1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alex
3 years ago
6

Match each percent amount to its correct value. Tiles 15% of 30 30% of 45 60% of 7 23% of 20 Pairs 13.5 arrowBoth 4.5 arrowBoth

4.6 arrowBoth 4.2 arrowBoth
Mathematics
2 answers:
Tema [17]3 years ago
5 0

Answer:

Match each percent amount to its correct value.

1. 15% of 30

\frac{15}{100}\times30= 4.5

2. 30% of 45

\frac{30}{100}\times45= 13.5

3. 60% of 7

\frac{60}{100}\times7= 4.2

4. 23% of 20

\frac{23}{100}\times20= 4.6

These are the correct matches to the given questions.

Over [174]3 years ago
3 0
15% of 30....turn ur percent to a decimal...." of " means multiply
0.15(30) = 4.5

30% of 45.....set it up the same way as before
0.30(45) = 13.5

60% of 7
0.60(7) = 4.2

23% of 20
0.23(20) = 4.6
You might be interested in
Which is a logical conclusion based on the information given in the figures
Dmitry_Shevchenko [17]
Selection C is the appropriate choice.
3 0
3 years ago
An air traffic controller spots two airplanes at the same altitude converging to a point as they fly at right angles to each oth
sattari [20]
They are traveling at right angles to each other so we can say one is traveling north to south and the other west to east.  Then we can say that there positions, y and x are:

y=150-600t  x=200-800t

By using the Pythagorean Theorem we can find the distance between these two planes as a function of time:

d^2=y^2+x^2, using y and x from above

d^2=(150-600t)^2+(200-800t)^2

d^2=22500-180000t+360000t^2+40000-320000t+640000t^2

d^2=1000000t^2-500000t+62500

d=√(1000000t^2-500000t+6250)

So the rate of change is the derivative of d

dd/dt=(1/2)(2000000t-500000)/√(1000000t^2-500000t+6250)

dd/dt=(1000000t-250000)/√(1000000t^2-500000t+6250)

So the rate depends upon t and is not a constant, so for the instantaneous rate you would plug in a specific value of t...

...

To find how much time the controller has to change the airplanes flight path, we only need to solve for when d=0, or even d^2=0...

1000000t^2-500000t+62500=0

6250(16t^2-8t+1)=0

6250(16^2-4t-4t+1)=0

6250(4t(4t-1)-1(4t-1))=0

6250(4t-1)(4t-1)=0

6250(4t-1)^2=0

4t-1=0

4t=1

t=1/4 hr

Well technically, the controller has t<1/4 because at t=1/4 impact will occur :)


7 0
2 years ago
Aubreys dinner cost $85 she tips the waitstaff 30% for excellent service
Pavel [41]

Answer:

25.5

Step-by-step explanation:

4 0
2 years ago
If any human being adores math pls help me with this!!!
Scilla [17]
First box is 100 second is 4 third is 1500 4th box is 60 and last box is 1560
4 0
2 years ago
Four people equally share 3 4 ​ of a whole pizza. What fractional part of the whole pizza does each person receive?
murzikaleks [220]

Answer:

3/16

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • 35 POINTS PLS HELP WITH MATH (I post this like 3 times so you can get extra points by answering it again ;-;)
    8·1 answer
  • How many feet are in 84 inches??
    13·1 answer
  • Which expressions are equivalent to 6^16 ? Check all that apply
    13·2 answers
  • 4) Determine the value of r so that a line through<br> the points (r, 2) and (4, -6) has a slope =
    11·1 answer
  • In making the key chain, Sara uses a pattern of beads 3 times. After the key chain is complete, what fraction of the beads in th
    10·1 answer
  • Elapsed time 4:10 to 5:15
    14·2 answers
  • *GEOMETRY*
    13·1 answer
  • Is this triangle acute, right, or obtuse?
    9·1 answer
  • Factor completely 2x2 + 4x − 2
    12·1 answer
  • PLS HELP ASAP! 30 POINTS! functionf(x) is graphed on the coordinate plane.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!