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4 years ago

8

john purchased an old scooter for $32000 and spent $5500 on its repairs. then he sold it to his friend for $33850. how much perc

ent is his gain or loss?

1 answer:

Paladinen [302]4 years ago

6 0

$3,650, because $32,000+$5500=$37,500 Then you do $37,500 minus $33,850=$3,650

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What does the pair of equations y = 5, z = 6 represent? In other words, describe the set of points (x, y, z) such that y = 5 and

stiks02 [169]

Answer:

Option b.

Step-by-step explanation:

The set of points (x, y, z) such that y = 5 and z = 6.

So, all pairs are in the form of (x,5,6).

where, x can be any real number.

It the set of points (x,y,6), y and z-coordinates are constant.

So, the pair of equations y = 5, z = 6 represents a line parallel to x-axis and the distance of this line from xy-plane is 6 units and from xz plane is 5 units.

Therefore, the correct option is b.

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3 years ago

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3 years ago

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Which equation is equivalent to StartRoot x EndRoot + 11 = 15?

Lerok [7]

The equivalent expression of $\sqrt x + 11 = 15$ is $\sqrt x = 15 - 11$

<h3>How to determine the equivalent expression?</h3>

The complete question is in the attached image

The expression is given as:

$\sqrt x + 11 = 15$

Subtract 11 from both sides of the equation

$\sqrt x + 11 - 11= 15 - 11$

This gives

$\sqrt x = 15 - 11$

Hence, the equivalent expression of $\sqrt x + 11 = 15$ is $\sqrt x = 15 - 11$

Read more about equivalent expression at:

brainly.com/question/4344214

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2 years ago

A city is holding a referendum on increasing property taxes to pay for a new high school. In a survey of 458 likely voters, 254

Phantasy [73]

Answer:

$\hat p \pm Z*\sqrt{\frac{\hat p\times(1-\hat p)}{n} }$

$=0.5546\pm1.96*\sqrt{\frac{0.5546\times(1-0.5546)}{458} }$

$=0.5546\pm1.96*\sqrt{\frac{0.5546\times(0.4454)}{458} }$

$=0.5546\pm1.96*\sqrt{\frac{0.2470}{458} }$

$=0.5546\pm1.96*\sqrt{0.00053934}$

$=(0.5091,0.6001)$

Lower limit for confidence interval=0.5091

Upper limit for confidence interval=0.6001

Step-by-step explanation:

We have given,

x=254

n=458

Estimate for sample proportion= $\bar p = 0.5546$

Level of significance is =1-0.95=0.05

Z critical value(using Z table)=1.96

Confidence interval formula is

$\hat p \pm Z*\sqrt{\frac{\hat p\times(1-\hat p)}{n} }$

$=0.5546\pm1.96*\sqrt{\frac{0.5546\times(1-0.5546)}{458} }$

$=0.5546\pm1.96*\sqrt{\frac{0.5546\times(0.4454)}{458} }$

$=0.5546\pm1.96*\sqrt{\frac{0.2470}{458} }$

$=0.5546\pm1.96*\sqrt{0.00053934}$

$=(0.5091,0.6001)$

Lower limit for confidence interval=0.5091

Upper limit for confidence interval=0.6001

8 0

3 years ago