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
Slav-nsk [51]
3 years ago
12

Joann has a certain number of dimes and quarters in her purse, with a total value of $3.75. The

Mathematics
1 answer:
NISA [10]3 years ago
6 0

Answer:

The system of equations 10d+25q=375 and q = 3d-2 can be used to find the numbers of dimes and quarters that Joann has.

Step-by-step explanation:

Given that:

Total value of dimes and quarters = $3.75 = 3.75*100 = 375 cents

One quarter = 25 cents

One dime = 10 cents

Let,

d be the number of dimes

q be the number of quarters

According to given statement,

10d+25q=375

q = 3d-2

Hence,

The system of equations 10d+25q=375 and q = 3d-2 can be used to find the numbers of dimes and quarters that Joann has.

You might be interested in
18 divided by 29 is what pleses answer
DanielleElmas [232]
0.62068966 or 18/29 depending on how you want to set it up.
8 0
2 years ago
Read 2 more answers
The variance of a stock's returns can be calculated as the:
Tamiku [17]

Answer:

The correct option is b.

Step-by-step explanation:

The formula for standard deviation is

\sigma^2=\frac{\sum {(x-\overline{x})^2}}{n}

where, \overline{x} is mean of the data and n is number of observation.

The variance of a stock's returns can be calculated by the above formula.

Variance of stock's returns is the average value of squared deviations from the mean.

Therefore the correct option is b.

4 0
3 years ago
Save Work out the size of angle AED.<br> b) Work out x
Mamont248 [21]

Answer:

x = 10°

Step-by-step explanation:

a). Since, opposite angles of a cyclic quadrilateral are supplementary angles"

   Therefore, in cyclic quadrilateral ABDE,

   m∠ABD + m∠AED = 180°

   110° + m∠AED = 180°

   m∠AED = 180° - 110°

                 = 70°

b). AD = ED [Given]

   m∠EAD = m∠AED [Since, opposite angles of equal sides are equal in measure]

   m∠EAD = m∠AED = 70°

   By triangle sum theorem in ΔABD,

   m∠BAD + m∠ABD + m∠ADB = 180°

   m∠BAD + 110° + 40° = 180°

   m∠BAD = 180 - 150

                 = 30°

    m∠AEB = m∠AED + m∠DAB [By angles addition postulate]

    m∠AEB = 70° + 30°          

                  = 100°

    By triangle sum theorem in the large triangle,

    x° + m∠AEB + m∠EAB = 180°

    x° + 100° + 70° = 180°

    x = 180 - 170

    x = 10°

8 0
2 years ago
1) Evaluate the following expressions.show your work <br> a) 7(m - 8) for m = -4
Akimi4 [234]

Answer:

-84

Step-by-step explanation:

Since m=-4, we can plug -4 into the expression and use PEMDAS

7(m - 8)

7((-4)-8)

7(-12)

-84

4 0
2 years ago
Find the volume of the following figure using unit cubes.
krok68 [10]

Answer:

<h2>        64 units³</h2>

Step-by-step explanation:

2 units × 4 units × 8 units = 64 units³

5 0
3 years ago
Other questions:
  • NEEP HELP QUICKLY PLEASE
    11·2 answers
  • Aarav cleans 6 apartments in 2.5
    15·2 answers
  • The two-way table shows the number of students in a school who like painting and/or dance.
    8·2 answers
  • Divide the reciprocal of 5/6 by the reciprocal of the reciprocal of 5/6
    9·2 answers
  • Absolute value of -6
    6·2 answers
  • A rectangle has an area of 36 square centimeters and a length of 9 centimeters.
    13·2 answers
  • If x can be any number, how many solutions are there for the equation?
    12·2 answers
  • Lola already has 6 pennies, and she plans to save more. In her first week of saving pennies, she will save twice the
    13·1 answer
  • The equation for f and the graph of g are given. How do the period and the amplitude of the functions
    6·1 answer
  • 5/4 (x-2)+2x-4=9 <br> I need help with this please
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!