an arrow is horizontally projected from the top of a tower with an initial velocity of 18m/s if it reaches the ground 7s later, calculate the height of the tower (take g=10m/s²)​

Answers

Answer 1

Answer:

x[f]=at^2/2+v[i]t+x[i]

Brackets dennote a subscript.

You're given x[f], a, t,and v[i]. You can just plug in their values into the formula and solve for x[i]. The horizontal velocity is irrelevant, the height of the tower is the initial position of the arrow, and final position is gonna be when it reaches the ground,or 0.


Related Questions

-1 over 8 in decimal form

Answers

Answer:

0.125 is the answer of 1/8

Hey there!

“ -1 over 8”

= -1/8

= -1 ÷ 8

= -0.125

Therefore, your answer is: -0.125

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

Guide:

2 negatives = positive

1 negative & 1 positive = negative

2 positives = positive

1 positive & 1 negative = negative

what is the square root of -99

Answers

Answer:

3i√11

I believe that’s the square root

Please help!


Which of the following points is located in Quadrant IV?
(-5,2)
(4,3)
(1, -4)
(-6, -7)

Answers

Answer:

(1,-4) is in quadrant IV.

Step-by-step explanation:

Linda's bedroom door is 9 feet tall and 4 feet wide. A new door would cost $4.89 per square foot. How much would a new bedroom door cost in total.

Answers

Answer:

I'm not sure, but I think it's $176.4

Step-by-step explanation:

9x4= 36

36= Square foot

36 x 4.89= 176.4

Answer:

36

Step-by-step explanation:

1.If you invest $100 at an interest rate of 15%, how much will you have at the end of 8 years?

Answers

Answer:

$1500 is the answer para po maka tulong ako

Step-by-step explanation:

sana maka tulong

A. What is the rate of change of this graph?

B. What does the rate of change represent?

Answers

Answer:

A. The rate of change of this graph is 3

B. The rate of change represent 3 Souvenirs are purchased in one day of vacation.

Step-by-step explanation:

A. By looking at the graph the x axis is changing by 1, and the y axis is chaning by 3 so the rate of change is 3.

B. The rate of change is 3 means 3souvenirs are purchases in 1 day of vacation.

Solve for slope-intercept
y + 2 = 1/2 (x - 4)

Answers

Answer:

y = ½x - 4

Step-by-step explanation:

Given the linear equation in point-slope form, y + 2 = ½(x - 4):

To transform the equation into its slope-intercept form, y = mx + b:

y + 2 = ½(x - 4)

Distribute ½ into the parenthesis:

y + 2 = ½x - 2

Subtract 2 from both sides:

y + 2 - 2 = ½x - 2 - 2

y = ½x - 4 ← This is the slope-intercept form.

Jim's piano lessons are 30 minutes
longer than Suzanne's clarinet
lessons, Suzanne's clarinet lessons
are one-third the length of Pedro's
guitar lessons. If Pedro's guitar
lessons are 60 minutes long, how long
are Jim and Suzanne's lessons?

Answers

Answer:

Suzanne's lessons are 20 minutes long.

Jim's lessons are 50 minutes long.

Step-by-step explanation:

Jim's lessons = 30min longer than Suzanne's lessons

Suzanne's lessons = 1/3 of Pedro's lessons

Pedro's lessons = 60min

First, you need to find Suzanne's lesson time because her lessons are linked to Pedro's. Since you know Pedro's lesson is 60 minutes long and Suzanne's are a third of that you do: 60/3. Which is 20. So you know Suzanne's lessons are 20minutes long.

Next, since you know Suzanne's lessons are 20minutes long and Jims are 30mins longer than Suzanne's you do: 20+30. Which equals 50minutes. So, Jim's lessons are 50minutes long.

Answer:

Step-by-step explanation:

its 70 min together

4(a+x)-b=16 solve for the variable x (pls help me)

Answers

Answer:

x = [tex]\frac{16+b-4a}{4}[/tex]

Step-by-step explanation:

4(a + x) - b = 16 ( add b to both sides )

4(a + x) = 16 + b ← distribute parenthesis on left side

4a + 4x = 16 + b ( subtract 4a from both sides )

4x = 16 + b - 4a ( divide both sides by 4 )

x = [tex]\frac{16+b-4a}{4}[/tex]

Lana bought a 20-pound propane
tank for her gas grill before
summer began. At the end of
summer, she had 14.3 pounds of
propane remaining. How much
propane did she use during the
summer?

Answers

Answer:

She used 5.7 pounds

Step-by-step explanation:

Asked how much she used during summer so i think we subtract 20 out of 14.3 which gives us 5.7

Answer:

5.7 pounds

Step-by-step explanation:

20 pounds - 14.3 pounds = 5.7 pounds

HEHHE another one??
Thanks guys!

Answers

Answer:

15

Step-by-step explanation:

20/25 = 4/5

12 * 5/4 = 15

-2(7a+9b)=[ ] a + [ ] b

Answers

Hey there!

-2(7a + 9b)

DISTRIBUTE -2 WITHIN the PARENTHESES

= -2(7a) - 2(9b)

= -14a - 18b

Therefore, your answer is: -14a - 18b

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

could someone help me with this question including a full explanation? thank you have a great day.​

Answers

Step-by-step explanation:

just think about the basic formulas for area and perimeter of rectangles, and what pieces of information we already have directly.

area = length × width

perimeter = 2×length + 2×width = 136 m

=> length + width = 68 m

then we know

length = 2×width + 8

this we use as substitute in the simplified perimeter equation :

2×width + 8 + width = 68

3×width + 8 = 68

3×width = 60

width = 20 m

and therefore

length = 2×width + 8 = 2×20 + 8 = 40+8 = 48 m

and now we can calculate the area :

area = length×width = 48×20 = 960 m²

please consider that for a length or distance we use m (or other length units), for and area then m². for a volume then m³. as a basic unit for an area is a square. and for a volume a cube.


What is the y-coordinate of the
midpoint of the line segment
which has endpoints
(-1,4) and (-3, -1)?

Answers

Step-by-step explanation:

h

What is the product?
2а- ?
За2
2a2 - 11a+ 14
a
3
а-2
за
а-2
За
a+2
3
a+2

Answers

The answer is 3a/a-2

The product of the Expression is 3/ (a-2).

What is Expression?

In mathematics, an expression is a phrase that has at least two numbers or variables and at least one math operation. Addition, subtraction, multiplication, or division are all examples of math operations. An expression's structure is as follows:

(Number/variable, Math Operator, Number/variable) is an expression.

We have,

(2a - 7)/ a x (3a²)/  (2a² -11a + 14)

Now, simplifying the expression as

(2a - 7)/ a x (3a²)/  (2a² -11a + 14)

= (2a - 7)/ a x (3a²)/  (2a² -7a - 4a + 14)

= (2a - 7)/ a x (3a²)/  a (2a -7) -2 (2a- 7)

= (2a - 7)/ a x (3a²)/ (a- 2)(2a-7)

= 3a² / a(a-2)

= 3/ (a-2)

Thus, the product is 3/ (a-2).

Learn more about Expression here:

https://brainly.com/question/14083225

#SPJ7

40% of students took a lunch home. if 220 students took a lunch, how many students are in the school

Answers

uhm, i think it would be 550 but im not entirely sure.

Answer:

550

Step-by-step explanation:

220 = 40%

5.5 = 1%

5.5 x 100 = 1% x 100

550 = 100%

Last one, thank you so much everyone who's helping <3

Answers

Answer:

the answer is 103!

Step-by-step explanation:

Hope this helps :)

180°-77°=103 so your answer would be 103

Mary and Aperna worked together to mow a neighbour’s lawn. They were paid $25.50. To split the money equally, Mary wants to divide by 2. Aperna disagrees and says that they need to multiply. By how much do they need to multiply? Explain.

Answers

Answer:

none just divide and get 12.57

What is (5,3) and (6,7) in point slope form

Answers

Answer:

4

Step-by-step explanation:

( x1, y1 ) = ( 5, 3 )

Here,

x1 = 5

y1 = 3

( x2, y2 ) = ( 6, 7 )

Here,

x2 = 6

y2 = 7

Formula : -

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

Slope = ( 7 - 3 ) / ( 6 - 5 )

= 4 / 1

Slope = 4

Answer:

(y−3)=4(x−5)

Step-by-step explanation:

Point slope form is defined by the formula [tex]y-y_{1}=m(x-x_{1})[/tex]

First, you find the slope using the slope equation [tex]\frac{y_{2} -y_{1}}{x_{2}-x_{1}}[/tex]. (7−3)/(6−5)=4. Then you plug it back into the point slope form equation, and also plug in the points from y1 and x1.

This is also y=4x−17 in slope-intercept form or −4x+1y=−17 in standard form.

What did you learn, observe and discover in this pr

Answers

This doesn’t make since

A company owns two dealerships. The first dealership sells a total of 138 vehicles (cars and trucks). The second dealership sells half as many cars and five times as many trucks as the first dealership, and sells a total of 213 vehicles (cars and trucks).

How many cars do the two dealerships sell in total?

Answers

244.5 because 213/2=106.5+138=244.5

Mrs. Wood has a new student who feels confused about horizontal and vertical lines. Write an
explanation on the differences between the two special cases. Include information about the
graphs, the slopes, and the equations of these two types. Include examples to help with your
explanation.

Answers

A Vertical line is a line going up and down and a horizontal line is a line goes left to right

What is the Domain and Range of the following Graph?

Answers

Answer:

-42

Step-by-step explanation:

Trong cơn bão số 9 vừa qua. Một cột điện cao 9m bị gió bão làm gãy ngang thân, ngọn của cột điện chạm đất cách gốc 3m. Hỏi điểm gãy cách gốc bao nhiêu mét?

Answers

AB=9m and BC=3m

Using Pythagoras theorem, In ΔABC

(AC)² +(AB)² +(BC)²

⇒(AC)² =(9)² + (5)²

⇒(AC)² =81 + 25

⇒(AC)² =106

⇒AC=10.3m

=AC+CB=10.3+3=13.3m

(5 1/4)÷(− 2 1/2) pls help

Answers

Answer:

Step-by-step explanation:= 21/4 divided by -5/2

= 21/4 x -2/5. flipped and multiplied

= -21/10

= -2 1/10

Answer:

-2 1/10

Step-by-step explanation:

5 1/4 = 21/4

-2 1/2 = -5/2

21/4 ÷ -5/2=-21/10 = -2 1/10

Bài 2: Tìm x biết


a, (x + 2)(x + 3) - (x - 2)(x + 5) = 6


b, 3(2x - 1)(3x - 1) - (2x - 3)(9x - 1) = 0

Answers

Answer:

76

Step-by-step explanation:

please could someone help me understand this? thank you

Answers

Answer:

here ..

length=6cm

breadth=4cm

height=5cm

we know that,

Total Surface Area of Cuboid, (S )= 2 (lb + bh + lh)

=2(6*4+4*5+6*5)

=2(24+20+30)

=2*74

=148

Write and solve the inequality. In Mine craft your current diamond count is 30. If you get 15 diamonds per day how many days will it take for you to get no less than 1,200? PLEASE SHOW WORK

Answers

Answer:Explanation is in a file

Step-by-step explanation:cuft.ly/4RqtIvk

HELP ME PLS!!!
If a number is a whole number, then it is an integer.
3 is a whole number
Therefore, 3 is an integer

A. This conclusion was drawn using the law of detachment
B. This conclusion was drawn using the law of syllogism
C. This conclusion was drawn using the law of contrapositive
D. An invalid conclusion was made

Answers

Answer:

A. This conclusion was drawn using the law of detachment

Step-by-step explanation:

Definition:

Law of Detachment

If p equals q and p is also true. Then q is true.

if a number is a whole number, then it is an integer.

3 is a whole number (true statement) , so it 3 is an integer. (must be true)

permutasi dari kata

- jisoo
- cantik
- sudah

note: ...​

Answers

Eh?..

[tex] \: \: \: [/tex]

Answer:

jisoo = 60 word ordercantik = 720 word ordersudah = 120 word order

Step-by-step explanation:

"jisoo"

j = 1

i = 1

s = 1

o = 2

element total = 5double element = letter o(2)

[tex]p = \frac{n!}{k!} = \frac{5!}{2!} = \frac{5 \times 4 \times 3 \times 2 \times 1}{2 \times 1} = \frac{120}{2} [/tex]

P = 60 word order

------------

"cantik"

c = 1

a = 1

n = 1

t = 1

i = 1

k = 1

element total = 6double element = -

[tex]p = n! = 6! = 6 \times 5 \times 4 \times 3 \times 2 \times 1[/tex]

P = 720 word order

------------

"sudah"

s = 1

u = 1

d = 1

a = 1

h = 1

element total = 5double element = -

[tex]p = 6 \times 5 \times 4 \times 3 \times 2 \times 1[/tex]

P = 120 word order

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