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1 year ago

Explain how you would use addition to find the product of -2 and 5

Mathematics

1 answer:

Ipatiy [6.2K]1 year ago

4 0

-2+5=3
And is a word used for addition. For example 20 and 6 is 26.

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Find the value of x. If necessary, write your answer in simplest radical form.

Step2247 [10]

Step-by-step explanation:

PYTHAGORAS THEOREM

${c}^{2} - {b}^{2} = {a}^{2} \\ {7}^{2} - {5}^{2} = {x}^{2} \\ 49 - 25 = 24 \\ \sqrt{24} = 4.89897948557$

8 0

2 years ago

Quadrilateral ABCD has vertices AC-3.6), B(6,0), C(9. -9), and D(0, -3). Prove that ABCD is a) a parallelogram

Nata [24]

9514 1404 393

Explanation:

The quadrilateral will be a parallelogram if the diagonals bisect each other. That will be the case if the sums of their end-point coordinates are the same.

A + C = (-3, 6) +(9, -9) = (6, -3)

B + D = (6, 0) +(0, -3) = (6, -3)

Both diagonals have their midpoint at (3, -1.5), so the diagonals are mutual bisectors. The figure ABCD must be a parallelogram.

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The midpoint of AC is (A+C)/2 = (6, -3)/2 = (3, -1.5).

7 0

2 years ago

Tell whether the sequence 12, 4, -4, -12, -20, ... is arithmetic

Shkiper50 [21]

Answer:

yes, it is arithmetic as the common difference is -8

8 0

3 years ago

Read 2 more answers

PLEASE HELP I ONLY HAVE 12 MINUTES!! The pendulum of the grandfather clock shown below swings at a maximum angle of 25 degrees.

Vaselesa [24]

Answer: T = 2π√(I/mgD)

Step-by-step explanation:

where:

m is the mass of the pendulum;

I is the moment of inertia of the mass; and

D is the distance from the center of mass to the point of suspension.

Determine the length of the pendulum. For example, it can be equal to 2 m.

Decide a value for the acceleration of gravity. We will use the Earthly figure of 9.80665 m/s², but feel free to check how the pendulum would behave on other planets.

Calculate the period of oscillations according to the formula above: T = 2π√(L/g) = 2π * √(2/9.80665) = 2.837 s.

Find the frequency as the reciprocal of the period: f = 1/T = 0.352 Hz.

You can also let this simple pendulum calculator perform all calculations for you!

7 0

2 years ago

Read 2 more answers

Two number cubes are rolled to determine how a token moves on a game board. The sides of each number cube are numbered 1, 2, 3,

lord [1]

The mathematical expectation of Option A is 4. The mathematical expectation of Option B is 2.75. Option A offers a greater likelihood of advancing to the finish line.

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3 years ago