Answer:
Ab -c
Step-by-step explanation:
multiply both sides by B
Then subtract C Brainliest please!
Answer:
y-int=(0,40.5), x-int=(-18,0)
Step-by-step explanation: First you need to calculate the slope, which is 9/4. Then plug in a point into the y=mx+b, or slope intercept, equation using that slope.
9=(9/4)x+b. You'll get b is 40.5 which is y-int. Then plug in 0 for y and solve for x, which is your x int coordinate.
Answer: x children and (481-x) adults.
1.25x +2.25(481-x) = 865.25
1.25x +1082.25 -2.25x =865.25
x= 217
so 217 children and 481-217 = 264 adults
hope this helped <333
Answer:
80 Students were surveyed.
Step-by-step explanation:
To find the answer we need to do a Rule of Three. The Rule of Three is a Mathematical Rule that will help us to solve problems based on proportions.
1. I know that a 65% of students are 52 students. I need to know how many students represent that 100%.
2. So if 52 students mean _____ 65%
X students mean _____ 100%
Pay attention here. We have to put the same elements in the same columns. Students with studients and percentage with percentage.
3. Now I have to cross these details. I have to multiple 52*100. So:
52*100= 5200
4. Then divide that result by 65.
5200/65= 80
5. So 80 is the total number of students surveyed.
x
=
−
7
or
x
=
−
8
Explanation:
Find a pair of factors of
56
with sum
15
.
The pair
7
,
8
works in that
7
⋅
8
=
56
and
7
+
8
=
15
Hence:
0
=
x
2
+
15
x
+
56
=
(
x
+
7
)
(
x
+
8
)
So:
x
=
−
7
or
x
=
−
8
Alternative method
