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
Luba_88 [7]
3 years ago
15

The value of Maggie's car decreased by 20% since last year, when she bought it. If the car is now worth $15,000.00, how much was

the car worth when she bought it?
A. $20,000.00

B. $17,647.06

C. $18,000.00

D. $18,750.00
Mathematics
1 answer:
Svetlanka [38]3 years ago
5 0
<u>15,000</u>    x    <u>A</u>          15,000 = .8A
  .80            1.0


<u>15,000</u>   =  A
  .80

A = 18,750    the answer is D 




You might be interested in
What is the slope of line that passes through the points -2,4 and 1,-1​
GalinKa [24]

Answer:

-5/3

Step-by-step explanation:

-2 to 1 =3   x=3

4 to -1=5   y=-5

y/x      slope=-5/3 or -1  2/3

4 0
3 years ago
Answer these questions please.
Ivenika [448]
ABCDEFGH = 22.
HEFG = 12
ABCD = 10
8 0
3 years ago
PLEASE HELP!!!!! What is the value of x in the matrix equation below?
Brums [2.3K]

The given matrix equation is,

1.5\left[\begin{array}{cc}x&6\\8&4\end{array}\right] +y\left[\begin{array}{cc}1&4\\3&2\end{array}\right] =\left[\begin{array}{cc}z&z\\6z&2\end{array}\right].

Multiplying the matrices with the scalars, the given equation becomes,

\left[\begin{array}{cc}1.5x&9\\12&6\end{array}\right] +\left[\begin{array}{cc}y&4y\\3y&2y\end{array}\right] =\left[\begin{array}{cc}z&z\\6z&2\end{array}\right]  \\

Adding the matrices,

\left[\begin{array}{cc}1.5x+y&9+4y\\12+3y&6+2y\end{array}\right]  =\left[\begin{array}{cc}z&z\\6z&2\end{array}\right]  \\

Matrix equality gives,

1.5x+y=z\\ 9+4y=z\\ 12+3y=6z\\ 6+2y=2

Solving the equations together,

y=-2\\ 3y-1.5x=9\\ -1.5x=9+6\\ x=-10

We can see that the equations are not consistent.

There is no solution.

3 0
3 years ago
According to the University of Nevada Center for Logistics Management, 6% of all mer-
Fudgin [204]

Answer:

a) The point estimate of the proportion of items returned for the population of

sales transactions at the Houston store = 12/80 = 0.15

b) The 95% confidence interval for the proportion of returns at the Houston store = [0.0718 < p < 0.2282].

c) Yes.

We set an hypothesis and construct a test statistics. The test statistics result gives us:

Z calculated  = 2.2545, and this gives us the p-value = 0.0121. We assumed 95% confident interval. Hence, the level of significance (α) = 5%. Conclusively, since the p-value ==> 0.0121 is less than (α) = 5%, the test is significant. Hence, the proportion of returns at the Houston store is significantly different from the returns  for the nation as a whole.

Step-by-step explanation:

a) Point estimate of the proportion = number of returned items/ total items sold = 12/80 = 0.15.

b) By formula of confident interval:

CI(95%) = p ± Z*\sqrt{\frac{p*(1-p)}{n} }  =  0.15 \pm 1.96 *\sqrt{\frac{0.15*(1-0.15)}{80} },

CI(95%) = [0.0718 < p < 0.2282]

c) The hypothesis:

H_{0}: The proportion of returns at the Houston store is not significantly different from the returns  for the nation as a whole.

H_{a}: The proportion of returns at the Houston store is significantly different from the returns  for the nation as a whole.

The test statistics:

Z = \frac{\hat{p} - p_{0}}{\sqrt{\frac{p*(1-p)}{n} }}, where p_{0} is the proportion of nation returns.

Z calculated  = 2.2545, and this gives us the p-value = 0.0121. We assumed 95% confident interval. Hence, the level of significance (α) = 5%. Conclusively, since the p-value ==> 0.0121 is less than (α) = 5%, the test is significant. Hence, the proportion of returns at the Houston store is significantly different from the returns  for the nation as a whole.

6 0
3 years ago
HURRY!!!!<br> What is the equation of the line shown in this graph?
zalisa [80]

Answer:

x = - 2

Step-by-step explanation:

The equation of a vertical line parallel to the y- axis is

x = c

Where c is the value of the x- coordinates the line passes through.

The line passes through (- 2, - 3) and (- 2, 2)

Both of these points have an x- coordinate of - 2, thus

x = - 2 ← equation of line

3 0
3 years ago
Other questions:
  • There are two numbers such that sum of the numbers is 22 and the difference of their squares is 44. Find their difference.
    15·2 answers
  • Simplify this expression <br> b+2+5b
    12·2 answers
  • Solve for C:<br><br> C + 8 = -11<br><br> C = _____
    8·2 answers
  • In a survey of 480 students, 253 indicated that play the piano, 268 indicated that they play the harp and 73 indicated they play
    10·1 answer
  • ...................................................................................,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,..........
    5·1 answer
  • The cost of 8 gallons of gasoline can be modeled by C(g) = 2.25g. The amount of gasoline used
    6·1 answer
  • You can work a total of no more than 10 hours each week at your 2 jobs. Housecleaning pays $5 per hour and your sales job pays $
    12·1 answer
  • How young am I if you get it right I will mark you Brainliest
    10·2 answers
  • Arian is making bracelets. For each bracelet, it takes 1/10 hour to pick out materials and 1/4 hour to braid it together. How ma
    8·1 answer
  • URGENT I WILL MARK BRAINLIEST <br>Pick the right answers
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!