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Leokris [45]
3 years ago
14

Beth has 30 days to train for the Olympics. She swims 20 laps on the first day, then each day after that she swims two more laps

that the previous day. So, she swims 22 laps on the second day, 24 laps on the third day, and so on.
Mathematics
1 answer:
hjlf3 years ago
7 0
Wait, what’s the question?
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Chad's bedroom floor is 18 feet long and 13 feet wide. He has an area rug on his floor that is 2 feet long and 8 feet wide.
igor_vitrenko [27]

9514 1404 393

Answer:

  • D Subtract 2 × 8 from 18 × 13.
  • E Subtract 16 from 18 × 13.

Step-by-step explanation:

To find the area not covered, the rug area must be subtracted from the floor area. Each of those areas is the product of their respective dimensions. The statements describing that subtraction are ...

  D Subtract 2 × 8 from 18 × 13.

  E Subtract 16 from 18 × 13.

6 0
3 years ago
A cereal company puts a small plastic bear in some of its cereal boxes. Customers who collect 10 of these bears win a grand priz
Fofino [41]

Answer:

D. I think

Step-by-step explanation:

5 0
3 years ago
A swimming pool is filled with water by using two taps A and B. Alone, it takes tap A 3 hours less than B to fill the same pool.
iris [78.8K]

Answer:

Tap A 3hrs

Tap B 6hrs

Step-by-step explanation:

Let the volume of the swimming pool be Xm^3.

Now, to get the appropriate volume, we know we need to multiply the rate by the time. Let the rate of the taps be R1 and R2 respectively, while the time taken to fill the swimming pool be Ta and Tb respectively.

x/Ta= Ra

x/Tb= Rb

X/(Ra + Rb)= 2

Ta = Tb - 3

From equation 2:

X = 2( Ra + Rb)

Substituting the values of Ra and Rb Using the first set of equations

X = 2( x/Ta + x/Tb)

But Ta = Tb - 3

1/2 = 1/(Tb - 3)+ 1/Tb

0.5 = (Tb + Tb-3)/Tb(Tb - 3)

At this juncture let’s say Tb = y

0.5 = (2y - 3)/y(y - 3)

y(y-3 ) = 4y - 6

y^2 -3y - 4y + 6 = 0

y^2 -7y + 6= 0

Solving the quadratic equation, we get y =

y = Tb = 6hrs or 1hr

We remove one hour as we know that Tap A takes 3hrs left than tap B and there is nothing like negative hours

Now, we get Ta by Tb -3 = 6 - 3 = 3hrs

5 0
3 years ago
4x+10=x+5+50 What is the answer to this equation
xxMikexx [17]

Answer:

x=15

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Evaluate the expression XY FOR X=8 and Y=4
vovangra [49]

Answer:

32

Step-by-step explanation:

XY means x times y

and x = 8 or x is 8

and y = 4 or y is 4

so 4 times 8 is 32

so

XY = 32

4 0
2 years ago
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