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2 years ago

Solve:4x+3y=20;4x+2y=10 by matrix method

Mathematics

1 answer:

laila [671]2 years ago

8 0

Answer:

i don't know sorry . and study well to make your future good

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What is 5x5x5x5 plz tell me

Llana [10]

5 times 5 times 5 times 5 is 20

So just count by 5

Hope this help

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2 years ago

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What is 70/360 in percentage

defon

Answer:

About 19.45%

Step-by-step explanation:

First set the fraction equal to x over 100 ———- (70/360)=(x/100)

cross multiply———- 70 * 100 = 7000 360 * x = 360x

solve for x —————- 7000=360x

7000/360= 19.44444444

Round ——- x=19.45

Divide fraction ———— 70/360 = 0.1944444444

Next, convert to percentage by moving decimal 2 places to the right ——

019.44444444

Round ————- = 19.45

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2 years ago

If angle 0 is in quadrant I, what is the value of

Brilliant_brown [7]

Answer:

$the \: answer \: is \: c \: = - \frac{ \sqrt{14} }{5}$

Step-by-step explanation:

$\sin^{2}0 + ( \frac{ \sqrt{11} }{5} ) ^{2} = 1( \sin^{2}0 + \cos^{2} 0 = 1)$

${ \sin }^{2}0 + \frac{11}{25} = 1 \\ { \sin }^{2}0 = \frac{14}{25}$

$\sin0_{1} = - \frac{ \sqrt{14}}{5} while \sin0_{2} = \frac{ \sqrt{14} }{5}$

Therfore theta is QI
Therfore sin theta >0
$therefore \: \sin0 = \frac{ \sqrt{14} }{5}$

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1 year ago

Explain the steps necessary for solving the following equation. x^2-8x-20=0

kirza4 [7]

First factor the equation
(x-10)(x+2) = 0
Then solve for (x-10) and (x+2)
x=10
x=-2

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2 years ago

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The formula F= 9 5 ( C)+32 converts a temperature reading from Celsius into Fahrenheit. What does 20° C convert to in terms of d

Helga [31]

Answer:

F = 9 / 5 * 20 + 32 = 9 * 4 + 32 = 68 deg F

Step-by-step explanation:

8 0

2 years ago

Solve:4x+3y=20;4x+2y=10 by matrix method​

Solve:4x+3y=20;4x+2y=10 by matrix method