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loris [4]
4 years ago
9

Write or draw to explain two different ways to find the difference for 12-3

Mathematics
1 answer:
nikitadnepr [17]4 years ago
5 0
You can do the normal 12 - 3 = 9

Or 12 + (-3) = 9
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A florist needs several pieces of ribbon that are 5 and 1/2 inches long if she begins with a piece of ribbon that is 264 inches
dimaraw [331]

Answer:

  48

Step-by-step explanation:

(264 in)/(5.5 in/piece) = (264/5.5) pieces = 48 pieces

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Division is the usual shortcut for repeated subtraction. You could subtract 5.5 from 264 until you get to zero. You would have to do 48 subtractions. It is easier to divide 264 by 5.5 to see how many times it goes.

8 0
3 years ago
PLEASE HELP ILL MARK THE FIRST RIGHT ANSWER AS BRAINIEST
Bas_tet [7]

Answer:

26 rows

Step-by-step explanation:

126/5=25.2

there no such thing as a .2 of a row so you have to add one more

25+1=26 rows

7 0
4 years ago
Read 2 more answers
Determine which equation is parallel to the line JK and which is perpendicular to like JK
sattari [20]

Answer:

If the equation of JK is y = mx + c, then y = mx + c' is the equation of the straight line parallel to above and y = - \frac{1}{m}x + b will be perpendicular to that.

Step-by-step explanation:

Let us assume that the line JK has the equation in slope-intercept form as  

y = mx + c ............. (1)

Therefore, the equation has slope = m

Now, any straight line having an equation with slope m will be parallel to line JK.

So, the equation of the straight line which is parallel to equation (1) will be  

y = mx + c', where, c' is any real constant.

Now, let us assume that another straight line having equation  

y = nx + a is perpendicular to the line JK i.e. equation (1).

Now, we know if two lines are perpendicular to each other then the product of their slopes will be - 1.

So, mn = - 1

⇒ n = - \frac{1}{m}

Therefore, the equation of a straight line which is perpendicular to equation (1) will be y = - \frac{1}{m}x + b where b is any real constant. (Answer)

3 0
4 years ago
Read 2 more answers
28/a + 6 = <br> Plss I need help
dedylja [7]

Answer:

\frac{28 + 6a}{a}

Step-by-step explanation:

6 0
3 years ago
A jar contains 99% fair coins, and 1% double-headed coins. you took a coin at random, then toss it 3 times and observed 3 heads.
slamgirl [31]
1 in 100, because you have 99% fair coins and just 1% double-headed one, then 99 + 1 is obviously 100, so you have a 1 in 100 chance
6 0
3 years ago
Read 2 more answers
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