3apples have a mean mass of 100 grams ,the largest apple is removed , the mean mass of the remaining two apples is 70 grams, what is the mass of the largest apple?

160 gm

Step-by-step explanation:

Mean =

100 =

So, the mass of 3 apples is 300 gm.

Now we are given that the largest apple is removed , the mean mass of the remaining two apples is 70 grams

So, mass of two apples is 140 gm

Total mass of 3 apples = 300 gm

So, mass of largest apple = 300 - 140 = 160 grams.

Hence the mass of the largest apple is 160 gm

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

1 x=22.52

2: 65/39=604+39x

65x-39x=604

26x=604

x=604/26

×=23.23