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GREYUIT [131]
3 years ago
9

BRUH HELP ME i dint know how to do this stuff man

Mathematics
1 answer:
Sophie [7]3 years ago
3 0
Chicken is yum yum i love it omg yeah
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H=7 + 29t-16t^2 find all values of t for which the balls height is 19ft
NikAS [45]
\bf \qquad \textit{initial velocity}\\\\
\begin{array}{llll}
\qquad \textit{in feet}\\\\
h(t) = -16t^2+v_ot+h_o
\end{array} 
\quad 
\begin{cases}
v_o=\textit{initial velocity of the object}\\
h_o=\textit{initial height of the object}\\
h=\textit{height of the object at "t" seconds}
\end{cases}\\\\
-------------------------------\\\\

\bf h(t)=7+29t-16t^2\qquad h(t)=19\implies 19=7+29t-16t^2
\\\\\\
16t^2-29t+12=0\impliedby \textit{now, let's use the quadratic formula}
\\\\\\
t=\cfrac{-(-29)\pm\sqrt{(-29)^2-4(16)(12)}}{2(16)}\implies t=\cfrac{29\pm\sqrt{841-768}}{32}
\\\\\\
t=\cfrac{29\pm\sqrt{73}}{32}\implies t\approx 
\begin{cases}
1.17\\
0.64
\end{cases}

so  hmm check the picture below, thus the ball hits 19 feet of height twice, once on the way up, and once on the way down, at about 0.64 seconds and at 1.17 seconds.

5 0
4 years ago
luis has three more quarters than dimes in his pocket, for a total of $1.80. How many dimes (x) are in his pocket
Dmitry_Shevchenko [17]

Answer:

3

Step-by-step explanation:

In this case, Luis has 6 quarters, and 3 dimes. 6 - 3 = 3, and it works out to the following:

6 • 0.25 = 1.50

3 • 0.10 = 0.30

1.50 + 0.30 = 1.80

8 0
3 years ago
The distance a car drives, in miles, is proportional to the number of gallons of gas it uses. The graph shows this relationship.
Minchanka [31]

Answer:

21 miles per gallon

Step-by-step explanation:

The formula for slope is

m=\frac{y_2-y_1}{x_2-x_1}

Using the points (0, 0) and (1, 21), we have

m = (21-0)/(1-0) = 21/1 = 21

This means they get 21 miles per gallon of gas.

6 0
3 years ago
When Tyson opens and lays a cereal box out flat, he sees that the top and the bottom of the box both measure 11 inches by 8 inch
I am Lyosha [343]
404 in. squared is the answer. 
8 0
4 years ago
When 7 is subtracted from five times a number, the result is greater than twice the sum of the number and 4. Find all the number
hichkok12 [17]

Given :

When 7 is subtracted from five times a number, the result is greater than twice the sum of the number and 4.

To Find :

All the numbers that satisfy the inequality.

Solution :

Let , the number is x .

Mathematical expression for first term is :

5x - 7

Mathematical expression for second term is :

2(x + 4)

Now , comparing both the expression by given constrain.

5x - 7 > 2(x + 4)\\\\5x-7>2x+8\\\\3x>15\\\\x>5

So, all the numbers that satisfy the inequality are greater than 5.

Hence , this is the required solution.

3 0
3 years ago
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