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Kaylis [27]
3 years ago
5

It takes 68 days for John to plants to grow 3 centimeters. About how many weeks is that? The answers choices are as follow : abo

ut 10 week; about 12 weeks; about 14 weeks; or about 15 weeks.
Mathematics
2 answers:
Nesterboy [21]3 years ago
5 0
We know that there are 7 days in a week, so just divide 68 ÷ 7 and you should get 9.71 which is approximately 10 weeks
mars1129 [50]3 years ago
5 0
7 days a week 
68 days = 9 weeks 5 days 
So about 10 weeks! hope this helps :)
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1600(-400)= f is the y axis and -400 because its taking money from his account
3 0
3 years ago
Expand (2+x)^-3<br><br><br><br><br><br><br><br> ....
pentagon [3]

Answer:

1/(x^3 + 6x^2 + 12x + 8)

Step-by-step explanation:

The first thing we do is rationalize this expression. (2+x)^-3 is written as

1/(2+x)^3

Then from there we can foil out the denominator. It is easiest to foil (2+x)(2+x) first and then multiply that product by (2+x).

(2+x)(2+x) = 4 + 4x + x^2

(4+4x+x^2)(2+x) = 8+8x+2x^2+4x+4x^2+x^3.

Then we combine like terms and put them in order to get:

x^3 + 6x^2 + 12x + 8

And of course we can't forget that this was raised to the negative third power, so our answer is 1/(x^3 + 6x^2 + 12x + 8)

6 0
2 years ago
Read 2 more answers
Seven more than a number is more
GalinKa [24]

Answer:

x+7>

Step-by-step explanation:

7 0
2 years ago
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scientist needs 120 liters of a 20% acid solution for an experiment. The lab has available a 25% and a 10% solution. How many li
sattari [20]

Answer:

The scientist needs 80 liters of 25% solution and 40 liters of 10% solution.

Step-by-step explanation:

If x is the liters of 25% solution, and y is the liters of 10% solution, then:

x + y = 120

0.25x + 0.10y = 0.20(120)

Solve the system of equations using substitution or elimination.  Using substitution:

0.25x + 0.10(120 − x) = 0.20(120)

0.25x + 12 − 0.10x = 24

0.15x = 12

x = 80

y = 40

The scientist needs 80 liters of 25% solution and 40 liters of 10% solution.

4 0
2 years ago
Help please It would mean a lot
Vera_Pavlovna [14]

the answer is 3/5

if that's not right I apologize

6 0
3 years ago
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