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
Hoochie [10]
2 years ago
9

how many gallons of a 70% antifreeze solution must be mixed with 80 gallons of 25% antifreeze to get a mixture that is 60% antif

reeze?
Mathematics
1 answer:
Law Incorporation [45]2 years ago
6 0

Answer:m(.70)+80(.25)=.6(m+80)

.7m+20=.6m+48

.1m=28

m=28/.1=280 gallons of 25% antifreeze needed

Step-by-step explanation:

You might be interested in
Each of the students im Romi's class raised at least $25 during the jump-a-thon. What is the least amount of money the class rai
EastWind [94]
If each of the 28 students made at least $25, you would multiply 28 and 25 together to obtain the least amount of money the class raised. That gets, 28x25 = 700. The class made at least $700.
8 0
3 years ago
If a student didn’t understand proportional relationships, how would you explain it to them?
kirill [66]

Answer:

Proportional relationships are relationships between two variables where their ratios are equivalent.

Another way to think about them is that, in a proportional relationship, one variable is always a constant value times the other. That constant is know as the "constant of proportionality".

I really recommend watching Khan Academy's video over proportional relationships, the speaker explains it very well!!

7 0
3 years ago
Read 2 more answers
The graph of ƒ(x) = -√x is shifted to the right five units. The domain of the function represented by this graph is x ≥>≤<
Mars2501 [29]

Answer:

Domain = [5,∞)

Step-by-step explanation:

Given: f(x)=-\sqrt{x}

We are given that f(x) is shifted right by 5 units.

Rule : f(x)→f(x-b)

The graph f(x) shifted b units right

So, using rule : -\sqrt{x} →   -\sqrt{x-5}

So, g(x)=-\sqrt{x-5}

Now to find domain:

x-5>0

x>5

So, Domain = [5,∞).

8 0
3 years ago
An airplane on a transatlantic flight took 4 hours 20 minutes to get from New York to its destination, a distance of 3,000 miles
ankoles [38]
738.

3200/4.33= 739.01

The closest to that is 738
4 0
2 years ago
Find the equation for the circle with center (-2,4) and passing through (-1,- 4).
LuckyWell [14K]

Answer:

(x+2)^2 + (y-4)^2 = 65

Step-by-step explanation:

r^2 = (4-(-4))^2 + (-1-(-2))^2 = 65

center = (-2, 4) so you add 2 to x and subtract 4 from y

8 0
2 years ago
Other questions:
  • Work out the area of a parallelogram of base 5m and height 3m
    15·1 answer
  • Evelyn can run 3 miles in 40 minutes. Which equation can be solved to find m, the number of miles Evelyn can run in 60 minutes?
    13·1 answer
  • 6. What is the value of the underlined digit in<br> 5,436,788?
    12·2 answers
  • Please help me with this :)
    8·1 answer
  • Is the equation xº -5x + 6 = 0 quadratic in form?<br> Explain why or why not.
    12·1 answer
  • The ordered pair below is a solution to which equation?
    6·1 answer
  • Solve for x: <br> (X+5)^1/2 = (5-2x)^1/4
    9·1 answer
  • Drag the tiles to the correct boxes to complete the pairs. Solve the inequalities for x and match each solution to its number li
    15·2 answers
  • The math department is putting together an order for new calculators. The
    8·1 answer
  • What could the answer be when you multiply C square
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!