Easy
y=2x-7
sub 2x-7 for every y you se inother equation
x+2(2x-7)=1
x+4x-14=1
5x-14=1
add 14 both sides
5x=15
divide 5
x=3
sub back
y=2x-7
y=2(3)-7
y=6-7
y=-1
(3,-1) is solution
Answer:
Total number of students surveyed about their mode of transportation to school is 400.
Step-by-step explanation:
Here, given student who uses car as their mode of transport = 120 students
We have to find the total number of students who are surveyed.
Also, since complete circle represents 100% of data,
Total students who uses at least one mode of transport out of foot, bicycle, bus or car let it be x students.
Total percentage of students that uses bus, bicycle and on foot = (20 +15+35)% = 70%
Thus, percentage of students that uses car = 100 - 70 = 30%
Thus, 30 % of total students = 120
Mathematically, 30% of x = 120
Solving for x, we get,



Thus, total number of students surveyed about their mode of transportation to school is 400.
Answer:
The value of 7 in 678,901 is 10 times greater than the value of 7 in 67,890
Step-by-step explanation:
step 1
we have
678,901
Write in expanded form
678,901=600,000+70,000+8,000+900+1
The value of 7 is 70,000
step 2
we have
67,890
Write in expanded form
67,890=60,000+7,000+800+90
The value of 7 is 7,000
step 3
Divide 70,000 by 7,000

therefore
The value of 7 in 678,901 is 10 times greater than the value of 7 in 67,890