Hellppp!!! I need help with the problem that the pencil is pointing ay

Answer:

[tex]2.89\ \text{s}[/tex]

0.11 seconds

[tex]37.4\ \text{m}[/tex]

Step-by-step explanation:

[tex]t_1[/tex] = Time taken by the pebble to hit the water

[tex]t_2[/tex] = Time taken by the sound to travel to the observer

[tex]t_1+t_2[/tex] = Time taken by the observer to listen to the splash after stone is thrown = 3 s

[tex]t_1=3-t_2[/tex]

a = g = Acceleration due to gravity = [tex]9.81\ \text{m/s}^2[/tex]

[tex]u_s[/tex] = Speed of sound = 340 m/s

The distance traveled by the pebble

[tex]s=ut+\dfrac{1}{2}at_1^2\\\Rightarrow s=0+\dfrac{1}{2}\times9.81(3-t_2)^2\\\Rightarrow s=4.905(9+t_2^2-6t_2^2)[/tex]

Distance traveled by the sound

[tex]s=u_st\\\Rightarrow s=340\times t_2[/tex]

The distance traveled by the sound and the pebble is equal

[tex]4.905(9+t_2^2-6t_2)=340\times t_2\\\Rightarrow 9+t_2^2-6t_2=\dfrac{340}{4.905}t_2\\\Rightarrow 9+t_2^2-6t_2=69.32t_2\\\Rightarrow t_2^2-75.32t_2+9=0\\\Rightarrow t_2=\frac{-\left(-75.32\right)\pm \sqrt{\left(-75.32\right)^2-4\times \:1\times \:9}}{2\times \:1}\\\Rightarrow t_2=75.2,0.11[/tex]

Since [tex]t_1+t_2=3[/tex] the value of [tex]t_2[/tex] cannot be greater than 3.

So, time taken by the sound to reach the observer is 0.11 seconds.

Time taken by the pebble to hit the water is [tex]t_1=3-t_2=3-0.11=2.89\ \text{s}[/tex]

Depth of the well is [tex]s=340t_2=340\times 0.11=37.4\ \text{m}[/tex]

Answer:

The intersection points are (-1,0) and (10,0)

Step-by-step explanation:

Brainliest if i am right? uwu

Answer:

3/100=0.03.

second one.

60/10=6.

Answer:

see below

Step-by-step explanation:

just cross multiply:

10 (x) = 3 (100)

x = 300 / 10

x = 30

same as above, just cross multiply:

100 (x) = 60 (10)

x = 600 / 100

x = 6

Answer:

Hey I think I have the Answer 273

Step-by-step explanation:

[3x(3+10)x7]

First add 3+10

Then multiply 3x13

Then 39x7

Then you get 273 Hope this help mark me BRAINLEST!!!! PLZ

HAVE A NICE DAY!!!

Answer: 273

Step-by-step explanation: 1. PEMDAS P=parenthesis E=exponents M=multiplication D=division A=addition S=subtraction

                              [3 x (3 + 10)] x 7

1. 3 + 10 = 13

2. 3 x 13 = 39

3. 39 x 7 = 273

                            PLZ MAKE ME BRIANLIEST                

                             IF THIS IS THE WRONG ANSWER IM VERY SORRY

                            I DOUBLE CHECKED THOUGH SO ITS NOT :P

Answer:

Step-by-step explanation:

C. Solve for y

Answer:

The Answer is (3,2) I took the test on A.P.E.X.

Answer:

c ≤ 13

I think what was the question tho

Step-by-step explanation:

Answer:

457/100

Step-by-step explanation:

just move the decimal to the right twice and put a hundred underneath

Answer:

x>-2

3+4x>-5

4x>-5-3

4x>-8

x>-2

the answer is x>-2

Answer:

x > -2

Step-by-step explanation:

Answer:

m = -48

Step-by-step explanation:

m - 11 = -59 (add 11 on both sides)

m = -48

Hope this helps!!

Answer:

m = -48

Step-by-step explanation:

m - 11 = -59

you add the 11 to both sides crossing it out from the left side and then you get an equation that looks like this.

m = -59 + 11

Now you can just solve it like a simple subtraction problem, -59 + 11 = -48

Hope I was able to help :)

Answer:

F(1) represents the first term of the sequence.

Step-by-step explanation:

Let us suppose the sequence function

[tex]F(n) = 16-3n[/tex]

We can find the first term of the sequence by substituting n=1 in the function sequence

[tex]F(1) = 16-3(1)[/tex]

        [tex]= 16-3[/tex]

        [tex]=13[/tex]

We can find the 2nd term of the sequence by substituting n=2 in the function sequence

[tex]F(2) = 16-3(2)[/tex]

        [tex]= 16-6[/tex]

        [tex]=10[/tex]

We can find the 3rd term of the sequence by substituting n=3 in the function sequence

[tex]F(3) = 16-3(3)[/tex]

        [tex]= 16-9[/tex]

        [tex]=7[/tex]

So the first three terms of the sequence is:

13, 10, 7...

As the common difference is the same.

i.e. d = 10-13 = -3, d = 7-10 = -3

Hence, it is an Arithmetic sequence.

As the first term is 13, which can be obtained by putting n=1 in the function sequence.

Therefore, from the above discussion, we can conclude that F(1) represents the first term of the sequence.

Answer:

17

Step-by-step explanation:

5x-68=x

5x-x=68

4x=68

x=68/4=17

Answer:

this is fhe cordecr answer for rhis

[tex]5 \sqrt{6} [/tex]

Answer:

d=1

Step-by-step explanation:

distribute 0.5 through the parentheses

3.5d+2=7-1.5d

move variable to the left-hand side and change its sign

3.5d+1.5d+2=7

move constant to the right-hand side and change its sign

3.5d+1.5d=7-2

collect all like terms

5d=7-2

subtract the numbers

5d=5

divide both sides

d=1

Answer:

Step-by-step explanation:

25.30*8% tax = 2.02 tax

total 25.30+2.02= $27.32

Answer:

$27.32

Step-by-step explanation:

Multiply $25.30 by 0.08 (8% is equal to 0.08)

2.024

Add 2.024 to $25.30

That would be 27.324

Round to the nearest hundredth

$27.32

Hope this helps :)

Please consider Brainliest :)

Answer:

The image is the graph

Step-by-step explanation:

Answer:

Step-by-step explanation:

-8 is the y int and 4 your slope

Answer:

449.65

Step-by-step explanation:

391x.15=58.65

$58.65+$391= 449.65

w

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Could you zoom in. I can't really see it

Answer:

yay

Step-by-step explanation:

HEY Keaniiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

Answer:

Step-by-step explanation:

7.

Domain : { x | -2 < x < 2 } (x such that x is greater than -2 and less than 2)

Range: { y | 1 < y < 5 } (y such that y is greater than 1 and less than 5)

8.

Domain: { x | x € ℝ } (x such that x is all real numbers)

Range: { y | x € ℝ } (y such that y is all real numbers)

The +7 at the end effectively adds 7 to each y coordinate output, which is why the entire graph shifts up 7 units. For instance, a point like (1,2) moves to (1,9) after shifting up 7 units.

Side note: The function f(x)=⌈x⌉ is the ceiling function. It takes any decimal value and rounds it up to the nearest whole number. If you had an input like x = 2.01 then the output would be y = 3 even though 2.01 is closer to 2 than it is to 3.

Answer: A) shift up 7 units

Step-by-step explanation:

The +7 at the end effectively adds 7 to each y coordinate output, which is why the entire graph shifts up 7 units. For instance, a point like (1,2) moves to (1,9) after shifting up 7 units.

Side note: The function f(x)=⌈x⌉ is the ceiling function. It takes any decimal value and rounds it up to the nearest whole number. If you had an input like x = 2.01 then the output would be y = 3 even though 2.01 is closer to 2 than it is to 3.

Answer:

It is 11 and 4/7 I am pretty sure hope I helped!

Answer:

4x+x=360 (whole equation)

x=72 (answer)

Step-by-step explanation:

Let the distance driven by Jason be x.

Selena drove four times as far.

Hence, distance Selena drove is 4x.

They drove 380 miles altogether.

Hence, 4x + x = 380

5x = 380

x = 72

Hope this helped!

Answer:

1.72r²

Step-by-step explanation:

total Rectangle area = 4r*2r = 8r²

total circles area = 2(π r²) = 2*3.14*r² = 6.28r²

then:

the area of the shaded region:

= 8r² - 6.28r²

= (8-6.28)r²

= 1.72r²

Answer:

2r²(4 - π)

Step-by-step explanation:

The shaded area (A) is calculated as

A = area of rectangle - area of 2 circles

The rectangle has a length of 4r and a width of 2r , then

A = (4r × 2r) - (2πr²)

   = 8r² - 2πr² ← factor out 2r² from each term

    = 2r²(4 - π)

Answer:

D

Step-by-step explanation:

the domain is all x values. so:

0, 4, 5, 10

I think that's answer d

Answer:

Step-by-step explanation:

The domain is the x so 0,4,5,10 or D

The x and y intercepts are:

x=(1,0)

y=(0,3)

Answer:

1.8

Step-by-step explanation:

Answer:

20

Step-by-step explanation:

first take out the cost of the cup 31.75-6.75=25

then divide by the cost of the refills 25/1.25=20

hope this helps :)