₦airaland Forum

Pious101:
Who can solve this...am kind of confuse

The sign ) is multiplication, and
The sign ( is division

pimpchi:
Wrong

lol. the solution is what I have provided for you

pimpchi:
Solve and show workings

(a) Given:
Speed for the journey = 380 km
Total time taken for the journey = 4hours

The journey was in two parts.
First part of the journey was on the motorway and the second part was on the country road

Let x and y represents the distance and time taken respectively for the journey in the first part (on the motorway);
Therefore, the speed on the motorway is calculated as x ÷ y = 110 km/h
x = 110y ...... Eqn 1

To get equation 2, let's find the expression for speed on the country road
Distance on the country road = 380km - x
Time spent on the country road = 4hrs - y
Therefore, the speed on the country road = (380 - x) / (4- y) = 70km/h,
380 - x = 70(4 -y),
380 - x = 280 - 70y,
380 - 280 = x - 70y,
x - 70y = 100 ....Eqn 2

Therefore, these are the simultaneous equations
x = 110y ...Eqn 1
x - 70y = 100 ...Eqn 2


(b) Solving the equations;
Sub for x in eqn 2 using eqn 1,
x - 70y = 100,
110y - 70y = 100
40y = 100
y = 100/40 = 2.5 hours

sub for y in eqn 1,
x = 110y,
x = 110 (2.5),
x = 275km
Therefore the distance covered on the motorway is 275km

@pimpchi
Feel free to ask questions.

pimpchi:
First correct answer gets the airtime

(a) Given:
Speed for the journey = 380 km
Total time taken for the journey = 4hours

The journey was in two parts.
First part of the journey was on the motorway and the second part was on the country road

Let x and y represents the distance and time taken respectively for the journey in the first part (on the motorway);
Therefore, the speed on the motorway is calculated as x ÷ y = 110 km/h
x = 110y ...... Eqn 1

To get equation 2, let's find the expression for speed on the country road
Distance on the country road = 380km - x
Time spent on the country road = 4hrs - y
Therefore, the speed on the country road = (380 - x) / (4- y) = 70km/h,
380 - x = 70(4 -y),
380 - x = 280 - 70y,
380 - 280 = x - 70y,
x - 70y = 100 ....Eqn 2

Therefore, these are the simultaneous equations
x = 110y ...Eqn 1
x - 70y = 100 ...Eqn 2


(b) Solving the equations;
Sub for x in eqn 2 using eqn 1,
x - 70y = 100,
110y - 70y = 100
40y = 100
y = 100/40 = 2.5 hours

sub for y in eqn 1,
x = 110y,
x = 110 (2.5),
x = 275km
Therefore the distance covered on the motorway is 275km

@pimpchi
Feel free to ask questions.

igboarenice:
4. answer is 18
5. answer is 4.5(can't swear with my life on this)

lol, you're wrong for question 5.
Answer to question 5 is 3

naijacovid:
Mathematicians please help

Example 1; (2 × 2) ÷ 1 = 4
Example 2; (10 × 1) ÷ 5 = 2

HopeVictor:
2x-7y=3 eq1 it's a simultaneous equation where is eqn2?

lol. It's complete. Answer is 2³ which is 8

For example 1,
2² + 4² = 20
2 × 4 = 8

For example 2,
5² + 10² = 125
5 × 10 = 50

Ndokwagirl:
Sweetheart I want to appreciate you for everything you have done for me, many people here called you fake and insulted you because of me,some were discouraging you with words of insults but you stood your ground for me.
I never saw this moment coming but it has become a reality.
You warned me not to mention but Asanwa I must mention you to show my appreciation, if you see this post please don't be angry with me .

Thank you so much and I wish everyone here good luck

congratulations

Something is definitely wrong with that question. No way to get our first term

Jazzman01:
Question No 1 Excersise K1. You don't have to convert to Newton again like NDSMELODY erroneously did it. Most spring balance are calibrated directly in Newtons or they may have dual scales of Newton and gram. The question here is straight forward, it says Newton.

His conversion is even wrong because he converted it from kg to Newton. (1Kg = 9.8N or approximately 10N) and spring balance are not calibrated in Kg because most of them are small and can only suspend small loads so they are calibrated in dual scales of Newton and grams.

you're right

NDSMELODY:
this is part A, B has been done already

this your calibration is not necessary. The question is direct and straight forward

NDSMELODY:
check this,NOTE;these solutions are for aspect of electricity only as i cant view the last part clearly on my phone,u can snap it clearly again and then upload it.

your answer to question 3(d) is wrong

paulolee:
earth isnt flat, it rotates around the sun ..

No. The planet earth exhibits two motion types at the time. Earth rotates on its polar axis (the earth pole). That one brings day and night. Takes 24hours to make one complete rotation.

The second one is the revolution of the earth around the sun. This revolution takes 365¼ days to complete.

Mrshape:
These are shapes.
This is my specialty.
How much will you pay for the service?

Yes o. This shouldn't be free..

kunmisola:
B.A! B.A!! B.A!!!
It's the Lord's doing and it is marvelous in our sight. We welcome our princess this evening via v.d with plenty tears weighing 3.3kg.
DOB: 21/12/2020
EDD: 22/12/2020.
I pray that for all remaining december mamas that you will all give birth safely and all TTC mamas by this time next year, you will all carry your bundle of joy. Till 2022
@cappo sunbestie B.A submitted.

Congratulations to you dear.

Juliusmomoh:
Good day nairalander...
.
I have been having double feeling about this..
.
Is neco result accepted outside nigeria ?
.
I want to apply for an on-going schoolarship to one country outside nigeria, but is neco result accepted outside nigeria ?
.
Please help a brother with advice..

Yes

Nbotee:
How can Neco b accepted outside dis country wen even some skools in the country do not consider it.. WAEC is what is recognized

lol.. You're wrong

LisaAnne:
We cannot upload picture in peace again

happy birthday

introvert2:
my workings, not sure if its correct.
x²+6x+11=4^½. x²+6x+11=2. x²+6x+9=0. x²+3x+3x+9=0. x(x+3)+3(x+3)=0. x=-3twice.

this one is absolutely correct!

Curie246:
Hi beautiful people please I need your advice,

I got admission at Cranfield university for Msc welding. Engineering and also Msc in Nuclear and Environmental Physics at university of Glasglow.

Please I don’t know which school to accept.

Nuclear and Environmental physics is the deal. Very hot cake

Congrats to him

Istan2020:
Am I the only one seeing different unusual threads by new monikers on Nairaland this midnight?

I suspect this is a spambot attack.

it's been like that for almost 2 months now

harley88:
33k is too low

can u deliver in Ibadan?

Awon ole gbogbo

Let's can a spade a spade, these people are not mere opportunists but thieves

harley88:
LG LED TV 32inches for sale.
7 months old and barely used. Its in perfect condition. Comes with the wall bracket and shelf stand.
Price: 50k
COMES WITH RECEIPT from LG store

can you deliver in Ibadan. 33k?

DICKstractor:
1) 9+9+3=21


2) 1+2+3+4=10

Therefore:
10+10+10=30

3) 15


4) 9+9*45=414

Check the number of rays of light from the bulb.. There are 5 rays in the 3rd expression but there are only 4 rays in each of the bulb in the question

Obinoscopy:
It's a bit tricky but you can try.

9+9×36 = 9 + 324 = 333


Answer is 333

Coming from a drunk man and you want us to believe your story.. E go hard oo..

Na goat you saw not ghost.. Lol

favor914:
Exactly, but not any state High Court, from the office of the Chief Judge of The State, Probate division in the state capital.

happy birthday dear