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Bad White [126]

2 years ago

12

At a middle school, 95 students have freckles. There are 382 students in the school. To the nearest tenth of a percent, what per

cent of the students have freckles?

1 answer:

Novay_Z [31]2 years ago

5 0

Answer:

D. 24.9

Step-by-step explanation:

95/382 converted to a percentage is 24.9

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Can 6,6,12 make a triangle

BARSIC [14]

Very technically, yes. But . . .

-- Its angles would be 0°, 0°, and 180° .

-- Its height and area would both be zero.

-- It would look like a line segment, because the two ' 6 ' legs
would have to be wide open in a straight line, and they would
lie right on top of the ' 12 ' leg ... that's the only way they could
reach between the ends of it.

5 0

2 years ago

Read 2 more answers

Mercury metal is poured into a graduated cylinder that holds exactly 22 the mercury used to fill the cylinder weighs 308 from th

gogolik [260]

Answer:

Answer: Mercury metal is poured into a graduated cylinder that holds exactly 22.5 mL. The mercury used to fill the cylinder weighs 306.0 g

Step-by-step explanation:

7 0

2 years ago

The weights of steers in a herd are distributed normally. The variance is 10,000 and the mean steer weight is 1400lbs. Find the

saw5 [17]

Answer:

$P(1539$

And we can find this probability using the normal standard table with this difference:

$P(1.39$

Step-by-step explanation:

Let X the random variable that represent the weights of a population, and for this case we know the distribution for X is given by:

$X \sim N(1539,1580)$

Where $\mu=1400$ and $\sigma=\sqrt{10000}= 100$

We are interested on this probability

$P(1539$

And we can solve the problem using the z score formula given by:

$z=\frac{x-\mu}{\sigma}$

Using this formula we got:

$P(1539$

And we can find this probability using the normal standard table with this difference:

$P(1.39$

5 0

2 years ago

What is the perimeter of angle DEF to the nearest tenth of a unit?<br> helppppp<br> tysm

hammer [34]

<h3>Answer: 36.4 units (choice A)</h3>

===========================================================

Explanation:

Let's use the distance formula to find the distance from D to E

$D = (x_1,y_1) = (-7,2) \text{ and } E = (x_2, y_2) = (3,4)\\\\d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}\\\\d = \sqrt{(-7-3)^2 + (2-4)^2}\\\\d = \sqrt{(-10)^2 + (-2)^2}\\\\d = \sqrt{100 + 4}\\\\d = \sqrt{104}\\\\d = \sqrt{4*26}\\\\d = \sqrt{4}*\sqrt{26}\\\\d = 2\sqrt{26}\\\\d \approx 10.198\\\\$

Note: uppercase D refers to the point, while lowercase d is the distance from D to E.

The length of segment DE is roughly 10.198 units long.

----------------

Repeat for the distance from E to F.

$E = (x_1,y_1) = (3,4) \text{ and } F = (x_2, y_2) = (5,-7)\\\\d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}\\\\d = \sqrt{(3-5)^2 + (4-(-7))^2}\\\\d = \sqrt{(3-5)^2 + (4+7)^2}\\\\d = \sqrt{(-2)^2 + (11)^2}\\\\d = \sqrt{4 + 121}\\\\d = \sqrt{125}\\\\d = \sqrt{25*5}\\\\d = \sqrt{25}*\sqrt{5}\\\\d = 5\sqrt{5}\\\\d \approx 11.1803\\\\$

Segment EF is roughly 11.1803 units long.

----------------

Repeat for the distance from F to D.

$F = (x_1,y_1) = (5,-7) \text{ and } D = (x_2, y_2) = (-7,2)\\\\d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}\\\\d = \sqrt{(5-(-7))^2 + (-7-2)^2}\\\\d = \sqrt{(5+7)^2 + (-7-2)^2}\\\\d = \sqrt{(12)^2 + (-9)^2}\\\\d = \sqrt{144 + 81}\\\\d = \sqrt{225}\\\\d = 15\\\\$

Unlike the others, this result is exact.

----------------

Add up the three segment lengths to get the perimeter

DE + EF + FD

10.198 + 11.1803 + 15

36.3783

The perimeter is approximately 36.3783 units which rounds to <u>36.4</u>

The answer has been confirmed with GeoGebra.

4 0

1 year ago

Find An Bif A = {3, 6, 9, 12) and B = {2, 4, 6, 8, 10).

viva [34]

Answer:

The set A ∩ B contain {6, 12}

Step-by-step explanation:

Given : set A = {3, 6, 9, 12} and set B = {2, 4, 6, 8, 10, 12}

We have to find A ∩ B

Consider the given sets

Set A = {3, 6, 9, 12}

and set B = {2, 4, 6, 8, 10, 12}

Since, A ∩ B includes those elements that are both in set A and set B.

Thus, the common elements of A and B are 6 and 12

So , the set A ∩ B contain {6, 12}

4 0

2 years ago