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3 years ago

Need help ASAP !!!!!

Mathematics

1 answer:

kiruha [24]3 years ago

7 0

2,880m because i basically multiplied all the sides by each other to find the area

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a ladder is leaning against a building. the top of the ladder is 21 feet up the wall. the bottom of the ladder is 20 feet away f

Nookie1986 [14]

Answer:

Step-by-step explanation:

We can use the pythagorean theorem to find the length of the ladder

${20}^{2} + {21}^{2} = c {}^{2}$

$400 + 441 = {c}^{2}$

$841 = {c}^{2}$

$c = 29$

The answer is 29

8 0

3 years ago

Read 2 more answers

Please answer all parts as I know the answers but need the work to go with them. Thus, I believe the above answers are correct.

vampirchik [111]

As the sample size n is less than 30 normal distribution is used.

The values of x are converted into z by using the formula z= x-u/ s and then the z values are found out from the table.

The limits are found by using the formula x±σz or x±sz where s= σ

As the sample size is 10 which is less than 30 the normal distribution is used.

The probability of x< 2.59 is 0.3446

The probability 2.60<X <2.63 is 0.9484

So lower and upper limits are 2.607 and 2.612

Part A

As the sample size is 10 which is less than 30 the normal distribution is used.

Part B

For given value of x= 2.59 z is obtained =0.4

x= 2.59

z= x-u/ s

z= 2.59-2.61/0.05

z= -0.02/0.05

z=- 0.4

P (X<2.59) = P(-0.4 <Z<0) = 0.5 -0.1554= 0.3446

The probability of x< 2.59 is 0.3446

Part C

For two given values of x= 2.60 and 2.63 z is obtained as =0.2 and 0.4

x1= 2.60

z1= x-u/ s

z= 2.60-2.61/0.05

z= -0.01/0.05

z=- 0.2

x2= 2.63

z2= x-u/ s

z= 2.63-2.61/0.05

z= 0.02/0.05

z= 0.4

P (2.60<X<2.63) = P(-0.2 <Z<0.4)

= P(-0.2 <Z<0)+ P(0 <Z<0.4)

=0.793 + 0.1554= 0.9484

The probability 2.60<X <2.63 is 0.9484

Part D"

p= 0.57

From the table z= 0.045

z= x-u/ s

zs= x-u

zs+u = x

x1= 0.045*0.05 +2.61= 2.61225

x2= 2.61- 0.00225= 2.60775

So lower and upper limits are 2.607 and 2.612

For further understanding of probability calculation click

brainly.com/question/25638875

#SPJ1

8 0

2 years ago

The coordinates below are the three vertices of a rectangle. Identify the fourth coordinate and the area of the rectangle. A coo

horrorfan [7]

(2, 2)
Points B and C are symmetric (Divided by the y axis) so that means we have to find the mirrored version of A that is divided by thee y axis which is (2, 2)

6 0

4 years ago

Read 2 more answers

Please help. I need this answer, thanks if you answered. Also please be correct

-Dominant- [34]

The correct answer is 5/7 and 5/4.

We have given that the expression

$a. \frac{2}{7}+\frac{3}{7}$

$b. 2\times \frac{1}{4} +\frac{3}{4}$

<h3>What is the dividando and componendo?</h3>

Components and dividend is a theorem on proportions that allows for a quick way to perform calculations and reduce the number of expansions needed. It is particularly useful when dealing with equations involving fractions or rational functions in mathematical Olympiads, especially when you see fractions.

We have to determine the value of the given expression,

$=\frac{2}{7}+\frac{3}{7} \\=\frac{5}{7}$