All categories

3 years ago

Which is the best first step in solving the following system of equations y=7x+3 y=9x

Mathematics

2 answers:

Vanyuwa [196]3 years ago

8 0

Answer:

13.5 and 1.5

Step-by-step explanation:

y=7x+3

y=9x

9x=7x+3

2x=3

x=3/2

y=9(3/2)

y=13.5

Fed [463]3 years ago

3 0

Answer:

Replace the y value in y=7x+3 with 9x

Answer: x=3/2

Step-by-step explanation:

y=7x+3; y=9x

9x=7x+3

Subtract 7x from both sides

2x=3

Divide by 2 on both sides

x=3/2

You might be interested in

Kevin’s grandfather left him 100 shares of Apple Inc. and 40 shares of Ford Motor Company. How much is his stock worth, assuming

umka2103 [35]

Answer:

Step-by-step explanation:

From the problem statement, we can create the following equation:

$T = 100A + 40F$

Where $T$ is the total worth of all shares, $A$ is the price of an Apple share, and $F$ is the price of a Ford share.

Plugging in the numbers from the problem statement, we get the following:

$T = 100(536) + 40(9.85)$

Multiplying these numbers out and adding them together will give you your answer.

3 0

3 years ago

2 (Picture) CONVERGENT AND DIVERGENT SERIES PLEASE HELP!!

Ivanshal [37]

Answer:

This series is divergent

Step-by-step explanation:

we are given a series

Firstly, we will find nth term

Numerator:

3, 4, 5,...

so, nth term will be

$a_n=n+3$

Denominator:

4,5,6,....

so, nth term will be

$b_n=n+4$

so, we can find it's nth term as

$c_n=\frac{n+3}{n+4}$

we can use divergent test

$\lim_{n \to \infty} c_n=\lim_{n \to \infty} \frac{n+3}{n+4}$

we can divide top and bottom by n

$\lim_{n \to \infty} c_n= \lim_{n \to \infty} \frac{n/n+3/n}{n/n+4/n}$

$\lim_{n \to \infty} c_n= \lim_{n \to \infty} \frac{1+3/n}{1+4/n}$

now, we can plug n=inf

$\lim_{n \to \infty} c_n= \frac{1+0}{1+0}$

$\lim_{n \to \infty} c_n=1$

Since, it is non-zero value

so, this series is divergent

8 0

3 years ago

In the present formula what does i stand for?

timurjin [86]

answer:

Present value (PV) is an accounting term meaning the value today of some amount of money expected to be available one or more years in the future. ... In this formula, PV stands for present value, namely right now, in the year of analysis.

3 0

3 years ago

The area of<br>of a rectangle is (14x^4 + 7x^2) cm²<br>and its breadth is 7x^2 cm. Find its length.

NeTakaya

Answer:

2x^1+1

Step-by-step explanation:

Area=L X W

which means that (14x^4+7x^2) needs to be divided by 7x^2

factorise(14x^4+7x^2) which gives 7x(2x^2+1)

divide 7x(2x^2+1) by 7x^2

gives 2x^2 +1

7 0

2 years ago

Read 2 more answers

Find the sum or product of 5×23×2 using properties

soldi70 [24.7K]

I think this is 230 ..

8 0

3 years ago