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
zaharov [31]
3 years ago
14

Please help fast!! Katrina has $3.60 worth of nickels and dimes. She has 46 coins in total. How many nickels and dimes does she

have?

Mathematics
1 answer:
Igoryamba3 years ago
6 0

Answer:

20 nickels and 26 dimes

Step-by-step explanation:

  • She has $3.60 in nickels and dimes
  • a nickel is $0.05 and a dime is $0.10
  • let n be the number of nickels and d be the number of dimes
  • thus the first equation is 3.6 = 0.05n +0.1d
  • If she has 46 coins then n + d = 46
  • then n = 46 - d
  • sub n = 46 - d into 3.6 = 0.05n +0.1d
  • 3.6 = 0.05(46 - d) + 0.1d
  • 3.6 = 2.3 -0.05d+0.1d
  • 1.3 = 0.05d
  • 26 = d
  • sub d = 26 into n+d=46
  • n+26=46
  • n=20
  • Check by subbing n=20 and d=26 into 0.05n +0.1d
  • 0.05(20) +0.1(26)
  • 1+2.6 = 3.6
You might be interested in
Sara is building a circular garden with a radius of 14 m. She can buy the fencing in
mojhsa [17]

Answer:

she need to buy 9 packs

Step-by-step explanation:

C = 2πr

= 2·3.14·14

= 87.92 m

she need to buy 9 packs

5 0
3 years ago
Read 2 more answers
What is a solution to (x + 6)(x + 2) = 60 A. x = −6 B. x = −4 C. x = 4 Dx = 12 brainly
andreyandreev [35.5K]
Hi,
The answer is C)4 because you can just give 4 to x find it! If you need more explanation, you can comment below this answer!
Hope this helps :)
8 0
3 years ago
What is the equation of a line that is perpendicular to -1 +3y=9 and passes through the point (-3, 2)?​
kati45 [8]

Answer:

y-2 = 3/10(x+3)

Step-by-step explanation:

3y = 10

y = 10/3

looking for perpendicular so slope = 3/10

using the given point

y-2 = 3/10(x+3)

6 0
3 years ago
Read 2 more answers
The sum of two consecutive even numbers is 54. Find the numbers.
Reil [10]
Hi! the numbers are 26 and 28!

26+(26+2) =54
8 0
2 years ago
Kirby is four miles from the train station, from which a train is due to leave in 56 minutes. Kirby is walking along at 3 mph, a
Luda [366]
Let's assume that Kirby walks with a speed 
v_1 = 3 mph
for a time t_1, and that he runs with a speed
v_2 = 12 mph
for a time t_2.

The total time available for Kirby to catch the train is:
t=56 min = 0.93 h
and this must be equal to the sum of the two times t1 and t2:
0.93 = t_1 + t_2 

The distance Kirby should cover is
S=4 m
and this should be equal to the sum of the distances covered by walking and by running:
4 = S_1 + S_2 = v_1 t_1 + v_2 t_2 = 3 t_1 + 12 t_2

So we have a system of 2 equations:
0.93 = t_1 + t_2
4 = 3 t_1 + 12 t_2

If we solve the system, we find:
t_1 = 0.80 h = 48 min
t_2 = 0.13 h = 8 min

So, Kirby needs to run at least for 8 minutes in order to catch the train.
6 0
3 years ago
Other questions:
  • When faced with a problem or choice, humans can use two different strategies: "cognitive reflectivity," which results in slower
    15·1 answer
  • Can you please help me, i dont get it and my teacher wont answer my email to help me pt2
    12·2 answers
  • Abel planned for a garden to be 42 m long but found that it needs to be 24 m long to fit in his backyard. He found the change of
    13·2 answers
  • A fish is 3 feet below the surface of a lake. If its position can be recorded as −3 feet, what would the position of 0 represent
    11·1 answer
  • The diameter of a sphere is measured to be 4.17 in.
    8·1 answer
  • There are 16 girls and 20 boys who want to play basketball. If each team must have the same number of girls and boys on it, how
    12·1 answer
  • The equation y-9+9=-17+9 is an example of which property of equality?
    15·1 answer
  • Which statement is TRUE? A) The area of the blue circle is greater than the sum of the areas of the green square and black circl
    11·1 answer
  • 100 point split nuke yw
    7·2 answers
  • 2x + y = z solve for x
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!