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PIT_PIT [208]
3 years ago
15

greg plans to buy a book for $5.00 and some music CDs for $4.00 each. the greatest total amount o money that greg plans to spend

on buying the book and music CDs is $29.00. what is the number of music CDs, x, that Greg can buy?
Mathematics
1 answer:
-Dominant- [34]3 years ago
7 0
Greg can buy 6 music CDs.

$4.00 X $6.00 = $24

$24 + 5 = $29
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A stock has a price of $58.63. This is $5.92 less than the price of the stock yesterday. Write and solve an equation to find the
inysia [295]

Answer: $52.71

Step-by-step explanation:

Today's price= $58.63

Yesterday's price= y

Difference= $5.92

y+5.92 = 58.63

y = 58.63 - 5.92

= $52.71

4 0
2 years ago
1) Find the slope of the line passing through the given points (2, 120) and (1, 60).
EastWind [94]

Answer:

1. 60. 2. -6. 3. -4/5

Step-by-step explanation:

Okay so I haven't done slope in 3 years but I used to be a god at it so please tell me if you get this right and I'm so so sorry if you get them wrong

5 0
2 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)

0=a(0-10)^2+50)

0=100a+50

a=\frac{-1}{2}

so the equation in vertex form is h_1=\frac{-1}{2}(t-10)^2+50

expand to get general form

h_1=\frac{-1}{2}(t^2-20t+100)+50

h_1=\frac{-1}{2}t^2+10t-50+50

h_1=\frac{-1}{2}t^2+10t





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

(0,22)

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

22=100a+72

-50=100a

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

from the graph, we can see that the lowest possible height is 0yd and the highest height is 50yd

so range is 0 to 50 or 0≤h≤50


domain is the numbers that t is allowed to be

think about what t represents. it represents how long the rocket has been flying

it will stop flying when it hits the ground or at t=20

it starts flying at t=0

so domain is from 0 to 20 or 0≤t≤20

3 0
3 years ago
Help please! Spring break hw for 7th grade advanced.
likoan [24]
I am so sorry if I'm wrong, but I think 5 is b
4 0
3 years ago
The equation y = 11x shows that a boat travels at a speed of 11 km/h. Which ordered pair satisfies the equation y = 11x?
Arada [10]
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(30, 330)
(90, 990)

etc, etc
3 0
3 years ago
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