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Anettt [7]
2 years ago
10

emma has 15 cookies and eats 2 cookies per day evan has 45 cookies and eats 8 each day how would you write and solve an equation

to figure out after how many days they will have the same number of cookies
Mathematics
2 answers:
erastovalidia [21]2 years ago
7 0
Lets say cookies = x and days = y.

2x times y = 15.

8x times y = 45.
scZoUnD [109]2 years ago
3 0

Solution:

we are given that

Emma has 15 cookies and eats 2 cookies per day.

So the number of cookies left after n days can be written as

Emma=15-2n

Evan has 45 cookies and eats 8 each day.

So the number of cookies left after n days can be written as

Evan=45-8n

Number of days after which they will have equal number of cookies can be found as below

15-2n=45-8n

8n-2n=45-15

6n=30

n=5

Hence both will have equal number of cookies after 5 days.

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If rhe discriminant of a quadratic equation is equal to -8 which statement describes the roots
Nastasia [14]

Answer:

Step-by-step explanation:

Given

Discriminant = -8

Required

Determine the type of roots

Represent Discriminant with D; such that

D = -8

D is calculated as thus

D = b^2 - 4ac

And it has the following sequence of results

When D > 0; then the roots of the quadratic equation are real but not equal

When D = 0; then the roots of the quadratic equation are real and equal

When D < 0; then the roots of the quadratic equation are complex or imaginary

Given that D = -8; This means that D < 0; and base on the above analysis, we can conclude that the roots of the quadratic equation are complex or imaginary

6 0
3 years ago
How much will a person pay for 7.5 pounds of bananas at a price of $2.07 per pound?
igomit [66]

Answer:

$15.57

Step-by-step explanation:

2.07 times 7.50 = $15.57!

7 0
3 years ago
Susan has 50% more books than Michael. Michael has 40 books. If Michael buys 8 more books, will Susan have more or less books th
ololo11 [35]

Answer:

Susan has more books than Michael.

Step-by-step explanation:

If Susan has 50% more books and Michael has 40 books, that means Susan has 1.5 times 40 = 60

40 + 8 = 48

60 is more than 48, so Susan has more books than Michael

7 0
3 years ago
Drew needs to air up his teams 8 soccer balls. Each ball has a diameter of 70cm. In terms of pi, what is the total volume of air
Liula [17]

Answer:

1.44m^3

Step-by-step explanation:

Given data

Number of balls= 8

Diameter of ball = 70cm = 0.7m

Radius= 35cm= 0.35m

We know that a ball has a spherical shape

The volume of a sphere is

V= 4/3πr^3

substitute

V= 4/3*3.142*0.35^3

V= 0.18m^3

Hence if 1 ball has a volume of 0.18m^3

Then 8 balls will have a volume of

=0.18*8

=1.44m^3

7 0
3 years ago
What is 243.875 rounded to the nearest tenth,hundreth,ten,and hundred?
ira [324]
Tenth: 243.9
hundreth: 243.88
ten: 240
hundred:200

hope this helps
5 0
3 years ago
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