominators. In this case, LCM is 15. Then rewrite the fractions using the LCM as the denominator.
1/3 = 5/15; 3/5 = 9/15
Now proceed with the addition -
5/15 + 9/15 = 14/15
Then subtract the sum from the savings -
1 - 14/15 = 1/15
Therefore, Rachel still has 1/15 of her savings

3 0

3 years ago

The price of a pair of shoes increases from $55 to $72. What is the percent increase to the nearest percent?

Alex17521 [72]

72 - 55 = 17

(17/55) x 100
= 1700/55
= 30.90909...
= 30.9% (3sf)

5 0

3 years ago

Read 2 more answers