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3 years ago

Helppp solve the equation algebraically

Mathematics

1 answer:

katen-ka-za [31]3 years ago

4 0

Answer:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:

( 3 , − 1 )

Equation Form:

x = 3 , y = − 1

Step-by-step explanation:

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Beatrice made 7 2/3 cups of lemonade for her lemonade stand. Later, she made 10 3/5 more cups of lemonade. How many cups of lemo

mojhsa [17]

You need to do cross multiplication

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3 years ago

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2. Find the compound interest on Rs.25, 000 after 2 years compounded

Allushta [10]

Answer:25,000 in 2 years at annual compound interest, if the rates for the successive years be 4% and 5% per annum respectively is: (1) Rs. 30,000 (2) Rs. 26,800 fa) Rs.

A=P[1+

100

]

⇒ A=Rs.25,000×(

100

106

)

⇒ 25,000×

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⇒ CI=A−P

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6 0

3 years ago

would set a new school record? A number line going from 515 to 521. An open circle is at 518. Everything to the left of the circ

Rudik [331]

Answer:

Step-by-step explanation:

6 0

3 years ago

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Rearrange the fractions in order from least to greatest. Show your work

Verdich [7]

Answer:

Sorry but, I can't help you with all of them. Here is a and how would you show your work?

-3/4, -1/3, 1/2, 2/3

Step-by-step explanation:

8 0

3 years ago

What is the perimeter of the trapezoid with vertices Q(8, 8), R(14, 16), S(20, 16), and T(22, 8)? Round to the nearest hundredth

EleoNora [17]

Check the picture below.

so... you can pretty much see how long RS and QT are, you can just count the units off the grid.

now, let's find QR's length

$\bf ~~~~~~~~~~~~\textit{distance between 2 points}\\\\
\begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
% (a,b)
&Q&(~ 8 &,& 8~) 
% (c,d)
&R&(~ 14 &,& 16~)
\end{array}~~ 
% distance value
d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2}
\\\\\\
QR=\sqrt{(14-8)^2+(16-8)^2}\implies QR=\sqrt{6^2+8^2}
\\\\\\
QR=\sqrt{36+64}\implies QR=\sqrt{100}\implies QR=10$

and let's also find the length for ST

$\bf ~~~~~~~~~~~~\textit{distance between 2 points}\\\\
\begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
% (a,b)
&S&(~ 20 &,& 16~) 
% (c,d)
&T&(~ 22 &,& 8~)
\end{array}~ 
d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2}
\\\\\\
ST=\sqrt{(22-20)^2+(8-16)^2}\implies ST=\sqrt{2^2+(-8)^2}
\\\\\\
ST=\sqrt{4+64}\implies ST=\sqrt{68}\implies ST=\sqrt{4\cdot 17}
\\\\\\
ST=\sqrt{2^2\cdot 17}\implies ST=2\sqrt{17}$

so, add the lengths of all sides, and that's the perimeter of the trapezoid.

8 0

4 years ago

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