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
Ad libitum [116K]
3 years ago
7

On average, Debbie can finish 4 algebra problem in 30 minutes. If Debbie works at this rate, how many problems will she solve in

2.5 hours? Justify your answer.
Mathematics
2 answers:
alexandr402 [8]3 years ago
5 0
She will solve 20 problems in 2.5 hours, 4*5 thirty minute sessions=20.
sertanlavr [38]3 years ago
4 0
If 4 = 30, that means 8 = 60 (which is one hour)

that means if 8 = 60, 16 = 120, 

If 120 is 2 hours, we need to add another 30 minutes. 
30 minutes is 4 algebra questions so our answer would be 20 = 150 minutes
150 minutes = 2.5 hours.
You might be interested in
Bruce has a 16 ounces bottle of water that is 1/2 full. He drinks 1/5 of the water left in the bottle. How many ounces of water
Natali5045456 [20]

Answer: 1.6 Ounces.

16/2 is 8.

8/5 is 1.6

You can check this by multiplying 1.6 times 5 then by 2,

8 0
3 years ago
1. Adam has 2.6 gallons of red paint, 2.35 gallons of white paint, and 2 5/8 gallons of blue paint. If he wants to use up the ca
Korvikt [17]
1. B<span>lue

2. 18 units

3. 3 students

4. </span><span>36.75 lbs</span>
7 0
2 years ago
A television regularly selling for $500 is marked down to $300.  
Igoryamba
He saves $200 (the amount of change over the original amount $500

200/500  = 2/5  and 2/5 = 40%  (divide 2 by 5 and get .4 which = 40%)

40% discount is the answer to your question
3 0
3 years ago
Please solve this problem.
just olya [345]

x=number of oranges.

y=number of bananas.

$5

we can suggest this system of equations:

x+y=12

0.5x+0.25y=5

We can solve this system of equations by substitution method.

x=12-y

0.5(12-y)+0.25y=5

6-0.5y+0.25y=5

-0.25y=5-6

-0.25y=-1

y=-1 /- 0.25=4

x=12-y

x=12-4=8

Answer:

<em>Tanya bought 8 oranges and 4 bananas.</em>

4 0
2 years ago
Read 2 more answers
Find the difference when the polynomial -5x^2+3x+8 is subtracted from the polynomial 2x^2+4x+1.
geniusboy [140]

The difference is 7x^{2}  + 1x-7.

Step-by-step explanation:

Step 1:

The polynomial -5x^{2}+3x+8 is subtracted from the polynomial 2x^{2} + 4x +1.

If we write this as an equation, we get

(2x^{2} + 4x +1) -(-5x^{2}+3x+8).

To subtract the polynomials, we group up the terms based on their variables.

In this subtraction, there are two variables i.e. x^{2} and x and there is one constant term.

Step 2:

The subtraction of the x^{2} variables; 2x^{2}  -(-5x^{2} )  = 2x^{2} +5x^{2} = 7x^{2}.

The subtraction of the x variables; 4x - (3x) = 1x.

The subtraction of the constants; 1-(8) = -7.

So (2x^{2} + 4x +1) -(-5x^{2}+3x+8) = 7x^{2}  + 1x-7.

4 0
3 years ago
Other questions:
  • Simplify the expression -4(-10 + 2n)
    10·1 answer
  • Which answer is the solution to the equation -6x+4= -8x-12
    14·1 answer
  • If x5 = y3, then x = ?
    14·1 answer
  • Please someone help me answer this
    12·1 answer
  • If sin pheta &lt; 0 and tan pheta &lt; 0 then:​
    15·1 answer
  • Write a number sentence using "of" to describe what portion of the brownie pan with purchased
    6·1 answer
  • PLEASE HELP ASAP!!! It is urgent please.
    12·1 answer
  • What is the equation of the line that passes through the point (2,7) and has a slope of 6?
    12·1 answer
  • Pls help, due in a few minutes​
    13·1 answer
  • Question 5 (4 points)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!