Answer:
Step-by-step explanation:
<u>Two ways to solve</u>
1.) Expand each term in the equation
- 7x = x · x · x · x · x · x · x
- 6x = x · x · x · x · x · x
- Count all the x’s ⇒ There are 13 x’s ⇒ 13x
2.) Add the coefficients
Hence,
Answer = 13x
Answer:
(1,4)
Step-by-step explanation:
y=x+3
y=4x
Substitute the second equation into the first equation
4x = x+3
Subtract x from each side
4x-x = x-x+3
3x =3
Divide each side by 3
3x/3 =3/3
x =1
Now we need to find y
y =4x
y = 4*1
y=4
Answer: Total distance travelled is 510 km
Step-by-step explanation:
it is given that an automobile travels for
2 hours at 80km/h
3 hours at 110km/h
30 min at 40km/h
to find distance=x(let)
since
distance = speed * time
so
x= 80*2 +110*3 +40*(1/2) [since 1 hour =60 min so 30 min =1/2 hour]
x=160+330+20
x=510
hence total distance travelled is 510 km
Learn more about kinematics here
brainly.com/question/28493318
#SPJ9
Answer:
228 cm
Step-by-step explanation:
the average is calculated as
average = , then
= 140 ( multiply both sides by 10 to clear the fraction )
sum = 1400
let the height of new pupil be x , then
= 148 ( multiply both sides by 11 )
sum + x = 1628 , that is
1400 + x = 1628 ( subtract 1400 from both sides )
x = 228
height of new pupil is 228 cm
Answer:
Solution given:
1 kg =1000g
1g=1000mg
now
1kg=1000g=1000×1000mg=1000000mg