Answer:
She needs a grade of 71 on her next text.
Step-by-step explanation:
Mean of a data-set:
The mean of a data-set is the sum of all values in the data-set divided by the number of values.
Tammy has scored 82, 78, and 93 on her previous three tests.
Thus, her grades are 82, 78, 93 and x, in which x is her grade in the fourth test.
There are 4 tests.
What score does she need on her next test so that her average (mean) is 81?
We have to find x when the mean is 81. So
She needs a grade of 71 on her next text.
Answer:
x=6
Step-by-step explanation:
Answer:
If the number being multiplied by -1 is positive it just turns it negative, but if the number being multiplied by -1 is also negative it becomes positive. Basically if flips the sign.
Step-by-step explanation:
EX) 25 x -1 = -25
EX) -25 x -1 = 25
Step-by-step explanation:
Given that the base of triangle is 9/4 times of its height . And area is 144 cm² . Let the height be h , then its base be 9h/4 .
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Therefore ,
- Height = h = 8cm .
- Base ,= 9h/4 = 18cm .
2(2x + 1) = 4x + 2
4x + 2 = 4x + 2
All real numbers are solutions :)
