Answer:
(a) 84.2
(b) 10.6
Step-by-step explanation:
To solve this questions we can use the standardization formula, where we know that if
then 
So for
(a) we know that the z score for the 70th percentile is 0.524, so using the normalization equation we have


(b) We can procede as above and get

Do you have a picture of the question?
11.5 cm
33/2 = 16.5
16.5 - 5 = 11.5
Double Check
11.5 + 21.5 = 33
Answer:
∣∣5∣∣+∣∣−7∣∣+∣∣9∣∣+∣∣−13∣∣
Step-by-step explanation:
Answer:
Step-by-step explanation:
c + a = 342 ..................... <em>(1)</em>
5c + 12a = 2550 ........... <em>(2)</em>
- 5 × <em>(1)</em> + <em>(2)</em>
7a = 840
<em>a = 120</em>
<em>c</em> = 342 - 120 <em>= 222</em>