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3 years ago

I need help pls its a review form few years ago i cant rember the greeen and gray box pls help me

Mathematics

1 answer:

Anvisha [2.4K]3 years ago

5 0

Answer:

The answer is 21 remainder 6

Step-by-step explanation:

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What is the perimeter of quadrilateral ABCD?

alex41 [277]

Answer:

Perimeter of quadrilateral $ABCD$ will be $104$

Step-by-step explanation:

Given quadrilateral $A'B'C'D'$ is a reflection of quadrilateral $ABCD$ over the line $m$ .

So, all the corresponding sides of both the quadrilateral should be equal.

Also, we can see from the diagram that $A'D'=32,\ A'B'=22,\ BC=20,\ and\ CD=30$

As both image are reflection of same scale we can add corresponding sides.

So, the perimeter of $ABCD$ will be

$AB+BC+CD+DA$

And we have $AB=A'B'\ and\ AD=A'D'$

Now, perimeter of $ABCD$ will be $22+20+30+32$

Perimeter of quadrilateral $ABCD$ is $104$

5 0

3 years ago

HOW DO I SOLVE THIS FAST I NEED TO KNOW ASAP

artcher [175]

Answer:

Solve what? lol

8 0

3 years ago

Solve the system by the elimination method.

joja [24]

Answer: B

Step-by-step explanation:

YOU MINUS 4 -4 WHICH IS -8 SO ITS B

8 0

3 years ago

Read 2 more answers

From a group of 3 men and 4 women, a delegation of 2 is selected. What is the expected number of men in the delegation?

Ostrovityanka [42]

Answer:

The expected number of men in the delegation is 0.86.

Step-by-step explanation:

Number of men = 3

Number of women = 4

A delegation of 2 is selected.

Let X be the number of men selected. So, the possible values of X are 0,1,2.

$P(X=0)=\dfrac{^3C_0\times ^4C_2}{^7C_2}=\dfrac{2}{7}$

$P(X=1)=\dfrac{^3C_1\times ^4C_1}{^7C_2}=\dfrac{4}{7}$

$P(X=2)=\dfrac{^3C_2\times ^4C_0}{^7C_2}=\dfrac{1}{7}$

The expected number of men in the delegation is

$E(x)=0\times P(X=0)+1\times P(X=1)+2\times P(X=2)$

$E(x)=0\times \dfrac{2}{7}+1\times \dfrac{4}{7}+2\times \dfrac{1}{7}$

$E(x)=\dfrac{6}{7}$

$E(x)\approx 0.86$

Therefore, the expected number of men in the delegation is 0.86.

4 0

2 years ago

A triangle has side lengths of (5.9d – 1.1f) centimeters, (3.4d – 9.1g)

Gekata [30.6K]

Answer: 9.3d−g-10.4f

Step-by-step explanation:

7 0

2 years ago