Answer:
f(- 4) = 12
Step-by-step explanation:
To evaluate f(- 4) substitute x = - 4 into f(x) , that is
f(- 4) = - 8 - 5(- 4) = - 8 + 20 = 12
Answer: the third answer (C)
Step-by-step explanation:
Answer:
46
Step-by-step explanation:
Let
represent a number with
in the ten's position and
is the one's position.
This means
actually has value of
.
We are given the sum of those digits of
is 10; this means
.
It says if 18 is added to the number
, then the result is
.
So
has value
and
has value
.
We are given then:


Subtract
on both sides:

Simplify:

Subtract
on both sides:


Divide both sides by 9:

Rearrange by commutative property:

So the system of equations we want to solve is:


-------------------------Add equations together (this will eliminate the variable
and allow you to go ahead and solve for
:


Divide both sides by 2:

Simplify:

If
and
, then
.
since 4+6=10.
So the original number is (46).
18 more than 46 is 18+46=(64) which is what we wanted.
We also have the sum of 4 and 6 is 10 as well.
Part A
blueberries
2/8 × 6/1(drinks) = 12/8cups
banana slice
5/8 × 6/1(drinks) = 30/8cups
30/8 + 12/8 = 42/8 cups<---- that's the answer
Part B
yogurt
4/8 × 6/1 (drinks) = 24/8 cups of yogurt <---
and 6 drinks × 1 cups of ice = 6 cups of ice <---
Answer:1/2(2)(4.4)(5) + 1/3(1/2)(2)(4.4)(3.9)