Answer:
1.95
Step-by-step explanation:
area = (1/2 ×1 ×1 )×3 = 1.5 ( for sides)
area = ( 1/2 ×1 ×0.9) = 0.45 for base
area =1.5+0.45 = 1.95
Answer:
0.677
Step-by-step explanation:Add up the values in the plan A column. There are 10+12+16 = 38 people who prefer plan A.
Add up the values in the "40-49" row to find that 16+8 = 24 people are ages 40 to 49.
We have 38+24-16 = 46 people who either prefer plan A, are aged 40-49, or fit both descriptions. I subtracted off 16 because those 16 people were counted twice when adding 38 and 24.
An alternative way to get this value of 46 is to add up everything that is in column1 or row 3 (or both). So that would get 10+12+16+8 = 46.
Now add up everything in the table to find out how many people were surveyed total. That would be 10+7+12+15+16+8 = 68 people overall.
The probability of someone liking plan A, or being age 40-49, or both is 46/68 = 0.6765 approximately. Rounding to 3 decimal places gives 0.677
X=40.
-6x+10x=160
4x=160 divide by 4 on both sides
And your answer is 40
Answer: ( d.)She is giving the students time to practice to promote their metacognition.
Step-by-step explanation:
Metacognition can be explained as one’s ability to use previous knowledge to plan a method for approaching a learning challenge, take adequate steps to solve the problem, look back on and evaluate gotten results, and modify one’s approach to the next challenge. It helps learners to be able to select the right cognitive tool for each task and plays a vital role in successful learning.
The teacher in the above question is only trying to improve her student's awareness of their own knowledge.
She is also building the students ability to think in order to solve future challenges they would face in mathematics.
