The original price of a desk was $80. And its price was marked
down to $70 during the holiday. What was the percentage of
discount for the desk during the holiday?

The exterior angle of a triangle is equal to the sum of the two interior opposite angles, so : f° = a° + b° .

A triangle is a polygon which has 3 sides. The triangles can be divided into 3 types based on the value of the angles: Equilateral, isosceles ,scalene and right angled.

One of the internal angles of a right triangle (also known as a right-angled triangle) measures 90 degrees (a right angle). The hypotenuse, the triangle's longest side, is the side that faces the right angle. The triangle's other two sides are referred to as its legs. Right triangles adhere to the Pythagorean theorem, which states that the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the two legs.

We know when we add all the angles of any given triangle it is 180°

∴ a° + b° + c° = 180°

or, a° + b° = 180° - c°

Now we know that a linear pair the sum of the angles is 180°.

∴c° + f° = 180°

or, f° = 180° - c°

So from the above two equations we can say that

f° = a° + b°

Therefore in the triangle the exterior angle of the triangle is equal to the sum of the two interior opposite angles.

To learn more about triangle visit:

https://brainly.com/question/27682397

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Answer:Therefore, f(−1)=6.

Step-by-step explanation:

So, if  f(x)=x+7 then f(−1)=(−1)+7

Therefore, f(−1)=6.

Answer:

primeroaend:epr )

Step-by-step explanation:

Answer:

The other table needs to be 8ft long as well.

Step-by-step explanation:

To get to 16ft, we need to subtract the 8ft that Henry already has.

16 - 8 equals 8.

So, the other table needs to be 8 feet.

#teamtrees #WAP (Water And Plant)

Answer:

5

Step-by-step explanation:

The answers equivilant to 3 are 1,5,7

Pick the angle is closer to the middle (interior). 5

Answer:

x>7

Step-by-step explanation:

After subtracting 7 from each side, you must flips the less than sign to grater than. This would leave you with x>7.

Answer:

$15    

correct if wrong pls

Step-by-step explanation:

42+56+129= 227 total of deposits

17+32+18= 67 total of withdrawals

227-67= 160

160-145=15 answer

correct if wrong but i think thats the answer

Answer:

2

Step-by-step explanation:

it's division 10/5 is 2 which means in one second it travels 2 floors

Answer:

x=−6

x=2

Step-by-step explanation:

Combine like terms and use the properties of equality to get the variable on one side of the equal sign and the numbers on the other side. Remember to follow the order of operations.

∣x+2∣−5=−1

Add 5 to both sides of the equation.

∣x+2∣=4

Use the definition of absolute value.

x+2=4

x+2=−4

Subtract 2 from both sides of the equation.

x=2

x=−6

Answer:

a

Step-by-step explanation:

sorry if wrong

Answer:

33562, You could have used a calculator, or used your head, why

Step-by-step explanation:

Answer:

D.) [tex]V:x=1;H:y=6[/tex]

Step-by-step explanation:

The vertical intersection of the point is found by the x value. Starting at the point, move down to find the value of x. The vertical line, value x, is 1.

The horizontal intersection of point B is found by the y value. Start at the given point and move to the left to find the y value. The horizontal line, y, is 6.

[tex](vertical,horizontal)\\\\(x,y)\\\\(1,6)[/tex]

:Done

Answer:

the aswer is A

Step-by-step explanation:

Answer:

D. -4,1,7,15

Step-by-step explanation:

Range is the y axis

Answer:

The first angle is 68.

Step-by-step explanation:

[tex]x_{1}+x_{2}+x_{3}=180\\x_{1} = 4*x_{2}\\x_{3}=x_{2}+ 78\\4*x_{2} + x_{2} + x_{2}+ 78 = 180\\6*x_{2}=102\\x_{2} = 17\\[/tex]

So [tex]x_{1}=68[/tex] and [tex]x_{3}=95[/tex]

Answer:

t - (-2,-1)

q - (1,-3)

r - (3,3)

s - (0,2)

Step-by-step explanation:

Answer:

8.9

Step-by-step explanation:

Answer:

8.9

Step-by-step explanation:

8 9/10=8+9/10

=8/1+9/10

=(8/1×10/10)+9/10

=80/10+9/10=8 9/10

We know that

89/10

is the same as

89÷10

Then using

Long Division for 89 divided by 10

gives us

=8.9

Answer:

(e) 20%

Step-by-step explanation:

20/25 = 80/100 = 80% of 25.

If 25/25 = 100%,

then 100% - 80% = 20%

So, the school fees decreased by 20%

Answer:

1/2

Step-by-step explanation:

Answer:

4/45

Step-by-step explanation:

Fraction and find your lcm

Answer:

(1-,3),(2,2),(3-,3),(2,1),

Answer:

Step-by-step explanation:

Correlation occurs when we can observe a trend between the response/dependent variable (y) and the explanatory/independent variable (x).  

When comparing two sets of data, we may observe and use correlation to determine whether or not the data presented if significant or not and whether or not it supports our hypothesis. We may want to see if this is just a fluke and whether or not the trend causes causation.

An example of this would be if we thought that the weight of female mice determines how many kids they have in a month.. Let's say that mice that weigh up to one ounce have 6 baby mice per month.

Let's say that the x variable is the weight which is between 0.25 oz and 1.25 oz and the y-variable is the amount of kids between each month. If another laboratory conducts the same study with the same type of mice with the same weights as us, we would need to determine if there is correlation and if there is causation and try to use this information to determine if both sets of data are significant to our hypothesis.

Answer:

If there is a strong correlation between two variables, it's easy to jump to the conclusion that one causes y and causes X; or that a third factor, Z (or even a whole set of other factors)

Step-by-step explanation:

im confused but i tried

Answer:

Slope = -4

Step-by-step explanation:

(x₁ , y₁) = (0 , 5)   & (x₂ , y₂) = (1 , 1)

[tex]Slope =\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]

         [tex]= \frac{1-5}{1-0}\\\\=\frac{-4}{1}\\= -4[/tex]

Answer:

D. StartFraction 2 centimeters over 7 centimeters EndFraction = StartFraction 15 centimeters over x centimeters EndFraction

Step-by-step explanation:

Answer:

The answer is D!

Hope this helped!

P.S. : Can I get brainliest please?

Answer:

Not me

Step-by-step explanation:

Answer:

isn't it the same as American

Step-by-step explanation:

Answer:

i have autism and adhd and add and dmdd so plz dont yell at me that i did not answer!!!

Step-by-step explanation:

Answer:

30.25 for decimal and

for percent would be 3025%

Answer:

$6

Step-by-step explanation:

Answer:

it would be a 14$ t-shirt there for you save 6 dollars.

Step-by-step explanation:

do the math in a calculator. :D

Answer:

The family will need to purchase 187 square ft carpeting.

Step-by-step explanation:

Area of Rectangles

Given a rectangle with width W and length H, the area is calculated as follows:

A = W * H

The new carpet of the family has the shape provided in the figure. We have completed the shape to add some missing dimensions by adding and subtracting the given lengths. Please refer to the attached image.

The total area of the carpet is the sum of the areas of three rectangles.

The rectangle at the bottom has dimensions 3 ft x 20 ft, thus its area is:

A1 = 3 ft * 20 ft = 60 square ft

The rectangle at the middle has dimensions 3 ft x 17 ft, thus its area is:

A2 = 3 ft * 17 ft = 51 square ft

The rectangle at the top has dimensions 4 ft x 19 ft, thus its area is:

A3 = 4 ft * 19 ft = 76 square ft

The total area of the carpet is:

A = 60 square ft + 51 square ft + 76 square ft

A = 187 square ft

The family will need to purchase 187 square ft carpeting.

Answer:

6.33333 is the answer <3