Answer:
53
Step-by-step explanation:
if f(a)= -11 the the equation is: 20-3(-11)
First, multiply -3 and -11:
20-3×(-11)
20+33
Now, add:
20+33= <u>53</u>
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Hope this helps!! <3
Answer:
b. 60
Step-by-step explanation:
We have been given a formula 
, where x represents the number of small vehicles and y represents the number of larger vehicles.
To find the number of small vehicles, we will substitute 
in the given equation as:
Therefore, 60 small vehicles were washed in total and option 'b' is the correct choice.
Hello!
We can first find RZ. A midpoint is the point right in the middle of a line segment. It splits the line into two equivalent lengths. If z is the midpoint of RT, it therefore splits RT into two equivalent segments, RZ and ZT. Thus, the length of RZ is equivalent to ZT, therefore, the length of RZ is 150.
Next, find RT. We know that RT is made of RZ and ZT, and we know the side lengths of both - 150 and 150. Therefore, add these two together to get the length of RT. 150 + 150 = 300.
Finally, find x. We know that RZ is equal to 150, and we are given 8x - 10 = RZ. Therefore, we know 8x - 10 = 150. Solve this equation for x by isolating x.
8x - 10 = 150
8x = 160
x = 20
Therefore, x = 20.
Your final answer is choice C: x = 20, RZ = 150, and RT = 300.
Hope this helps!
Answer:
Step-by-step explanation:
Put two rectanagles on top of each other
Divide one into fouth equal peices and one into eight equal peices.
Color 3 peices into the 4 peice shape
Color 6 peices into the 8 peice shape.
The 3/4 peices should be the same length of the 6/8 peices.
∠BDC=30, so ∠CBD + ∠BCD=180-30=150
ΔDBC is isosceles, so ∠CBD=∠BCD=half of 150=75
∠ABC=∠ABD-∠CBD=155-75=80
ΔABC is isosceles, so ∠ABC=∠ACB=80
∠BAC=180-80-80=20
