A ball pen costs Rs 3.50 more than pencil. Adding 3 ball pens and 2 pencils sum up to Rs 13. Taking y and z as costs of ball pen and pencil respectively. Write down 2 simultaneous equations in terms of y and z which satisfy the above statement. Find out the values of y and z.

From a cylindrical wooden log of length 30 cm and base radius 72 cm, biggest cuboid of square base is made. Find the volume of wood wasted?

Find the area of the figure. $GE equals 14 cm comma HF equals 10 cm comma AD equals 24 cm straight & BC equals 12$
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$y equals 2 x plus 4$
$y equals left parenthesis x minus 3 right parenthesis left parenthesis x plus 2 right parenthesis$
The system of equations above is graphed in the xy -plane. At which of the following points do the graphs of the equations intersect?

Note:
We can solve the equations by other methods too, but the method of substitution is most suitable here. Also, instead of solving
$x squared minus 3 x minus 10 equals 0$ by middle term factorisation, we could also use the quadratic formula, which is given by
$x equals fraction numerator negative b plus-or-minus square root of b squared minus 4 a c end root over denominator 2 a end fraction$
Where the standard form of equation is $a x squared plus b x plus c equals 0$

$y equals 2 x plus 4$
$y equals left parenthesis x minus 3 right parenthesis left parenthesis x plus 2 right parenthesis$
The system of equations above is graphed in the xy -plane. At which of the following points do the graphs of the equations intersect?

Find the area of an isosceles trapezium ABCD, if the parallel sides are 6cm and 14 cm, its non parallel sides is 5cm each.

$fraction numerator x minus 2 over denominator 3 end fraction plus fraction numerator y minus 1 over denominator 4 end fraction equals 13 over 12$ and $fraction numerator 3 plus y over denominator 3 end fraction plus fraction numerator x minus 2 over denominator 2 end fraction equals 11 over 6$ Solve by using the elimination method.

The sides of a parallelogram are 12cm and 8cm. one of the diagonal is 10cm long. If d is the length of the other diagonal, then which of the following is correct?

Cylindrical vessel of diameter 9 cm has some water in it. A cylindrical iron piece of diameter 6 cm and height 4.5 cm is dropped in it. After it was completely immersed, find the rise in the level of water.

During mineral formation, the same chemical compound can be come different minerals depending on the temperature and pressure at the time of formation. A phase diagram is a graph that shows the conditions that are needed to form each mineral. The graph above is a portion of the phase diagram for aluminosilicates, with the temperature t , in degrees
Celsius $open parentheses blank to the power of ring operator straight C close parentheses$ , on the horizontal axis, and the pressure p , in gigapascals (G Pa), on the
Which of the following systems of inequalities best describes the region where sillimanite can form?

Note:
We do not have the exact inequalities in the option, so we choose the one from the options which is the closest approximation of the inequalities that we have calculated. There are a couple of formulas and concepts used here, such as the equation of a line passing through two points and the concept that the region below a line is given by replacing the equality sign with less than or equal to in the standard form of the equation and vice versa.

During mineral formation, the same chemical compound can be come different minerals depending on the temperature and pressure at the time of formation. A phase diagram is a graph that shows the conditions that are needed to form each mineral. The graph above is a portion of the phase diagram for aluminosilicates, with the temperature t , in degrees
Celsius $open parentheses blank to the power of ring operator straight C close parentheses$ , on the horizontal axis, and the pressure p , in gigapascals (G Pa), on the
Which of the following systems of inequalities best describes the region where sillimanite can form?

If two angles and the included side of one triangle are congruent to two angles and the included side of a second triangle, then the two triangles are congruent by

Solve: $fraction numerator 1 over denominator 2 x end fraction plus fraction numerator 1 over denominator 3 y end fraction equals 2$ and $fraction numerator 1 over denominator 3 x end fraction plus fraction numerator 1 over denominator 2 y end fraction equals 13 over 6$ by using elimination method.

ABCD is a parallelogram of area 162 sq., P is the point on AB such that AP:PB = 1:2, calculate the area of Triangle APD and the ratio PQ:QD, where Q is the point of intersection of AC and PD

How many litres of water flows out through a pipe having an area of cross-section of 5 cm² in one minute, if the speed of water in pipe is 30 cm/sec?

Curved surface area of a right circular cylinder of height 14 cm is 88 cm². Find the volume of the cylinder.

The sides of a parallelogram are 3cm and 2cm and the distance between two longer sides is 1.5cm. Find the distance between the shorter sides?