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sammy [17]
3 years ago
13

Fido and Jet are two medium size dogs. Fido weighs exactly 15 pounds​ less than Jet. Together, they weigh exactly 89 pounds.​

Mathematics
1 answer:
Elan Coil [88]3 years ago
3 0

Answer:

jet weighs 74 pound

Step-by-step explanation:

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Kimmy bought a 5 kilogram can of peanuts for $4.50. What is the unit price?
patriot [66]
The unit price of the can of peanuts is $0.9 per can
8 0
3 years ago
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Which expression represents the volume of the pyramid? One-fifth(5.2)h cm3 StartFraction 1 Over 5 h EndFraction(5.2)h cm3 One-th
anyanavicka [17]

Answer:

1/3(5.2)h cm³

Step-by-step explanation:

A solid right pyramid has a regular hexagonal base with an area of 5.2 cm2 and a height of h cm. Which expression represents the volume of the pyramid?

One-fifth(5.2)h cm3 StartFraction 1 Over 5 h EndFraction(5.2)h cm3

One-third(5.2)h cm3 StartFraction 1 Over 3 h EndFraction(5.2)h cm3

Volume of the pyramid = 1/3 × area × height

Area = 5.2 cm²

Height = h cm

Volume of the pyramid = 1/3 × 5.2 cm² × h cm

= 1/3(5.2)h cm³

7 0
2 years ago
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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
An 8ft length of crown molding costs $12. How much will it cost to buy 40 ft of crown molding?​
zzz [600]

Answer:

$60

Step-by-step explanation:

12/8 = x/40

40(12/8) = x

60 = x

8 0
2 years ago
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the student council has 36 membersthe ratio of girls to boys is 5 to 4 how many student council members are girls?
kap26 [50]
Ratio of girls : boys = 5 : 4

<u>Find total parts:</u>
Total parts = 5 + 4 = 9

<u>Find 1 part:</u>
9 parts = 36
1 part = 36 ÷ 9 = 4

<u>Find 5 parts (Girls):</u>
Girls = 5 parts = 4 x 5 = 20

Answer: There are 20 girls.
8 0
3 years ago
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