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
DochEvi [55]
2 years ago
13

Please help, I can't figure this out.

Mathematics
1 answer:
nataly862011 [7]2 years ago
4 0

Answer:

5 seconds

Step-by-step explanation:

When the rocket is on the ground, then h = 0 , that is

- 6t² + 30t = 0 ← factor out - 6t from each term

- 6t(t - 5) = 0

Equate each factor to zero and solve for t

- 6t = 0 ⇒ t = 0 ← when rocket is launched

t - 5 = 0 ⇒ t = 5 ← time when rocket returns to ground

You might be interested in
Triangle ABC is an equilateral triangle.Find the angle of rotation that maps A to B
svet-max [94.6K]

The sum of the inner angles of any triangle is always 180°, i.e. you have


\alpha + \beta + \gamma = 180


In the particular case of an equilater triangle, all three angles are the same, so

\alpha = \beta = \gamma


and the expression becomes


\alpha + \beta + \gamma = \alpha + \alpha + \alpha = 3\alpha = 180


which implies \alpha = 60


So, if you rotate the triangle with respect to its center by 60 degrees, the triangle will map into itself. In particular, if you want point A to be mapped into point B, you have to perform a counter clockwise rotation of 60 degrees with respect to the center of the triangle.


Of course, this is equivalent to a clockwise rotation of 120 degrees.


Finally, both solutions admit periodicity: a rotation of 60+k360 degrees has the same effect of a rotation of 60 degrees, and the same goes for the 120 one (actually, this is obvisly true for any rotation!)

3 0
3 years ago
1. FRUITS Find the ratio of bananas to oranges in the graphic at the right. Write the
podryga [215]

Answer:

999kkk b8llion

Step-by-step explanation:

iiuugghhgvvjhhffffffffffffffggttgggg

7 0
3 years ago
If the square of the hypotenuse of an isosceles right triangle is 98cm2 find the length of each side
Marrrta [24]

Answer:

7

Step-by-step explanation:

Let the each leg be x so,

√(x²+x²)=√98

or, √(2x²)=√98

or, x√2=7√2

or, x=7

3 0
2 years ago
Add the following polynomials
Yuri [45]

Answer is x² + 2x + 5

<u>Step-by-step explanation:</u>

Step 1:

Add the two polynomials

⇒ (2x + 7) + (x² - 2) = 2x + 7 + x² - 2 = x² + 2x + 5

3 0
3 years ago
Read 2 more answers
Help on this please?
Anna [14]

Answer:

angle 1 should equal to 54.

angle 2 should equal to 126.

Step-by-step explanation:

2x - 8 + 4x + 2 = 180

2x + 4x - 8 + 2 = 180

6x - 6 = 180

6x - 6 + 6 = 180 + 6

6x = 186

6x ÷ 6 = 186 ÷ 6

x = 31

---------------------------------------------

2x - 8 = A1

2(31) - 8 = A1

62 - 8 = A1

54 = A1

-----------------------------------------------

4x + 2 = A2

4(31) + 2 = A2

124 + 2 = A2

126 = A2

7 0
3 years ago
Other questions:
  • Work out the height of a parallelogram with base of 6cm and area of 27cm²
    6·1 answer
  • Sarah and George went on hiking trip over the weekend to Mt.Shasta. On Saturday they hiked 9/12 mile. On Saturday they hike 4/12
    14·1 answer
  • Multiply. Write a the product as a mixed number
    6·1 answer
  • 9 is 18% of what number?
    15·1 answer
  • June spent $78.91 on her pizza at Mellow Mushroom. She spent $6.65 on her drinks. How much more did she spend on pizza than drin
    13·1 answer
  • Can you answer this for me?
    12·2 answers
  • You work for a waste removal company. The trailer of one of your dump trucks is 10 feet wide, 15 feet long, and 6.5 feet high. I
    14·2 answers
  • Which equation represents the graph?
    12·2 answers
  • I need help and would greatly appreciate anyone who could help me ): !
    5·1 answer
  • Bottles of water sell for $1.50 each.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!