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Use any letter for the number, for example, x. The equation is:
x + x2 = 90
This should be converted to standard form before proceeding:
x2 + x = 90
x2 + x - 90 = 0
This can easily be factored. You need two numbers (one positive, one negative), whose sum is +1, and whose product is -90.
(x + 10)(x - 9) = 0
This gives you two solutions for x:
x + 10 = 0
x = -10
or:
x - 9 = 0
x = 9
Note: it is quite common for a quadratic equation to have two solutions.
Use any letter for the number, for example, x. The equation is:
x + x2 = 90
This should be converted to standard form before proceeding:
x2 + x = 90
x2 + x - 90 = 0
This can easily be factored. You need two numbers (one positive, one negative), whose sum is +1, and whose product is -90.
(x + 10)(x - 9) = 0
This gives you two solutions for x:
x + 10 = 0
x = -10
or:
x - 9 = 0
x = 9
Note: it is quite common for a quadratic equation to have two solutions.
Use any letter for the number, for example, x. The equation is:
x + x2 = 90
This should be converted to standard form before proceeding:
x2 + x = 90
x2 + x - 90 = 0
This can easily be factored. You need two numbers (one positive, one negative), whose sum is +1, and whose product is -90.
(x + 10)(x - 9) = 0
This gives you two solutions for x:
x + 10 = 0
x = -10
or:
x - 9 = 0
x = 9
Note: it is quite common for a quadratic equation to have two solutions.
Use any letter for the number, for example, x. The equation is:
x + x2 = 90
This should be converted to standard form before proceeding:
x2 + x = 90
x2 + x - 90 = 0
This can easily be factored. You need two numbers (one positive, one negative), whose sum is +1, and whose product is -90.
(x + 10)(x - 9) = 0
This gives you two solutions for x:
x + 10 = 0
x = -10
or:
x - 9 = 0
x = 9
Note: it is quite common for a quadratic equation to have two solutions.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoUse any letter for the number, for example, x. The equation is:
x + x2 = 90
This should be converted to standard form before proceeding:
x2 + x = 90
x2 + x - 90 = 0
This can easily be factored. You need two numbers (one positive, one negative), whose sum is +1, and whose product is -90.
(x + 10)(x - 9) = 0
This gives you two solutions for x:
x + 10 = 0
x = -10
or:
x - 9 = 0
x = 9
Note: it is quite common for a quadratic equation to have two solutions.
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What is sum interior of a square?
The sum of the interior angles in a square is 90 degrees per corner times 4 corners. 4x90=360. 360 degrees is the sum of interior angles in a square, or rectangle, for that matter.
If there a formula for finding the measure of an interior angle of a regular polygon?
Yes there is. You find the sum of the interior angles and then divide by the number of angles. Since being regular tells us that every interior angle has the same measurement, this works.Now to find the sum of the interior angles, let n be the number of sides, the the sum is180 degrees (n-2)For example, a triangle has 3 sides so n is 3 and the sum of its interior angles is 180(3-2) or 180 degreesA square has 180(4-2) or 360 degrees as the sum of its interior angles.A regular pentagon has 180(5-2)=180(3) degrees as the sum of the interior angles.Back to the triangle, since the sum is 180 degree and there are 3 angles, each on has measure 60. Similarly for a square, 360 divided by 4 is 90 and each interior angle has measure 90.
What is the sum of all the numbers from 1-90?
91
Degrees in a square?
The interior angles of a square sum to 360 degrees.
Is the square root of 90 a rational number?
No.
What is sum of angle in square?
360 (4*90)
What is the formal to find a angle sum?
the number of angles in a polygon times 90 and then minus 180.
What is a sum of a angle for a square?
each angle in the square is 90 degrees.Since there is 4 angles, therefore the sum of a angle for a square is 360 degrees.
What are means?
a mean is the average of quantity, you find the sum of the quantities then divide that number by the number of quantities. For example to find the sum of 75, 88, 70, 90. Add 75+88+70+90 which equals 323 then divide by 4 and the mean would be 80.75(and possibly round the number)
What are the total angles in a square?
each angle is 90 degrees and because there are 4 the total sum of a squares angles is 360 degrees. You can find the sum of any shapes angles with the formula: S=(n-2)x180 Where S= the Sum of the angles and n= the number of sides the shape has
What two square numbers give a sum of 90?
3³ + 9² = 9 + 81 = 90.
One number is 5 times another and their sum is 90. Find the two numbers?
Numbers are 9 and 2
How do find the sum of complementary angles?
By definition, they must sum to 90 degrees.
What is sum interior of a square?
The sum of the interior angles in a square is 90 degrees per corner times 4 corners. 4x90=360. 360 degrees is the sum of interior angles in a square, or rectangle, for that matter.
What is a number that is multiplied by itself to give you 90?
The number is the square root of 90
What is the sum of the angles of a squere?
Each of the four angles of a square is 90 degrees. 90 x 4 = 360
Is 90 a square number?
No, 90 is not a square number. 81 is 9 squared and 100 is 10 squared.
