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
kozerog [31]
2 years ago
14

Alison has three times as many dimes as quarters in her purse. She has $9.35 altogether. How many coins of each type does she ha

ve?
Mathematics
1 answer:
azamat2 years ago
5 0
<h3>Answers:  17 quarters and 51 dimes</h3>

========================================================

Work Shown:

x = number of quarters

3x = number of dimes

0.25x = value of just the quarters, in dollars

0.10(3x) = 0.30x = value of just the dimes, in dollars

0.25x+0.30x = 0.55x = total value in dollars

0.55x = 9.35

x = (9.35)/(0.55)

x = 17

Alison has <u>17 quarters</u> and 3x = 3*17 = <u>51 dimes</u>

17 quarters = 17*0.25 = $4.25

51 dimes = 51*0.10 = $5.10

17 quarters + 51 dimes = $4.25 + $5.10 = $9.35

The answers are confirmed.

You might be interested in
I can’t do math help
marta [7]

Answer:

i cant either-

Step-by-step explanation:

4 0
3 years ago
Assume that we want to construct a confidence interval. Do one of the​ following, as​ appropriate:_________.
andreyandreev [35.5K]

Answer:

B. z Subscript alpha divided by 2 zα/2 = 1.96.

Step-by-step explanation:

We are given that we want to construct a confidence interval. For this, the summary statistics for randomly selected weights of newborn​ girls:

n = 236​, \bar x = 30.3 ​hg, s = 7.2 hg. The confidence level is 95​%.

As we can clearly see here that the population standard deviation is unknown and the sample size is also very large.

It has been stated that when the population standard deviation is unknown, we should use t-distribution but since the sample size is very large so we can use z distribution also as it is stated that at very large samples; the t-distribution corresponds to the z-distribution.

Here, \alpha = level of significance = 1 - 0.95 = 0.05 or 5%

         \frac{\alpha}{2}=\frac{0.05}{2} = 0.025 or 2.5%

So, the value of Z_(_\frac{\alpha}{2} _) in the z table is given as 1.96 with a 2.5% level of significance.

3 0
4 years ago
What is Measured in length
Oduvanchick [21]

Answer:

One Dimension

Step-by-step explanation:

"Length is a measure of one dimension, whereas area is a measure of two dimensions (length squared) and volume is a measure of three dimensions (length cubed)." ~ GOOGLE

5 0
3 years ago
Read 2 more answers
A real word problem that uses perpendicular.
BaLLatris [955]
One common example of perpendicular lines in real life is the point where two city roads intersect. When one road crosses another, the two streets join at right angles to each other and form a cross-type pattern. Perpendicular lines form 90-degree angles, or right angles, to each other on a two-dimensional plane<span>Other real-world examples of perpendicular lines include graph paper, plaid patterns on fabric, square lines of floor tiles, lines of mortar on brick walls, the intersecting lines of a Christian cross, metal rods on the cooking surface of a barbecue grill, wooden beams in the wall of a house, and the designs on country flags such as Norway, the United Kingdom, Switzerland, Greece, Denmark and Finland. Perpendicular lines form the corner of squares and rectangles in various real-world shapes.Perpendicular lines create four right angles at their intersection point, making 360 degrees total. Perpendicular lines also form one angle of a right triangle. Perpendicular lines are concepts taught in algebra and geometry as students learn to calculate slopes of lines on graph paper.</span><span>Parallel lines differ from perpendicular lines in that parallel lines never intersect. Real-world examples of parallel lines include railroad tracks, stripes on the American flag, power lines hung between poles, lines on composition paper and plugs at the end of electrical cords.</span>.
6 0
4 years ago
Read 2 more answers
Need help pleaseeeeeeeeerereerrrr
dangina [55]

Answer:

The annual premium amount for Rhonda health insuarance is $86.10

Step-by-step explanation:

cost of semimonthly heakth insurance plan: $215.25

60% of the total cost her emplomenty pays: $215.25 x 0.6 = $129.15

homw much she pays: $215.25 - $129.15 = $86.10

6 0
3 years ago
Other questions:
  • What is the product of the polynomials below?
    13·1 answer
  • Which statement best summarizes this passage?
    11·1 answer
  • What is the product of (3a + 2)(4a2 – 2a + 9)?
    8·1 answer
  • the hiking trail is nine tenths of a mile long there are 6 markers evenly posted along the trail to direct hikers how far apart
    14·1 answer
  • ASAP I WILL GIVE BRAINLIEST
    9·2 answers
  • Olivia does chores every Saturday morning. She spends 1/3 of her time cleaning her room. Of the remaining 2/3 of her time, she s
    8·1 answer
  • What is the length of x ??
    9·1 answer
  • Evaluate f^3+11g-4h when f= 3, g=2 and h=7
    11·1 answer
  • PLEASE HELP I NEED GET THIS DONE
    9·1 answer
  • 2.61 is 5.8% of what number?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!