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3 years ago

What is the least common multiple of 15a² and 3a2? 1.3a2 2.3a3 3.15a2 4.15a3

Mathematics

1 answer:

AveGali [126]3 years ago

5 0

Answer:

1. 3a2

Step-by-step explanation:

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3 years ago

Read 2 more answers

What is the first step to solve the following system of equations using substitution?

Akimi4 [234]

Answer:

Step 1: Solve one of the equations for one of the variables. Let's solve the first equation for x

Thus, option A) is true.

The solution to the system of equations be:

$x = 4, y = 5$

Step-by-step explanation:

It is important to remember that when we solve the system of equations, the first step we need to do is to solve one of the equations for one of the variables.

Given the system of equations

$x - y = -1$

$2x - y = 3$

Step 1: Solve one of the equations for one of the variables. Let's solve the first equation for x

$x-y=-1$

Add y to both sides

$x-y+y=-1+y$

$x=-1+y$

Thus, option A) is true.

NOW LET US SOLVE THE REMAINING PORTION

$\mathrm{Subsititute\:}x=-1+y$ to solve for y

$\begin{bmatrix}2\left(-1+y\right)-y=3\end{bmatrix}$

$-2+y=3$

$y=5$

For x = -1 + y

substitute y = 5

$x=-1+5$

$x=4$

Thus, the solution to the system of equations be:

$x = 4, y = 5$

3 0

3 years ago

CDs are $15.25 each how much will it cost to buy 3

Sonja [21]

Question

CDs are $15.25 each how much will it cost to buy 3

Answer:

Step-by-step explanation:

1 CD = $ 15.25

multiply the unit price by 3

15.25 * 3 = 45.75 $

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4 years ago

You invest $2,000 in an account that is compounded annually at an interest rate of 5%. You never withdraw money from the account

castortr0y [4]

Formula for amount for compound interest:
Amount, A = P(1 + r/100)^n
Where r is rate, P is principal, and n is the number of years.
P = 2000, r = 5, n = t years.
A = 2000( 1 + 5/100)^t
A = 200(1+0.05)^t
A = 2000(1.05)^t
A(t) = 2000(1.05)^t

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3 years ago

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Novay_Z [31]

Answer:

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Step-by-step explanation:

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