Ask question

Ask question

All categories

3 years ago

8

3xy - 4y when y =2 and x =5

2 answers:

Dmitry_Shevchenko [17]3 years ago

8 0

Basically plug in 2 where y is and 5 where X is
3(5)(2) - 4(2) , the parentheses are there to multiply
30-8
22

musickatia [10]3 years ago

8 0

Answer:

22

Step-by-step explanation:

You might be interested in

Please help I don’t understand this

morpeh [17]

For the first one yes because you add essentially 1, but three times so you have 3x's whish is 3x. for problem two you get 8xy because of the common base number. number two is no. for number three. no,because you distribute the negative which woukd make negative x minus 8. number problem 4 yes because distrubute the 4 to the x and 5

6 0

3 years ago

Leto [7]

Answer:

Options (B) and (C)

Step-by-step explanation:

Farmland owned by Dwight = 1600 acres

He wants to divide his farmland into four equal parts.

So the area of each part of the land will be = $\frac{\text{Area of the farmland}}{\text{Number of parts of the farmland}}$ = $\frac{1600}{4}$

This expression can be written in different ways,

$\frac{1600}{4}=$ 1600 ÷ 4

$=1600\times \frac{1}{4}$

Therefore, Options (B) and (C) will be the correct options.

4 0

3 years ago

3<br> t: for t=<br> 4<br> 4<br> Your answer

Nataly_w [17]

Answer:<em> If that's 44 then your answer is going to be 132 but if it is just 4 is going to be 12 if it is 4.4 then it's going to be 13.2 </em>

Step-by-step explanation:

44x3=132

4x3=12

4.4x3=13.2

5 0

3 years ago

Suppose you invest $2000 at annual interest rate of 4.5 % How much money do you have in the account after five years?

nataly862011 [7]

Answer:

Please check the explanation.

Step-by-step explanation:

To find the amount we use the formula:

$A=P\cdot \left(1+\frac{r}{n}\right)^{nt}$

Here:

A = total amount

P = principal or amount of money deposited,

r = annual interest rate

n = number of times compounded per year

t = time in years

Given

P=$2000

r=4.5%

n=4

t = 5 years

<em />

<u><em>Calculating compounded quarterly </em></u>

After plugging in the values

$A=2000\left(1+\frac{4.5\%\:}{4}\right)^{4\cdot \:5}$

$A=2000\left(1+\frac{0.045}{4}\right)^{4\cdot \:5}$

$A=2000\cdot \frac{4.045^{20}}{4^{20}}$

$A=\frac{125\cdot \:4.045^{20}}{2^{36}}$

$A = 2,501.50$

Thus, If you deposit $2000 into an account paying 4.5% annual interest compounded quarterly, you will have $2501.50 after five years.

<u><em>Calculating compounded semi-annually</em></u>

n = 2

$A=2000\left(1+\frac{4.5\%\:}{2}\right)^{2\cdot \:5}$

$A=2000\left(1+\frac{0.045}{2}\right)^{2\cdot \:5}$

$A=2000\cdot \frac{2.045^{10}}{2^{10}}$

$A = 2,498.41$

Thus, If you deposit $2000 into an account paying 4.5% annual interest compounded semi-annually, you will have $2,498.41 after five years.

5 0

3 years ago

Which of the following is a good way to quickly determine whether 3⁄12 and ¼ are equal? A. Inverse multiplication B. Reciprocal

fredd [130]

Personally I think the answer would be c. Cross multiplication

5 0

4 years ago

Read 2 more answers