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
enot [183]
2 years ago
8

MULTIPLE CHOICE QUESTION PLS HELP ME

Mathematics
1 answer:
marysya [2.9K]2 years ago
4 0

Answer:

The answer is C.

You might be interested in
Given a rectangle with length of (2x+9)cm and width of (3x+1)cm.Two squares, each with sides x cm is removed from the rectangle.
il63 [147K]

Answer: The length is 13cm and the width is 7cm

Step-by-step explanation:

For a rectangle of length L and width W, the area is:

A = W*L

In this case we have:

L = (2*x + 9) cm

W=(3*x + 1) cm

Then the area of the rectangle is:

A = (2*x + 9)*(3*x + 1) cm^2

A = (6*x^2 + 2*x + 27*x + 9) cm^2

A = (6*x^2 + 29*x + 9) cm^2

now we remove two squares with sides of x cm

The area of each one of these squares is (x cm)*(x cm)  = x^2 cm^2

Then the area of the figure will be:

area = (6*x^2 + 29*x + 9) cm^2 - (2*x^2 ) cm^2

area = (4*x^2 + 29*x + 9) cm^2

Now we know that the area of this shape is 83 cm^2, then we need to solve:

83 cm^2 = (4*x^2 + 29*x + 9) cm^2

0 =  (4*x^2 + 29*x + 9) cm^2 - 83 cm^2

0 = (4*x^2 + 29*x - 74) cm^2

Then we need to solve:

0 = 4*x^2 + 29*x - 74

Here we can use Bhaskara's equation, the solutions of this equation are given by:

x = \frac{-29 \pm \sqrt{29^2 - 4*4*(-74)}  }{2*4} = \frac{-29 \pm 45}{8}

Then the two solutions are:

x = (-29 - 45)/8 = -9.25  (for how the length and width are defined, we can not have x as a negative number, then this solution can be discarded).

The other solution is:

x = (-29 + 45)/8 = 2

x = 2

Then the length and width of the rectangle are:

Length = (2*2 + 9)cm = 13 cm

Width = (3*2 + 1)cm = 7cm

4 0
2 years ago
1/4 of the original price is marked down if the sales price is 128.00 what is the original price DONT not round your answer to t
mr_godi [17]

Answer:

Ipguifiyfohvlbouviyfiyfyivojviyc itcitditcyivuy if it go

7 0
3 years ago
Jalil and Victoria are each asked to solve the equation ax – c = bx + d for x. Jalil says it is not possible to isolate x becaus
Iteru [2.4K]
<span>solve the equation ax – c = bx + d for x:

1) Group the x terms together on the left:     ax - bx - c = d

2) Group the constant terms together:          ax - bx = c + d

3) factor out x:                                             x(a - b) = c + d

4) Divide both sides of the equation by (a - b) to obtain a formula for x:
                                                       c+d
</span>           x(a - b) = c + d   =>    x = ---------
                                                       a-b

This shows that the given equation CAN be solved for x, but there is a restriction:  a must NOT equal b, because if a-b = 0, we'd have division by zero (which is not defined).

Where is Victoria's solution?  Please share it if you want to discuss this problem further.  Thank you.

8 0
3 years ago
Read 2 more answers
Use the Remainder Theorem to find the remainder: (16x^4 – 8x^3 – 4x + 1) ÷ (2x + 1)
vodka [1.7K]

Answer:

5

Step-by-step explanation:

This illustrates the Remainder Theorem. If a polynomial f(x) is divided by x−a , the remainder is the constant f(a) , and f(x)=q(x)⋅(x−a)+f(a) , where q(x) is a polynomial with degree one less than the degree of f(x) . Synthetic division is a simpler process for dividing a polynomial by a binomial.

3 0
3 years ago
Sean lives about 15.5 miles from the airport.which number rounds to 15.5 when rounded to the nearest tenths
stiv31 [10]

Answer: 16

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • 1) The graph of a bicycle ramp contains the points (-6,0) and (3,3). What is 5 points
    11·1 answer
  • How do I write this standard form-582,693
    9·1 answer
  • Find the distance, c, between (0, 0) and (–4, –3) on the coordinate plane. Round to the nearest tenth if necessary.
    5·1 answer
  • A large company wants to administer a satisfaction survey to its current customers. Using their customer​ database, the company
    14·1 answer
  • If one zero of the polynomial (a^2+9)x^2+13x+6a is the reciprocal of the other, find the value of a.​
    5·1 answer
  • Sam rides his bike at a rate of 15 miles per hour. How many feet per minute is this?
    7·1 answer
  • What is the number 0 gonna be?
    11·2 answers
  • A number z squared, decreased by 7
    14·1 answer
  • Sketch the graph of the equation 3(y - 5) = 6 (x + 1)
    9·1 answer
  • Solve 6^x+2 = 10 for x using the change of base formula
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!