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
Maksim231197 [3]
2 years ago
7

The function f(x) = -5x2 + 13x + 6 represents the height, in meters, of a

Mathematics
1 answer:
AnnZ [28]2 years ago
8 0

Answer:

D

Step-by-step explanation:

Differentiate the function and set it to zero:

f'(x) = -10x + 13

0 = -10x + 13

x = 1.3 seconds

Plug the x value into f(x):

f(1.3) = -5(1.3)^2 + 13(1.3) + 6 = 14.45 meters

You might be interested in
Write the equation in slope-intercept form. y = 6(x + 2) + 5x
sveticcg [70]

Answer:

y=11x+12

Step-by-step explanation:

y = 6(x + 2) + 5x

y=6x+12+5x

y=11x+12

in slope interception form=  y=mx+c

                                                y=11x+12

5 0
2 years ago
Read 2 more answers
Jenna wants to build 8 birdhouses. She needs 2 3/5 square feet of plywood for each birdhouse. If the plywood costs $0.56 per squ
goldenfox [79]

Answer:

$11.76

Step-by-step explanation:

We first need to find the amount of plywood for all birdhouses.

2 3/5 * 8 = 104/5 or 20.8 or 20 4/5

Now we can solve the cost for all the birdhouses by multiplying the total amount of plywood needed by the price per square foot.

20.8 * 0.56 = $11.648 or estimated $11.65

Remember, the question might be different, so don't submit anything yet. If the people who sell the plywood only sell in integer numbers (meaning you can't buy 4/5 of a square foot of wood but can only by amounts with no fractions), then Jenna must buy 21 square feet of plywood and will have a little bit of wood left over. Now solve just like before.

21 * 0.56 = $11.76

Therefore the answer is $11.76 if she can only buy an integer amount of plywood or estimated $11.65. I think the best answer is 11.76.

3 0
3 years ago
I NEED HELP!!! PLEASE ANSWER THESE QUESTIONS!
Tanya [424]
Okay just ask and I got you man
8 0
3 years ago
What is the reading on each of the scales??
kipiarov [429]
First number is length on map and second is the length in reality. Both are in kilometers.
5 0
3 years ago
What is the positive solution to the equation 0 = –x2 + 2x + 1? Quadratic formula: x = StartFraction negative b plus or minus St
Vladimir [108]

Answer:

See attached for a "Neat" quadratic formula.

a = -1

b = 2

c = 1

x = [-2 +- sqr root( 4 -4*-1*1)] / -2

x = [-2 +- sqr root( 4 -4*-1*1)] / -2

x = [-2 +- sqr root(8)] / -2

x1 = (-2 +2.8284271247)  / -2

x1 = .8284271247 / -2

x1 = -0.41421

x2 = (-2 -2.8284271247)  / -2

x2 = ( -4.8284271247)  / -2

x2 = 2.4142135624

So the equation has the positive solution of

2.4142135624

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • What is the sum of sqrt-2 and sqrt -18?
    7·2 answers
  • There are 26 students in your class. There are 4 more girls than boys. Use a system of linear equations to find how many boys ar
    5·1 answer
  • Find the point-slope equation for the line
    7·1 answer
  • Bubba weighs over 60 pounds. Write an inequality Plz help
    11·2 answers
  • Which graph represents the piecewise-defined function?
    11·1 answer
  • Anyone wanna help? plss
    15·2 answers
  • Help pleaseeee!!!!!!
    15·1 answer
  • HELP ILL GIVE 10 PTS quick pleaseee
    13·1 answer
  • Calculate each value for ⊙P. Use 3.14 for π and round to the nearest tenth.
    15·1 answer
  • Rabbits can exhibit a number of colors in their coats: black, white, tan, brown, red, and grey. A disease randomly kills off mos
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!