Mathematics High School

find x

3x
2x+40
x+50
4x

Find X3x2x+40x+504x

Answers

Answer 1

Answer:

27

Step-by-step explanation:

The sum of all exterior angles of any quadrilateral= 360°

3x+2x+40+x+50+4x = 360°

11x + 90 = 360°

11x = 360 - 90

10x = 270

x = 270/10

x = 27

Related Questions

Which of the figures is a concave polygon?

Answers

Answer:

B

Step-by-step explanation:

Answer:b

Step-by-step explanation:

PLEASE HELP!! Brainliest to first answer

Part A: An archer shoots an arrow into the sky where the motion of the arrow can be modeled by the equation() = −5^2 + 20 + 4. Where t is time in seconds and f(t) is height in feet. Find how long it will take the arrow to hit the ground using an algebraic method. Round to the nearest tenth if necessary. Show all of your reasoning used with this algebraic method.

Part B: Using the information in Part A, find how high the arrow will go at its maximum height, and how long it takes for this to occur using an algebraic method. Show all of your reasoning used with this algebraic method. Round to the nearest tenth if necessary.

Answers

Answer:

The arrow will take 4.19 seconds to hit the ground

The arrow will go 24 feet to reach its maximum height and it takes 2 seconds to reach this height

Step-by-step explanation:

The quadratic function is f(t) = -5t² + 20t + 4, where

f(t) is the height in feet

t is the time in seconds

If the arrow hit the ground that means h(t) = 0

→ Substitute h(t) by 0 and use the quadratic formula to find t

∵ h(t) = 0

∴ 0 = -5t² + 20t + 4

→ Switch the two sides

∴ -5t² + 20t + 4 = 0

→ Multiply all terms by -1 to make the coefficient of t² positive

∴ 5t² - 20t - 4 = 0

→ The quadratic formula is [tex]t=\frac{-b+-\sqrt{b^{2}-4ac}}{2a}[/tex] , where

a is the coefficient of t²b is the coefficient of tc is the numerical term

∵ a = 5, b = -20, c = -4

∴ [tex]t=\frac{-5+-\sqrt{(-20)^{2}-4(5)(-4)}}{2(5)}[/tex]

∴ [tex]t=\frac{-5+-\sqrt{400+80}}{10}[/tex]

→ Find the values of t in decimal

∴ t = 4.19 seconds OR t = -0.19 ⇒ refused because it is negative

∴ The arrow will take 4.19 seconds to hit the ground

The graph of this quadratic function is a parabola with maximum vertex (h, k), where

h = [tex]\frac{-b}{2a}[/tex]k = f(h)

To find the maximum height and the time taking for this to occur find h and k where k is the maximum height and h is the time for this to occur

∵ f(t) = -5t² + 20t + 4

∵ a = -5 and b = 20

∴ h = [tex]-\frac{20}{2(-5)}=-\frac{20}{-10}=2[/tex]

∴ The time for the maximum height is 2 seconds

→ Now use it to find k

∵ k = f(h)

∴ k = f(2)

∵ f(2) = -5(2)²+ 20(2) + 4

∴ f(2) = -5(4) + 40 + 4

∴ f(2) = -20 + 40 + 4

∴ f(2) = 24

∴ k = 24

∴ The maximum height is 24 feet

The arrow will go 24 feet to reach its maximum height and it takes 2 seconds to reach this height

PLEASE HELP! WILL MARK BRAINLIEST!

Answers

Answer:

-25

Step-by-step explanation:

(-6) (-5) - (-5)

    -30 -(-5)=-25

Solve:
x/4 - x/8 = 5

Answers

Answer:

x=40

Step-by-step explanation:

x/4 - x/8

LCM of 4,8=8

x/4x2/2 - x/8=5

2x/8 - x/8 =5

x/8=5

transpose

x=5x8

x=40

hope this helps

please mark as brainliest


If a person walks 1/4 mile in 10 minutes, how far will that person walk in one hour?

Answers

Answer:

one and a half or 1/2 hours

The correct answer is 1/2

what does x equal to?

Answers

Answer:

27.3

Step-by-step explanation:

x = (36.4 x (49 - 28))/21 = 27.3

Which equation shows a proportional relationship between x and y?

y = 16

y = 7x

y=−7x−2

y = 9x + 1

Answers

The equation that shows a proportional relationship is y = 7x.

How to find the equation that is proportional?

Two variables have a proportional relationship if all the ratios of the variables are equivalent.

In other words, a proportional relationship is one in which two quantities vary directly with each other.

Therefore, a proportional relationship can be represented as y = kx.

where

k = constant of proportionalitythe variables are x and y

Therefore, y varies directly as x in a proportional relationship.

Hence, the equation that shows proportional relationship is y = 7x as 7 is the constant of proportionality. y and x are the variables.

learn more on proportional relationship here: brainly.com/question/20213987

#SPJ1

Answer:

y = 7x

Step-by-step explanation:

the proportional relationship is y = 7x as 7 is the constant of proportionality. y and x are the variables.

i will make you brainlliest whoever answers this right and will give you points Please help me i am having a hard time
Evaluate 14 + (-8) ÷ 2 · -3.

26
-9
-30
15

Answers

14 + (-8) / 2 x -3

Follow order of operations: divide and multiply from left to right:

-8/2 = -4 x -3 = 12

Now you have 14 + 12

The answer is 26

Answer:

26

Step-by-step explanation:

14+(-8) ÷ 2 (-3)

14+ (-4)(-3)

14+12

26

In his​ motorboat, Bill Ruhberg travels upstream at top speed to his favorite fishing​ spot, a distance of 264 ​mi, in 6 hr.​ Returning, he finds that the trip​ downstream, still at top​ speed, takes only 5.5 hr. Find the rate of​ Bill's boat and the speed of the current. Let x​ = the rate of the boat in still water and y​ = the rate of the current.

Answers

Answer:

The values are   [tex]x =  46 miles /hr [/tex]

                            [tex]y = 4 \  miles / hr[/tex]

Step-by-step explanation:

From the question we are told that

   The distance covered is  d =  264 miles

     The time taken is [tex]t_1 =  6 hours[/tex]

     The time taken for the return trip is  [tex]t_2  =  5.5 \ hours[/tex]

Generally during the trip  toward fishing spot , the velocity is mathematically represented as

     [tex]v_t  =  \frac{d}{t_1 } = x - y[/tex]

=>  [tex]v_t  =  \frac{264}{6 } = x - y[/tex]

=>    [tex]x - y  = 44 \cdots 1 [/tex]

Generally during the  return trip  , the velocity is mathematically represented as

      [tex]v_r  =  \frac{d}{t_2}  =  x+ y[/tex]

=>   [tex]v_r  =  \frac{264}{5.5}  =  x+ y[/tex]

=>   [tex]48 =  x+ y\cdots 2[/tex]

add equation 1 and 2

       [tex]2x =  92[/tex]

=>    [tex]x =  46 miles /hr [/tex]

substituting this  into  equation 1

     [tex] 46 - y  = 44 \cdots 1 [/tex]

=>   [tex]y = 4 \  miles / hr[/tex]

What is the slope of a line perpendicular to the line whose equation is
6x - 5y = -40. Fully reduce your answer.

Answers

Answer:

Slope = - 5/6

Step-by-step explanation:

Step 1:

y = mx + b        Slope Intercept Form

Step 2:

6x - 5y = - 40      Equation

Step 3:

- 5y = - 6x - 40       Subtract 6x on both sides

Step 4:

y = 5/6x - 80      Divide 5 on both sides

Step 5:

m = Slope

Answer:

Slope = - 5/6

Hope This Helps :)

Please help. Only help if you know the answer

Answers

Answer:y-7=-9/8(x-0)

Step-by-step explanation:

Answer:

y -7 = -9/8 (x-0)

Step-by-step explanation:

i hope it help

3. What is the measure of angle ABE?

Answers

Answer:

50°

Step-by-step explanation:

Both angles are congruent

Answer:

The measure of angle ABE is 50 degrees because it is a vertical angle to CBD.

Step-by-step explanation:

10 : 35 fraction in simplest from

Answers

- 2/7

What is 10/35 Simplified? - 2/7 is the simplified fraction for 10/35.

-BBBM

Knhrh theme jejrjrh eiie

Answers

Answer:

what

Step-by-step explanation:

Which conversions go from a smaller unit to a larger unit? Select all that apply.
centimeters to millimeters
decimeters to meters
hectograms to kilograms
liters to centiliters

Answers

Answer:

decimeters to meters

Step-by-step explanation:

There are 10 decimeters in a meter.

Answer:

decimeters to meters

hectograms to kilograms

Step-by-step explanation:

choose the graph of the translated parent function f(x)=cos(x) where it is translation 3 units up

Answers

Answer:c

Step-by-step explanation:move up 3 units on the y axis and create the graph

Find the slope between the given points. REMEMBER: Slopes must be simplified.
(-10, 13). (5.-3)

Answers

Answer:

The slope is m= -16/15

help asap i need this todayy

Answers

y = 2/3 , hope this helps !

2x-2y= 14 standard to slope and intercept form

Answers

2x - 2y = 14

-2y = 14-2x

y= -7 + x

y = x - 7

Help plz it’s algebra 2 vertex forms of quadratic function

Answers

Answer:

I did the entire thing I attached the picture for it !! hope this helps !!

I didnt do 5 and 7 cause I forgot how to do those!!

14.625 as a mixed number?

Answers

Answer:

14 5/8

Step-by-step explanation:

the answer would be 117/8

what is 5280 divided by 60

Answers

Answer:

88

Step-by-step explanation:

What role does Geometric formulas have in our lives??

Answers

Geometry helps us in deciding what materials to use, what design to make and also plays a vital role in the construction process itself. Different houses and buildings are built in different geometric shapes to give a new look as well as to provide proper ventilation inside the house.

Hope that helped :)

The equation for line w is y = 2x – 3. Line d contains the point (4, -1) and is parallel to line w. Which equation
describes line d?

Answers

Answer:

y = 2x - 7

Step-by-step explanation:

y = 2x - 3

Gradient of line w = 2

Gradient of line d = 2

i.e line w and d are parallel.

Equation of line d is:

y - (-1) = 2(x - 4)

y + 1 = 2x - 8

y = 2x - 7

How would you write 0.5.... as a decimal?

Answers

it’s already a decimal did u mean percentage??

50% = 0.5

Answer:

0.5 is already a decimal.

Fraction: 1/2

Percent: 50%

Step-by-step explanation:

7. Which number is not a perfect square?
A. 81
C. 169
B. 125
D. 289

Answers

B. 125 because the square root of 125 is 11.180

Answer:

B. 125

Step-by-step explanation:

square roots:

81 = 9

169 = 13

125 = 11.180..

289 = 17

–25y – 35
plz tell me step by step

Answers

the answer will be y= 1.4 ..

find the equation of the line shown
how do you do this ?

Answers

Answer:

y=1/2x+0.5

Step-by-step explanation:

The slope is 1/2, which you can see by looking at the change of y/x. The y intercept is 0.5, which can be seen on the y axis.

Ryan and his brother are at a carnival. They separate from each other at the ferris wheel at 1:00 PM, and they agree that they will each meet back at the ferris wheel from time to time to see whether the other is ready to leave. Ryan checks the ferris wheel every 15 minutes. His brother checks in every 24 minutes. At what time will they meet at the ferris wheel again. (Hint: Don't forget you're looking for a time)

Answers

Answer:

3:00pm

Step-by-step explanation:

The idea hear is to find the least common multiples of 15 and 24

Given that they separated at exactly 1:00pm

the multiples are

15= 15,30,45,60,75,90,105,120

24= 24, 48,72,96,120

the multiples common is 120

Therefore they will meet in 120minute, which is 2 hours time \

hence the time will be 3:00pm

Write the quotient as a power

Answers

Answer:

a^20

Step-by-step explanation:

a^21-a^1

a^20

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