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miv72 [106K]
2 years ago
10

The classroom has 12 9/10 meters of tape in one area of the building, and 8 3/5 meters of tape in another part. How much tape do

es the classroom have in all
Mathematics
2 answers:
vitfil [10]2 years ago
8 0

Answer: 21 1/2

Step-by-step explanation:

12 9/10 + 8 3/5 = 21 1/2

hope this helps!

bogdanovich [222]2 years ago
7 0

Answer: 32

Step-by-step explanation: 45wheeej5t

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Suppose the equation for line A is given by 12x=9y+27. If line A and B are perpendicular and the point (16,-12) lies on line B,
s2008m [1.1K]

Answer:

y=-\frac{3}{4} x-8

Step-by-step explanation:

he equation for line A is given by 12x=9y+27

Equation of line is y=mx+b where m is the slope

12x=9y+27

Subtract 27 on both sides

12x-27=9y

Divide both sides by 9

y=\frac{4}{3} x-3

Slope of the given line is 4/3

Slope of perpendicular lines are negative reciprocal of one another

slope of perpendicular line is -3/4

m=-3/4, (16,-12)

y-y1=m(x-x1)

y+12=\frac{-3}{4}(x-16)

Multiply fraction inside the parenthesis

y+12=-\frac{3}{4} x+4

Now subtract 12 from both sides

y=-\frac{3}{4} x-8

8 0
2 years ago
Read 2 more answers
Peter has one of each of the following coins in his pocket: a penny, a nickel, a dime, a quarter, and a half-dollar. Four of the
DochEvi [55]

Answer:

10

Step-by-step explanation:

This is a combinations problem, involving factorials.

5!/3!*2!=5*4/2=20/2=10

3 0
2 years ago
Choose the number pair that has digits of 4 that differ in place by a factor of 1000. 4 A. 49,823 and 81,540 B. 83,419 and 46,85
Ne4ueva [31]

Answer:

The correct option is D) 47,063 and 54,722.

Step-by-step explanation:

Consider the provided information.

Here we need to find the number pair that has digits of 4 that differ in place by a factor of 1000.

Now consider the option A) 49,823 and 81,540

The place value of 4 in 49,823 and 81,540 is 40,000 and 40 respectively.

So the difference=40,000-40=39960 which is not a multiple of 1000.

Consider the option B) 83,419 and 46,859

The place value of 4 in 83,419 and 46,859 is 400 and 40,000 respectively.

So the difference=40,000-400=39600 which is not a multiple of 1000.

Consider the option C) 54,890 and 81,745

The place value of 4 in 54,890 and 81,745 is 4000 and 40 respectively.

So the difference=4000-40=3960 which is not a multiple of 1000.

Consider the option D) 47,063 and 54,722

The place value of 4 in 47,063 and 54,722 is 40,000 and 4000 respectively.

So the difference=40000-4000=36000 which is a multiple of 1000.

Hence, the correct option is D) 47,063 and 54,722.

3 0
2 years ago
Monica’s school band held a car wash to raise money for a trip to a parade in New York City. After washing 125 cars, they made $
Sliva [168]

Answer:

The answer is

Step-by-step explanation:

50 premium car washes

75 quick car washes

3 0
2 years ago
Read 2 more answers
Lauren is shopping and finds 6 bracelets, 2 pairs of earrings, and 3 necklaces that she likes. How many ways can Lauren select 4
Grace [21]
Because it does not specify that she has to choose one or two from each category all pieces of jewelry can be treated as choices in a combination set.

the formula for a combination is

C(n,r)= \frac{n!}{r!(n-r)!}

where n is a total number of choices ( 11 ) 
and r is number chosen out of those choices (4)
 so

C(11,4)= \frac{11!}{4!(11-4)!} 

She has 330 possible choices  to come home with 4 pieces of jewelry



5 0
2 years ago
Read 2 more answers
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