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2 years ago

11

For every 4 adults at the beach one afternoon, there were 3 childern. how many childern were at the beach if there were 8, 12, 1

6 or 20 adults at the beach . how does the graph show the ratio
PLEASE HURRY

1 answer:

kompoz [17]2 years ago

3 0

Answer:

See below ↓

Step-by-step explanation:

4 adults → 3 children → 3 children

1 adult → (3/4) children → 3/4 children

8 adult → (3/4)*8 children → 6 children

12 adult → (3/4)*12 children → 9 children

16 adult → (3/4)*16 children → 12 children

20 adult → (3/4)*20 children → 15 children

In ratio, children: 6 : 9 : 12 : 15 → 2 : 3 : 4 : 5 ____simplified.

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A bullet is fired straight up from a gun with initial velocity 1120 feet per second at an initial height of 8 feet. Use the form

Dafna1 [17]

Answer:

70 seconds

Step-by-step explanation:

Given that;

The initial velocity $v_o$ of the bullet fired = 1120 ft/s

Initial height h = 8 feet

The expression to determine how many seconds it takes the bullet to hit the ground is:

$h = -16t^2 +v_ot + 8$

Thus;

Replacing the value of $v_o$ = 1120 and h = 0 (i.e. when h =0) in the above expression; we have:

$0= -16t^2 +(1120)t + 8$

$= -16t^2 +(1120)t + (8-0)$

= -16t² + 1120t + 8

mulitiply through by (-)

= 16t² -1120t - 8

Divide through by 8

= 2t² - 140t - 1

The above expression forms a quadratic equation.

where;

a = 2

b = -140

c = - 1

So, by using the quadratic formula $\dfrac{-b \pm \sqrt{b^2-4ac}}{2a}$ , we have:

$= \dfrac{-(-140) \pm \sqrt{(-140)^2-4(2)(-1)}}{2(2)}$

$= \dfrac{140 \pm \sqrt{19600-(-8)}}{4}$

$= \dfrac{140 \pm \sqrt{19608}}{4}$

$= \dfrac{140 \pm 140}{4}$

$=\dfrac{140+ 140}{4} \ \ \ OR \ \ \ \dfrac{140-140}{4}$

$=\dfrac{280}{4} \ \ \ OR \ \ \ 0$

= 70

Thus, the time (in seconds) it took the bullet to it the ground = 70 seconds

6 0

3 years ago

Shawn has $5 more than Rj and Riley has $10 less than Shawn. If there combined total is $414, how much does

ExtremeBDS [4]

Answer:

Rj has $138$ dollars, Shawn has $143$ dollars, and Riley has $133$ dollars.

Step-by-step explanation:

Let's make the amount of money Rj has $x$ , so Shawn would have $5+x$ dollars, and Riley would have $(5+x)-10$ dollars. Altogether they have $414$ dollars, so you can create an equation.

$x+(5+x)+((5+x)-10)=414\\3x+0=414\\3x=414\\x=138$

Now that we know that $x=138$ , we can substitute x into each equation.

Rj has $138$ dollars, Shawn has $143$ dollars, and Riley has $133$ dollars.

5 0

2 years ago

Read 2 more answers

PLEASE SOLVE WILL GIVE BRAINLIEST IF RIGHT

wlad13 [49]

Answer: It would be (3)1

Step-by-step explanation:

3 0

2 years ago

Angle Bisector Solve for Y

olganol [36]

As <ABC=40

3x-1+34-2x=40

x =40-34+1 = 7

In triangle ABD

3x-1 + 90 +3y + 6= 180

3(7) +3y +95 =180

3y= 180-95-21=64

Y =64/3

4 0

3 years ago

Johnny's mother has 3 children. The first child is named April. The second child is named May. What is the third child's name

Musya8 [376]

The answer is Johnny. You can conclude from the first sentence of your question. It is stating that Johnny's mother has three children. Johnny is included in the three children. So, the third child's name was Johnny!
Thank you! :D

3 0

3 years ago