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:
8%
Step-by-step explanation:
Let's say the tax percent was x%. Then, we can write the equation:
4.75 + x% * 4.75 = 5.13
Notice that both terms on the left have 4.75 so factor that out:
4.75 * (1 + x%) = 5.13
Divide both sides by 4.75:
1 + x% = 5.13/4.75 = 1.08
Subtract 1 from both sides:
x% = 0.08
Remember that % simply means "out of 100", so x% = x/100:
x/100 = 0.08
Multiply both sides by 100:
x = 8
Thus, the tax rate is 8%.
Hope this helps!
The answer is: "
28 " .
___________________________________________________ "
Twenty-eight (28) students said they would vote for Brianna."
___________________________________________________Explanation:___________________________________________________We are given, in the problem, that there are "45 students total" .
___________________________________________________The fraction:
can be reduced as follows:
![\frac{56}{90} = (56÷2) / (90÷2) = [tex] \frac{28}{45}](https://tex.z-dn.net/?f=%20%5Cfrac%7B56%7D%7B90%7D%20%3D%20%2856%C3%B72%29%20%2F%20%2890%C3%B72%29%20%3D%20%5Btex%5D%20%5Cfrac%7B28%7D%7B45%7D%20)
.
___________________________________________________Thus, "
28 students out of 45 students voted for Brianna" .
___________________________________________________The answer is: "
28 students" .
___________________________________________________Hope this helps!
___________________________________________________
Answer:
The answer is option A) X + 2
Step-by-step explanation:
Any polynomial of order n can be expressed in terms of their roots in factors of the form
(x-a)(x-b)(x-c)(x-d)....... = 0
Where a,b,c,d,... are the roots of the polynomial
In the example shown
(x+2) = (x-(-2))
And -2 happens to be the root of the polynomial in question
