I need help only in number 3

Answer:

1/2bxh  (half a base times the height)

Step-by-step explanation:

Answer:

[tex]8[/tex]

Step-by-step explanation:

[tex]\frac{bh}{2}=A\\\\\frac{4\times4}{2}=A\\\\\frac{16}{2}=A\\\\8=A\\\\A=8[/tex]

Given:

[tex]P(A)=0.4, P(B)=0.7, P(A\text{ and }B)=0.3[/tex]

To find:

The value of [tex]P(A\text{ or }B)[/tex].

Solution:

We know that,

[tex]P(A\text{ and }B)=P(A\cap B)[/tex]

[tex]P(A\text{ or }B)=P(A\cup B)[/tex]

It means, we have [tex]P(A)=0.4, P(B)=0.7, P(A\cap B)=0.3[/tex] and we need to find the value of  [tex]P(A\cup B)[/tex].

[tex]P(A\cup B)=P(A)+P(B)-P(A\cap B)[/tex]

[tex]P(A\cup B)=0.4+0.7-0.3[/tex]

[tex]P(A\cup B)=1.1-0.3[/tex]

[tex]P(A\cup B)=0.8[/tex]

Therefore, the value of [tex]P(A\text{ or }B)[/tex] is 0.8.

Answer:

The number of new trailer homes that were added two years ago is 10

Step-by-step explanation:

Given that

Twenty years ago there are 20 trailer homes having an average age of 18 years

Today, the average of the age is 14 years

We need to find out the number of new trailer homes that would be added two years ago

Since as of now 20 trailer homes would be an average of 20 years and we assume the new trailers be n that are 2 years old

So

20 +  n

And, the sum of their ages i.e. (20) ( 20)  + 2n

Now the following equation is used

[tex]\frac{400 + 2n}{20 + n} = 14[/tex]

400 + 2n = 14(20 + n)

400 + 2n = 280 + 14n

120 = 12n

n = 10

Hence, the number of new trailer homes that were added two years ago is 10

Answer:

it c

Step-by-step explanation:

Answer:

6)31.25

7)622.92

8)16.666... or 16 2/3 or 50/3

9) 72

Step-by-step explanation:

Answer:

The equation of the line is;

y + 4 = 3(x + 4)

Step-by-step explanation:

The general equation of a line is;

y = mx + b

where m is the slope and b is the y-intercept

To get the equation, let us look at the given intercepts

We have the intercepts at the point (0,5) and (-2,-1)

We have the slope of the line as follows;

m = (y2-y1)/(x2-x1) = (-1-5)/(-2-0) = -6/-2 = 3

So we have the equation as;

y = 3x + b

recall, we have the y-intercept as 5

so the complete equation is;

y = 3x + 5

Now, we can rewrite this as;

y+ 4 = 3(x + 3)

Answer: D=16

Add 4 to both sides

D=16

Answer:

Answer: 16

Step-by-step explanation:

Do 12 -(-4 to get D

12 -(-4 = 16

Answer:

Step-by-step explanation:

(x-1)(x+3)(x-9)(x+1)(x-9)(x+1)(x+1)  

the above works out.  but not sure what other choices you had in the answer

Answer:

(x-1)(x+3)(x-9)(x+1)(x-9)(x+1)(x+1)  

Step-by-step explanation:

Question

In triangle ABC, the bisectors of angle A, angle B, and angle C cut the opposite sides into lengths a1, and

a2, b1, and b2, and c1 and c2, respectively, labeled in order counterclockwise around triangle ABC for

a1 = 5/3, a2 = 10/3,b1 = 15/4. Find the perimeter of triangle ABC.

Step-by-step explanation:

Answer:

answer is -1.75

Step-by-step explanation:

[tex]y = 12 \\ y = - 4x + 5 \\ \\ \: \: \: \: 12 = - 4x + 5 \\ - 5 \: \: \: \: \: \: \: \: \: \: \: - 5 \\ \\ 7 = - 4x \\ \div - 4 \: \: \: \: on \: both \: sides \\ \\ - 1.75 = x[/tex]

Answer:

Step-by-step explanation:

Proportional relationships are relationships between two variables where their ratios are equivalent. Another way to think about them is that, in a proportional relationship, one variable is always a constant value times the other. That constant is know as the "constant of proportionality".

Answer:https://youtu.be/QZ_a8VXhiSc?t=187

Step-by-step explanation:https://youtu.be/BX0K5IfPMOA?t=144

Answer:

true

Step-by-step explanation:

Answer:

9 x 7 = 63 <---- Parallelogram

10 x 6.8 = 68, 68 divided by 2 = 34 <------- Triangle

13 + 15 = 28, 28 x 6 = 168, 168 divided by 2 = 84 <------- Trapezoid

The trapezoid has the greatest area.

Formula of trapezoid:

B1(base 1) + B2(base 2) x H (height) x 1/2 (basically dividing by 2)

Formula of triangle:

B(base) x H(height) x 1/2 (basically dividing by 2)

Formula of Parallelogram:

B(base) x H(height)

Answer: B) established a strong, central government

Answer:

The emperor Chandragupta is established a strong, centralized government

Answer:

8 weeks

Step-by-step explanation:

Let

w = number of weeks

John = 12 + w

Aiden = 4 + 2w

How many weeks (w) will it be before Aiden knows as many songs as John?

Equate both John and Aiden expression

John = Aiden

12 + w = 4 + 2w

Collect like terms

12 - 4 = 2w - w

8 = w

w = 8 weeks

It will take 8 weeks before Aiden knows as many songs as John

Answer:

1500 grams of grain

Step-by-step explanation:

How many grams of grain will there be in 2.4 kg of shelled hazelnuts?

Step 1

Convert kg to g

1 kg = 1000g

2.4 g = x

Cross Multiply

x = 2.4 × 1000g = 2400g

Step 2

An 800 gram sample of shelled hazelnuts has 500 grams of grain.

Hence,

800g hazelnuts = 500 gram of grain

2400g hazelnuts = x

Cross Multiply

800x = 2400g × 500g

x = 2400g × 500g/800

x = 1500 grams of grain

Answer:

99

Step-by-step explanation:

i have all the steps in the comments of ur question

Answer:

Plz subscribe my Gaming channel Sameer Duos

Step-by-step explanation:

The correct answer is whole number

Answer:

It would be D

Step-by-step explanation:

Answer:

3rd option, you are correct

Step-by-step explanation:

A tangent is a straight line with only 1 point of contact to the circle.

This is the case at points R and Z

Answer:

3rd option just to reassure everyone

Answer:

39/25

Step-by-step explanation:

i use a very good app to find the answer

Q) [tex]\left(\frac{1}{3}+\frac{3}{4}\right)[/tex] ÷ [tex]\left(\frac{5}{6}\right)^{2}[/tex] =?

→ [tex]\left(\frac{1×4}{12}+\frac{3×3}{12}\right)[/tex] × [tex]\left(\frac{6}{5}\right)^{2}[/tex]

→ [tex]\left(\frac{4}{12}+\frac{9}{12}\right)[/tex] × [tex]\left(\frac{36}{25}\right)[/tex]

→ [tex]\frac{13}{12}[/tex] × [tex]\frac{36}{25}[/tex]

→ [tex]\frac{468}{300}[/tex] = [tex]\frac{39}{25}[/tex]

Answer:

[tex]9450 {m}^{3}[/tex]

Step-by-step explanation:

Given ,

Length of the tank = 27m

Width of the tank = 35m

Depth of the tank = 10m

Therefore,

Volume of the tank = Length × Width × Depth

= 27m × 35m × 10m

[tex] = 9450 {m}^{3} (ans)[/tex]

Answer:

9450

Step-by-step explanation:

volume = length x width x height=27 x 35 x 10

Answer:

81,412,650

Step-by-step explanation:

im not sure if this is what ur asking for??

Answer:

Step-by-step explanation:

Based on the given, we have equations:

Multiply the first equation by 29 and the second one by 30, then subtract the first equation from the second:

The cost per unit of gas is $0.15

Answer:

B

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

count with your fingers

9514 1404 393

Answer:

  see attached

Step-by-step explanation:

The various forms of the expression use the relation ...

  -5 1/4 = -5 + -1/4 = -(6 -3/4) = -6 +3/4

Of course, the minus sign in a product can be moved around according to the associative and commutative properties of multiplication.

(8)(-5 1/4)

= (8)(-5 + -1/4)

= 8(-5) +8(-1/4)

= 8(-5) -8(1/4)

= 8(-6 +3/4)

Attached is the non-equivalent expression.

Answer:

hshysywyyw6w6wywhwhwqhhwhwhh

Step-by-step explanation:

vejejjeejjejejejfjj237 68672_773837 8282×786766

bbdjdjejjefu8du uwj udej hbvv jjj un jududjdj8

Answer:

1:23

Step-by-step explanation:

20 / 460

= 1 / 23

= 1:23