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elena-s [515]
3 years ago
6

HELP FOR BRAINLIEST

Mathematics
1 answer:
Snezhnost [94]3 years ago
7 0
The first one is 37,460 second is .4634
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A ball is projected upward from ground level. After t seconds, it’s height in feet is a function defined by f (t) = -16t^2 + 96t
Law Incorporation [45]

Answer:

t = 2 s and t = 4 s

Step-by-step explanation:

A ball is projected upward from ground level. After t seconds, it’s height in feet is a function defined by,

f (t) = -16t^2 + 96t

We need to find in how many seconds will the rocket be at a height of 128 ft above the ground.

It means,

128= -16t^2 + 96t\\\\-16t^2+96t-128=0\\\\16(-t^2+6t-8)=0\\\\(-t^2+6t-8)=0\\\\-t^2+4t+2t-8=0\\\\t(-t+4)-2(-t+4)=0\\\\(t-2)=0\ and\ (-t+4)=0\\\\t=2\ and\ t=4

So, it will be at a height of 128 feet at 2 second and 4 second.

8 0
3 years ago
In a 30-60-90 triangle, the long leg is 60, what is the short leg
shepuryov [24]

Answer:

The shorter leg, which is opposite to the 30- degree angle, is labeled as x. The hypotenuse, which is opposite to the 90-degree angle, is twice the shorter leg length (2x). The longer leg, which is opposite to the 60-degree angle, is equal to the shorter leg's product and the square root of three (x√3).

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
For line graphs and bar graphs, the values measured by the vertical axis
mestny [16]

Answer:

Horizontal

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
Someone please help with this question
algol13
Question 4:
Area = 1/2(A+B)*h
1/2(12+6)*5
1/2(18)*5
9*5
45

Question 5
Area = 1/2 (A+B)*h
1/2(12+16)*9
1/2(28)*9
14*9
126

5 0
4 years ago
Finding β0 and β1 . The equation for a straight line (deterministic) is y = β0 + β1x. If the line passes through the point (0,1)
Anton [14]

Answer:

y = x + 1  

Step-by-step explanation:

We are given the following in the question:

y = \beta_0 + \beta_1x

The line passes through (0,1).

1= \beta_0 + \beta_1(0)\\\Rightarrow 1= \beta_0

The line passes through (2,3)

3= \beta_0 + \beta_1(2)\\\Rightarrow 3= 1 + \beta_1(2)\\\Rightarrow 2 = 2\beta_1\\\Rightarrow \beta_1 = 1

Thus, the equation of the line that passes through the points (0,1) and (2,3) is given by:

Slope:

m = \beta_1 = 1

Intercept:

c = \beta_0 = 1

Equation:

y = x + 1

is the required equation.

8 0
3 years ago
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