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harkovskaia [24]

2 years ago

15

A city lot is 20 meters wide. It is 2 times as long as it is wide. How long is the city lot? Express your answer in simplest for

m.A city lot is 20 meters wide. It is 2 times as long as it is wide. How long is the city lot? Express your answer in simplest form.

1 answer:

r-ruslan [8.4K]2 years ago

5 0

Possibly 40 meters long? Because 20x2=40

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What is the estimate of 206,834 and 194,268

Lena [83]

Answer:I can help you round 206834 and 194268 to its nearest thousands place. 207000 would be the estimate for the first number and 194000 would be the estimate for the second number.

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3 years ago

When the sum of 1.9 and 2.2 is subtracted from the product of 1.9 and 2.2, what is the difference?

Nitella [24]

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3 years ago

Jennifer earned $1000 babysitting over the summer. She spent $250 of her earnings on new clothes. What percent of her earnings d

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Answer:

25%

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she spent $250

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4 0

2 years ago

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A student is given that point P(a, b) lies on the terminal ray of angle Theta, which is between StartFraction 3 pi Over 2 EndFra

Harman [31]

Answer:

<em>A.</em>

<em>The student made an error in step 3 because a is positive in Quadrant IV; therefore, </em>

<em /> $cos\theta = \frac{a\sqrt{a^2 + b^2}}{a^2 + b^2}$

Step-by-step explanation:

Given

$P\ (a,b)$

$r = \± \sqrt{(a)^2 + (b)^2}$

$cos\theta = \frac{-a}{\sqrt{a^2 + b^2}} = -\frac{\sqrt{a^2 + b^2}}{a^2 + b^2}$

Required

Where and which error did the student make

Given that the angle is in the 4th quadrant;

The value of r is positive, a is positive but b is negative;

Hence;

$r = \sqrt{(a)^2 + (b)^2}$

Since a belongs to the x axis and b belongs to the y axis;

$cos\theta$ is calculated as thus

$cos\theta = \frac{a}{r}$

Substitute $r = \sqrt{(a)^2 + (b)^2}$

$cos\theta = \frac{a}{\sqrt{(a)^2 + (b)^2}}$

$cos\theta = \frac{a}{\sqrt{a^2 + b^2}}$

Rationalize the denominator

$cos\theta = \frac{a}{\sqrt{a^2 + b^2}} * \frac{\sqrt{a^2 + b^2}}{\sqrt{a^2 + b^2}}$

$cos\theta = \frac{a\sqrt{a^2 + b^2}}{a^2 + b^2}$

So, from the list of given options;

<em>The student's mistake is that a is positive in quadrant iv and his error is in step 3</em>

3 0

2 years ago

$5.48 round to nearest hundredth

kifflom [539]

Answer:

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Step-by-step explanation:

5.48

5= the ones place

4= the tenths place

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6 0

3 years ago

Read 2 more answers