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2 years ago

Plz help 2 more questions left

Mathematics

1 answer:

ki77a [65]2 years ago

4 0

Answer:

1st ? -> -6x

2nd ? -> 4x

3rd ? from left -> 4x

4th ? -> 24

5th ? -> 6

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Each person in a group buys a movie ticket, a drink, and a popcorn. How much does the group pay when there are 6 people in the g

evablogger [386]

Answer: 81

Step-by-step explanation:
6.75 + 3 + 3.75 = X
X x 6 = 81

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1 year ago

Read 2 more answers

The height of a triangle is 7 ft more than its base. if the area of the triangle is 30 ft^ what is the lentgh of the base

Dmitriy789 [7]

Since the area of a triangle is in the form
area=0.5(base)(height)
height=base+7
let base=x
area=0.5(x)(7+x)
30=3.5x+0.5x^2
multiply the equation by 2
60=7x+x^2
subtract 60 from both sides
x^2+7x-60=0
(x-5)(x+12)=0
thus x=5 or x=-12 since we are only considering positive answers
x=-12 is rejected
so base=5 and height=5+7=12

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3 years ago

How do I answer this?

Stels [109]

If you are trying to find the area the answer would be 48

3 0

2 years ago

Use these functions to answer the questions.

Elenna [48]

Part A
We have $f\left(x\right)=\left(x+3\right)^2-1$ . To solve for the x-intercept, we set f(x) equal to 0. That is
$\left(x+3\right)^2-1=0$

$\left(x+3\right)^2=1$

Take the square root of both sides,
$x+3=1$

$x=-2$

The x-intercept is (-2,0).

To solve for the y-intercept, we set x=0. That is
$y=\left(0+3\right)^2-1=3^2-1=9-1=8$

The y-intercept is (0, 8)

The coordinates of the optimum point are actually the vertex which can be easily seen from the vertex form equation given above. The minimum point is (-3, -1).

Part B.
We have $g\left(x\right)=-2x^2+8x+3$ .
Factor out -2
$=-2\left(x^2-4x\right)+3$

Complete the square
$=-2\left(x^2-4x+4\right)+3-2\left(4\right)$

Simplify
$g(x)=-2\left(x-2\right)^2-5$

Part C
We have $h\left(t\right)=-16t^2+28t$ .
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3 years ago

The ball rolls downhill, its kinetic energy increases and its potential energy ________

lana [24]

Maximum. Hope you get it right!!

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2 years ago