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3 years ago

DUE IN 5 MINUTES, CORRECT ANSWERS ONLY PLZ

Mathematics

2 answers:

ankoles [38]3 years ago

6 0

Answer:

it was taken away

Step-by-step explanation:

gogolik [260]3 years ago

3 0

She is losing $20, so it indicates a negative number when really it is positive

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Help with this asap!

zmey [24]

Answer:

26?

Step-by-step explanation

because they are vertical? (i think the word) they are equal so set them equal to each other then solve for x

5 0

3 years ago

A ball is thrown upward from ground level. Its height h, in feet, above the ground after t seconds is h-48t -16t^2.

Marat540 [252]

Answer:

36 feet.

Step-by-step explanation:

We have been given that a ball is thrown upward from ground level. Its height h, in feet, above the ground after t seconds is $h(t)=-48t -16t^2$ . We are asked to find the maximum height of the ball.

We can see that our given equation is a downward opening parabola, so its maximum height will be the vertex of the parabola.

To find the maximum height of the ball, we need to find y-coordinate of vertex of parabola.

Let us find x-coordinate of parabola using formula $x=-\frac{b}{2a}$ .

$x=-\frac{-48}{2(-16)}$

$x=-\frac{48}{32}$

$x=-\frac{3}{2}$

So, the x-coordinate of the parabola is $-\frac{3}{2}$ . Now, we will substitute $x=-\frac{3}{2}$ in our given equation to find y-coordinate of parabola.

$h(t)=-48t -16t^2$

$h(-\frac{3}{2})=-48(-\frac{3}{2})-16(-\frac{3}{2})^2$

$h(-\frac{3}{2})=-24(-3)-16(\frac{9}{4})$

$h(-\frac{3}{2})=72-4*9$

$h(-\frac{3}{2})=72-36$

$h(-\frac{3}{2})=36$

Therefore, the maximum height of the ball is 36 feet.

3 0

3 years ago

Can someone help me on question 7b ?

Marizza181 [45]

Lengths are given to 1dp so the biggest that the lengths could be is 4.65cm and 5.35cm. if you use pythagoras on these to find hypotenuse, this is the upper bound.

4 0

2 years ago

Complete the function for this graph.

BigorU [14]

Answer:

-5

Step-by-step explanation:

The y coordinate of the vertex is -5.

4 0

2 years ago

At a meeting attended by 23people, the females were 7 more than the males. How many males were there?

Agata [3.3K]

Answer:

Step-by-step explanation:

x+x+7=23

2x=16

x=8

5 0

2 years ago