Answer:
there are 1/4 cups of Super Grain Cereal in the mixture
Explanation:
Super Grain cereal provides 240 calories per cup. Thus, for s cups of Super Grain cereal, there will be 240s calories
Crunchy Grain cereal provides 210 calories per 3/4 cups. Thus, 210 ÷ 3/4 per cup.
210 ÷ 3/4 = 280 calories, For c cups of Crunchy Grain cereal, there will be 280c calories
Jennifer mixes c cups of Crunchy Grain cereal, having 280 calories and s cups of Super Grain cereal, having 240 calories to get a final 1 cup mixture containing 270 calories, which can be expressed mathematically as:
280c + 240s = 270 ------- eqn(1)
Since, s cups of Super Grain cereal and c cups of Crunchy Grain cereal equals 1 cup, of the final mixture
c + s = 1 ------- eqn(2)
from eqn(2),
c = 1 - s
substitute c = 1 - s into eqn(1)
280(1 - s) + 240s = 270
280 - 280s + 240s = 270
- 40s = 270 - 280
-40s = -10
s = (-10)/(-40)
s = 1/4
Therefore, there are 1/4 cups of Super Grain Cereal in the mixture
Ans B
(Hope this helps can I pls have brainlist (crown)☺️)
The serving made by Jennifer on Tuesday contains 1/4 cup of Super Grain cereal. Thus, option B is correct.
What is the mathematical expression?The mathematical expression is given as the representation of the quantities in terms of variables.
The complete question is given in the image attached below.
The serving of 3/4 cup of Crunchy cereal = 210 calories
The serving of x cup of Crunchy cereal = 210/3/4 * x
The serving of x cup of Crunchy cereal = 280x calories
The serving of 1 cup Super Grain cereal = 240 calories
The serving of y cup of Super Grain cereal = 240y calories
The total serving made by Jennifer on Tuesday = 270 calories
280x + 240y = 270 calories
The serving made by Jennifer = 1 cup
x + y = 1 cup
x = 1 - y
Substituting the value of x in the equation of calorie:
280 (1 - y) + 240y = 270
280 - 280y + 240y = 270
280 - 270 = 280y - 240y
y = 1/4
The serving of super grain cereal made by Jennifer on Tuesday was y cup. Thus, super grain cereal in one cup was 1/4. Hence, option B is correct.
Learn more about mathematical expression, here:
https://brainly.com/question/14462529
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A researcher conducts a repeated-measures study comparing two treatment conditions (before and after) with a sample of n = 20 participants and obtains a t statistic of t = 4.21. What is the correct decision for a one-tailed test
Answer:
Reject the null hypothesis with a one-tailed test but fail to reject with two tails
Explanation:
at city high school the sophomore class has 60 students and the freshman class the junior class has 50 fewer students than twice the students in the freshman class the senior class is three times as large as the freshman class if there are a total of 1424 students at city high school how many students are in the freshman class
Answer:
Explanation:
Freshman: x students
Sophomore: 60 students
Junior: 2x - 50 students
Senior: 3x students
Total: 1424 students
Add all these together, it will be equal to 1424.
x + 60 + (2x - 50) + 3x = 1424
x + 60 + 2x - 50 + 3x = 1424
x + 2x + 3x + 60 - 50 = 1424
6x + 10 = 1424
6x + 10 - 10 = 1424 - 10
6x = 1414
[tex]\frac{6x}{6} = \frac{1414}{6}[/tex]
x = 235.67
The freshman class has either 235 or 236. 236 would make sense if we round it off.
But if freshman class has 236 students, the total would be 1426. If it has 235 students, the total would be 1420.
It's kinda weird. I don't know if I miss anything.
Kể về một kỉ niệm của một người thân trong gia đình Ngữ Văn 9
.............what-??????