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
vaieri [72.5K]
2 years ago
8

Four whole numbers are each rounded to the nearest 10

Mathematics
1 answer:
alina1380 [7]2 years ago
6 0

Answer:

Step-by-step explanation:

90÷4=22.5

30+20+20+20=90

original number with greatest value are 34,24,23,22

greatest sum=34+24+23+22=103

You might be interested in
Julio says, "If you subtract 19 from my number and multiply the difference by - 7, the result is - 28." What is Julio's number?
ra1l [238]

Answer:

23

Step-by-step explanation:

Basically I did it backwards & opposites:

-28 divided by -7 = 4

4 + 19 = 23

I checked btw and it worked.

4 0
2 years ago
What is the equation of the line described below written in slope-intercept form? the line passing through point (0, 0) and para
Igoryamba
Y=-1.5x or y=-(3/2)x
5 0
3 years ago
Read 2 more answers
A tank contains 30 lb of salt dissolved in 500 gallons of water. A brine solution is pumped into the tank at a rate of 5 gal/min
Dmitry [639]

At any time t (min), the volume of solution in the tank is

500\,\mathrm{gal}+\left(5\dfrac{\rm gal}{\rm min}-5\dfrac{\rm gal}{\rm min}\right)t=500\,\mathrm{gal}

If A(t) is the amount of salt in the tank at any time t, then the solution has a concentration of \dfrac{A(t)}{500}\dfrac{\rm lb}{\rm gal}.

The net rate of change of the amount of salt in the solution, A'(t), is the difference between the amount flowing in and the amount getting pumped out:

A'(t)=\left(5\dfrac{\rm gal}{\rm min}\right)\left(\left(2+\sin\dfrac t4\right)\dfrac{\rm lb}{\rm gal}\right)-\left(5\dfrac{\rm gal}{\rm min}\right)\left(\dfrac{A(t)}{50}\dfrac{\rm lb}{\rm gal}\right)

Dropping the units and simplifying, we get the linear ODE

A'=10+5\sin\dfrac t4-\dfrac A{10}

10A'+A=100+50\sin\dfrac t4

Multiplying both sides by e^{10t} allows us to identify the left side as a derivative of a product:

10e^{10t}A'+e^{10t}A=\left(100+50\sin\dfrac t4\right)e^{10t}

\left(e^{10}tA\right)'=\left(100+50\sin\dfrac t4\right)e^{10t}

e^{10t}A=\displaystyle\int\left(100+50\sin\dfrac t4\right)e^{10t}\,\mathrm dt

Integrate and divide both sides by e^{10t} to get

A(t)=10-\dfrac{200}{1601}\cos\dfrac t4+\dfrac{8000}{1601}\sin\dfrac t4+Ce^{-10t}

The tanks starts off with 30 lb of salt, so A(0)=30 and we can solve for C to get a particular solution of

A(t)=10-\dfrac{200}{1601}\cos\dfrac t4+\dfrac{8000}{1601}\sin\dfrac t4+\dfrac{32,220}{1601}e^{-10t}

6 0
3 years ago
the stove you have to bake in is an old one and only has the temperature in ° Fahrenheit. You are making rusks and have to dry t
nalin [4]

Answer:

80^{\circ} C

Step-by-step explanation:

You are making rusks and have to dry them overnight at a temperature of 176° F.

The given temperature is in Fahrenheit. We need to convert it into °C.

The relation between Fahrenheit and  °C is given by :

C=\dfrac{5}{9}(F-32)

Put F = 176

So,

C=\dfrac{5}{9}(176-32)\\\\C=\dfrac{5}{9}\times 144\\\\C=80^{\circ} C

So, the temperature is equal to 80^{\circ} C.

3 0
2 years ago
Which fraction is equal to 1/5
erma4kov [3.2K]
Its either 2/10 or 5/25
3 0
3 years ago
Other questions:
  • What’s the percent of change of 100 acres to 140 acres
    11·1 answer
  • Which store has the better buy? 6 cans for $5 or 8 cans $9
    15·2 answers
  • You want to compute a 90% confidence interval
    7·1 answer
  • If the area of Bianca’s rectangular backyard patio is represented by the expression x2−18x + 81, and the length of the patio is
    9·1 answer
  • Jaden made a pot of chili with 64 ounces of ground beef and 2 tablespoons of chili powder. How many pounds of ground beef per ta
    14·2 answers
  • Find the solution of y = 5x – 4 for x = –6.
    10·1 answer
  • Please help ill do anything and no links
    8·2 answers
  • Please help me please i really need help
    7·2 answers
  • A chi-squared curve is symmetric about 0
    9·1 answer
  • 2 Quick algebra 1 question for 50 points!
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!