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
Margarita [4]
3 years ago
8

Jennifer has a pocketful of change all in nickels and quarters. There are 11 coins with a total value of $1.15. Which system of

equations can you use to find the number of each type of coin?
n + q = 11
n + q = 1.15

n + q = 11
5n+25q= 1.15

5n +25q =11
n + q = 1.15

n + q = 11
0.05n + 0.25q = 1.15
Mathematics
1 answer:
anygoal [31]3 years ago
7 0

Answer:

n + q = 11

0.05n + 0.25q = 1.15

Step-by-step explanation:

Hi, to answer this question we have to write a system of equations:

n = number of nickel coins

q = number of quarter coins

Since there are 11 coins, the sum of the number of nickels and quarters must be 11:

n+q =11

Since:

1 nickel = $0.05

1 quarter = $0.25

The total value (1.15) must be equal to the product of the number of nickels (n) and the value of each nickel in dollars (0.05); plus the product of the number of quarters (q) and the value of each quarter in dollars (0.25)

0.05n + 0.25q = 1.15

The system is ;

n + q = 11  

0.05n + 0.25q = 1.15

You might be interested in
one evening 1500 concert tickets were sold for the Jazz Fest. Tickets cost $30 for covered pavillion seats and $10 for lawn seat
snow_lady [41]
x-number\ of\ tickets\ for\ pavilion\\1500-x-number\ of\ tickets\ for\ lawn\\\\30x+10(1500-x)=27000\\30x+15000-10x=27000\\30x-10x=27000-15000\\20x=12000\ \ \ \ \ \ \ \ |:20\\\\x=600\\1500-600=900
6 0
3 years ago
The total of a regular polygon's interior angles is 3420°.
DanielleElmas [232]

Step-by-step explanation:

(n-2)×180=3420

180n-360=3420

180n=3420+360

180n=3780

n=3780/180

n=21

that is, the number of sides is 21

to get the size of each exterior angle=

360/21

=17.14°

4 0
2 years ago
HELP QUICK AND FAST WHAT THE ANSWER
earnstyle [38]

10.13+k≤26.83

k≤26.83-10.13

k≤16.70 or 16.7

Answer is B.

4 0
3 years ago
What is the distance between points (11,3) and (4,3) on a coordinate?
Stels [109]

Answer:

7

Step-by-step explanation:

5 0
3 years ago
For women aged 19-24, systolic blood pressures (in mm Hg) are normally distributed with a mean of 114.8 and a standard deviation
Mrac [35]

Answer: p = 0.00714

Step-by-step explanation:

Since the population standard deviation of the distribution is known, the z test ( which produces the z score) is the perfect test for finding the probability of the data set in the question.

From the question,

Population mean (u) = 114.8

Sample mean (x) = 121.5

Population standard deviation (σ) = 13.1

Sample size (n) = 23

The z score formulae is given below as

Z = x - u/σ/√n

Z = 121.5 - 114.8/(13.1/√23)

Z = 6.7/(13.1/√23)

Z = 6.7/2.731

Z = 2.45.

The question is interested in knowing the probability of mean systolic blood pressure greater than 121.5.

This implies that we are looking for the probability at which our z score is greater than 2.45: P(z>2.45)

The z score (z=2.45) has divided the distribution into two regions, z< 2.45 ( area to the left of the distribution) and z>2.45 ( area to the right of distribution).

Hence, p(z>2.45) + p(z<2.45) = 1

To get a the probability, we have to use a standard normal distribution table.

The table we have here gives probability of the distribution to the left ( that's area towards the left), hence we need to find p(z<2.45) first

From the table p(z<2.45) = 0.99286

But p(z>2.45) = 1 - p(z<2.45)

p(z>2.45) = 1 - 0.99286

p(z>2.45) = 0.00714

8 0
3 years ago
Other questions:
  • PLEASE HELP VERY LIMITED ON TIME!!!
    6·1 answer
  • The smallest figurine in a gift shop is 2 inches tall. The height of each figurine is twice the height of the previous figurine.
    9·2 answers
  • HELP!!! TIMED ASSIGNMENT!!!!! PLEASE HELP
    8·1 answer
  • Use the grouping method to factor x3 + x2 + 5x + 5.
    9·1 answer
  • A clothing business finds there is a linear relationship between the number of shirts, n , it can sell and the price, p , it can
    11·1 answer
  • Please tell me the answer and explain it to me I really need it
    9·1 answer
  • Write the population of Raleigh in expanded form and word form
    13·1 answer
  • The top one I need help with
    5·1 answer
  • In 10 words or less, explain what it means for two segments to be parallel.
    14·1 answer
  • HELP PLS NEED HELP <br> IF U KNOW THE ANSWER PLS HELP
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!