Someone helppppp me on this math problem
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Answer:
a) kg of plant food did Sheldon have left.
b) She need is kg and she don't have enough to left.
Step-by-step explanation:
Given : On Sunday, Sheldon bought kg of plant food. He used
kg on his strawberry plants and used
kg for his tomato plants.
To find :
a) How many kilograms of plant food did Sheldon have left? Write one or more equations to show how you reached your answer.
Solution :
Sheldon bought plant food kg.
He used strawberry plants kg.
He used tomato plants kg
Kilograms of plant food did Sheldon have left is given by,
Therefore, kg of plant food did Sheldon have left.
b) Sheldon wants to feed his strawberry plants 2 more times and his tomato plants one more time. He will use the same amounts of plant food as before. How much plant food will he need? Does he have enough left to do so?
Solution :
Sheldon wants to feed his strawberry plants 2 more times.
i.e. Strawberry plants used is kg.
His tomato plants one more time i.e. kg.
Total plant she need is
As
No she don't have enough to left.
Answer:
The travel time that separates the top 2.5% of the travel times from the rest is of 91.76 seconds.
Step-by-step explanation:
Normal Probability Distribution
Problems of normal distributions can be solved using the z-score formula.
In a set with mean and standard deviation
, the z-score of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
Mean of 80 seconds and a standard deviation of 6 seconds.
This means that
What travel time separates the top 2.5% of the travel times from the rest?
This is the 100 - 2.5 = 97.5th percentile, which is X when Z has a p-value of 0.975, so X when Z = 1.96.
The travel time that separates the top 2.5% of the travel times from the rest is of 91.76 seconds.
The area of the triangle PQR is 17.6 square units.
Explanation:
Given that the sides of the triangle are PQ = 12 and PR = 3 and
We need to determine the area of the triangle PQR
<u>Area of the triangle:</u>
The area of the triangle can be determined using the formula,
Substituting the values, we get,
Simplifying, we have,
Multiplying the terms, we have,
Dividing, we get,
Rounding off to the nearest tenth, we have,
Thus, the area of the triangle PQR is 17.6 square units.