Answer:
(x+5)
Step-by-step explanation:
Here, (x + 5) matches your answer choices
It's 93.
simple calculate it by:
(76+68+83+x)/4=80
then 73*5-(67+75+73+69)=x
where x here is the grade needed to reach an av. of 80. 4 is the number of tests.
*common answer*
Answer:
To distribute means to divide something or give a share or part of something. For example, for the problem <em>4</em><em>(</em><em>6</em><em>+</em><em>2</em><em>)</em>, you would use the distributive property and distribute the 4. Making the end result, <em>2</em><em>4</em><em>+</em><em>8</em>.
Rational expression refers to a fraction in which the numerator and denominator are polynomials.
9514 1404 393
Answer:
(x, y) = (3, 12)
Step-by-step explanation:
Using the given variable definitions, we can write the equations ...
y = x + 9
2(x +y) = 30
__
Solving the second equation for y, we have ...
y = 15 -x
Substituting this into the first equation gives ...
15 -x = x +9
6 = 2x . . . . . . . . . add x-9
3 = x . . . . . . . . . . divide by 2
y = 3+9 = 12 . . . . substitute into the first equation
The numbers are (x, y) = (3, 12).
