Need help math please

How many 4 1/2 meters of ribbon are there in a 140 meter spool?

andrezito [222]

Answer:

in a 140 meter spool there are 31 1/9 times 4 1/2 meters of ribbon

Step-by-step explanation:

To find out how many 4 1/2 meters of ribbon are there in a 140 meter spool, divide 140 meter by 4 1/2 meter, but first convert mixed number to an improper fraction

$4\frac{1}{2}=\frac{4*2+1}{2}=\frac{9}{2}$

$\frac{140}{(9/2)}=\frac{280}{9}$

Convert to mixed number

$\frac{280}{9}=\frac{279}{9}+\frac{1}{9}=31\frac{1}{9}\ times$

therefore

in a 140 meter spool there are 31 1/9 times 4 1/2 meters of ribbon

3 0

3 years ago

I need these answers I have no idea how to even do this please help

pav-90 [236]

Answer:

y=5x+5

Step-by-step explanation:

What you're doing is creating an equation for #1 in slope-intercept form (y=mx+b)

Where m is the slope and b is your y-intercept!

If you already have 5 gallons in the tank and your adding 5 more gallons every minute, let x be your minutes:

$y=5x+5$

For #2 you're going to graph this, but you need to know your slope and y-intercept! In this case your slope is 5 and your y-intercept is 5. your graph would look like the picture attached.

For #3, yes! It does make sense to draw a line because the amount of water is increasing in the tank by 5 gallons every minute, meaning it will increase until she stops it.

For #4 If there had been no water in the tank already then the whole equation would change to just being $y=5x$ , because there would be no starting amount. This also means that the graph would look different and it would start at 0 rather than at 5.

3 0

3 years ago

Maureen went on a 3 day 50 mile trip. the first day she biked 17 7/8 miles . the second day she biked 18 5/7 miles. How many mil

Inessa [10]

To find the miles for 3rd day, we take away the miles she biked for the first two day from the total.

$50 - 17 \dfrac{7}{8} - 18\dfrac{5}{7}$

$=50 - 17 \dfrac{7 \times 7}{8 \times 7} - 18\dfrac{5 \times 8}{7 \times 8}$

$= 48 \dfrac{112}{56} - 17 \dfrac{49}{56} - 18\dfrac{40}{56}$

$= 13 \dfrac{23}{56} \text { miles }$

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Answer: She traveled 13 23/56 miles on the third day.
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7 0

4 years ago

A survey was conducted with s students. 30% of those surveyed said that they have traveled out of the country.Of the students wh

olchik [2.2K]

I'm pretty sure the expression would be (if students = s) S - (0.3S + 40)

8 0

3 years ago

You are given the steps for constructing the bisector of an angle using a compass and a straightedge. Arrange the steps in the c

postnew [5]

Mark as brainiest

1) place the compass needle on the external point r.2) make the compass width greater than the distance from r to the given line.
3) draw an arc cutting the given line at two points.
4) mark and label the points of intersection p and q.
5) without changing the compass width, move the compass needle to q and draw another arc below the line crossing the previous arc.
6) move the compass needle to p and make an arc below the line.
7) mark and label the point of intersection s.
8) draw a line from the external point r to the point where the arcs intersect, s.
9) line rs is perpendicular to line pq and passes through the external point r.

6 0

3 years ago