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2 years ago

Solve this system of linear equations: 4x - 2y = 8

Mathematics

1 answer:

Mrac [35]2 years ago

6 0

Answer:

Step-by-step explanation:

Here you go mate

PEDMAS

Parenthesis

Exponents

Division

Multiplication

Addition

Subtraction

Step 1

4x - 2y = 8 ,y = 3/2x - 2 equation/Question

Step 2

4x-2y=8 Substitute

4x-2( 3 /2 x-2)=8

Step 3

x+4=8 simplify

x=4

Step 4

y= 3 /2 x-2 substitute 4 for x

y= 3 /2 (4)-2

Step 5

y= 3 /2 (4)-2 simplify

y=4

answer

x=4

y=4

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3 years ago

An unknown fraction is between 0 and 1. Which is true about the equivalent percent and decimal?

monitta

Answer:

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3 years ago

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3 years ago

Which matrix is equal to P + Q?

Afina-wow [57]

Answer:
$\begin{bmatrix}-1.1 & 9.5\\-5.7 & 0.8\\6.1 & 0.7\end{bmatrix}$

------------------------------------

Add up the corresponding elements

Row1,Column1: 6.1+(-7.2) = -1.1
Row1,Column2: 1.9+7.6 = 9.5
Row2,Column1: -7.5+1.8 = -5.7
Row2,Column2: 2.2+(-1.4) = 0.8
Row3,Column1: 3.8+2.3 = 6.1
Row3,Column2: -1.4+2.1 = 0.7

So that's why the answer is
$\begin{bmatrix}-1.1 & 9.5\\-5.7 & 0.8\\6.1 & 0.7\end{bmatrix}$

3 0

3 years ago

A culture started with 2000 bacteria. After 4 hours, it grew to 2,200 bacteria. Predict how many bacteria will represent after 9

S_A_V [24]

Y=2000* $e^{k*t}$

2200=2000* $e^{k*4}$

$e^{k}= ( \frac{22}{20} )^{(1/4)}$ 

so,
y at t=8 is 2000*( $( \frac{22}{20} )^{(1/4)}$ )^8
y = 2000(22/20)^2=2000*1.21=2420 thats the answer i hope.

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2 years ago