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3 years ago

Please help me :( i would appreciate it

Mathematics

2 answers:

sleet_krkn [62]3 years ago

5 0

Answer:

Step-by-step explanation:

Nataly [62]3 years ago

3 0

The answer is B because you can see that in the Town A, the median for the temperatures is closer to the 15 than it is to the 30. This offset, having the beginning half be smaller than the ending half, creates a negative skew. On the other hand, town B had both sides equal, with the median in the middle. This means the distribution for Town B is symmetric.

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AB is a line of symmetry of this arrow shape. A)Calculate The Perimeter of the shape.

maw [93]

Answer:

A)58cm

B) $h=4\sqrt{5}cm$

C)125.55square cm

Step-by-step explanation:

AB is a line is symmetry

Total length of left half part=12cm+9cm+3cm+5cm

Total length of left half part=29 cm

Length of left half part=Length of right half part

Therefore, length of right half part=29 cm

A) Perimeter of the shape=29cm+29cm=58cm

Pythagoras theorem

$(Hypotenuse)^2=(Base)^2+(Perpendicular\;side)^2$

Hypotenuse=12 cm

Base=5+3=8cm

In triangle ADC

Now, using Pythagoras theorem

$(12)^2=8^2+h^2$

$144=64+h^2$

$h^2=144-64=80$

$h=\sqrt{80}=4\sqrt{5}cm$

Area of shape=Area of triangle+ area of rectangle

Area of shape= $\frac{1}{2}\times b\times h+l\times b$

Where l=9cm

breadth=3+3=6cm

h= $4\sqt{5}cm$

base=2(5)+3(2)=16cm

Area of shape= $\frac{1}{2}\times\times 16\times 4\sqrt{5}+9\times 6$

Area of shape=125.55 square cm

7 0

3 years ago

About 1/5 of all adults in the United States have type O blood. If four randomly selected adults donate blood, find the probabil

OlgaM077 [116]

Answer:

We know that:

1/5 = 0.2 of all adults in US have type O blood.

Then: 4/5 = 0.8 of all adults in US do not have type O blood.

a) All four are type O.

Let's think this, as four events with two possible outcomes, having type O blood, with a probability of 0.2, and not having type O blood with a probability of 0.8

Now if we want the four people to have type O blood, then we have the outcome with probability 0.2 four times, and as we know, the joint probability is equal to the product of the individual probabilities:

P =0.2^4 = 0.0016

b) None of them is type O.

Similar to the above case, but this time we work with four times the probability 0.8

P = 0.8^4 = 04096

c) Two of the four are type O.

Here we will have two times the probability 0.2, and two times the probability 0.8.

p = 0.2^2*0.8^2

But, if the people is ordered, the two persons with type O blood can be:

first and second

first and third

first and fourth.

second and third

second and fourth

third and fourth.

6 different combinations, then the actual probability for this case will be:

P = 6*p = 6*(0.2^2*0.8^2) = 0.1536

8 0

3 years ago

Awnser ASAP 10 points

timofeeve [1]

Answer:

Step-by-step explanation:

Equation=-6x+3

-6(-5)+3=33

-6(-1)+3=0

-6(0)+3=3

-6(1)+3=-3

x y

-5 33

-1 0

0 3

1 -3

8 0

3 years ago

Please help!!! A. 21890/990 B.21539/9990 C.215605/1010 D. 215605/1000

ollegr [7]

Answer:

The answer I got was D 215605/1000

5 0

4 years ago

PLEASE HELP ME I'LL MARK YOU BRAINLIEST IF YOU ANSWER THESE CORRECTLY Find the missing value

Gala2k [10]

Answer:

8. 51

9. 89

10. 20

11. 35

Step-by-step explanation:

sum of the internal angles in a triangle must always total 180 degrees

trick: be careful, sometimes they give you the internal angle, sometimes the external angle

8 0

3 years ago

Read 2 more answers

Please help me :( i would appreciate it ​

Please help me :( i would appreciate it