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Mathematics : asked on sonynwz8570
 01.07.2020

You just received your final exam score from your teacher. At the top of an exam, it says you missed five questions and got 33 out of 38 questions correct, for a score of 78%. You think your teacher may have made an error when calculating your percentage. Which sentence best describes the test score you received?

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09.07.2023, solved by verified expert
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Sachin Kumar
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You just received your final exam score from, №18009804, 01.07.2020 02:22
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Mathematics
You just received your final exam score from your teacher. At the top of an exam, it says you missed five questions and got 33 out of 38 questions correct, for a score of 78%. You think your teacher may have made an error when calculating your percentage. Which sentence best describes the test score you received?
Step-by-step answer
P Answered by Specialist

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You just received your final exam score from your teacher. At the top of an exam, it says you missed
Mathematics
Imran is paid ?286 per week Every week he puts 20% of his wage into a savings account How much does he put into his savings each week
Step-by-step answer
P Answered by PhD

The answer is in the image 

The answer is in the image 
Mathematics
You can buy jars of the same jam in 2 sizes large jar:440g for £1.54 small jar:340g for £1.26 By considering the price per gram, work out which jar is the best value for money. Working must be shown
Step-by-step answer
P Answered by PhD
Answer: 440 grams for 1.54 is the better value
Explanation:
Take the price and divide by the number of grams
1.54 / 440 =0.0035 per gram
1.26 / 340 =0.003705882 per gram
0.0035 per gram < 0.003705882 per gram
Mathematics
The last time Robert filled up his car with gas, he paid $24.50 for 7 gallons. This time, he needs 15 gallons. If the price is the same, how much will he pay?
Step-by-step answer
P Answered by PhD

Cost of 7 gallons=$24.50

Cost of 1 gallon=24.50/7=3.5

Cost of 15 gallons=15*3.5=52.5

Cost of 15 gallons will be $52.5

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Deanna gets 3 problems incorrect on a math quiz. Her score is 85%. How many questions are on the quiz?
Step-by-step answer
P Answered by PhD

The answer is in the image 

The answer is in the image 
Mathematics
A new school randomly assigns a six-character student code to every prospective student. The school uses the characters 1, 2, 3, 4, 5, X, Y, and Z. If none of the student codes contain a repeated character, what is the total number of codes that can be randomly assigned?
Step-by-step answer
P Answered by PhD

The total nom of  code that can be used is equal to 5+3 = 8

Mathematics
The ratio of tables to chairs at the furniture store is 1:6. There are 30 chairs. How many tables are there?
Step-by-step answer
P Answered by PhD

The solution is in the following image

The solution is in the following image
Mathematics
The value of a collectible coin can be represented by the equation y = 2 x + 15, where x represents its age in years and y represents its total value in dollars. What is the value of the coin after 19 years? $2 $23 $38 $53
Step-by-step answer
P Answered by PhD

y=2x+15

where y=Value of coin

x=Age in years

Value of coin after 19 years=2*19+15

=$53

Therefore, Value after 19 years=$53

Mathematics
A 4300-N force from a car s engines produces an acceleration of 3.3 m/s2. What is the mass of the car? A. 4300 kg B. 1300 kg C. 14,000 kg D. 390 kg
Step-by-step answer
P Answered by PhD

F=ma

where F=force

m=mass

a=acceleration

Here,

F=4300

a=3.3m/s2

m=F/a

    =4300/3.3

    =1303.03kg

Approximately it is aqual to 1300kg

Mathematics
If a salesperson makes 6% commission, how much would they make from a $1,800 sale?
Step-by-step answer
P Answered by PhD

Salesperson will make 6% of 1800

=(6/100)*1800

=108

Salesperson will make $108 in $1800 sales

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