1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mote1985 [20]
3 years ago
9

How do I solve this?

Mathematics
1 answer:
Alecsey [184]3 years ago
4 0
Add them together and  subtracct thee total.
You might be interested in
Evaluate the expression.<br> 23.6 - 2x3° divides by 2
Grace [21]
43 is thee answererrr
5 0
3 years ago
Need help urgently, please
Kaylis [27]
Answer: 26

There’s nothing here for me to solve
3 0
3 years ago
The table includes points on a quadratic function used to model the shape of a hole for one support beam at a new building site.
erastovalidia [21]

The hole is 8 feet deep at ground level ⇒ 3rd answer

Step-by-step explanation:

The form of the quadratic function is y = ax² + bx + c, where

  • a is the coefficient of x²
  • b is the coefficient of x
  • c is the y-intercept (at x = 0)

The vertex point of the quadratic is (h , k), where h=\frac{-b}{2a}

and k is the value of y when x = h

The table:

→  x  :  -2   ,  0  ,  2

→  y  :  -6   , -8  ,  -6

∵ x represents distance from hole's center in feet

∵ y represents the depth from level ground

∴ The quadratic function is y = ax² + bx + c

∵ c is the value of y at x = 0 ⇒ y-intercept

- From the table at x = 0 ⇒ y = -8

∴ c = -8

- Substitute its value in the function model

∴ y = ax² + bx - 8

- To find the values of a and b substitute x and y in the model by

   the coordinates of the point in the table

∵ x = -2 and y = -6

∴ -6 = a(-2)² + b(-2) - 8

∴ -6 = 4a - 2b - 8

- Add 8 to both sides

∴ 2 = 4a - 2b

- Switch the two sides

∴ 4a - 2b = 2 ⇒ (1)

∵ x = 2 and y = -6

∴ -6 = a(2)² + b(2) - 8

∴ -6 = 4a + 2b - 8

- Add 8 to both sides

∴ 2 = 4a + 2b

- Switch the two sides

∴ 4a + 2b = 2 ⇒ (2)

Now we have a system of equation to solve it

Add equations(1) and (2) to eliminate b

∵ 8a = 4

- Divide both sides by 8

∴ a = 0.5

- Substitute value of a in equation (1) or to to find b

∵ 4(0.5) + 2b = 2

∴ 2 + 2b = 2

- Subtract 2 from both sides

∴ 2b = 0

- Divide both sides by 2

∴ b = 0

Substitute the values of a and b in the function model

∴ y = 0.5x² + (0)x - 8

∴ y = 0.5x² - 8

∵ y represents the depth from level ground

∵ The vertex of the function model is (h , k)

∴ The deep of the hole at ground level is the value of k

∵ h=\frac{-b}{2a}

∴ h=\frac{-(0)}{2(0.5)}

∴ h = 0

∵ k is the value of y when x = h

- From the table at x = 0 ⇒ y = -8

∴ k = -8

- Ignore the sign (-) because the k represents the depth of the

  hole in feet

∴ The deep of the hole at ground level is 8 feet

The hole is 8 feet deep at ground level

Learn more:

You can learn more about the quadratic function in brainly.com/question/1332667

#LearnwithBrainly

4 0
3 years ago
Write a polynomial in standard form that represents the area of the shaded region.
mr_godi [17]

Area of rectangle is 2x^2+x-45

Step-by-step explanation:

Given:

Length of rectangle = 2x-9

Width of rectangle = x+5

Required:

Area of rectangle

Formula:

Area\,\,of\,\,rectangle=Length*Width

Putting values of length and width:

Area\,\,of\,\,rectangle=Length*Width\\Area\,\,of\,\,rectangle=(2x-9)(x+5)\\Area\,\,of\,\,rectangle=2x(x+5)-9(x+5)\\Area\,\,of\,\,rectangle=2x^2+10x-9x-45\\Area\,\,of\,\,rectangle=2x^2+x-45

So, Area of rectangle is 2x^2+x-45

Keywords: Area of rectangle

Learn more about Area of rectangle at:

  • brainly.com/question/3411756
  • brainly.com/question/6837543
  • brainly.com/question/4713715
  • brainly.com/question/6564657

#learnwithBrainly

3 0
3 years ago
Determine whether ab is parallel to cd
shtirl [24]

Answer:

Yes, it is.

Step-by-step explanation:

When alternate interior angles (∠ABC and ∠BCD) are congruent, it means the lines are parallel.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Ryan bought fishing gear, they cost 51.50,14.99,and 5.79. The sales tax was calculated by multiplying the total cost of the fish
    10·1 answer
  • What is the simplest form of the monomial given in factored form
    15·1 answer
  • please help :) What is 7.7 x 10 to the 8 power written in standard form? A. 770,000,000 B. 77,000,000,000 C. 77,000,000 D. 7,700
    8·1 answer
  • Find the area of the parallelogram WILL GIVE BRAINLIEST FOR A LITTLE WORK SHOWN!
    6·2 answers
  • Solve the equation please
    11·1 answer
  • A case of bottled juice contains 30 bottles.Each case contained a total of 507 ounces of juice.Which equation represents the rel
    13·1 answer
  • Use the drawing tool(s) to form the correct answers on the provided graph. In the given equation, y is a function of x. Graph th
    12·1 answer
  • we believe that 81% of the population of all business statistics students consider to be an exciting subject​
    9·1 answer
  • The length of a rectangle is 4yd longer than its width. If the perimeter of the rectangle is 72yd, find its length and width.
    7·1 answer
  • A football field is 120 yards long by 53yr wide. If a player runs diagonally from one corner to the opposite corner, how far wil
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!