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White raven [17]
3 years ago
8

Set up an equation and solve for the unknown number.

Mathematics
1 answer:
Luda [366]3 years ago
8 0
Let x be the unknown number.

4+x=2x
4=2x-x
x=4
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Inverse sin(sin(4π/5) without using calculator find exact value​
Kruka [31]

Answer:

the exact value is 0

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Petrol at a place costs 187/ 4 Rs/litre. what is the cost of 35 litres of petrol ?
galben [10]

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4 years ago
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The perimeter of an isosceles triangle is 168mm.The base is 18mm more than each of the legs. what is the length of the longest s
Lina20 [59]

Answer:

The length of the longest side is 68mm

Step-by-step explanation:

The perimeter of a triangle is equals to the sum of all its sides

P=a+b+c

The triangle is isosceles, so two of its sides are equal, have the same length.

So: a=b, then

P=2a+c=168mm

Moreover, we know that the base is 18mm more than each of the legs, this means: c=18mm+a, where we obtain that a=c-18mm.

So, the system of equations is solved, lets use the above result in Perimeter`s equation.

168mm=2*(c-18mm)+C

From here we have:

168mm=3c-36mm

We obtain the following result: c= 68mm, this the length of the longest side

8 0
4 years ago
Line WS is parallel to line KV. Line RT is perpendicular to line KV. Explain the relationship of line RT to line WS. Provide at
Gala2k [10]

The product of the slope of the line RT and WS is equal to -1 if the line WS is parallel to line KV. Line RT is perpendicular to line KV.

<h3>What is a linear equation?</h3>

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

We have line WS is parallel to line KV. Line RT is perpendicular to line KV.

Let's suppose the slope for the line WS is m1, for the slope for the line KV is m2, and for the line RT is m3.

We know if the two lines are parallel, their slope will be the same mathematically,

m1 = m2

And if the two lines are perpendicular to each other, their product of the slope will be -1

Because the slope is given by:

\rm tan\theta = \dfrac{m_1-m_2}{1+m_1m_2}

If parallel, then tanθ = 0

\rm m_1 -m_2= 0\\m_1 =m_2

If perpendicular, then \rm tan\theta = \dfrac{1}{0}

\rm 1+m_1m_2 = 0\\m_1m_2 = -1

Thus, the product of the slope of the line RT and WS is equal to -1 if the line WS is parallel to line KV. Line RT is perpendicular to line KV.

Learn more about the linear equation here:

brainly.com/question/11897796

#SPJ1

7 0
2 years ago
How did you spend youre summer? 100+ words please
Sonja [21]

Our summer vacation would be spent in Chennai, where my maternal grandparents stayed. I would enjoy a lot there. Everyday in the afternoons my grandfather would buy me ice cream from a cyclecart vendor who would go from door to door selling ice creams.

When I was about 8 years both my maternal grandparents had passed away and our summer vacations in Chennai came to an end.

The rest of the years, vacations were spent in Mangaluru. We stayed in a sprawling bungalow with a huge compound which had lots of coconut, mango, sapota, gooseberry, jackfruit and jamun trees. Our water requirements were met from a well. We did not have municipal water connection. During summer the water in the well would nearly dry up. So the elders would be busy with water woes.

I being the elder one was expected to look after my younger sister and entertain her. I used to read a lot of Enid Blyton books, so I would make up interesting make believe characters and tell her stories . Even today after so many years she still remembers the stories I used to tell her.

When we were a little older we would hire bicycles by the hour and ride them. Afternoon would be too hot to play outside so along with our friends and neighbors who visited us, we would play board games like ludo, snakes and ladders and cards. We would play hide and seek, blind man's buff and LONDON London inside the house.

At 4pm we would run out with chilli powder and salt and climb mango trees and sitting on the branches eat unripe mangoes. Once when sitting and eating mangoes on a tree, we saw quite a huge ratsnake on a nearby branch. We quickly scrambled down in terror, hurting our knees and arms and ran home. After that incident we were more careful while climbing trees. Ratsnakes were common and even entered our tiled roof houses in search of rat preys.

We would play cricket with plastic bats and balls. There was no Tv in those days and if there was a cricket match in which India was playing, we would be glued to the radio listening to the commentary. Once a week we would go to cinema theatre to watch movies. My mom too was crazy about movies and we tried never to miss an Amitabh Bachchan movie.

Summer holidays meant lazing around, playing games and feasting on tender coconut water, mangoes, jackfruit, sapotas and gooseberries. My mother would make jackfruit patholis and muliks(konkani specialities) which we loved to eat.

The song ‘those lazy hazy crazy days of summer’ by Nat king cole always brings back happy memories of our childhood summer holidays.

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3 years ago
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