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
inysia [295]
3 years ago
13

Paco bought 3 CDs that cost d dollars each and a pack of gum for C cents. Write an expression for the total cost of his purchase

. 3d + c 3C + d 3d/c
Mathematics
1 answer:
cupoosta [38]3 years ago
3 0

Answer:

The correct option is A) 3d+C.

Step-by-step explanation:

Consider the provided information.

Paco bought 3 CDs that cost d dollars each.

Let d is the cost of each CDs.

The cost of 3 CDs will be 3 times of d.

This can be written as:

3d

He bought a pack of gum for C cent. Thus, we can say that the cost of pack of gum is C.

Now add the cost of gum in above expression.

3d+C

Hence, the required expression is 3d+C.

Thus, the correct option is A) 3d+C.

You might be interested in
Drew works at a laundromat. Every day for two weeks, he records the total number of loads of laundry washed at the laundromat. T
Afina-wow [57]

Answer:

B

Step-by-step explanation:

The first quartile of his data is 60.

The median of his data is 82.

The first quartile Q1 is the median of the lower half of the data set. This means that about 25% of the numbers in the data set lie below Q1 and about 75% lie above Q1.

The median Q2 is the median of  the data set. This means that about 50% of the numbers in the data set lie below Q2 and about 50% lie above Q2.

Between Q1 and Q2 lie exactly 25% of the numbers in the data set.

25% of 200 is exactly 50, so option B is true.

6 0
3 years ago
Let f(x) = cxe−x2 if x ≥ 0 and f(x) = 0 if x < 0.
sergij07 [2.7K]

(a) If <em>f(x)</em> is to be a proper density function, then its integral over the given support must evaulate to 1:

\displaystyle\int_{-\infty}^\infty f(x)\,\mathrm dx = \int_0^\infty cxe^{-x^2}\,\mathrm dx=1

For the integral, substitute <em>u</em> = <em>x</em> ² and d<em>u</em> = 2<em>x</em> d<em>x</em>. Then as <em>x</em> → 0, <em>u</em> → 0; as <em>x</em> → ∞, <em>u</em> → ∞:

\displaystyle\frac12\int_0^\infty ce^{-u}\,\mathrm du=\frac c2\left(\lim_{u\to\infty}(-e^{-u})-(-1)\right)=1

which reduces to

<em>c</em> / 2 (0 + 1) = 1   →   <em>c</em> = 2

(b) Find the probability P(1 < <em>X </em>< 3) by integrating the density function over [1, 3] (I'll omit the steps because it's the same process as in (a)):

\displaystyle\int_1^3 2xe^{-x^2}\,\mathrm dx = \boxed{\frac{e^8-1}{e^9}} \approx 0.3678

5 0
2 years ago
Order the following decimals from least to greatest. 9.036, 9.982, 9.535
Leona [35]
The order is: 9.036, 9.535, and 9.982.
8 0
3 years ago
3. If 2p + q = 11 and p + 2q = 13, then<br> p+q=<br> (A) 6<br> (B) 8<br> (C) 9<br> (D) 12<br> (E) 18
frozen [14]
Answer:
(C) 9

Step by step:
11-2=9 and it’s asking for both p and q combined so no need to worry about that
8 0
2 years ago
Read 2 more answers
3[(11-6) 2 squared divided by5]
Studentka2010 [4]
12 use a calculator i did it
8 0
3 years ago
Other questions:
  • Translate the expression 5X -7 into words
    9·1 answer
  • Multiply and simplify 2/3times 4\5 in fraction form
    15·2 answers
  • Suzanne bakes 350 cookies in 5 hours, and cole bakes 400 cookies in 8 hours Part A: what are the unit rates at which suzanne and
    8·1 answer
  • PLEASE HELP ME I AM ON A TEST
    7·1 answer
  • 1. the figure below is a parallelogram which statement must be true
    7·1 answer
  • What is my namedfdvvn fxf g bfrs gnxs n gfrsx ngrsn gts nn grsw gs nngtws cdrngtsrn w
    11·1 answer
  • The cost of 3 scarves is $72.75. What is the unit price?
    15·1 answer
  • Write the equation of the line in slope-intercept form with slope m=4 through the point (-2,5)
    12·1 answer
  • Which function has an inverse that is also a function?
    8·1 answer
  • Simplify the radical expression -√5q^3*3√35
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!