✨PLEASE HELP ASAP!!!✨ What is the solution to the system of equations?

Mathematics

2 answers:

Anastasy [175]2 years ago

7 0

Answer:

x = 4

y = - 2

Step-by-step explanation:

3x + 8y = - 4

2x - 4y = 16 Multiply the second equation by 2 and add it to the 1st

3x + 8y = - 4

4x - 8y = 32 Add

7x = 28 Divide by 7

7x/7 = 28/7

x = 4

2x - 4y = 16 Substitute 4 for x

2*4 - 4y = 16 Combine

8 - 4y = 16 Subtract 8 from both sides

-4y = 16 - 8

-4y = 8 Divide by -4

y = 8/-4

y = - 2

vazorg [7]2 years ago

4 0

Answer:

x=4, y=-2

Step-by-step explanation:

You might be interested in

3.6.PS-8 If the simple interest on $5,000 for 9 years is $2,700, then what is the interest rate? The rate is %. .

Arada [10]

$~~~~~~ \textit{Simple Interest Earned}\\\\I = Prt\qquad\begin{cases}I=\textit{interest earned}\dotfill &\$2700\\P=\textit{original amount deposited}\dotfill & \$5000\\r=rate\to r\%\to \frac{r}{100}\dotfill &0.0r\\t=years\dotfill &9\end{cases}\\\\\\2700=(5000)(0.0r)(9)\implies 2700=45000(0.0r)\implies \cfrac{2700}{45000}=0.0r\\\\\\\cfrac{3}{50} = 0.0r\implies \cfrac{3}{50} = \cfrac{r}{100}\implies \cfrac{3\cdot 100}{50}=r\implies 6 = \stackrel{\%}{r}$

5 0

2 years ago

Find the area of this figure.

umka2103 [35]

Rectangle

l = 7.2 - 1.7 = 5.5 ft b = 3.4 ft

Semicircle

r = 1.7 ft

Shaded region = area of rectangle + area of semicircle

= l x b + πr²/2

= 5.5 x 3.4 + 3.14 x 1.7 x 1.7 x 1/2

= 18.7 + 4.5373

= 23.2373 ft²

6 0

3 years ago

Evaluate the expression when g=3 and h= 39. h-69 L B. X6 ?

lawyer [7]

Answer:
39-18 is 21.
Explanation:

3 0

2 years ago

15 points please help :")

Liono4ka [1.6K]

Answer:

15*C

Step-by-step explanation: