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Sliva [168]
2 years ago
9

Paulo can run a marathon in four hours and 20 minutes. If he's able to cut of 18% of his time, how long will it take him to run

a marathon
Mathematics
1 answer:
Inga [223]2 years ago
7 0
Cut out 18%
100=all,
all-cut out=remaining
100-18=82

4hrs 20mins=240+20mins=260mins
82% of 260 is 0.82*20=213.2=3 hours and 33.2 minutes

he can runi s 3 hours and 33.2 minutes
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Someone please help me? I don't know how to solve these :/
forsale [732]
2x^2 - x - 6 = 0

(2x - 3) (x + 2) = 0

2x - 3 = 0

2x = 3

x =  \frac{3}{2}

x + 2 = 0

x = -2

x =  \frac{3}{2} , 2
7 0
3 years ago
Read 2 more answers
Jeremy find the cost by adding the percents. 25% off of $60 is equal to 15% off of $60, then subtracting 10% from that cost is e
bonufazy [111]

Answer:

a. 25% off of $60 is equal to $45.

b. 15% off of $60, then subtracting 10% from that cost is equal to $45.

c. The two total costs are $45 and $45, and their addition is equal to $90 (i.e. $45 + $45 = $90).

Step-by-step explanation:

These can be determined as follows:

a. Calculation of the first total cost, i.e. 25% off of $60

25% of 60 = 25% * $60 = 15

First total cost = 25% off of $60 = $60 - (25% of $60) = $60 - $15 = $45

Therefore, 25% off of $60 is equal to $45.

b. Calculation of the second total cost, i.e. 15% off of $60, then subtracting 10% from that cost

15% of $60 = $9

10% of $60 = $6

Cost = 15% off of $60 = $60 - (15% of $60) = $60 - $9 = $51

Second total cost = Cost - (10% of $60) = $51 - $6 = $45

Therefore, 15% off of $60, then subtracting 10% from that cost is equal to $45.

c. The two total costs

The two total costs are 25% off of $60 which is equal to $45 and 15% off of $60, then subtracting 10% from that cost which is also equal to $45. The addition of the two costs is $90 (i.e. $45 + $45 = $90).

Therefore, the two total costs are $45 and $45, and their addition is equal to $90 (i.e. $45 + $45 = $90).

7 0
3 years ago
I need help ASAP please ant thank you <br> what is x
Marizza181 [45]

Answer:

(3x-17)°+(x+40)°+(2x-5)°=180°[sum of angle of triangle]

6x°+18°=180°

6x°=180°-18°

x°=162°÷6°

x°=27°

Again,

=3x-17. 2x-5. x+40°

=3×27-17. =2×27-5. =27+40

=64°. =49°. =67°

6 0
2 years ago
Simplify, if x = 2 and y = -1: 3(y + 2)^2 + 3x
svet-max [94.6K]

Answer:

9

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Step-by-step explanation:

<u>Step 1: Define</u>

3(y + 2)² + 3x

x = 2

y = -1

<u>Step 2: Evaluate</u>

  1. Substitute:                    3(-1 + 2)² + 3(2)
  2. Add:                              3(1)² + 3(2)
  3. Exponents:                   3(1) + 3(2)
  4. Multiply:                        3 + 6
  5. Add:                              9
5 0
3 years ago
For t=2, 15t-2t is equal to ?
lidiya [134]
15(2)-2(2)

30-2(2)

30-4

your answer should be 26!
6 0
3 years ago
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