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
zysi [14]
3 years ago
7

Plzzz help last test of the year marking brainliest

Mathematics
1 answer:
Zigmanuir [339]3 years ago
4 0

Answer:

108

Step-by-step explanation:

You might be interested in
Anyone have any idea? i dont have any idea
ladessa [460]

Answer:

\tt f(x)=2x^2+20x-10

let y=f(x)

\tt y=2x^2+20x-10

\tt 2x^2+10x=y+10

\tt x^2+10x=\frac{1}{2} y+5

\tt x^2+10x+25=\frac{1}{2} y+30

\tt (x+5)^2=\frac{1}{2} (y+60)

\tt 2(x+5)^2=f(x)+60

\boxed{\tt f(x)=2(x+5)^2-60}

Hope it helps! :)

8 0
2 years ago
The cosine equation for a function that has a period of 4 straight pi and an amplitude of 8
lara [203]

Answer:

y=4sin[2(x−π2)]−6

Step-by-step explanation:

The standard form of a sine function is

y=asin[b(x−h)]+k

where

•a : is the amplitude,

•2π/b : is the period,

•h : is the phase shift, and

•k : is the vertical displacement.

We start with classic

y=sinx :

graph{(y-sin(x))(x^2+y^2-0.075)=0 [-15, 15, -11, 5]}

(The circle at (0,0) is for a point of reference.)

The amplitude of this function is

a=1 .To make the amplitude 4, we need

a to be 4 times as large, so we set

a=4

.

Our function is now

y=4sinx ,and looks like:

graph{(y-4sin(x))(x^2+y^2-0.075)=0 [-15, 15, -11, 5]}

The period of this function—the distance between repetitions—right now is

2π , with b=1

.To make the period π , we need to make the repetitions twice as frequent, so we need

b=normal period/desired period

=2π/π=2

.

Our function is now

y=4sin(2x), and looks like: graph

{(y-4sin(2x))(x^2+y^2-0.075)=0 [-15, 15, -11, 5]}

This function currently has no phase shift, since

h=0

. To induce a phace shift, we need to offset

xby the desired amount, which in this case is

π2 to the right. A phase shift right means a positive

h, so we set

h = π2

.

Our function is now

y=4sin[2(x−π2)] , and looks like:graph

{(y-4sin(2(x-pi/2)))((x-pi/2)^2+y^2-0.075)=0 [-15, 15, -11, 5]}

Finally, the function currently has no vertical displacement, since

k=0

.To displace the graph 6 units down, we set

k=−6

.

Our function is now

y=4sin[2(x−π2)]−6, and looks like:graph {(y-4sin(2(x-pi/2))+6)((x-pi/2)^2+(y+6)^2-0.075)=0 [-15, 15, -11, 5]}

6 0
3 years ago
If Christopher consumed 600 calories by drinking x number of sodas, which expression represents the number of calories in each s
stiv31 [10]
<span>Number of calories in each soda</span>:
\dfrac{600}{x}
3 0
3 years ago
Read 2 more answers
What's the value of 8 + (-7)
Maru [420]

Answer:

the answer is 1

Step-by-step explanation:

3 0
3 years ago
Sela's piano lesson starts at 4:45 pm the lesson is 30 minutes long when does her lesson ends
Vadim26 [7]
5:15 PM because adding 15 minutes gets you to 5:00 then another 15 gets you to 5:15
3 0
3 years ago
Read 2 more answers
Other questions:
  • How many feet is in a inch?
    6·2 answers
  • Which equation has the same solution as x^2-6x-14=0
    5·2 answers
  • The number of bacteria, b, in a refrigerated food is given by the function b(t) = 15t2 − 60t + 125, where t is the temperature o
    6·1 answer
  • Find the zeros of the function. f(x)=-3x^2+75
    14·2 answers
  • Translate and simplify the expression the sum of fifteen and a number plus twelve
    13·1 answer
  • Help plz !!!!!!!!!!!!!!!!! These are so hard
    14·1 answer
  • JN is ? between angle J and angle <br>K
    11·1 answer
  • This afternoon Darren left school, rode the bus 1/2 of a mile, and then walked 1/4 of a mile to get home. How much farther did D
    6·2 answers
  • A pet store has two types of betta fish ref betta fish and blue betta fish a customer notices that 7 out of 12 betta fish in the
    10·1 answer
  • G=A/4 <br><br><br>fous on a please<br>​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!