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3 years ago

Explain why it is recommended that you combine like terms first when solving equations.

2 answers:

8 0

You would get different answers if you didn't follow the rule of PEMDAS, or the order of operations: Parentheses, Exponents, Multiply, Divide, Add, and Subtract, in that order.

8090 [49]3 years ago

6 0

It makes it easier and les likely to make mistkae

would you rather do

3(x+4-2+2x) or
3(3x+2)

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Area for rectangle in the coordinate plane. IXL Geometry help pls !

Sidana [21]

Answer:

Step-by-step explanation:

The co-ordinates of the rectangle are:

A (8, 6)

B (-4, -10)

C (-8, -7)

D (4, 9)

The Area of Rectangle is Given by: length x breadth = AB x BC

Lengths of AB and BC can be found by distance formula

length(AB) = $\sqrt{(x_{2} - x_{1} )^{2} + (y_{2} - y_{1} )^{2}}$ = $\sqrt{(-4-8)^{2} + (-10-6)^{2}} = 20$

Similarly,

length(BC) = 5

Area of Rectangle = AB x BC = 20 x 5 = 100 square units

5 0

3 years ago

5,499,785- 5,040,629 plz help

almond37 [142]

459,156 is the answer

5 0

3 years ago

Read 2 more answers

The sum of the digits of a two-digit number is 9. When the digits are reversed, the new number is 9 more than the original numbe

Paul [167]

9514 1404 393

Answer:

d. 45

Step-by-step explanation:

You can check the offered answers. You will find that the difference from reversing the digits will only be 9 if the digits differ by 9/9 = 1.

The original number is 45.

Check

45 + 9 = 54 . . . with the digits reversed

4 0

3 years ago

Find the simple interest rate needed in order for an investment of $2000 to grow to an account of $5000 in 3 years

Nutka1998 [239]

$\bf ~~~~~~ \textit{Simple Interest Earned Amount} \\\\ A=P(1+rt)\qquad \begin{cases} A=\textit{accumulated amount}\dotfill & \$5000\\ P=\textit{original amount deposited}\dotfill&\$2000\\ r=rate\to r\%\to \frac{r}{100}\\ t=years\dotfill &3 \end{cases} \\\\\\ 5000=2000(1+r3)\implies \cfrac{5000}{2000}=1+3r\implies \cfrac{5}{2}=1+3r \\\\\\ 5=2+6r\implies 3=6r\implies \cfrac{3}{6}=r\implies 0.5=r\implies \stackrel{\textit{converting to percent}}{0.5\cdot 100\implies 50\%}$

5 0

3 years ago

forty years ago gasoline cost $0.30 per gallon on average. ten years ago gasoline average about $1.50 per gallon. What is the pe

DiKsa [7]

It is as 5x's as much.
$0.30 X 5 = $1.50
Hope I helped

3 0

3 years ago