3 years ago

Solve the system of equations using a matrix. x + 5y = 14 4x-y = 35

Mathematics

1 answer:

marshall27 [118]3 years ago

4 0

Answer: x = 14 - 5y
y = 14/5 - x/5( if you solve for y )

2nd one x = 35/4 + y/4
y = -35 +4x ( solve for y )

You might be interested in

Find the area of the figure

statuscvo [17]

I just looked it up and it said it is 180

3 0

3 years ago

A soccer player ran 180.48 miles in 70.5 days to stay fit. How many miles will he run in 9 days

cluponka [151]

Answer:

23.04 miles

Step-by-step explanation:

4 0

3 years ago

Get the product using FOIL method: (x+2)(x+3)

emmasim [6.3K]

Answer:

x² + 5x + 6

Step-by-step explanation:

Foil means first, outside, inside, last

First: (x+2)(x+3)

x × x = x²

Inside: (x+2)(x+3)

x × 3 = 3x

Ouside: (x+2)(x+3)

2 × x = 2x

Last: (x+2)(x+3)

2 × 3 = 6

adding them together:

x² + 3x + 2x + 6 = x² + 5x + 6

8 0

2 years ago

Alex got 27 questions out of 30 correct. what present of the questions did he get correct?(use fish method)

Novosadov [1.4K]

if we take 30 to be the 100%, what is 27 off of it in percentage?

$\begin{array}{ccll} amount&\%\\ \cline{1-2} 30 & 100\\ 27& x \end{array} \implies \cfrac{30}{27}=\cfrac{100}{x} \\\\\\ \cfrac{10}{9}=\cfrac{100}{x}\implies 10x=900\implies x=\cfrac{900}{10}\implies x=90$

4 0

2 years ago

Independent Practice

Sedbober [7]

Answer: THE ANSWER IS D. (-27, -7, -2, 8, 48)

Step-by-step explanation:

Graph.

y = 5 x − 2

{ − 5 , − 1 , 0 , 2 , 10 }

The chosen topic is not meant for use with this type of problem. Try the examples below.

1 , 2 , 2 , 2 , 3 , 4 , 4 , 5 , 8 , 9 , 10

11 , 14 , 14 , 17 , 17 , 17 , 41 , 44 , 47 , 71 , 74 , 77

12 , 15 , 45 , 65 , 78

5 0

3 years ago