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
ratelena [41]
3 years ago
15

$642.48 rounded to the nearest dollar is _____.

Mathematics
2 answers:
babymother [125]3 years ago
7 0

Answer:

$642.48

Step-by-step explanation:

wolverine [178]3 years ago
4 0

Answer:

$642

Step-by-step explanation:

5 and up rounds up. 4 and under does not.

You might be interested in
Name all of the radii of the circle. Ok guys im soooo sorry!!!
stich3 [128]

Answer: B

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Two integers, a and b, have a product of 36. What is the least possible sum of a and b?
Minchanka [31]
<h3>Answer:  12</h3>

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

Explanation:

The two integers multiply to 36, so,

ab = 36

which solves to

a = 36/b

Then we want to add the numbers such that we get the smallest possible result.

a+b = (36/b)+b

So we want (36/b)+b to be as small as possible.

Let's say we replace b with x and we consider this function

f(x) = (36/x) + x

The goal is to find when f(x) is smallest, ie, we want to minimize the function.

If we were to graph out the function, we get the curve shown below.

To make things easier, we'll only focus on positive values of x.

The lowest part of the curve is what we're after. Using the "minimum" function/feature on the graphing calculator, we would then find the lowest point occurs at (6,12). This point is considered a local minimum because it's the lowest point in that given neighborhood of x values.

So the input x = 6 leads to the smallest output f(x) = 12.

This in turn means b = 6 is going to pair with a = 36/b = 36/6 = 6.

In short, a = 6 and b = 6.

----------------------

As a check,

a*b = 6*6 = 36

a+b = 6+6 = 12

We can make a table of various values to help confirm that 12 is the smallest sum.

Side note: If you're not allowed to use a graphing calculator, then you'll need to use calculus.

8 0
2 years ago
At 3:20, what is the measure in degrees of the lesser angle formed by the hour hand and the minute hand
gregori [183]

Answer: 30 degrees

Step-by-step explanation:

7 0
2 years ago
The sum of two numbers is 41 and their difference is 5. what are the two numbers
antoniya [11.8K]
This answer is 23 & 18.

Hope this is helpful!
5 0
3 years ago
what will come in the following series 20 25 23 28 26 31 29 34 _? answer is 31. please explain how?? urgent pls​
Assoli18 [71]

The series of numbers is adding 5 and then subtracting 2

20+5=25

25-2=23

23+5=28

28-2=26

and so on. Do you understand?

7 0
3 years ago
Other questions:
  • CHECK MY ANSWER. Geometry. Do not bother answering if you don't know what you're doing. In a 30-60-90 triangle, what is the leng
    15·1 answer
  • The graph of the function f(x) = x3 – 2x2 – 19x + 20 intersects the x-axis at the points (–4, 0), (1, 0), and (5, 0) as shown.
    11·2 answers
  • What is the interquartile range of the set of data represented by the following box-and-whisker plot?
    11·2 answers
  • What is 3 hours in a fraction form
    5·2 answers
  • A quadratic function that has the vertex (-2, -4) and passes through the point (-1, -6)
    7·1 answer
  • How can technology be used to create constructions in gemoetry
    8·1 answer
  • Plz help, I promise I will give brainliest
    14·2 answers
  • A circle has a radius of 13 cm what is the diameter of the circle? What is the circumference of the circle? What is the area of
    7·1 answer
  • 42 percent of what number is .21
    10·1 answer
  • Each question in the test was worth an equal number of points. Chris answered 6 questions incorrectly. How many questions did th
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!