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2 years ago

Quick pleaseeeeeeeeeeeee!!!!

Mathematics

1 answer:

pentagon [3]2 years ago

7 0

Answer:

plot points at (0,4),(3,1),(5,7),(8,5)

Step-by-step explanation:

hope this helps (:

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Does 5, 7, and 9 make a right angle?

Oksanka [162]

Step-by-step explanation:

For a triangle to have a right angle the square sums of the legs have to equal the square of the hypotenuse.

In this case 9 is the hypotenuse which is the longest side in a triangle. 5 and 7 are the two smaller sides which make them the legs.

Putting this set of numbers into the pythagorean theorem is the way to solve this.

5²+7² should equal 9² if the triangle is a right triangle.

Solve the squares: 25+49=81

This would add up to be 74 and that is not equal to 81, so by this statement we can conclude that 5, 7, and 9 do not make a right triangle.

4 0

1 year ago

Nicole did an aerobics and a yoga class for a total of 1 hour and 10 minutes. The yoga class was 30 minutes longer than the aero

Taya2010 [7]

Answer:
yoga class- 50 minutes
aerobics class- 20 minutes
total- 70 minutes (or 1 hour and 10 minutes)

6 0

2 years ago

Find the area of a circle with a diameter of 56 millimeters.

ANEK [815]

Answer: 784π mm²

Step-by-step explanation: To find the area of a circle, start with the formula for the area of a circle which is shown below.

Area = πr²

Notice that here, we're given the diameter instead of the radius.

Remember that the radius is equal to half of the diameter. So the radius of this circle will be equal to half 56 millimeters or 28 millimeters.

So plugging into the formula, we have (π)(28 mm)².

A common mistake is to plug 56 millimeters into the formula but remember that we must plug in the radius and not the diameter.

Multiplying, (28 mm)² is equal to (28 mm)(28 mm) or 784 mm².

So we have 784π mm².

So the area of the circle is 784π mm².

6 0

3 years ago

Can someone please explain?!

Hoochie [10]

Infinite! You can, for example, add -1 and 1 to the equation and make it equal. In x=5, you can have x=5+1-1. and it'd still be the same. To add on to it, you could do x+1-1=5+1-1, etc..

5 0

3 years ago

Can anyone help me solve these math problems?

Veseljchak [2.6K]

Answer:

x = 2
r = 48
3536 ft
√10
10°

Step-by-step explanation:

1. The Pythagorean theorem applies, so the sum of the squares of the legs is equal to the square of the hypotenuse.

x² + (x+3)² = (√29)²

2x² +6x +9 = 29 . . . . . . eliminate parentheses, collect terms

2x² +6x -20 = 0 . . . . . . subtract 29

x² +3x -10 = 0 . . . . . . . . divide by 2

(x +5)(x -2) = 0 . . . . . . . . factor

x = -5 or +2 . . . . . . . . . . . . values that make the factors zero (-5 is extraneous)

The value of x is 2.

2. Even though the figure is drawn incorrectly the Pythagorean theorem still applies. (The second attachment shows the circle in the right place. The figure is not to scale.)

14² + r² = (r+2)²

196 + r² = r² +4r +4 . . . . eliminate parentheses

192 = 4r . . . . . . . . . . . . . .subtract r²+4 from both sides

48 = r . . . . . . . . . . . . . . . . divide by 4

The value of r is 48.

3. You will recognize that the triangle involving the distance above the ground, the distance along the ground, and the straight-line bullet path is an isosceles right triangle. So, the hypotenuse is √2 times the length of either leg. The path length of the bullet is ...

(2500 ft)√2 ≈ 3536 ft

4. see below for the diagram

The length to the terminal point is found using the Pythagorean theorem:

d = √(3² +(-1)²) = √10

The distance from the origin to the terminal point is √10 ≈ 3.16.

5. Angles "a" and "8a" total 90°, so we have ...

a + 8a = 90°

9a = 90° . . . . . . . . collect terms

a = 10° . . . . . . . . . . divide by 9

The value of a is 10°.

8 0

3 years ago