15 POINTS PLEASE HELPP
[0,2]
[2,6]
[6,10]

Answer:

n= -6, a= 5

Step-by-step explanation:

Label the two equations:

a= -2n -7 -----(1)

-3a +n= -21 -----(2)

Substitute (1) into (2):

-3(-2n -7) +n= -21

Expand:

-3(-2n) -3(-7) +n= -21

6n +21 +n= -21

Simplify, minus 21 on both sides:

7n= -21 -21

7n= -42

Divide both sides by 7:

n= -42 ÷7

n= -6

Substitute n= -6 into (1):

a= -2(-6) -7

a= 12 -7

a= 5

the area of the shaded region : (9x3)+(12x3) = 27+36=63

The area of the shaded region is equal to the subtraction of the total area to the area of the two small squares and one big square. Then the area of the shaded region is 63 square units.

It deals with the size of geometry, region, and density of the different forms both 2D and 3D.

All of the quadrilaterals in the shape below are squares.

Then the area of the shaded region will be

The area of the shaded region is equal to the subtraction of the total area to the area of the two small squares and one big square.

Area = 15 × 15 - 3 × 3 - 3 × 3 - 12 × 12

Area = 225 - 9 - 9 - 144

Area = 225 - 162

Area = 63

The area of the shaded region is 63 square units.

More about the geometry link is given below.

https://brainly.com/question/7558603

Answer:

D

Step-by-step explanation:

Answer:

Emily = 49

Asif = 7

Step-by-step explanation:

Let's take the number of marbles given to asif  = x

Then, the marbles got by Emily will be 7 times that of asif 7x

Then,

7x + 1x = 56

8x = 56

x = 56/8

x = 7

So, number of marble asif got = x = 7

And number of marbles Emily got = 7x = 7 * 7 = 49

[RevyBreeze]

Answer

The probability of this occurring is 1/7

Step-by-step explanation:

Okay, here is a probability question.

From the question, we can identify the following;

Total number of socks = 2 + 4 + 2 = 8 socks

Since we are not given the order in which the socks was worn, we can assume any order.

Let’s say the right leg socks was worn first.

From the question, the socks on the right leg is a brown one.

So now let’s calculate the probability of selecting a brown socks out of the mix

That would be ;

number of brown socks/ total number of socks = 4/8 = 1/2

Now, for the left foot, we are having white sock here.

Kindly recall that since we already have a sock on the right foot, we have 7 socks left to pick from.

Now we need the probability of picking a white sock from the total 7. That would be ; 2/7

So the probability of both action occurring is simply the product of both probabilities and that is ;

1/2 * 2/7 = 1/7

Answer:

x > 4 you would graph with an open circle and x ≥ 4 you would graph with a closed circle. The question x is greater than or equal to 4 you would have the line going to the right, the same thing with x > 4. Hope this helped.

Step-by-step explanation:

Answer:

5832

Step-by-step explanation:

15 - 7 = 8

8 × 2 = 16

16 + 2 = 18

18 × 18 × 18 = 5832

Answer:

D) 2•10^9

Hopes this helps wish you well

Answer:

a

Step-by-step explanation:

Let's go through each answer choice.

The formula for Area of a rectangle is [tex]A=l*w[/tex]

a.

[tex]A=l*w=19*20=380\ ft^2[/tex]

b.

[tex]A=l*w=17*22=374\ ft^2[/tex]

c.

[tex]A=l*w=21*18=378\ ft^2[/tex]

d.

[tex]A=l*w=23*16=368\ ft^2[/tex]

Upon evaluation of each answer choice, we can conclude:

[tex]380 > 378 > 374 > 368[/tex]

Therefore the answer is a.

Answer:

two situations in which a person or business might use probability to make a decision

1.  Weather Forecasting

2.  Sales Forecasting

explanation

Weather Forecasting : the individual might question themselves about what the weather is gonna look like the day . is it gonna rain ? should I bring an umbrella ? should i take the car to work just incase it starts raining , or should I walk on foot and enjoy the hot sun?

Many retailers use probability to forecast the possibility of selling a specific amount of products on a given day, week, or month. This allows companies to forecast how much stock they will require in the future. A company, for example, may use a forecast model that claims it has a 90% chance of selling at least 100 items on a given day. To avoid running out of items to sell, keep at least 100 (preferably more) on hand at all times.

Answer:

 3r4s7t19

 ————————

    7    

Step-by-step explanation:

Answer:

The answer is A. He can only work 2 more days with 8 hours a day

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

The sentence that explains how the bonding pattern in metals makes them good conductors of electricity is A. They are willing to give up their valence electrons.

Valence electrons are the electrons in the outermost shell, or energy level, of an atom, which participate in the formation of a chemical bond when the outer shell is open.

A. They are willing to give up their valence electrons.

B. Their nucleus has more protons than neutrons.

C. They are malleable.

D. They have a simpler electron arrangement.

Thus, the sentence that explains how the bonding pattern in metals makes them good conductors of electricity is Option A.

Learn more about conductors of electricity at https://brainly.com/question/2624096

The time taken by Oliver to complete the work is less than or equal to twice the work done by Karissa.

Option B shows the correct equation of inequality to write the time taken to complete the work.

Inequality can be defined as a relation that makes a non-equal comparison between two numbers or other mathematical expressions.

Given that Oliver completed his project in no more than twice the amount of time it took Karissa to complete her project. Also, the time taken to complete the project is,

Oliver = 4 and one-fourth hours

Karissa = K hours

As per the given condition, the work done by Oliver should not be more than twice the work done by Karissa. It can be equal or less. So we can write this in equation form as,

Oliver [tex]\leq[/tex] 2 Karissa

[tex]4\dfrac {1}{4} \leq 2K[/tex]

Hence Option B shows the correct equation of inequality to write the time taken to complete the work.

To know more about inequality, follow the link given below.

https://brainly.com/question/363094.

Answer:

b

Step-by-step explanation:

Step-by-step explanation:

The pair of triangles that are congruent by the SAS criterion is Δ BAC and ΔRQP.hope this helps

Answer:

i can't rly read number 22 srry

b x+1>0=x>-1

c x+1<0=x<-1

Hope This Helps!!!

Answer:

Since we know that each of the three triplets are the same age we can put next to n, 3.

And given that another child is 14 years old we can put that next to the "+" sign.

In total, it would equal 32, so put the 32 after the equal sign.

It should look like this:

3n + 14 = 32

But now they want us to solve for the triplet's ages, so we just solve for n;

3n + 14 = 32

-14          -14

3n = 18

/3     /3

n = 6, the triplet's ages are 6 years old each.

Factors of the given expression are [tex](x+4), (2x+1)[/tex]

Given expression is

[tex]2x^2 + 9x+4[/tex]

A factor is a number that divides another number completely.

Let us split the middle term as:

[tex]2x^2 + 8x + x+4\\\\2x(x+4)+1(x+4)\\\\(x+4) (2x+1)[/tex]

Therefore, factors of the given expression are [tex](x+4), (2x+1)[/tex]

To get more about factors visit:

https://brainly.com/question/9781037

Answer:

Your Answer Mate- (2x + 1)(x + 4)

Step-by-step explanation:

(2x^2 + 8x)(x + 4).

(2x^2 + 8x)

2x(x + 4)

1(x+4)

Your factors are now (2x + 1)(x + 4)

Step-by-step explanation:

d. the light become bri--

Answer:

a i think hope i help

Step-by-step explanation:

Add black and white together:

3/6 + 2/6 = 5/6

Answer: 5/6

Answer:

60, 78

Step-by-step explanation:

To find a pattern, try experimenting.

Going from 8 to 18 is + 10

Going from 18 to 30 is + 12

Going from 30 to 44 is + 14

We see that we add 2 more extra than the term before (+10, +12, +14)

So, we just add 2 for the next 2 terms which will be +16 and + 18

which are 44 + 16 = 60

and 60 + 18 = 78

Answer:

im not sure but the pattern im seeing is adding by even numbers i could be wrong but I think the next two numbers are 60, and 78

Step-by-step explanation:

8 + 10 is 18

18+ 12 is 30

30 +14 is 44

so i did

44+16 and got 60

and 60 + 18 is 78.

Answer:

I think 18

Step-by-step explanation:

95 divided by 5 is 19 and 342 divided by 19 = 18.

Answer:

Step-by-step explanation:

Two sides of the rectangle differ by 3.5 cm means that one side is 3.5 cm more than the other side.

If width = x cm, then length = x + 3.5

Perimeter = 67 m

2*(length +width) = 67

2*(x + 3.5 + x) = 67

2*(2x + 3.5)  = 67

2*2x + 2*3.5 = 67

4x  + 7   = 67

       4x = 67 - 7

       4x = 60

         x = 60/4

x = 15 cm

Width = 15 cm

Length = 15 + 3.5

           = 18.5 cm

Answer: The answer is B. 800 feet.

Step-by-step explanation: Look at the place on the x-axis (time) where 2.5 is. Now, look where the line intersects the vertical line of 2.5 minutes. It is at around 800 feet, so B is the correct answer.

The value of x in the given equation −30x+855=−345 is 4.

An equation is formed of two equal expressions, equated together with the help of an equal sign '='.

The value of x can be written as,

[tex]-30x+855=-345\\\\-30x=-345-855\\\\-30x=-1200\\\\30x=1200\\\\x=4[/tex]

Hence, the value of x in the given equation −30x+855=−345 is 4.

Learn more about Equation:

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Answer:

it does not exist

Step-by-step explanation:

if it is a geometric sequence, there must be a common ratio or multiplication factor between neighboring terms :

102 × r = 112.2

r = 112.2/102 = 1.1

is 112.2 × 1.1 = 123.42 ?

yes.

so, it is a geometric sequence with the common ratio of 1.1.

the problem is now : the ratio is > 1.

that means the sequence tends are growing, and growing, and the sum is therefore rather "exploding" than converging.

for the sum to converge to a specific number the individual terms need to get smaller and smaller in absolute numbers.

with r > 1 this is impossible, so there is no sum for this sequence (with n going to infinity, so does the sum, and as "infinity" is not a value per se, the sum does not exist).