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4 years ago

The graph below represents the number of calories burned for every hour

Mathematics

1 answer:

Zinaida [17]4 years ago

4 0

Answer:

B. Walking burns calories at a rate of of 120 calories per hour.

Step-by-step explanation:

Hope this helps.

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The ratio of the geometric mean and arithmetic mean of two numbers is 3:5, find the ratio of the smaller number to the larger nu

IgorC [24]

Answer:

$\frac{1}{9}$

Step-by-step explanation:

Let the numbers be x,y, where x>y

The geometric mean is

$\sqrt{xy}$

The Arithmetic mean is

$\frac{x + y}{2}$

The ratio of the geometric mean and arithmetic mean of two numbers is 3:5.

$\frac{ \sqrt{xy} }{ \frac{x + y}{2} } = \frac{3}{5}$

We can write the equation;

$\sqrt{xy} = 3$

$xy = 9 - - - (2)$

and

$\frac{x + y}{2} = 5$

$x + y = 10 - - - (2)$

Make y the subject in equation 2

$y = 10 - x - - - (3)$

Put equation 3 in 1

$x(10 - x) = 9$

$10x - {x}^{2} = 9$

${x}^{2} - 10x + 9 = 0$

$(x - 9)(x - 1) = 0$

$x =1 \: or \: 9$

When x=1, y=10-1=9

When x=9, y=10-9=1

Therefore x=9, and y=1

The ratio of the smaller number to the larger number is

$\frac{1}{9}$

3 0

3 years ago

Please help me, very important 20 points!

kipiarov [429]

x=96

all interior angles equal 180

Subtract exterior andgles by 180 to get interior angles because they are supplementary

180-134=46

180-130=50

Get the third angle inside the triangle

180-50-46=84

subtract by 180 to get x because they are supplementary

180-84=96

Therefore x =96

4 0

3 years ago

How can I get the answer 24 by only using the numbers 8,8,3,3.

soldier1979 [14.2K]

8÷(3-(8÷3))
8 divided by 3 minus 8 divided by 3.
Make sure to include the brackets otherwise the answer will not work.

7 0

3 years ago

Julie built a tower of blocks that stood 22.5 cm tall. Each block is 1.5 cm tall. How many blocks are in the tower? A. 16 B. 15

sergejj [24]

22.5 cm* (1 block/ 1.5 cm)= 15 blocks.

The correct answer is B. 15~

7 0

3 years ago

Read 2 more answers

Given that 1 inch = 2.54 cm, how many centimeters are there in 7 feet? Answers may be written using decimals form and should be

vodomira [7]

Answer:

There are 213.36 centimeters in 7 feet.

Step-by-step explanation:

It is given that:

1 inch = 2.54 cm

We have to find centimeters in 7 feet.

We will convert feet to inches.

1 feet = 12 inches

7 feet = 12*7 = 84 inches

Now,

1 inch = 2.54 cm

84 inches = 2.54 * 84

84 inches = 213.36 cm

Therefore,

There are 213.36 centimeters in 7 feet.

5 0

3 years ago