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UkoKoshka [18]
3 years ago
10

A tabletop in the shape of a trapazoid have an area of 6550 square centimeters. its longer base measures 115 centimeters, and th

e shorter base is 85 centimeters. what is the height
Mathematics
1 answer:
Arturiano [62]3 years ago
3 0
A= 1/2 h ( sum of bases) SUBSTITUTE 6550= 1/2h (115+85) 6550=1/2h (200) 6550= 100h 65.5= h height is 65.5 cm Hope this helps
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John drew a trapezoid ABCD on a coordinate plane. The coordinates are as follows
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Step-by-step explanation:

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3 years ago
1.) What is the equation of the path of firework #1? Write your equation in general form.
valina [46]

1. I'm assumig that the paths are perfect parabolas

this means that their general forms can be written in y=ax^2+bx+c

it's easier to find vertex form first then expand to get general form

vertex form is y=a(x-h)^2+k where the vertex is (h,k) and a is a constant


firework #1

vertex is (10,50), so (h,k)=(10,50) and h=10, k=50

h_1=a(t-10)^2+50

to find the value of a, subsitute another point

(0,0)

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2.

same as last time

vertex is (10,72) so (h,k)=(10,72) so h=10 and k=72

equation is h_2=a(t-10)^2+72

find a

use another point

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22=a(0-10)^2+72

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a=\frac{-1}{2}

so the equation in vertex form is h_2=\frac{-1}{2}(t-10)^2+72




3.

range is the numbers that h is allowed to be

think about what h represents. it represents the height of the rocket

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so range is 0 to 50 or 0≤h≤50


domain is the numbers that t is allowed to be

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3 0
3 years ago
What is the explicit equation for the sequence of 25, 21, 17, 13?
OlgaM077 [116]

Answer:

You are taking away 4 each time

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3 0
3 years ago
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