MATHEMATICS MIDDLE SCHOOL

It takes 60 minutes for 7 people to paint 5 walls.How many minutes does it take 10 people to paint 10 walls?

Answers

Answer 1
Answer:

Answer:

84  minutes

Step-by-step explanation:

7 people paint 5 walls in =60 minutes

=>1 people paint 1 walls in = (60X7)/ 5 minutes

=>10 people paint 10 walls in  = (60X7X10)/(5X10) minutes =84  minutes
Answer 2
Answer:

Answer:The answer to this question is  84 minutes

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Solve the equation:  4 1/5 + b = 9 3/5
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I really need help on this one...ASAP!I will try to answer your questions if you answer this soon asap! PLZZZZ!!!What would a equal if 4(a+12) was 32?

h(x)=1/2(x+3)^2 + 2 how is the graph of h(x) translated from the parent graph of a quadratic function, f(x)=x^2

Answers

The graph is translated 3 to the left and 2 up. When adding a number to x inside the parentheses the graph is moved to the left. When adding to x outside the parentheses the graph will move up. The graph is also strerched by 1/2.

Find the distance between the following points: (-1,2) and (3,-2)

Answers

Answer:

5 units

Step-by-step explanation

Graph it out. You graph (-1,2) and (3,-2). Find the distance by seeing how many points are in between (diagnolly n this case)

What number is 3 less than half the sum of 8 and 12?

Answers

Answer:

2,1,0

Step-by-step explanation:
8 x 12 = 96

96:2 = 48

48-3= 45

answer: 45

In playing from the tee, a golfer hooks his drive (hits the ball to the left of the correct direction) at an angle of 24 from the intended direction. He estimates that he has driven the ball 215 yards and that it lies 100 yards from the hole. Assuming his estimates are correct, what is the distance from the tee to the hole, to the nearest yard?

Answers

Answer:

245 yards

Step-by-step explanation:

You could say the tee is at (0, 0) and the hole lies on the x-axis.

The path of the ball is the straight-line so, y = tan(24°)x

215cos(24°) = 196.4

215sin(24°) = 87.4

The ball lands at coordinates (196.4, 87.4).

They say the ball lands 100 yards from the hole, the hole is on a circle of radius 100 that is centered at (196.4, 87.4).

Equation of the circle:

(x-196.4)² + (y-87.4)² = 100²

Since the hole is on the x-axis, it lies at the intersection of the circle and the line y = 0 so:

(x - 196.4)² + (0 - 87.4)² = 100²

x = 244.92

The distance between tee and hole is 245 yards.

Answer:

245 yards

Step-by-step explanation:

What is 480 increased by 25%.
what is the new number?

Answers

The new number is 600.How do we get 600? Here’s how:
 1. First, we have to get the 25% of 480.
      Multiply 480to 25%.
                   480x 25%= n
Change 25% to decimal form.
                   25/100(as per value of % symbol)
                   25% is 0.25So, 480 x 25% = n is:
                 480x 0.25 = 120
  2.  Add 25% of 480 (120)and 480.
                480 + 120 =600
 Therefore, when 480 is increased by 25%, it is 600.  
480 * 25%480 * 0.25480 * 0.25 = 120480 + 120 = 600.480 increased by 25% is 600

Bob knows that water in a geyser is warned by energy from deep within Earth. To investigate this process, he warms 2 L of water from 25°c to 100°c. which property of the water will decrease? F. density G. volume H.kinetic energy I. Thermal energy

Answers

volume and density because steam is escaping, therefore, less water in the end
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