Answer:
7 trophies for $49.00
5 trophies for $30.00
-----------------------------------
Explination:
It says that she wants to pay no more than 7 dollars for each trophy she buys, which means 7 and less. So we have to multiply 7 x the number of trophies, And if it gives you the excact number or less its correct.
So we multiply
7 x 7 = 49 (The excact number, correct)
9 x 7 = 63 (The price they are selling it at is higher, incorrect)
12 x 7 = 84 (The price they are selling it at is higher, incorrect)
5 x 7 = 35 (Paying less, Correct)
3 x 7 (The price they are selling it at is higher, incorrect)
---------------------------------------------------------------------------------------
Its really easy if you put your mind into it! Goodluck <3
Answer:
the correct answer is:
68 + x + ( x-24) =180
x + (x-24) = 112
2x - 24 = 112
2x = 112 + 24
2x = 136
x = 68
so ...for another : 68 - 24 = 44
Answer:
Step-by-step explanation:
So if their is 65% of 20 tables with 6 chairs that's 13 tables.
And if their is 35% of 20 tables with 4 chairs that's 7 tables.
Answer:
Hence,
a) The probability that the sample average would be less than 90 pounds is 0.0210.
b) The probability that the sample average would be between 98 and 105 pounds is 0.5045.
c) The probability that the sample average would be less than 112 pounds is 0.9935.
d) The probability that the sample average would be between 93 and 96 pounds is 0.1341.
Step-by-step explanation:
a) ![P(X < 90) = P(Z < (90 - 99.9) / (30\sqrt(38)))](https://tex.z-dn.net/?f=P%28X%20%3C%2090%29%20%3D%20P%28Z%20%3C%20%2890%20-%2099.9%29%20%2F%20%2830%5Csqrt%2838%29%29%29)
= P(Z < -2.03) = 0.0210
b )![P(98 < x](https://tex.z-dn.net/?f=P%2898%20%3C%20x%20%3C105%29%20%3D%20P%28%2898%20-99.9%29%20%2F%20%2830%20%5Csqrt%2838%29%29%20%3C%20Z%20%3C%20%28105%20-99.9%29%20%2F%20%2830%20%5Csqrt%2838%29%29%29)
= P(-0.39 < Z < 1.05) = 0.5045
c ) ![P(X < 112) = P(Z < (112 - 99.9) / (30\sqrt(38)))](https://tex.z-dn.net/?f=P%28X%20%3C%20112%29%20%3D%20P%28Z%20%3C%20%28112%20-%2099.9%29%20%2F%20%2830%5Csqrt%2838%29%29%29)
= P(Z < 2.49) = 0.9935
d )![P(93 < x < 96) = P((93 -99.9) / (30 \sqrt(38)) < Z < (96 -99.9) / (30 \sqrt(38)))](https://tex.z-dn.net/?f=P%2893%20%3C%20x%20%3C%2096%29%20%3D%20P%28%2893%20-99.9%29%20%2F%20%2830%20%5Csqrt%2838%29%29%20%3C%20Z%20%3C%20%2896%20-99.9%29%20%2F%20%2830%20%5Csqrt%2838%29%29%29)
= P( -1.42 < Z < -0.8 )
= 0.2119 - 0.0778 = 0.1341
Answer:
3 : 1
Step-by-step explanation:
180 out of 240 sold online so (240 - 18) sold in store
180 : 60
18 : 6
3 : 1