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
TiliK225 [7]
3 years ago
13

Janet has three times as many dimes as nickels and twice as many quarters as nickels. If she has $5.10 in all, how many nickels,

dimes, and quarters does she have? If n represents the number of nickels Janet has, which of the following equations could be used to solve the problem?
a). 5n + 10n + 25n = 510
b). n + 3n + 2n = 510
c). 5n + 30n + 50n = 510
Mathematics
1 answer:
Mama L [17]3 years ago
6 0
If number of nickel = n
number of dimes = 3n
number of quarters = 2n

Amount of nickel = 5n
Amount of dimes = 30n
Amount of quaters = 50n

Total Amount = <span>5n + 30n + 50n = 510

In short, Your Answer would be Option C

Hope this helps!</span>
You might be interested in
Two 5-year girls, Alyse and Jocelyn, have been training to run a 1-mile race. Alyse's 1 mile time A is approximately Normally di
tatyana61 [14]

Answer:

1.7 × 10⁻⁴

Step-by-step explanation:

The question relates to a two sample z-test for the comparison between the means of the two samples  

The null hypothesis is H₀:  μ₁ ≤ μ₂

The alternative hypothesis is Hₐ: μ₁ > μ₂

z=\dfrac{(\bar{x}_1-\bar{x}_2)-(\mu_{1}-\mu _{2} )}{\sqrt{\dfrac{\sigma_{1}^{2} }{n_{1}}-\dfrac{\sigma _{2}^{2}}{n_{2}}}}

Where;

\bar {x}_1 = 13.5

\bar {x}_2 = 12

σ₁ = 2.5

σ₂ = 1.5

We set our α level at 0.05

Therefore, our critical z = ± 1.96

For n₁ = n₂ = 23, we have;

z=\dfrac{(13.5-12)-(0)}{\sqrt{\dfrac{2.5^{2} }{23}-\dfrac{1.5^{2}}{23}}} = 3.5969

We reject the null hypothesis at α = 0.05, as our z-value, 3.5969 is larger than the critical z, 1.96 or mathematically, since 3.5969 > 1.96

Therefore, there is enough statistical evidence to suggest that Alyse time is larger than Jocelyn in a 1 mile race on a randomly select day and the probability that Alyse has a larger time than Jocelyn is 0.99983

Therefore;

The probability that Alyse has a smaller time than Jocelyn is 1 - 0.99983 = 0.00017 = 1.7 × 10⁻⁴.

8 0
3 years ago
If each cube has edges .5 inches long, what is the volume of the prism?
Gre4nikov [31]
.20 is the correct answer
6 0
3 years ago
Read 2 more answers
You flip a coin and then roll a fair six-sided die. The coin lands heads-up and the die shows an even number.
NNADVOKAT [17]

Answer:

1/6

Step-by-step explanation:

If you're asking for the probability that the coin is heads and the die is even. Hope this helps :)

1/3*1/2= 1/6

6 0
3 years ago
Read 2 more answers
I need to know the whole process of this equation
Nat2105 [25]
X=-8/z-2y...
z=2y-8/x...
y=xz/2+4
8 0
3 years ago
The coordinates of point P on a coordinate grid are (−5, −6). Point P is reflected across the y-axis to obtain point Q and acros
Scilla [17]
Reflection of point (x ,y) about x axis is given by (x,-y) and about y axis is given by (-x,y) .treat the line as plane mirror about which you have to find out point reflection .thus Q is (5 ,-6) and R is(-5,6)..
5 0
3 years ago
Other questions:
  • PLEASE!EXTRA CREDIT!20 POINTS!!
    12·1 answer
  • Which equation can you solve to find the potential solutions to the equation log2x + log2(x – 6) = 4?
    6·2 answers
  • If the outliers are not included, what is the mean of the data set?
    6·2 answers
  • The Eagles basketball team scored 12 more than 2 times as many points in the last game of the season than in the first game. Whi
    6·1 answer
  • What factors of 56 are multiples of 2
    5·1 answer
  • What is the number of parking space covered by the car?
    15·1 answer
  • Luther owns a farm where he grows red and green tomatoes. He sells both types of tomatoes for $1.70 per pound . One customer bro
    13·1 answer
  • A large pizza costs $17.99. A second large pizza is 14 off. Using an estimate, approximately how much will it cost for 2 large p
    13·1 answer
  • The average distance from Earth to the Sun is 92.95 million miles. The actual distance varies from the average by up to 1.55 mil
    11·1 answer
  • Fill in the missing number. % of 96 = 24 Submit​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!