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3 years ago

Write the augmented matrix for the following system of equations. y + 2x = 0 -3x + 2y = -2

Mathematics

1 answer:

beks73 [17]3 years ago

5 0

Answer:

sorry never seen this

Step-by-step explanation:

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Please show me this but solved on paper?

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2 years ago

Read 2 more answers

Find all the zeroes of the equation(with simple steps).

uysha [10]

Answer-

The zeros are, $5,\ -5,\ 4i,\ -4i$

Solution-

$\Rightarrow -3x^4+27x^2+1200=0$

$\Rightarrow -3(x^2)^2+27(x^2)+1200=0$

Here,

a = -3, b = 27, c = 1200

So,

$x^2=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}$

$=\dfrac{-27\pm \sqrt{-27^2-4\cdot (-3)\cdot 1200}}{2\cdot (-3)}$

$=\dfrac{-27\pm \sqrt{729+14400}}{-6}$

$=\dfrac{-27\pm 123}{-6}$

$=\dfrac{-27+123}{-6},\ \dfrac{-27- 123}{-6}$

$=\dfrac{96}{-6},\ \dfrac{-150}{-6}$

$=-16,\ 25$

So,

$\Rightarrow x^2=25,\ -16$

$\Rightarrow x=\sqrt{25},\ \sqrt{-16}$

$\Rightarrow x=5,\ -5,\ 4i,\ -4i$

8 0

3 years ago

(3, -2), y=x + 4 i need help to find the parallel equation. please explain how you got the answer so i know how to solve.

GarryVolchara [31]

I hope this helps you

3 0

3 years ago

A bus driver drives a bus 72 miles. the bus uses 6 gallons of gas to make the trip. how many miles can the bus travel with just

pentagon [3]

Do 72 divided by 6 to get 12 so the answer is D

6 0

3 years ago

A city is holding a referendum on increasing property taxes to pay for a new high school. In a survey of 434 likely voters, 202

EleoNora [17]

Answer: 0.418 < p < 0.512

Step-by-step explanation: A 95% conifdence interval for a population proportion is given by:

$p + z\sqrt{\frac{p(1-p)}{n} }$

where:

p is the proportion

z is score in z-table

n is sample size

The proportion for people who said "yes" is

$p=\frac{202}{434}$ = 0.465

For a 95% confidence interval, z = 1.96.

Calculating

$0.465 + 1.96*\sqrt{\frac{0.465(0.535)}{434} }$

$0.465 + 1.96*\sqrt{0.00057}$

0.465 ± 1.96*0.024

0.465 ± 0.047

Interval is between:

0.465 - 0.047 = 0.418

0.465 + 0.047 = 0.512

The interval with 95% of confidence is between 0.418 and 0.512.

4 0

3 years ago