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3 years ago

Which cypress ion is equivalent to 4(x+2) ? 6x 4(x)+4(2) 4(x)+4 8x

Mathematics

1 answer:

jenyasd209 [6]3 years ago

5 0

Answer:

4(x) + 4(2)

Step-by-step explanation:

4(x+2) = 4(x) + 4(2)

Distribution property

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A prism and two nets are shown below:

nikdorinn [45]

Part a : Net A because when you fold it up it will look like the wanted prism

Part b : AB = 3 in
BC = 5 in
CD = 7.2 in

Part c : area of one triangle = 4*3 = 12 / 2 = 6
6 * 2 = 12 (because there are 2 triangles)
7.2 * 3 = 21.6
7.2 * 4 = 28.8
7.2 * 5 = 36
Add them all up : 12+21.6+28.8+36 = 98.4
So surface area is 98.4 in

4 0

3 years ago

According to the 2011 National Survey of Fishing, Hunting, and Wildlife-Associated Recreation, there were over 71 million wildif

suter [353]

Answer:

The probability that between 79% and 81%of the 500 sampled wildlife watchers actively observed mammals in 2011 is P=0.412.

Step-by-step explanation:

We know the population proportion π=0.8, according to the 2011 National Survey of Fishing, Hunting, and Wildlife-Associated Recreation.

If we take a sample from this population, and assuming the proportion is correct, it is expected that the sample's proportion to be equal to the population's proportion.

The standard deviation of the sample is equal to:

$\sigma_s=\sqrt{\frac{\pi(1-\pi)}{N}}=\sqrt{\frac{0.8*0.2}{500}}=0.018$

With the mean and the standard deviaion of the sample, we can calculate the z-value for 0.79 and 0.81:

$z=\frac{p-\pi}{\sigma}=\frac{0.79-0.80}{0.018} =\frac{-0.01}{0.018} = -0.55\\\\z=\frac{p-\pi}{\sigma}=\frac{0.81-0.80}{0.018} =\frac{0.01}{0.018} = 0.55$

Then, the probability that between 79% and 81%of the 500 sampled wildlife watchers actively observed mammals in 2011 is:

$P(0.79$

3 0

3 years ago

The data set below has an outlier.

nika2105 [10]

Data set: <span>2, 10, 10, 11, 11, 12, 12, 12, 13, 14, 14
</span>
range: 14 - 2 = 12
median: 12
lower quartile = 10
interquartile range = 4

Data set w/o outlier 2: <span>10, 10, 11, 11, 12, 12, 12, 13, 14, 14

range: 14 - 10 = 4
median: 12
lower quartile: 10.5
interquartile range = 3.5

The value that change the most by removing the outlier is A.) THE RANGE.</span>

4 0

3 years ago

Read 2 more answers

area of rectangular field is 726 sq m if the ratio between its length and breadth is 3:2' find the length and breadth.

ale4655 [162]

Answer:

length = 3x = 3 × 11 = 33 m

breadth = 2x = 2 × 11 = 22 m

Step-by-step explanation:

here's the solution :-

let's take the ratio constants be x

so, length = 3x

breadth = 2x

And, we know that area of rectangle =

length × breadth

So,

=》

$3x \times 2x = 726$

=》

$6 {x}^{2} = 726$

=》

${x}^{2} = \frac{726}{6}$

=》

${x}^{2} = 121$

=》

$x = \sqrt{121}$

=》

$x = 11$

so, length = 3x = 3 × 11 = 33 m

breadth = 2x = 2 × 11 = 22 m

4 0

3 years ago

The sum of two consecutive odd integers is 236 what is the smaller integer

poizon [28]

The correct answer is 117

x + y = 236
y = x + 2
x + x + 2 = 236
2x = 236 - 2
2x = 234
x = 234/2
x = 117

y = 117 + 2
y =119

Both are odd integers and 117 is smaller.

3 0

3 years ago