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3 years ago

An equivalent expression for n x a using only addition

Mathematics

2 answers:

Rina8888 [55]3 years ago

6 0

<u /><u /><u /> $n\times a\quad =\quad (a+a+a+a+a+.....+a)$

Bogdan [553]3 years ago

5 0

n x a = $a _{1} + a _{2} + a _{3} + ... + a _{n}$

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Please help me explain as well. AD is 48. I will give brainliest.

otez555 [7]

Answer:

The area of the rectangle is 48

Step-by-step explanation:

We know that AE is 6 and ED is 8, since it forms a triangle, use the Pythagorean theorem to find AD, which is one side of the rectangle.

The Pythagorean theorem says that a^2 + b^2 = c^2.

a is AE, b is ED, and c is AD, so 6^2 + 8^2 = c^2, 36 + 64 = c^2, 100 = c^2, 10 = c, so AD is 10

The area of the triangle is half of AE times ED, so 1/2(6)(8) = 1/2(48) = 24, the area of the triangle is 24.

Since the area of a triangle is 1/2 of the base times the height, we can figure out the height:

A = 1/2bh, 24 = 1/2(10)h, 24 = 5h, 4.8 = h, so the height of the triangle (and rectangle) is 4.8.

The height of the triangle is also the height of the rectangle:

The area of the rectangle is 4.8*10 = 48

8 0

3 years ago

Write this second order differential equation as a first order matrix-vector system of differential equations. Show your work in

Mkey [24]

Answer:

See explaination

Step-by-step explanation:

To convert a second-order differential equation into a system of linear differential equation, we have to write y'' as x', for some variable x.

please kindly see attachment for the step by step solution of the given problem.

4 0

3 years ago

HELP ME PLEASE !!!!!!!!

lord [1]

Answer:

B and D

Step-by-step explanation:

A is false as it would be 3.08 when rounded.

C is false as it is rounded to the tenth not hundredth.

5 0

3 years ago

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Ryan bought 3 books and a magazine . He paid $30 and relieved $5 change if the magazine cost twice as much as each book, find th

Montano1993 [528]

The books are $5, and the magazines are $10. I’m not sure which way you want it explained but since magazines are twice the price of books, you can solve the equation 3b + 2b = 25. This gives you b=5 which you just multiply by 2 giving you the price of a magazine.

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3 years ago

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Brenda records 76 songs on 4 albums write as a rate

Ad libitum [116K]

19 songs per album
djdjdjd djdjdjd jdjdjdjdkdkdkdkdkdkdjxndmdmdjddjjdjddjdjdjdjdjfj or 19/1

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3 years ago