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
77julia77 [94]
3 years ago
11

Can u plz help me?...

Mathematics
1 answer:
Westkost [7]3 years ago
3 0

Answer:

a  4 1/5

b  7 7/24

Step-by-step explanation:

a  7/9 * 5 2/5

Change the mixed number to an improper fraction

7/9 * (5*5+2)/5

7/9 * 27/5

Rewrite

7/5 * 27/9

7/5 * 3

21/5

Change this back to a mixed number

5 goes into 21 4 times  (4*5 = 20 ) with 1 left over

4 1/5


b  1 3/4 * 4 1/6

Change to improper fractions

(4*1+3)/4  * (6*4+1)/6

7/4 * 25/6

175/24

Change back to a mixed number

24 goes into 175 7 times  (7*24 =168 ) with 7 left over

7 7/24

You might be interested in
Write in exponential notation: 301=​
dalvyx [7]

Answer:

3.01 * 10^2

Step-by-step explanation:

=)

Hope this helps!

4 0
2 years ago
last year 80 students signed up for s summer trip to washington, D.C. This summer 50 students have signed up to go. What is the
andrew-mc [135]

Answer:

U can refer this.... but im not sure... hope it's help ya!

3 0
3 years ago
"a u.S. 1-cent coin (a penny) has a diameter of 19 mm and a thickness of 1.5 mm". Assume the coin is made of pure copper, whose
choli [55]

<u>the question is </u> Calculate the value of the copper in the coin

Step 1

Find the volume of the coin

we know that

the volume of a cylinder is equal to

V=\pi r^{2}h

where

r is the radius of the coin

h is the thickness of the coin

in this problem we have

Diameter=19 mm=1.9 cm

r=D/2------> r=1.9/2=0.95 cm

h=1.5 mm=0.15 cm

substitute the values in the formula

V=\pi*0.95^{2}*0.15=0.425\ cm^{3}

Step 2

<u>Find the mass of copper in the coin</u>

we know that

the density is equal to

Density=mass/volume

Solve for the mass

mass=Density*volume

we have

Density=8.9\ gr/cm^{3}\\Volume=0.425\ cm^{3}

substitute in the formula

mass=8.9*0.425=3.785\ gr

Step 3

<u>Find the cost</u>

we know that

the market price of the copper is $2.15 per pound

1 pound=453.592 grams

convert gram to pounds

3.785 gr=3.785/453.592=0.0083 pounds

0.0083*$2.15=$0.018=$0.02

therefore

<u>the answer is</u>

$0.02

3 0
3 years ago
If w=-4, which inequality is true
vlabodo [156]

Step-by-step explanation:

the answer would be the last one

cuz if u do -4(-4) it equals 20

and if u do -5+20 it equals 15

and 15>10

4 0
2 years ago
Read 2 more answers
What’s the average for1/2,1/3 and1/6
Ugo [173]
1/2+1/3+1/6=3/6+2/6+1/6=6/6=1
By putting them all at the same denominator, you can add them all together.
then you have to divide it by 3 for the three.
1/3 is the average.
3 0
3 years ago
Other questions:
  • MN and KL are parallel. If JM = 7, MK = 21, and LN = 24, what is NJ? A. 8 B. 3 C. 10 D. 16
    9·1 answer
  • Solve the differential equation.<br><br> (y^2 + xy^2)y' = 1
    10·1 answer
  • What times what is 216
    12·1 answer
  • 2. which number is between 3 and 4 on a
    12·2 answers
  • 4. Is this slope positive or negative? *
    7·1 answer
  • PLEASE HELP I WILL GIVE BRAINLIEST!
    14·2 answers
  • Jane was paid $316 for 40 hours of work. Use compatible numbers to find about how much
    10·1 answer
  • CAN SOMEONE HELP ME WITH THIS?
    14·1 answer
  • On​ Melissa's 6th​ birthday, she gets a ​$3000 CD that earns 4​% ​interest, compounded . If the CD matures on her 16th ​birthday
    5·1 answer
  • Which of these is a unit of density?<br> km/m<br> kg/m?<br> kg/m<br> kg/m
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!