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3 years ago

What is the answer to this question?

Mathematics

1 answer:

MrRissso [65]3 years ago

3 0

I am not so sure, but I think it’s false, cuz most angles are 90*, but if they mean that the angles are getting spread, or wider then it’s true

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I do not understand this at all, can someone please help me with the steps in each question

Mandarinka [93]

Answer:

285 min

275 min

chi

tie

Step-by-step explanation:

swim - 1.5 km

bicycle ride - 40 km

run - 10 km

1) Alexandra

swim time = distance / velocity = 1.5 / 5 = 0.3 hr = 18 min

transition 1 time = 4 min

cycling time = distance / velocity = 40 / 15 = 2.6666667 hr = 160 min

transition 2 time = 3 min

run time = distance / velocity = 10 / 6 = 1.6666667 hr = 100 min

so total time to complete the triathlon is

= 18 + 4 +160 + 3 +100

= 285 min = 4.75 hrs

2) Chi

swim time = distance / velocity = 1.5 / 6 = 0.25 hr = 15 min

transition 1 time = 5 min

cycling time = distance / velocity = 40 / 15 = 2.6666667 hr = 160 min

transition 2 time = 5 min

run time = distance / velocity = 10 / 7.5 = 1.3333333 hr = 80 min

got flat tire that took 10 min to fix

so total time to complete the triathlon is

= 15 + 5 + 160 + 5 + 80 + 10

= 275 min

3) Alexandra won the race by 10 min

4)even though chi got flat tire , chi still won the race by 10 min,

if it took 20min to fix flat tire both their times would be 285 min and it would have been a tie.

6 0

3 years ago

An artist cuts the bottom 4 inches from an empty sphere with a radius of 12 inches to make a bowl. How long, to the nearest tent

Zolol [24]

We have been given that an artist cuts the bottom 4 inches from an empty sphere with a radius of 12 inches to make a bowl. We are asked to find the length of the rim of the bowl.

The rim of the bowl will be equal to the perimeter of circle with radius of 12 inches.

$\text{Perimeter of circle}=2\pi r$ , where r represents radius of circle.

$\text{Perimeter of circle}=2\pi (12\text{ inches})$

$\text{Perimeter of circle}=24\pi \text{ inches}$

$\text{Perimeter of circle}=75.39822 \text{ inches}$

$\text{Perimeter of circle}\approx 75.4 \text{ inches}$

Therefore, the rim of the bowl is approximately 75.4 inches.

6 0

3 years ago

Solve the simultaneous equations: 5x + 3y = 9 7x - 2y = 25 x=__ y=__

kondor19780726 [428]

Answer:

x= 3, y= -2

Step-by-step explanation:

5x+3y= 9

x= 25÷7 + 2÷7 y

5(25÷7 +2÷7 y)

5( 25÷7 +2÷7 y ) + 3y= 9

y= -2

x= 25÷7 + 2÷7 x (-2)

x= 3

5 0

3 years ago

How do I solve for x? (the picture has the problem)

max2010maxim [7]

Answer:

x = 21.013155617496

Step-by-step explanation:

we have a right triangle then ,

$\cos \left( 36\right) =\frac{17}{x}$

Then

$x=\frac{17}{\cos \left( 36\right) } = 21.013155617496$

Then

x ≈ 21

5 0

2 years ago

Read 2 more answers

Is this a complementary ,linear pair,vertical or adjacent?

vovangra [49]

Answer: Linear

Explanation: A linear pair of angles is formed when two lines intersect. Two angles are said to be linear if they are adjacent angles formed by two intersecting lines. The measure of a straight angle is 180 degrees, so a linear pair of angles must add up to 180 degrees.

6 0

3 years ago