MATHEMATICS HIGH SCHOOL

Can someone help please!!
find the maximum value of function f(x) = -1.1x^2 - 3.6x + 1

Answers

Answer 1
Answer:

Step-by-step explanation:

everything can be found in the picture

Related Questions

Which of the following statements is true of a reflection? Select all that apply. It is an isometry. It slides a plane. The transformation is done over a line of reflection. It flips a plane about a fixed line. It changes the size of the figure being reflected.
What is the name of an interior angle of a triangle that is not adjacent to a given exterior angle of the triangle? A. exterior angle B. adjacent interior angle C. remote interior angle D. alternate interior angle
I need help on these thanks
What is 6*5+9=x? PLZ HELP
In a group of 31 students, 7 study both Art and Biology.14 study Biology but not Art.7 study neither subject.Given that a randomly selected student studies Art, what is the probability the student studies Art and Biology?

Use the following frequency distribution to determine the midpoint of the second class.A. 17.0

B. 19.5

C. 16.5

D. 18.5

Answers

Class         Frequency    Mid-point
13-15           7            13+15/2=20.516-18           4            16+18/2=1719-21           3            19+21/2=2022-24           5            22+24/2=2325-27           7            25+27/2=2628-30           7            28+30/2=29

(16+18)/2 = 17
So, the answer is A (17).

I know that y=20 and x=50 but will someone explain how to get them. Thanks!

Answers

given that A and B are parallel, you can conclude that 30 = x - y since they are corresponding angles. Also you can conclude that 5y = 2x since they are alternate interior angles. At this point, there is a solvable system of equations set up

30 = x - y

5y = 2x


Now, you must isolate a variable so let's isolate x from the 1st equation. so u just need to add y to both sides, getting x = 30 + y. Now you plug that into the 2nd equation and solve for y. 5y = 60 + 2y. Subtract 2y from both sides. 3y = 60. Divide by 3, y = 20.

Now with your y value, just plug back into original equation (the 1st one). 30 = x - 20. Solve for x by adding 20. X = 50

Connecting a DVD player to a television set requires a cable with special connectors at both ends. You buy a six-foot cable for $15.50 and a three-foot cable for $10.25. Assuming that the cost of a cable is the sum of the cost of the two connectors and the cost of the cable itself, what is the cost of a four-foot cable?

Answers

so a 3 foot cable is10.25
a 6foot cable is 15.50
so
x=cost per foot
y=cost of special connectors
3x+y=10.25
6x+y=15.50
make first equation negative and add to the first
3x=5.25
divide both sides by 3
1.75=x
so it costs 1.75 for a foot of cable

subtitue into first equation
3(1.75)+y=10.25
5.25+y=10.25
subtract 5.25 from both sides
y=5 dollars=cost of special so
4x+y=4(1.75)+5=7+5=$12

so the cost of a 4 foot cable is $12

Find the area of the triangle

Answers

Answer:I would say 120 but I will further look into

Step-by-step explanation:

Patrick owns an apartment building. He knows that the money he earns in a month depends on the rent he charges. The relationship can be modelled by E=1/50R(1650-R), where E is Patrick's monthly earnings, in dollars, and R is the amount of rent, in dollars, he charges each tenant. if Patrick wants to earn at least $13000, between what two values should he set the rent?

Answers

E=13,000 andE=1/50R(1650-R)


0.02R(1650-R)=13000

(0.02R)(1650)-0.02R²=13000

0.02R²-33R+13000=0

R2-1650R+650000=0

SOLVE W QUAD FORMULA

What is 2% of $230,000

Answers


if you set it up to cross multiply you do 230,000*2=460,000

then you divide by 100 and get your answer of 4600$
2% of 230000
we make the 2% to deckmal
.02 * 230000
=4600
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I need help filling out the boxes because I'm not understand the pattern going on.