All categories

2 years ago

Find out x and y. y = 2x。 x = 2y - 9

Mathematics

1 answer:

Elena-2011 [213]2 years ago

5 0

Answer:

x = 3

y = 6

Step-by-step explanation:

y = 2x

x = 2y - 9

=> x = 2(2x) - 9

=> x = 4x - 9

=> 9 = 4x - x

=> 9 = 3x

=> 3x = 9

=> x = 9/3

=> x = 3

y = 2x

=> y = 2(3)

=> y = 6

You might be interested in

3.) Given the graph of the line represented by the equation f(x) = -3x + b,

dsp73

Answer: (4)

Step-by-step explanation:

4 0

3 years ago

Two third of a number is 30. find the number

liraira [26]

Answer:

The number is 45

Step-by-step explanation:

Let number = x

2/3 x = 30

x = 30/2/3

x = 30×3/2

x = 90/2 = 45

The number is 45

2/3 ×45= 90/3 = 30

7 0

3 years ago

Misha deposited $3,725 into a savings account 22 years ago. The account has an interest rate of 2.2% and the balance is currentl

Annette [7]

The compounding equation is $A=P(1+ \frac{r}{n}) ^{nt}$ . So

$6012.37 = 3725(1+ \frac{0.022}{n}) ^{22n}$     Divide by 3725

$1.6141= (1+ \frac{0.022}{n}) ^{22n}$

Daily    = $(1+ \frac{0.022}{365}) ^{22*365}$
              = $(1.000060274) ^{8030}$
              = 1.6225
Monthly = $(1+ \frac{0.022}{12}) ^{22*12}$
              = $(1.0018333) ^{264}$
              = 1.6218
Quarter = $(1+ \frac{0.022}{4}) ^{22*4}$
              = $(1.0055) ^{88}$
              = 1.6204
Yearly = $(1+ \frac{0.022}{1}) ^{22*1}$
              = $(1.022) ^{22}$
              = 1.6141

The answer is yearly.

5 0

3 years ago

What is the answer to this ? <br><br> 1.39×2

wariber [46]

Answer:

The answer is 2.78

Step-by-step explanation:

6 0

3 years ago

What is the answer to this

Alex_Xolod [135]

umm I don't know hehe oops

8 0

3 years ago

Read 2 more answers

Find out x and y. y = 2x。 x = 2y - 9​

Find out x and y. y = 2x。 x = 2y - 9