How to you get the mean in math

Answers

Answer 1

Answer: The "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers.

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The magnitude and direction of two forces acting on an object are 100100 pounds, S7878degrees°E, and 5050 pounds, N5353degrees°E, respectively. Find the magnitude, to the nearest hundredth of a pound, and the direction angle, to the nearest tenth of a degree, of the resultant force.
All of the following expressions represent the sum of n and itself, except _____A.) n + n B.) 2n C.) n²

Find the value of (3 4)2.

Answers

(3 + 4)^2 = (7)^2 = 49

The end zone of a football field is 10 yards deep and 53 yards across. Between the two end zones is the playing field, which is 100 yards long and 53 yards wide. What is the length of the diagonal from the back of one end zone to the back of the other?

Answers

When you put the pieces of the field together, you have a rectangle that's 53 yards
wide and 120 yards long.

When you draw the diagonal, it divides the field into two right triangles.Each one
has legs with lengths of 120 yards and 53 yards. The diagonal of the field is the
hypotenuse of both right triangles.

(120)² + (53)² = (the hypotenuse)²

14,400 + 2,809 = (the hypotenuse)²

17,209 = (the hypotenuse)²

The diagonal (hypotenuse) = √17,209 = 131.183... yards (rounded)

I guess that's the longest straight line it is possible to run on a football field
while staying in bounds.

Pls help ASAP I’ll give brainliest

Answers

Answer:

(A) 44.7°

Step-by-step explanation:

Use the law of cosines:

$cos A=(b^2+c^2-a^2)/(2bc)$
$cos A=(25^2+31^2-22^2)/(2*25*31)=0.711$
m∠A = arccos(0.711) ≈ 44.7°

Using law of cosines

$\n \sf\longmapsto cosA=(b^2+c^2-a^2)/(2bc)$

$\n \sf\longmapsto cosA=(25^2+31^2-32^2)/(2(25)(31))$

$\n \sf\longmapsto cosA=(625+961-484)/(1550)$

$\n \sf\longmapsto cosA=(1102)/(1550)$

$\n \sf\longmapsto cosA=0.7109$

$\n \sf\longmapsto A=cos^(-1)(0.7109)$

$\n \sf\longmapsto A=44.7°$

This is hard for me can anyone help me? 9

Answers

Answer: -12.8x-20y+8.4

Step-by-step explanation: I multiplied the numbers in parentheses by 4.

PLSSSSSSSSSS HELPPPPPP MEEEEEEEEEEE!!!!!!!!!! BIGGGGGGG PARTTTTTTTT OFFFF GRADEEEEE!!!!!!!!!!!!!!Two hikers are 22 miles apart and walking toward each other. they meet in 4 hours. find the rate of each hiker if one hiker walks 1.1 mph faster than the other.

Answers

Answer:

pls give brainliest (answer at bottom)

Step-by-step explanation:

Let's call the rate of the slower hiker "x" mph.

The faster hiker walks 1.1 mph faster than the slower hiker, so their rate is "x + 1.1" mph.

Now, we know that distance = rate × time. In this case, both hikers are walking towards each other, so we can add their distances to get the total distance of 22 miles:

Distance of the slower hiker + Distance of the faster hiker = Total distance

4x + 4(x + 1.1) = 22

Now, let's solve for x:

4x + 4x + 4.4 = 22

Combine like terms:

8x + 4.4 = 22

Subtract 4.4 from both sides:

8x = 22 - 4.4

8x = 17.6

Now, divide by 8 to find the rate of the slower hiker:

x = 17.6 / 8

x = 2.2 mph

So, the slower hiker's rate is 2.2 mph, and the faster hiker's rate is:

x + 1.1 = 2.2 + 1.1 = 3.3 mph

Therefore, the slower hiker walks at 2.2 mph, and the faster hiker walks at 3.3 mph.

caden built a rectangular prism that has a length of 8 units a width of 3 units, and a height of 5 units. what is the volume of the prism. show your work

Answers

To calculate the volume of a prism you multiply the area of it's cross section by the length Therefore 5 x 3= 15 (Area of the rectangle) 15x8= 120 (Volume of prism)

Solutions

Caden built a rectangular prism that has a length of 8 units a width of 3 units, and a height of 5 units.To calculate the volume of the prism you have to multiply the area of it's cross section by the length.

5 x 3= 15 (Area)

15 x 8= 120 (Volume of whole prism)

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