2 years ago

3y + 7 = x is this a direct proportion

Mathematics

1 answer:

Tju [1.3M]2 years ago

3 0

Answer:

Step-by-step explanation:

if the ratio (yx) of two variables (x and y) is equal to a constant (k=yx) .in this case y is said to be directly proportional to x with proportionality constant k

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A company rents out 15 food booths and 22 game booths at the county fair. The fee for a food booth is $100 plus $9 per day. The

Tasya [4]

I'm not completely sure about this answer but here is what I got: 100•15=1500 for one day of the food booth. 50•22=1100 one day for the game booth. 1500+(x9) and 1100+(x8). (1500+x)+(1100+x)=x

8 0

3 years ago

Find the constant rate of change.

Aleonysh [2.5K]

Answer:

-1

Step-by-step explanation:

slope = y2-y1/x2-x1

(5,5) (7,3)

slope = 5-3/5-7 = 2/-2 = -1

3 0

2 years ago

A grain of sand has a mass of 2.6 × 10–3 gram. A grain of salt has a mass of 6.5 × 10–2 gram. How many times greater is the mass

myrzilka [38]

Answer:

Step-by-step explanation:

2.6 x10^-3= .0026

6.5 x10^-2=.065

.065/.0026=25

5 0

3 years ago

Dave delivered 52 newspapers in all. saturday & sunday. he delivered 8 more newspapers on sunday than on saturday. how many

mihalych1998 [28]

Sat + Sun = 52
Sun = Sat + 8

Sat + Sat + 8 = 52
2Sat + 8 = 52
2Sat + 8-8 = 52-8
2Sat = 44
2Sat/2 = 44/2
Sat = 22

Sun = 22 + 8
Sun = 30

Check
Sat + Sun = 52
22 + 30 = 52
52 = 52

6 0

2 years ago

Fifteen people have been exposed to a particular disease. Each one independently has a 40% chance of contracting the disease. A

valina [46]

Answer: e. .0950

Step-by-step explanation:

Let X be the number of people that can be cure from disease.

Since each people independently has a 40% chance of contracting the disease.

So , $X\sim Binomial(n=15,p=0.40)$