Karen missed 9 questions on the math exam. If she missed 20% of the questions, how many questions were on the exam all together?
2 answers:
Answer:
Karen missed 9 of the 45 questions on her mathematics exam. The exam had a total of 45 questions.
Step-by-step explanation:
If Karen missed 9 questions (which equals 20% of the exam), then she completed 80% of the exam.
9 questions = 20%
80% = x
To solve this, we can divide the number of questions missed (9) by 20%, which equals 45. Thus, Karen's test had a total of 45 questions!
Answer:
There were 45 questions.
Step-by-step explanation:
20 out of a hundred is one fifth. this one fifth of the test is nine questions. we want to find the whole number so we do 9 times 5 to get he other 80% which means 45 questions on the test.
You might be interested in
It would be a parallelogram since if you look closely the individual shapes are indeed parallelograms.
You would divide the total area by the length. 8 3/4 divided by 3 1/2 35/4 / 7/2 35/4 * 2/7 = 70/28 =2 1/2 ft
Answer:
LN = 17
Step-by-step explanation:
an estimate of what the line looks like:
L ———————M—————————— N
LN = LM + MN
= 7 + 10
= 17
4x-(5-x)=8[4-(8+2x-1)] answer: x= -19/21
S1=$70/20gal=$3.50 per gallon s2=$33.50/(50/4)gal=$2.68 per gallon s3=$48.75/(15+8)gal=$2.12 per gallon So supplier #3 has the best deal.