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
timurjin [86]
3 years ago
5

A crew you’re supervising is installing a circular patio. In order to purchase the materials, they need to compute the area. The

plans call for a diameter of 12 yards. The crew figures the area of the patio will be 37.68 square yards. Did the crew calculate the area correctly? If not, why?
Mathematics
2 answers:
lawyer [7]3 years ago
8 0

Answer:

it would be 37.69 square yards the answer that was given is off by .01

Step-by-step explanation:

you multiply 12 times pi (3.14) = 37.69

Ainat [17]3 years ago
4 0

Answer:

No, they calculated circumference instead of the area.

Step-by-step explanation:

3.14 • 12 = 37.68

You might be interested in
the initial vertical velocity of a rocket shot straight up is 42 meters per second. How long does it take for the rocket to retu
Snowcat [4.5K]
It takes 4.3 seconds for the rocket to return to earth.

The equation is:
0=-9.8t^2+v_0t+h_0
where -9.8m/sec² is the acceleration due to gravity, v₀ is the initial velocity, and h₀ is the initial height.  We will go from the assumption that the rocket is launched from the ground, so h₀=0, and we are told that the initial velocity, v₀, is 42.  This gives us:

0=-9.8t^2+42t

We will use the quadratic formula to solve this.  The quadratic formula is:
x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

Plugging in our information we have:
t=\frac{-42\pm \sqrt{42^2-4(-9.8)(0)}}{2(-9.8)}
\\
\\=\frac{-42\pm \sqrt{1764-0}}{-19.6}
\\
\\=\frac{-42\pm \sqrt{1764}}{-19.6}
\\
\\=\frac{-42\pm 42}{-19.6}=\frac{-42-42}{-19.6} \text{ or } \frac{-42+42}{-19.6}
\\
\\=\frac{-84}{-19.6}\text{ or }\frac{0}{-19.6}
\\
\\=4.3\text{ or }0

x=0 is when the rocket is launched; x=4.3 is when the rocket lands.
8 0
3 years ago
Solve the system <br> {f (x) = 2x-1<br> {g (x) = x^2-4
Murrr4er [49]

Answer:

2 sets of possible solutions:

x=3, y = 5

and

x=-1, y = -3

Step-by-step explanation:

Using the graphical method, (see attached)

you can graph both equations and find their intersection points.

From the attached plot, you can see that the graphs intersect at (3,5) and (-1,-3)

Alternatively, you can solve this numerically by solving the following system of equations. You will get the same answer.

y = 2x + 1 ------------------- eq. (1)

y = x² - 4 ------------------- eq. (2)

4 0
3 years ago
You start driving north for 16 miles, turn right, and drive east for another 30 miles. At the end of driving, what is your strai
Maru [420]

The distance between starting and ending point is 34 miles.

Step-by-step explanation:

Given,

Car moves 16 miles to north then 30 mile to east.

It forms a right angle triangle.

The straight line distance from starting to ending point represents hypotenuse.

To find the distance between starting and ending point.

Formula

By <em>Pythagoras theorem,</em>

h² = b²+l² where h is the hypotenuse, b is base and l is the another side.

Taking, b=16 and l=30 we get,

h² = 16²+30²

or, h = \sqrt{256+900}

or, h = \sqrt{1156} = 34

Hence,

The distance between starting and ending point is 34 miles.

5 0
3 years ago
The large pizza is 16 inch what the circumference plz help
tatuchka [14]

Answer:

50.265 inches

Step-by-step explanation:

4 0
3 years ago
Annie wants to make several plates of apples apricots, so that each plate has the same number of apples and the same number of a
Vilka [71]

Answer:

Annie can make 4 plates with 8:4=2 apples and 20:4=5 apricots on each plate.

Step-by-step explanation:

Annie has  8 apples and 20 apricots.

Factor these numbers:

8=2\cdot 4=2\cdot 2\cdot 2\\ \\20=2\cdot 10=2\cdot 2\cdot 5

Find GCF(8,20):

GCF(8,20)=2\cdot 2=4

Hence, Annie can make 4 plates with 8:4=2 apples and 20:4=5 apricots on each plate.

3 0
3 years ago
Other questions:
  • a school band gives a year end concert. it is held in a 400 seat auditorium. each convert ticket sells for $10, and 85% of the t
    11·1 answer
  • A video game sets the points needed to reach the next level based on the function g(x) = 8(2)x + 1, where x is the current level
    8·1 answer
  • Please help me with this math problem
    8·2 answers
  • yolanda bought a new car for 8,000 . she knows that if she takes good care of the car , its value will decrease by only10% each
    8·1 answer
  • How many solutions exist for the given equation?
    13·1 answer
  • Help! I’ll give you the best rating
    14·1 answer
  • Pls pls pls pls help me answer this fast
    10·2 answers
  • Use the associative property of addition to write an expression equivalent to n + (d + p)
    9·1 answer
  • What is the probability of picking 1 orange shirt out of 8
    15·1 answer
  • Find fractional notation 5.6%
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!