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What is the difference between the preterite and the imperfect past tense?

The preterite tense is used when we are describing something that happened once in the past with a given time, for example: 'I picked up the phone last Tuesday when he called me'. The imperfect tense is u...

Answered by India W. • Spanish tutor

1950 Views

The perimeter of an isosceles triangle is 16cm the lengths of the sides are (x+3)(this is the length of the opposite side as well) and (x+4). Determine the value of x .

Write out all the information you have into one single equation, you know that the perimeter is the sum of the lengths of the sides of the triangle so write out the information as follows. x+3 + x+3...

Answered by Eve A. • Maths tutor

6064 Views

How would you solve the simultaneous equations 2x + y = 7 and 3x - y = 8

To solve a pair of simultaneous equations you need to find the values of x and y which are the same for both equations. To do this you should eliminate one of the unknowns - in this instance it can easily...

Answered by Kenna H. • Maths tutor

3839 Views

If an equation of a line is y=2x+4 and it crosses the x axis at point R, what is the value of x?

Since we know that the line crosses the x axis, we can assume that the value of Y at this point is 0. So we must substitute y = 0 into the equation y = 2x + 40 = 2x + 4we now have to isolate x on its own ...

Answered by Abigail C. • Maths tutor

3612 Views

Josie walks into her house from outside, as she enters a dark room, a spider falls in front of her face, describe the changes that occur in the eye to visualise a close up object in the dark.

This question aims to address the following learning objective:To be able to relate the structures of the eye to their functions. This includes: accommodation to focus on near or distant objects and adapt...

Answered by Michaela G. • Biology tutor

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