The **time **interval x >0.5 and x > 2.04 will the **tennis ball **be at least 15 feet above the **ground**.

Given that,

The **height **of a **tennis ball **tossed into the air is modeled by,

[tex]\rm h(x) = 40x - 16x^2[/tex]

Where x is **elapsed time **in seconds.

We have to **determine**,

During what **time **interval will the **tennis ball **be at least 15 feet **a**bove the **ground**?

**According **to the **question**,

The **height **of a **tennis ball **tossed into the air is modeled by,

[tex]\rm h(x) = 40x - 16x^2[/tex]

Where x is **elapsed time **in seconds.

Then,

When the **tennis ball **be at least 15 feet above the **ground**,

[tex]h(x) = 15[/tex]

**Substitute **the value of h(x) in the **equation**,

[tex]\rm h(x) = 40x - 16x^2\\\\ 15 = 40x - 16x^2\\\\ 16x^2-40x+15=0[/tex]

**Factorize **the equation for finding the **time interval **will the tennis ball be at least 15 feet above the **ground **is,

[tex]\rm 16x^2-40x+15= 0\\\\x = \dfrac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\x = \dfrac{-(-40)\pm \sqrt{(-40)^2-4 \times 16 \times 15}}{2 \times 16}\\\\x = \dfrac{-(-40)\pm \sqrt{1600- 960}}{32}\\\\x = \dfrac{40\pm \sqrt{640}}{32}\\\\x = \dfrac{40 + 25.29}{32} \\\\x = \dfrac{40 + 25.29}{32} \ and \ x = \dfrac{40 - 25.29}{32}\\\\x = \dfrac{65.29}{32} \ and \ x = \dfrac{14.71}{32}\\\\x = 2.04 \ and \ x = 0.45[/tex]

Hence, The **time **interval x >0.5 and x > 2.04** **will the **tennis ball **be at least 15 feet above the **ground**.

For more details about **Inequality **refer to the link given below.

https://brainly.com/question/17177510

what is the value of 3.5(11+1.9(11)+1.6(11)?

**Answer:**

The answer is 77

2.3² +9 × 4 ÷by 2

plz help

**Answer: 23.29**

**Step-by-step explanation:**

it is 23.29 because first you multiply 2.3 by 2 then you add 9 and multiply it by 4 then divide by two

What is the solution for the system of equations?

y = -x +4

y = x- 2

• (3, 1)

• (1, - 2)

• (-2, 1)

• (1, 3)

**Answer:**

1, 3

**Step-by-step explanation:**

// Solve equation [2] for the variable y

[2] y = x - 2

// Plug this in for variable y in equation [1]

[1] (x -2) + x = 4

[1] 2x = 6

// Solve equation [1] for the variable x

[1] 2x = 6

[1] x = 3

// By now we know this much :

y = x-2

x = 3

// Use the x value to solve for y

y = (3)-2 = 1

Shapes. I will give brainless answer correctly and tell me the number

**Answer:**

**It has to be 4 parts because it will to uneven if you cut diagonally. **

Determine whether the data in the table can be modeled by a linear equation. Explain.

If possible, write a linear equation that represents y as a function of x

**Answer:**

yes, because they're varying in a constante rate

y = -1/2x +3.5

Please help meee :( Just an answer

**Answer:**

p plus 6

**Step-by-step explanation:**

Divide £520 in the ratio 6:7

Start off by adding the ratio together.

6 + 7 = 13

Now we can divide 520 by 13 = £40

Answer = £40.

6 + 7 = 13

Now we can divide 520 by 13 = £40

Answer = £40.

The **ratio **of the **number **520 in 6: 7 will be 240: 280.

An **ordered pair **of numbers a and b, **represented **as a / b, is a ratio if b is not equal to 0. A **proportion **is an equation that sets two **ratios **at the same value. The **numerical **relationship between two **values** demonstrates how frequently one value **contains **or is **contained **within another.

Given that the **number **520 is **divided **into the ratio 6: 7.

The **number **in the ratio 6:7 will be **divided **as;-Let the **constant **term for the ratio is x now form an **equation **and solve.

6x + 7x = 540

13x = 540

x = 540 / 13

x = 40

6x = 40 x 6 = 240

7x = 7 x 40 = 280

Therefore, the **ratio **of the **number **520 in 6: 7 will be 240: 280.

To know more about** ratios and proportions** follow

https://brainly.com/question/12024093

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Find the slope of the line that passes through (84, 7) and (85, -25). Simplify your answer and write it as a proper fraction, improper fraction, or integer.

Answer: The slope is -32

Explanation:

Start with the slope formula:

m= (y2 - y1) / (x2 - x1)

Substitute point values in the formula

m = (-25 - 7) / (85 - 84)

Simplify each side of the equation

m= (-25 - 7) / (85 - 84) = -32/1

Solve for slope (m)

m= -32

need assistance with algebra 2

**Answer:**

**A. Quadratic, degree 2**

**Step-by-step explanation:**

The degree is found by simply finding the term with the power of, that is the highest. Which would be 2x**^2**. It is raised to the 2nd power, so the degree is 2.

A 4-oz. filet of salmon contains 500 mg of potassium. The daily recommended amount of potassium is 3,500 mg. If you ate a 6-oz. filet of salmon, what percent of your daily value did you eat of potassium?

A. 21%

B. 15%

C. 25%

D. 12%

The answer is 21% because a 6-oz fillet of salmon contains about 750 mg of potassium. 3500-750 equals 2750, meaning that whichever percent closest to that answer is correct. 3500 - 21% = 2760 which is the closest number to the correct percentage therefore A. Is the answer.

Use the function below to find f(-2)

F(x)=3x

**Answer:**

B

**Step-by-step explanation:**

Using the rule of exponents

[tex]a^{-m}[/tex] = [tex]\frac{1}{a^{m} }[/tex]

Then

f(- 2) = [tex]3^{-2}[/tex] = [tex]\frac{1}{3^2}[/tex] = [tex]\frac{1}{9}[/tex] → B

Please help me asap

tyyyyyyy :D

**Answer:**

7x + 2y = -6

**Step-by-step explanation:**

Multiply the equation with 2

2 ( y = -7x/2 - 3 )

2y = -7x - 6

7x + 2y = -6

Solve for y.

y + 3 = 8y + 3

y =

[tex]y + 3 = 8y + 3[/tex]

Subtract both sides **3**

[tex]y + 3 - 3 = 8y + 3 - 3[/tex]

[tex]y + 0= 8y + 0[/tex]

[tex]y = 8y[/tex]

Subtract both sides **y**

[tex]y - y = 8y - y[/tex]

[tex]0 = 7y[/tex]

Divide both sides by **7**

[tex] \frac{0}{7} = \frac{7y}{7} \\ [/tex]

[tex]y = 0[/tex]

There you go....

Ah

Have a great day ♡

i need answer for knoledge

**Answer:**

I couldn't understand what you actually mean. But, I -think you are trying to ask what is the meaning of Knowledge.

**HERE - (definition of knowledge)**

facts, information, and skills acquired by a person through experience or education; the theoretical or practical understanding of a subject.

Which bottle of water costs more per ounce: a 12

ounce bottle for $1.25 or a 16 ounce bottle for

$1.50?

I really need help with this!

**Answer:**

the second bottle

**Step-by-step explanation:**

To get the amount it costs per ounce, divide the amount of money by the number of ounces.

A water bottle that costs $1.25 for 12 ounces costs roughly 10 cents per ounce. A water bottle that costs about 9 cents per ounce.

therefore, the 16 ounce bottle is cheaper per ounce

What is the initial value of the equation shown?

y = −5x + 2

a

−5

b

−2

c

5

d

2

**Answer:**

Y = 2

**Step-by-step explanation:**

if you were looking for y's value

There are 70 students in the school band. 40% of them are sixth graders, 20% are seventh graders, and the rest are eighth graders.

1. How many band members are sixth graders?

band members

2. How many band members are seventh graders?

band members

3. What percentage of the band members are eighth graders?

**Answer:**

1=28 students 2=14students 3=40%

**Step-by-step explanation:**

**1.** 70 students = 100%

7 students = 10%

28 students = 40%

**28 students are sixth graders!**

**2.**70 students = 100%

7 students = 10%

14 students = 20%

**14 students are seventh graders!**

**3**.Percentage of band that is eighth graders: 40+20=60% 100%-60%=40%

**40% are eighth graders!**

Find the greatest common factor of the

following monomials:

18xy^ 30xy3

NO LINKS

Answer:

Step-by-step explanation:

6xy^3

Write a two-column proof.

I WILL GIVE BRAINLIEST TO BEST ANSWER! PLS HELP!

refer to images for question

MUST WRITE FULL PROOF

Proof:-

In ∆XYZ and ∆VWZ

[tex]\because\sf\begin{cases}\sf XZ\cong VZ(Given)\\ \sf YZ\cong WZ(Given)\\ \sf <XZY\cong <WZV(Opposite angles)\end{cases}[/tex]

Hence

∆XYZ[tex]\cong[/tex]∆VWZ(Side-Angle-Side)

pls help me answer this 12 to 15 questions

**Answer:**

**Step-by-step explanation:**

See attachment

12. -23C

13. 28.9% Loss

14. Diagram in the attachment. The sides can be calculated with the Pythagorean Theorem. Side = 3.61 cm

15. Use trig relationships. x = 5, y = 8.66

45. You decide to market your own custom computer software. You must invest $3,255 for

computer hardware, and spend $2.90 to buy and package each disk. If each program sells

for $13.75, write a system of equations and determine how many disks you must sell to

break even.

Your question was solved by a verified tutor on Brainly. Hope this helps!

PLEASEEE HELPPP I NEEDD HELPP WITH THISSS!

Answer: The answer is 27.04 square inches.

Explanation: The area of a square can be calculated by multiplying the length of a side by the length of a side.

**Answer:**

27.04 in^2

**Step-by-step explanation:**

hope this helps! :)

9. Which of the following is an example of the Commutative Property of Addition? (1 point)

O 12 + 4 = 4 + 12

O 12 + (3 + 2) = (12 + 3) + 2

O 2 + 7 + 0 = 2 +7

O 17+ (-17) = 0

V

10. If p = 8, evaluate 42+p:3. (1 point)

02.

03

06

08

Finish

Cancel

**Answer:**

9. the first one ( 12 + 4 = 4 + 12 )

**Step-by-step explanation:**

the commutative property of addition means that you can change the order of the numbers you add and the sum will still be the same. this is shown in the 12 + 4 = 4 + 12 because the order is switched, but they are still equal.

The **example** of the commutative property of addition is 12 + 4 = 4 + 12, the correct option is A.

**Algebra** is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for **Parenthesis**, Exponent, Multiplication, Division, **Addition**, and Subtraction. This approach is used to answer the problem correctly and completely.

We are given that;

The four options

Now,

The **commutative** property of addition states that changing the order of the addends does not change the sum.

This is the only option that shows the same sum with different orders of addends.

Therefore, by **algebra** the answer will be 12 + 4 = 4 + 12.

More about the **Algebra** link is given below.

brainly.com/question/953809

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Which lines of A, B, and C are perpendicular?

**Answer:**

a is perpendicular to both b and c; the product of the slopes a and b or a and c is -1

**Step-by-step explanation:**

perpendicular slopes multiplied by each other would be -1

-1/3 * 3 for a and both other lines is -1

that means a is perpendicular to both b and c

Nancy's nut shop sells cashews for $5.30 per pound and peanuts for $2.80. How many pounds of peanuts must be added to 20 pounds of cashews to make a mix that sells for $3.30 per pound?

**Answer:**

80 pounds

**Step-by-step explanation:**

let 'p' = pounds of peanuts to be added

20(5.3) + 2.8p = 3.3(20 + p)

106 + 2.8p = 66 + 3.3p

40 = 0.5p

p = 80

Nancy's nut shop sells cashews for $5.30 per pound and peanuts for $2.80. How many pounds of peanuts must be added to 20 pounds of cashews to make a mix that sells f

If total employee benefits are calculated as a percentage of their gross pay whitch of the following employees receive the largest percentage of their gross pay in employee benefits

The **employee **that receives the largest **percentage **of their **gross pay **in employee benefits is **Marcel. **

The percentage of **employee benefits **to total **gross pay **for each worker has to be determined.

Percentage = (total job benefits / gross pay) x 100

**Emily**: (33,600 / 32,600) x 100 = 103.07%

**Jack: **(34,700 / 33,700) x 100 = 102.97%

**Judy: **(33,900 / 33,400) x 100 = 101.5%

**Marcel: **(34,000 / 32,900) x 100 = 103.43%

A similar question was answered here: https://brainly.com/question/25764815

Please find attached a complete question

30% of the parks have a pool. If there are 9 parks with pools, how many parks are there altogether?

**Answer:**

30 parks

**Step-by-step explanation:**

9÷0.3=30 parks

Which equation is equivalent to

A=1/2bh?

A) H=2A/b

B) H= A/2b

C) H= A - 1/2b

D) H= 2A-b

**Answer:**

a

**Step-by-step explanation:**

Addy spent $ 15 on supplies to make giant sugar cookies and plans to sell them at her neigthorhood bake sale for $2 each . She wants her profit after paying back expenses to be a least $ a. What inequality vould represent this situation? bRepresent the solution on a number 'ine. How many cookies does she need to sell to make at least 20?

**Answer: **

**(1.25c) + (1p) ≥ 25**

**c is the amount of chocolate chip cookies**

**p is the amount of peanut butter cookies**

**Step-by-step explanation:**

Simplify 3x + 5y + 2x – 4y

**Answer:**

**Step-by-step explanation:**

**Conclusion:**

Therefore:

5x + yHoped this helped.

[tex]GeniusUser[/tex]

The **simplified **form of the given **expression **is 7x+y.

The given expression is 3x+5y+2x-4y.

An expression is a combination of **terms **that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.

Group the like terms and simplify, we get

(3x+2x)+(5y-4y)

= 7x+y

Therefore, the simplified form of the given **expression **is 7x+y.

To learn more about an **expression **visit;

https://brainly.com/question/28170201.

#SPJ4

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Each of the 14 students in the art club needs 4 1/4 ounces of paint for a project. The art store sells paint only in 8 ounce bottles. How many bottles of paint does the art club president need to buy for the project?A - 3B - 4C - 7D - 8
4. Economists measure opportunity costA. only when it is on the margin.B. as the best thing given up.C. as the sum of all forgone opportunities.D. as the same as marginal benefit.
Emma and her 3 friends were thirsty so she shared 1/2 gallon of lemonade equally among 4 people. How much did each purdon get1/8 1/41/24
Please help, I will give good rating and brainliest of possible!!Thank you!!!!!!!!
Pls answer these two questions
14b = 56i need help figuring out what this is i'm doing it but i keep getting it wrong please help
Which of the following identifies the central idea of the text?A- Mushikiwabo believes it is best for Rwanda to forget its history with genocide, as too many people were involved to hold anyone truly accountable.B- Rwanda has recovered from the genocide extraordinarily well, but creating a stable future is difficult due to the number of people who participated and the damage done.C- While the state was influential in promoting the genocide, Mushikiwabo holds the people primarily responsible, as they carried out the killing of their neighbors.D- While the Rwanda's economy has recovered from the effects of the genocide, the government continues to be corrupt and unstable.
Select the correct answer.Which response best completes the conversations?Violeta: Emily, qu transporte pblico es el que ms te gust?Emily:OA.Me gusto el bus, porque es rpido y me da independencia.OB.Me gust la bicicleta, porque tiene muchos asientos.OC.Me gust el metro porque evitas el trfico de las calles.OD.Me gusto el taxi, porque se llena de pasajeros.Reset
The penalty box on a soccer field extends54 ft from the goal line. The line where aplayer gets to take a penalty kick is 12 yardsfrom the goal line. What is the ratio of thedistance from the goal line and where aplayer takes a penalty kick?
A motorcycle can travel 60 miles per gallon. Approximately how many gallons of fuel will the motorcycle need to travel 40 km? [1 mile = 1. 6 km] 0. 04 0. 08 0. 20 0. 42.
if each quadrilateral below is a rectangle, find the missing measures.
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Write 3 compound- complex sentences about friendship.
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Create your own example for each cases of multiplyingpolynomials Case 1: Distributive PropertyCase 2: FOIL MethodCase 3: Binomial to PolynomialPls needed badly If you have nothing to answer dont answer
How i can answer this question, NO LINKS, if you answer correctly i will give u brainliest!
Help me please just help I need help rn like rn
HELP PLSSSS ILL REWARD BRAINLIEST!!!
1. Three students are using sports equipment to model the relative motion ofEarth, the moon and the sun.A. Identify which ball would be used to model the Sun, Earth and the MooB. Describe the relative (in relation to each other) motions of these bodies