how many triangles can be formed by joining the vertices of an octagon?need answer and solution pls​

Answer: here

Step-by-step explanation:

The answer comes from the derivation of a straight line model for the cost vs students. Note that the change in cost of 145-135.50 = 9.50 for an increase of students from 25 to 30. The ratio of change of cost to change of students = 9.50/5 = 1.9 and becomes the slope coefficient "m" in the formula y= mx + b. y = the total cost, mx becomes the variable cost and b becomes the fixed cost. To find b, use the data point given where the total cost = $135.50 when the students = 25, or 135.50 = 1.9*25 +b. Solving for b yields $ 88. Note that the other data point is where the total cost is $145 for students = 30. Using the new total cost equation shows that 30*1.9+88= 145 thus verifying the math model works for the data points provided.

Answer:

-155/4

Step-by-step explanation:

-53 + 62/ 4

⬇️

-53 + 62/4

Add

-155/4

Answer: 2

Step-by-step explanation:

7 divided by 3.5 is 2

Answer: a= pq/2 p= 4a

Step-by-step explanation:

Answer:

7/25

Step-by-step explanation:

because its .28

The greatest between the 25% or [tex]\frac{7}{25}[/tex] should be considered as the [tex]\frac{7}{25}[/tex] because it is 28%.

Since one percentage i.e. 25% and one fraction i.e. [tex]\frac{7}{25}[/tex]

We need to determine greater between these two

So the fraction in percentage could be 28%

So we can say that the fraction should be bigger.

hence, The greatest between the 25% or [tex]\frac{7}{25}[/tex] should be considered as the [tex]\frac{7}{25}[/tex] because it is 28%.

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Answer:

The amount of compound interest than simple interest that is earned after 45 years:

$300 is invested.

After 45 years, it will grow to be about $700.

If invested using compound interest, it will grow to be about 1110.

Answer:

Acute angle

Step-by-step explanation:

Since the angle is less than 90 degrees

Answer:

The angle is 112 degrees and the supplement is 68 degrees.

Step-by-step explanation:

Let the angle’s measure be represented by x and the supplement’s measure be represented by y. Since supplementary angles add to 180 degrees, x + y = 180.

Since the supplement is 44 degrees less than the angle,

y + 44 = x

We can substitute y + 44 = x for x in the first equation, since they are equivalent.

y + 44 + y = 180

2y + 44 = 180

2y = 136

y = 68

Substitute 68 for y in one of the original equations and solve.

68 + 44 = x

x = 112

[tex]\begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{40\% of 315}}{\left( \cfrac{40}{100} \right)315}\implies 126~\hfill \underset{\textit{after discount}}{\stackrel{315~~ - ~~126}{189}}[/tex]

If usual price for flight is $315.00, the airline is offering a 40% discount until the end of the month. then the cost of the flight after the discount is 126.

percentage, a relative value indicating hundredth parts of any quantity.

Given that an airline is trying to promote its new Boston to Atlanta flight.

the usual price for this flight is $315.00.

The discount offered by airlines is 40%.

We need to find the cost of the flight after the discount.

Convert 40% to decimal by dividing with 100.

40/100=0.4

Now multiply 0.4 with 315

0.4×315

Zero point four times of three hundred and fifteen.

126

Hence, the cost of the flight after the discount is 126.

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Answer:

18

Step-by-step explanation:

I did my method that I was taught but if you do (-5) - (-2), you get 3. So you subtract 39 by the -21 to get 18.

Answer:

-52.5

Step-by-step explanation:

Answer:

26 seconds

Step-by-step explanation:

39 - 13 = 26

B. 2×2×5×11=220

if you divid 220 by 2=110

110÷2=55, 55÷5=11, 11÷11=1

2, 2,5, 11

Answer:

Levi is fine a_f

Step-by-step explanation:

Answer:

i dont know what AOT is

Step-by-step explanation:

Solution:

We know that:

This means that:

Step-by step calculations:

Combine like terms and simplify:

Subtract 126 both sides:

Divide 2 both sides:

This means that one angle is 27°. Let's find the other angle.

Finding the other angle:

Thus, the measure of the angles are 27° and 153°.

Answer:

27° and 153°

Step-by-step explanation:

Let "x" represent the angle.

We know that supplementary angles must add up to 180 degrees.

First, let's set up an expression for the supplement of the angle "x":

x+126

Now, let's use this information to set up an equation:

[tex]x+x+126=180[/tex]

Combine like terms:

[tex]2x+126=180[/tex]

Subtract 126 from both sides:

[tex]2x=54[/tex]

Divide both sides by 2

[tex]x=27[/tex]

The supplement would be:

[tex]x+126=27+126=153[/tex]

Therefore the measures of the two angles are:

27° and 153°

Answer:

There is no way to solve this..

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

if this helped pls give brainliest

Answer:

Speed of the boat is 9.4mph and the current is 15.4mph

Step-by-step explanation:

Rate= distance/ time

With current; rate= boat+ current= b+c

Against current; rate= boat - current = b- c

30=3(b+c)••••••••••••••eqn(1)

30=5(b-c)•••••••••••••••••eqn(2)

30=3b +3c••••••••••••••eqn(3)

30=5b-5c•••••••••••••••eqn(4)

Solve simultaneously

b=12mph

From eqn(3)

30=3b +3c

Divide both sides by 3, we have

10= b+c

If we make "b" the subject of the formula we have

b= (10-c)••••••••eqn(5)

Divide both side of eqn(4) by 5 we have

6=b-c••••••••eqn(7)

Substitute eqn(5) into 7

6= (10-c)-c

6= 10c-c^2

C^2-10c+6

C= 9.4 or 0.64

Substitute the highest value 9.4 into equation 7

6=b-9.4

b=6+9.4

b= 15.4

Speed of the boat is 9.4mph and the current is 15.4mph

Answer:

she made 80% of the shots over the 2 days

Answer:

4a=4a

Step-by-step explanation:

first you multiply 4 to a then 4 to 2 you'll have 4A + 8 = 8 + 4A you subtract 8 to both sides which will make 0 and the only thing you'll have is 4a equals 4a and that's the answer

Answer: All Real Numbers

Step-by-step explanation:

All Real Numbers . Just completed this quiz

Answer:

374000

Step-by-step explanation:

use a calculator

Answer:

25 degrees?

Step-by-step explanation:

5x + 4 + 2x + 1 = 180

7x + 5 = 180

7x = 175

x = 25 i think???

idrk about the second question though sorry!

The only answer possible is 11 if we are talking whole numbers but something with decimals might work as well, I mean 22 only has 2 dividends and that is 11X2 and 22X1

6.25

meters per second or

22.5

kilometers per hour

Explanation:

1500

meters in

4

minutes or

240

seconds means

1500

240

=

1500

25

240

4

=

25

4

=

6.25

meters per second (dividing by

60

)

or

6.25

×

3600

=

22500

meters per hour

or

22.5

kilometers per hour.

Answer:

This is solved

Step-by-step explanation:

Hope this helps

Answer:

The result can be shown in multiple forms.

Exact Form:

√

23.5

Decimal Form:

4.84767985

…

Step-by-step explanation:

Answer:

2.3, 2 3/10

Step-by-step explanation:

Answer:

9 weeks

Step-by-step explanation:

Answer:

It will take 9 weeks

Step-by-step explanation: