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3 years ago

Help help help help help help

Mathematics

2 answers:

Alborosie3 years ago

7 0

Area is 8 perimeter is 12

BlackZzzverrR [31]3 years ago

5 0

Answer:

A = 8 km^2

B = 12 km

Step-by-step explanation:

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List all the ways to select two members from S with repetition. The order in which the members are selected is not important. Fo

nexus9112 [7]

Answer:

15 ways

Step-by-step explanation:

We are given that a set S={E,F,G,H,J}

We have to find the number of ways to select two members from S with repetition.

Combination formula

$\binom{n}{r}=\frac{n!}{r!(n-r)!}$

We have n=5 , r= 2

Number of ways in which two members from S can be selected when repetition is not allowed= $5C_2=\frac{5!}{2!(5-2)!}$

Number of ways in which two members from S can be selected when repetition is not allowed= $\frac{5\times4\times3!}{2\times1 3!]$

Number of ways in which two members from S can be selected when repetition is not allowed= $5\times 2=10$

When a member repeat then combination

{E,E},{F,F},{G,G},{H,H},{J,J}

There are 5 combination when a member is repeat and select two members from S.

Total number of ways in which to select two members from S with repetition =10+5=15 ways

3 0

4 years ago

What is the square root of 12345

nexus9112 [7]

The square root of 12345 cannot be reduced but it’d be 111.108

7 0

3 years ago

Read 2 more answers

The graph below shows the distance John hiked while camping at Sweetwater Park. What was his average rate of change between hour

Lisa [10]

94 Degrees
Hope this helps!

3 0

3 years ago

In this diagram, bac~edf. if the area of bac= 6 in.², what is the area of edf? PLZ HELP PLZ PLZ PLZ

Bad White [126]

Answer:

2.7 in²

Step-by-step explanation:

Since ∆BAC and ∆EDF are similar, therefore, the ratio of their area = square of the ratio of their corresponding side lengths.

Thus, if area of ∆EDF = x, area of ∆BAC = 6 in², EF = 2 in, BC = 3 in, therefore:

$\frac{6}{x} = (\frac{3}{2})^2$

$\frac{6}{x} = (1.5)^2$

$\frac{6}{x} = 2.25$

$\frac{6}{x}*x = 2.25*x$

$6 = 2.25x$

$\frac{6}{2.25} = \frac{2.25x}{2.25}$

$2.67 = x$

$x = 2.7 in^2$ (nearest tenth)

3 0

3 years ago

Solve for x. Show your work.

puteri [66]

So, these are actually pretty simple once you learn the equality used to solve for "x" and when to implement this method. You can use this equality to solve for a segment "x" anytime that two secant lines cutting through a circle come from the same point outside the circle.

Secant: by geometric definition is just a straight line that cuts a curve into multiple pieces.

I did one of them for you hopefully you can use my work for "a" to help you solve for "b". For a. I got x=7.

6 0

4 years ago