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
Leona [35]
2 years ago
6

PLEASE ANSWER THIS CORRECTLY I WILL GIVE YOU BRAINLIEST IF ITS CORRECT. I NEED THIS, I CANT DO ANYTHING FOR CHRISTMAS IF I FAIL

THIS.

Mathematics
1 answer:
Sophie [7]2 years ago
7 0

Answer:

1 is 50 min

Step-by-step explanation:

big brain

You might be interested in
At the school football game, there are 42 adults
galina1969 [7]

Answer:

54 students

Step-by-step explanation:

42 / 7 = 6

9 x 6 = 54

42 : 54 = 7 : 9

4 0
2 years ago
What algebraic expression is a product with a factor of 5
USPshnik [31]

Answer:

y=5x

Step-by-step explanation:

A product means multiplication, and you need to multiply x by 5 in order to make the product have a factor of 5.

4 0
2 years ago
How many cakes can you make having 3 2/3 cups of flour,if for one cake you need 1/3 cup of flour?​
shutvik [7]

Answer:

11 cakes

Step-by-step explanation:

so you know each cup can make 3 cakes so multiply that by 3 then add 2(from the 2/3 cups)

6 0
3 years ago
Read 2 more answers
What is 64 x 51.64 / x?
Bumek [7]
X=. Cfhmcfhjcfhmxcbncfhmcfhncfhmcghmcfhmcfhmcfhm
3 0
3 years ago
The function h(t) = −5t2 + 20t shown in the graph models the curvature of a satellite dish: graph of parabola starting at zero c
ipn [44]

Answer:

Part 1) Option B: 0 ≤ x ≤ 4

Part 2) Option C: (5x − 1)(2x − 3)

Part 3) Option C: The crop yield decreased by 10 pounds per acre from year 10 to year 20.

Part 4) Option B: f(x) = (2x + 1)(2x − 1)

Part 5) Option A: The company earned 85 billion dollars in 2008

Part 6) Option C: (3, 0) and (5, 0)

Step-by-step explanation:

Part 1) we have

h(t)=-5t^{2}+20t

This is a vertical parabola open downward

The vertex is a maximum

The x-intercepts are the points (0,0) and (4,0)

The vertex is the point (2,20) ---> The x-coordinate of the vertex is the midpoint of the x-intercepts

so

The domain is the interval ----> [0,4]

0\leq t\leq 4

The range is the interval ----> [0,20]

0\leq h(t)\leq 20

Part 2) we have

V=10x^{2} -17x+13

where

x is the time in minutes

V is the volume in gallons

we know that

When the trough is empty, the volume is equal to zero

so

For V=0

10x^{2} -17x+3=0

The formula to solve a quadratic equation of the form

ax^{2} +bx+c=0

is equal to

x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}

in this problem we have

10x^{2} -17x+3=0

so

a=10\\b=-17\\c=3

substitute in the formula

x=\frac{-(-17)(+/-)\sqrt{-17^{2}-4(10)(3)}} {2(10)}

x=\frac{17(+/-)\sqrt{169}} {20}

x=\frac{17(+/-)13} {20}

x=\frac{17(+)13} {20}=\frac{3}{2}

x=\frac{17(-)13} {20}=\frac{1}{5}

so

10x^{2} -17x+3=10(x-\frac{3}{2})(x-\frac{1}{5})

simplify

10(x-\frac{3}{2})(x-\frac{1}{5})=(2x-3)(5x-1)

Part 3) we have

f(x)=-x^{2}+20x+100

we know that

To find the average rate of change, we divide the change in the output value by the change in the input value

the average rate of change is equal to

\frac{f(b)-f(a)}{b-a}

In this problem we have

f(a)=f(10)=-(10)^{2}+20(10)+100=200  

f(b)=f(20)=-(20)^{2}+20(20)+100=100  

a=10

b=20

Substitute

\frac{100-200}{20-10}

-\frac{100}{10}=-10  ----> is a decreasing function

therefore

The crop yield decreased by 10 pounds per acre from year 10 to year 20.

Part 4) we have

f(x)=4x^{2} -1

<em>Find out the x-intercepts</em>

Remember that the x-intercepts are the values of x when the value of the function is equal to zero

so

For f(x)=0

4x^{2} -1=0

Solve for x

4x^{2}=1

x^{2}=\frac{1}{4}

take square root both sides

x=(+/-)\frac{1}{2}

so

f(x)=4x^{2} -1=4(x-\frac{1}{2})(x+\frac{1}{2})=(2x-1)(2x+1)

Part 5) we have

t^{2}+14t+85

Remember that

The y-intercept of a function is the value of the function (output value) when the value of x (input value) is equal to zero

In this problem

The expression represent a company's net sales, in billions, from 2008 to 2018

t is the number of years since the end of 2008

so

For t=0 -----> represent the end of 2008

(0)^{2}+14(0)+85=85\ billion\ dollars

therefore

The company earned 85 billion dollars in 2008.

Part 6) What are the x-intercepts of the parabola?

we have the points (2,3),(4,-1),(6,3)

This is a vertical parabola open upward

The vertex represent a minimum

In this problem the vertex is the point (4,-1)

The equation of a vertical parabola in vertex form is equal to

y=a(x-h)^2+k

where

a is a coefficient

(h,k) is the vertex

we have

(h,k)=(4,-1)

substitute

y=a(x-4)^2-1

take the point (2,3) and substitute in the quadratic equation to solve for a

For x=2, y=3

3=a(2-4)^2-1

3=4a-1

4a=4

a=1

The quadratic equation is

y=(x-4)^2-1

Find out the x-intercepts

Remember that the x-intercepts are the values of x when the value of the function is equal to zero

so

For y=0

(x-4)^2-1=0

Solve for x

(x-4)^2=1

take square root both sides

(x-4)=(+/-)1

x=4(+/-)1

x=4+1=5\\x=4-1=3

therefore

The x-intercepts are the points (3,0) and (5,0)

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the answer for 39 40 36 37 33 34
    8·2 answers
  • The answer to this problem for my hw
    7·1 answer
  • What is the solution to x -2&lt;10
    12·1 answer
  • Whats the area of a triangle with a base length of 3 units and a height of 4 units
    8·1 answer
  • What is the best way to get my answers?
    11·1 answer
  • What is the image point of ( -8,3) after a translation right 2 units and up 3 units? Submit Answer attempt out of 2 N​
    11·1 answer
  • Please help me thanks
    15·2 answers
  • Insert commas as needed, and then write the number in words 984200
    7·2 answers
  • Who drove the fastest?
    14·1 answer
  • Another one, PLEASE help
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!