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
Novosadov [1.4K]
3 years ago
9

What three simpler multiplications can you use to find 8 x 242?

Mathematics
1 answer:
vovangra [49]3 years ago
6 0
8*200
8*40
8*2
And then add up the answers and there you go
You might be interested in
An object is launched from a launching pad 144 ft. above the ground at a velocity of 128ft/sec. what is the maximum height reach
ollegr [7]

Answer:

18) a. h(x) = -16x² + vx + h(0) ⇒ h(x) = -16x² + 128x + 144

b. The maximum height = 400 feet

c. Attached graph

19) The rocket will reach the maximum height after 4 seconds

20) The rocket hits the ground after 9 seconds

Step-by-step explanation:

* Lets study the rule of motion for an object with constant acceleration

# The distance S = ut ± 1/2 at², where u is the initial velocity, t is the time

  and a is the acceleration of gravity

# The vertical distances h in x second is h(x) - h(0), where h(0)

   is the initial height of the object above the ground

∵ h(x) = vx + 1/2 ax², where h is the vrtical distance, v is the initial

  velocity, a is the acceleration of gravity (32 feet/second²) and x

  is the time

18)a.

∵ The value of a = -32 ft/sec² ⇒ negative because the direction

   of the motion

  is upward

∴ h(x) - h(0) = vx - (1/2)(32)(x²) ⇒ (1/2)(32) = 16

∴ h(x) = vx - 16x² + h(0)

∴ h(x) = -16x² + vx + h(0) ⇒ proved

* Find the height of the object after x seconds from the ground

∵ h(0) = 144 and v = 128 ft/sec

∴ h(x) = -16x² + 128x + 144

b.

* At the maximum height h'(x) = 0

∵ h'(x) = -32x + 128

∴ -32x + 128 = 0 ⇒ subtract 128 from both sides

∴ -32x = -128 ⇒ ÷ -32

∴ x = 4 seconds

- The time for the maximum height = 4 seconds

- Substitute this value of x in the equation of h(x)

∴ The maximum height = -16(4)² + 128(4) + 144 = 400 feet

c. Attached graph

19)

- The object will reach the maximum height after 4 seconds

20)

- When the rocket hits the ground h(x) = 0

∵ h(x) = -16x² + 128x + 144

∴ 0 = -16x² + 128x + 144 ⇒ divide the two sides by -16

∴ x² - 8x - 9 = 0 ⇒ use the factorization to find the value of x

∵ x² - 8x - 9 = 0

∴ (x - 9)( x + 1) = 0

∴ x - 9 = 0 OR x + 1 = 0

∴ x = 9 OR x = -1

- We will rejected -1 because there is no -ve value for the time

* The time for the object to hit the ground is 9 seconds

8 0
3 years ago
Y = (3x)2 + 17 <br> when x = 2
Andrew [12]

Answer:

y = 29

Step-by-step explanation:

y = (3x)2 + 17

y = (3(2))2 + 17

y = (6)2 + 17

y = 12 + 17

y = 29

8 0
2 years ago
A rectangle has a perimeter of 56 in. The length is four more than the width. What are the length and width of the rectangle
Aleks04 [339]

Answer:

Width = 12 in

Length = 16 in

Step-by-step explanation:

Let, the Width of the rectangle = w in

Now, the length of the rectangle = (w + 4) in

Now, Perimeter = 56 in

Also, we know that

Perimeter of the Rectangle = 2 (Length +Width)

or, 2 (Length +Width) = 56

⇒ 2(w + 4 +w) = 56

or, 4w =56 -8

width  = 12 in

So, Length = w + 4 = 12 + 4 = 16 in

7 0
3 years ago
Translate "a number is at least 32" into an inequality.
tino4ka555 [31]

Answer:

x\geq32

Step-by-step explanation:

"A number at least 32"

Let's use x as the number

x\geq32

Reason: at least means greater than or equal to

5 0
2 years ago
Cos 12° then sin = ?
d1i1m1o1n [39]
Cos 12 = sin (90 - 12) = sin 78
5 0
3 years ago
Other questions:
  • If the triangle shown in the diagram is translated 3 units right and 4 units down, what will be the coordinates of S’?
    8·2 answers
  • The difference between 2 numbers is 8. The sum of the two numbers is 20. Find the number. ​
    14·2 answers
  • 8
    9·1 answer
  • What is 3 2/9 * -1 5/7
    10·1 answer
  • If x=3 is the only x-intercept of the graph of a quadratic equation, which statement best describes the discriminant of the equa
    13·1 answer
  • Karen deposits $450 into a savings account which earns simple interest at a rate of 5% per year. She wants to keep the
    13·1 answer
  • A television program asks its viewers to visit a Web site to indicate their preference for two presidential candidates. 76% of t
    8·1 answer
  • Miguel has $30. He spends $6.00 on a movie ticket, $3.80 for snacks, and $1.00 for bus fare each way.
    7·2 answers
  • 2 1/4 x 10<br> please help &gt;_
    6·2 answers
  • Check the screenshot for the question. Please help ASAP.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!