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andrey2020 [161]

2 years ago

10

Use an online to to estimate the cost for one year at a 4 year university and one year at a 2 year college in Texas.

1 answer:

mart [117]2 years ago

6 0

The answer is 50’ because the majority of the population is very high in Europe

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Please help this is so confusing too many number!

lisov135 [29]

A main characteristic of a function is that each output has exactly one input. This means that for the X value there can’t be any repeats, making the answer C.

4 0

3 years ago

Read 2 more answers

Duffy was analyzing the trajectory made after throwing a football. his coach was able to measure that his throw reached a maximu

gregori [183]

Answer:

4.35 seconds.

Step-by-step explanation:

Let x represent the time the independent variable and y be dependent variable (height of the ball).

We are told that Duffy figured that the ball left his hand at a height of 5 feet. This means at x equals 0, y was 5 or initial height of ball is 5 feet.

We have been given that Duffy's coach measured that his throw reached a maximum height of 18 feet after 2 seconds. This means that at x equals 2 y was 18.

As point (2,18) represents maximum height of ball, so it will be vertex of parabola.

Since initial height of ball is less than maximum height, so our parabola will be downward opening and leading coefficient will be negative.

We know that vertex form of a downward opening parabola is in form: $y=-a(x-h)^2+k$

$y=-a(x-2)^2+18$

Let us find value of a using point (0,5).

$5=-a(0-2)^2+18$

$5=-a*4+18$

$5-18=-a*4+18-18$

$-13=-4a$

$\frac{-13}{-4}=\frac{-4a}{-4}$

$\frac{13}{4}=a$

Therefore, the equation $y=-(\frac{13}{4})(x-2)^2+18$ can be used to find the height of ball after x seconds.

To find the time it will take the ball to hit the ground, we will substitute y equals 0 in our equation.

$0=-(\frac{13}{4})(x-2)^2+18$

$0-18=-(\frac{13}{4})(x-2)^2+18-18$

$0-18=-(\frac{13}{4})(x-2)^2$

$-18*(\frac{4}{13})=-(x-2)^2$

$\frac{72}{13}=(x-2)^2$

Taking square root of both sides of our equation we will get,

$\sqrt{\frac{72}{13}}=x-2$

$x-2\pm 2.35339$

$x-2=2.35339\text{ (or) } x-2=2.35339$

$x-2+2=2.35339+2\text{ (or) } x-2+2=-2.35339+2$

$x=4.35339\text{ (or) } x=-0.35339$

$x\approx 4.35\text{ (or) } x\approx -0.35$

Since time can not be negative, therefore, the ball will hit the ground approximately after 4.35 seconds.

7 0

2 years ago

I don’t really understand this may you please help!¡

Helga [31]

Answer:(15+6)÷3

Step-by-step explanation:

You add 15 and 6 to get the total, the divide by 3 to see how much each person pays.

7 0

2 years ago

To enter a local fair, one must pay an entrance fee and pay for the number of ride tickets he/she wants. Admission to the fair i

Xelga [282]

Answer:

A - $10

Step-by-step explanation:

The equation f(x) = 0.50x + 10 is in the form

y = mx + c where m is the gradient and c is the intercept.

The price of the entrance fee will be the intercept because that is when x is equal to 0, meaning it will be $10.

3 0

2 years ago

Read 2 more answers

Factor -7x3 + 21x2 + 3x - 9 by grouping. What is the resulting expression?

irga5000 [103]

Answer:

$(x-3)(-7x^2+3)$ is the resulting expression after grouping

Step-by-step explanation:

Given:

$-7x^3+21x^2+3x-9$

Now taking common $-7x^2$ from 1st 2 numbers and and 3 common from last we get

$-7x^2(x-3)+3(x-3)$

Now taking x-3 common from both numbers we get

$(x-3)(-7x^2+3)$ which is the final equation after grouping

8 0

3 years ago