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
daser333 [38]
3 years ago
5

An object is launched from a platform. Its height (in meters), xxx seconds after the launch, is modeled by h(x)=-5(x+1)(x-9)h(x)

=−5(x+1)(x−9)h, left parenthesis, x, right parenthesis, equals, minus, 5, left parenthesis, x, plus, 1, right parenthesis, left parenthesis, x, minus, 9, right parenthesis How many seconds after launch will the object hit the ground?
Mathematics
2 answers:
Colt1911 [192]3 years ago
4 0

Answer:

IT'S 9 SECONDS!!!!

Step-by-step explanation:

i got it wrong by 45 and when i put in 9 it was right

larisa [96]3 years ago
3 0

Answer:

The object will hit the ground after <u>9 seconds</u>.

Step-by-step explanation:

Given:

The height 'h' of an object varies with time 'x' as:

h(x)=-5(x+1)(x-9)

Now, we are asked to find the time 'x' when the height reaches ground after launch.

So, the height of the object on reaching ground will be 0 m. So, substituting 0 for 'h' and solving for 'x', we get:

0=-5(x+1)(x-9)\\\\\frac{0}{-5}=(x+1)(x-9)\\\\(x+1)(x-9)=0\\\\x+1=0\ or\ x-9=0\\\\x=-1\ or\ x=9

Therefore, there are two values of 'x' for which height is 0. The negative value is ignored as time can't be negative.

So, the value of 'x' is 9 seconds.

Hence, the object will hit the ground after 9 seconds.

You might be interested in
What is -1 11/12 in it’s simplest form
Dafna1 [17]

Answer: - 23/12

decimal -1.916

Step-by-step explanation:

3 0
3 years ago
How is factor 36 related to factor 72
Lady bird [3.3K]

Answer:by 2

Step-by-step explanation:

8 0
3 years ago
Simone invests 1200 into two savings accounts. One account earns 4% annual interest and the other earns 5.9% annual interest. At
Allisa [31]

Answer: He invested $350 at 4% and $850 at 5.9%

Step-by-step explanation:

Let x represent the amount which he invested in the account earning 4% interest.

Let y represent the amount which he invested in the account earning 5.9% interest.

Simone invests 1200 into two savings accounts. One account earns 4% annual interest and the other earns 5.9% annual interest. This means that

x + y = 1200

The formula for determining simple interest is expressed as

I = PRT/100

Considering the account earning 4% interest,

P = $x

T = 1 year

R = 4℅

I = (x × 4 × 1)/100 = 0.04x

Considering the account earning 5.9% interest,

P = $y

T = 1 year

R = 5.9℅

I = (y × 5.9 × 1)/100 = 0.059y

At the end of 1 year, Simon earned 64.15 in interest. it means that

0.04x + 0.059y = 64.15 - - - - - - - - -1

Substituting x = 1200 - y into equation 1, it becomes

0.04(1200 - y) + 0.059y = 64.15

48 - 0.04y + 0.059y = 64.15

- 0.04y + 0.059y = 64.15 - 48

0.019y = 16.15

y = 16.15/0.019

y = 850

x = 1200 - y = 1200 - 850

x = 350

7 0
3 years ago
-3(4x+5) please help<br>​
Natasha_Volkova [10]
Answer:
-12x-15
explanation:
you multiply -3 by 4x, gives u -12x and then you multiply -3 by 15 which gives you -15
then you put it in an equation
-12x-15
7 0
3 years ago
Write the equation of the graph in slope intercept form​
creativ13 [48]

Answer:

To write a slope-intercept equation from a graph, find the point where the graph crosses the y-axis, b, and the slope, m, and plug them into the equation y=mx+b.

Step-by-step explanation:

3

6 0
3 years ago
Read 2 more answers
Other questions:
  • How to do an angle of impact ​
    7·1 answer
  • Let f(x)=x-2 and g(x)=x^2-7x-9 find f(g(-1))
    5·1 answer
  • Suppose you are given an allowance of $1 the first week of the year, and each week your allowance doubles. That is, $1 the first
    8·1 answer
  • You have four credit cards. Each has a balance of $950.00, but their credit limits are $1,200.00, $2,200.00, $2,400.00, and $3,0
    5·2 answers
  • A square root function, that is stretched by a factor of 3, and shifted 4 units left and 6 units up.
    14·1 answer
  • Evaluate m2 if m = 5 answer
    9·2 answers
  • a study of 1,400 cats revealed that 18 out of every 210 cats in the population have black hair. based on the results of the stud
    7·1 answer
  • Slove for x<br> Show all work
    15·2 answers
  • Find an expression for the number in the nth term pattern of the sequence.<br> 4 , 7 , 12, 19
    11·1 answer
  • If the graph passes the horizontal-line test, then the function is one-to-one. Functions that are one-to-one have inverses that
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!