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3 years ago

Which system of equations has a solutions x=0,y=1?

Mathematics

1 answer:

Vilka [71]3 years ago

6 0

Answer:

y+x=1

y-x=1

Step-by-step explanation:

Well If x is 0, its pretty straight forward.

1+0=1

1-0=1

lol hope this helps

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Please help me with this math question !!

bezimeni [28]

Wow that looks ahrd to solve sorry I can't help

4 0

3 years ago

Which expressions are equivalent to 6y-18h?

lukranit [14]

First you had to rewrite the problem with eighteen as the three times six is equal to eighteen.

$=6y-3*6h$

Then you factor it out by the common term of six.

$=6(y-3h)$

Final answer: $\boxed{6(y-3h)}$

Hope this helps!

And thank you for posting your question at here on brainly, and have a great day.

-Charlie

5 0

3 years ago

Read 2 more answers

Andy's house is on a large lot. he bought 100 yards of chain-link fence on sale. he wants to use all of the material to fence in

andre [41]

Let X = length.. the perimetrrbis thus 2*60+2x=300,ft
2x=180
x=90
60×90ft or 20×30yds

4 0

4 years ago

A company made 1,215 yards of copper wire. They want to wrap the same amount of wire on each three poles. How many yards of wire

o-na [289]

Answer:

405 yards

Step-by-step explanation:

Given that,

A company made 1,215 yards of copper wire.

They want to wrap the same amount of wire on each three poles.

3 poles = 1,215 yards of copper wire

1 pole = 405 yards of copper wire

So, each pole will require 405 yards of copper wire.

6 0

3 years ago

Elderly drivers. In January 2011, The Marist Poll published a report stating that 66% of adults nationally think licensed driver

katrin [286]

Answer:

(a) Hence, the margin of error reported by The Marist Poll was correct.

(b) Based on a 95% confidence interval the poll does not provide convincing evidence that more than 70% of the population think that licensed drivers should be required to retake their road test once they turn 65.

Step-by-step explanation:

We are given that the Marist Poll published a report stating that 66% of adults nationally think licensed drivers should be required to retake their road test once they reach 65 years of age.

It was also reported that interviews were conducted on 1,018 American adults, and that the margin of error was 3% using a 95% confidence level.

(a) Margin of error formula is given by;

Margin of Error = $Z_(_\frac{\alpha}{2}_) \times \sqrt{\frac{\hat p(1-\hat p)}{n} }$

where, $\alpha$ = level of significance = 1 - 0.95 = 0.05 or 5%

Standard of error = $\sqrt{\frac{\hat p(1-\hat p)}{n} }$

Also, $\hat p$ = sample proportion of adults nationally think licensed drivers should be required to retake their road test once they reach 65 years of age = 66%

n = sample of American adults = 1.018

The critical value of z for level of significance of 2.5% is 1.96.

So, Margin of Error = $Z_(_\frac{\alpha}{2}_) \times \sqrt{\frac{\hat p(1-\hat p)}{n} }$

= $1.96 \times \sqrt{\frac{0.66(1-0.66)}{1,018} }$ = 0.03 or 3%

Hence, the margin of error reported by The Marist Poll was correct.

(b) Now, the pivotal quantity for 95% confidence interval for the population proportion who think that licensed drivers should be required to retake their road test once they turn 65 is given by;

P.Q. = $\frac{\hat p-p}{ \sqrt{\frac{\hat p(1-\hat p)}{n} }}$ ~ N(0,1)

So, 95% confidence interval for p = $\hat p \pm \text{Margin of error}$

= $0.66 \pm 0.03$

= [0.66 - 0.03 , 0.66 + 0.03]

= [0.63 , 0.69]

Hence, based on a 95% confidence interval the poll does not provide convincing evidence that more than 70% of the population think that licensed drivers should be required to retake their road test once they turn 65 because the interval does not include the value of 70% or more.

7 0

4 years ago