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
IrinaK [193]
3 years ago
8

Estimate a 25% tip on a bill of $68.28 by first rounding the bill amount to the nearest ten dollars.

Mathematics
1 answer:
BARSIC [14]3 years ago
6 0

Answer:

A 25% tip on a bill of $68.28 rounded to $70 would be <u>$17.50</u>

STEPS

<em>Step 1: </em>Round $68.28 to $70.00

<em>Step 2:</em> convert 25% to a decimal-------- .25

<em>Step 3:</em> multipy .25 x 70= 17.5

Let me know if you need any other help!!

You might be interested in
I would appreciate some help on this if anyone could answer it
Anuta_ua [19.1K]

Answer:

Step-by-step explanation:

yea

7 0
3 years ago
3500 calories for 6 servings of pie ________ calories per serving is what?
OleMash [197]

Answer:

583 rounded to the nearest whole number

Step-by-step explanation:

other wise 583.3333333333333333333333333333

8 0
2 years ago
Read 2 more answers
Find the absolute extrema for f(x,y)=4-x^2-y^4+1/2y^2 over the closed disk D:x^2+y^2 is less than or equal to 1
algol [13]

Find the critical points of f(x,y):

\dfrac{\partial f}{\partial x}=-2x=0\implies x=0

\dfrac{\partial f}{\partial y}=y-4y^3=y(1-4y^2)=0\implies y=0\text{ or }y=\pm\dfrac12

All three points lie within D, and f takes on values of

\begin{cases}f(0,0)=4\\f\left(0,-\frac12\right)=\frac{65}{16}\\f\left(0,\frac12\right)=\frac{65}{16}\end{cases}

Now check for extrema on the boundary of D. Convert to polar coordinates:

f(x,y)=f(\cos t,\sin t)=g(t)=4-\cos^2-\sin^4t+\dfrac12\sin^2t=3+\dfrac32\sin^2t-\sin^4t

Find the critical points of g(t):

\dfrac{\mathrm dg}{\mathrm dt}=3\sin t\cos t-4\sin^3t\cos t=\sin t\cos t(3-4\sin^2t)=0

\implies\sin t=0\text{ or }\cos t=0\text{ or }\sin t=\pm\dfrac{\sqrt3}2

\implies t=n\pi\text{ or }t=\dfrac{(2n+1)\pi}2\text{ or }\pm\dfrac\pi3+2n\pi

where n is any integer. There are some redundant critical points, so we'll just consider 0\le t< 2\pi, which gives

t=0\text{ or }t=\dfrac\pi3\text{ or }t=\dfrac\pi2\text{ or }t=\pi\text{ or }t=\dfrac{3\pi}2\text{ or }t=\dfrac{5\pi}3

which gives values of

\begin{cases}g(0)=3\\g\left(\frac\pi3\right)=\frac{57}{16}\\g\left(\frac\pi2\right)=\frac72\\g(\pi)=3\\g\left(\frac{3\pi}2\right)=\frac72\\g\left(\frac{5\pi}3\right)=\frac{57}{16}\end{cases}

So altogether, f(x,y) has an absolute maximum of 65/16 at the points (0, -1/2) and (0, 1/2), and an absolute minimum of 3 at (-1, 0).

5 0
3 years ago
What is the answer to 10 to the 2nd power times 5/2 is ?
katrin2010 [14]
Answer: 250
10 times itself or 10^2 = 100
(100)(5)=500
500/2= 250
5 0
3 years ago
in science class 2/3 of the students have a sister. Of the students who have a sister 1/2 have a brother which model shows the f
faust18 [17]

Answer:

1/3

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • What is 30% written as a decimal rounded to the thounsandths place
    11·1 answer
  • What is 1/18 plus 5/6 in simplest form
    8·2 answers
  • Which algebraic equation models the English sentence, a number subtracted from 8 is equal to 4?
    5·1 answer
  • Annie dome worked from 8:15 am to 11:45 am and from 12:30 pm to 4:15 pm. How many hours did she work?
    12·2 answers
  • Solve 2x + -3 = -23 algebraically
    10·2 answers
  • Need help with the answers that have been left Blank don’t understand how to do them
    12·1 answer
  • See screenshot below​
    12·2 answers
  • The safety rules for a playground state that the height of the slide and the distance from the base of the ladder to the front o
    7·1 answer
  • HELP PLS Describe two real-life situations that could be represented by the graph below
    14·2 answers
  • 1. What two key
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!