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
netineya [11]
3 years ago
5

Solve each data for x: (a) a rectangle has (2x + 1) and (x +2) as length and width. Its area is 77 (b.) a triangle has (2x+2) an

d (x+3) as base and height. Its area is 35
Mathematics
1 answer:
Sergio039 [100]3 years ago
7 0
Area of a rectangle: A= Length*width
(2x+1)(x+2)=77
2x^2+4x+x+2=77
2x^2+5x+2=77
2x^2+5x-75=0
(x-5)(2x+15)=0
x=5 or x=-7.5
Length cannot be negative, so x=5 only
the length is 11, the width is 7
Next, let's look at the triangle.
Area of a triangle: A=1/2 of base*height
(1/2)(2x+2)(x+3)=35
2x^2+8x+6=70
2x^2+8x-64=0
x^2+4x-32=0
(x-4)(x+8)=0
x=4
the base is 10, the height is 7
You might be interested in
Which expression is a binomial? A. P(to the second power) B. 3W. C. 3W+1. D. 3P(to the second power)+2P+2
Lapatulllka [165]
C
there are 2 different values
5 0
3 years ago
One of the wagers in roulette is to bet that the ball will stop on a number that is a multiple of 3. (Both 0 and 00 are not incl
Arlecino [84]

Answer:

The players expectation is -0.1052

Step-by-step explanation:

Consider the Roulette numbers to from 1-36, also the two green zeroes 0 and 00,

Thus, there are 38 places on which the ball can land.

On first 36 numbers, 12 of them are divisible by 3. Also there are 26 numbers which are not divisible by 3.

The probability of a wager winning is: 12/38 or 6/19

Now the probability of a wager to loss is: 26/38 or 13/19

So for a 6/19 chance of winning $4 and a 13/19 chance of losing $2.

Therefore, the expected outcome is:

4 × 6/19 + -2 × 13/19 = 1.2632 - 1.3684 = -0.1052

The expected value comes up with a negative sign. Hence, he will lose money.

The players expectation is -0.1052

8 0
3 years ago
What is the volume of the cylinder shown below? A. 12157 units B. 3617 units C. 647 units D. 152 T units
Slav-nsk [51]

Answer:

D

Step-by-step explanation: the answer is D

4 0
3 years ago
6b.) Hence, or otherwise, evaluate g(f(3))
statuscvo [17]

Answer:

-25

Step-by-step explanation:

g(f(3))= g(-5)

=4(-5)-5

= -20-5

=-25

6 0
3 years ago
Read 2 more answers
The table shows the gallons of water in a pool over time.
Valentin [98]

Answer:

6 gallons per minute

Step-by-step explanation:

Let the function that models the quantities of water, Q (in gallons) in a pool over time, t (in minutes), is  

Q = a + bt ........... (1)

Now, Q(t = 0) is given to be 50 gallons.

So, a = 50 and b denotes the rate at which the quantity of water in the pool is decreasing and it is given by the slope of equation (1).

Now, two points on the graph are (0,50) and (1,44).

So, the slope = b =  = - 6 gallons per minute.

Therefore, the equation of this situation is given by Q = 50 - 6t, where the slope is equal to - 6 gallons per minute. (Answer)

6 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone help me!!!!!!!
    15·1 answer
  • Need help with my fractions I’m stuck on number 2.
    13·1 answer
  • Suppose that G(x)=F(x-2) + 7. which statement best compares the graph of G(x) with the graph of F(x)
    5·2 answers
  • In how many different orders can you line up 8 cards on a shelf
    7·1 answer
  • What is one twelfth as a percentage
    5·1 answer
  • A 12 ft ladder is placed 5 feet from a building. Approximately how high does the ladder reach? Round to the nearest tenth, if ne
    8·1 answer
  • Monica Perez $3000 in a savings account that pays 3.3% simple interest Manuel put $3000 in a savings account that pays 3.3 inter
    14·1 answer
  • How to solve p-10/-2=0
    14·2 answers
  • What perfect squares does the square root of 10 lie between
    9·1 answer
  • M(5,-10) is rotated 270 degrees what is M’?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!