Mathematics

Mathematics, 10.07.2019 22:30, Carrchris021

Two real numbers x and y have the property that their difference is 6 and the difference of their square roots is 1. find the sum of x and y

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Mathematics, 11.07.2019 14:00, serenityarts123

Which property of real numbers is shown below? -6(4x + 5) = -24x - 30 associative property of addition commutative property of multiplication distributive property inverse property of additionm of six times a number and three, multiplied by the difference of nine times the number and seven the sum of six times a number and three, divided by the difference of nine times the number and seven the sum of three times a number and six, multiplied by the difference of seven times the number and nine the sum of three times a number and six, divided by the difference of seven times the number and nine

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Mathematics, 11.07.2019 14:00, quantaviousw49

1.) use the distributive property to simplify the expression . (-1)(4 - c) a. 4 - c b. -4 + c c. 4 + c d.-4 - c 2.)use the distributive property to simplify the expression 4(2x - 4) a.8x + 4 b.8x - 4 c.8x - 16 d.4x - 16 3.) use the distributive property to simplify the expression (10 + 4y) 1/2 a. 5 + 2y b. 20 + 8y c. 5 + 4y d. 10 +2y 4.) to which subsets of real numbers does the number - 22 belong ? choose all that apply (2 points) a.whole numbers b.rational numbers c. integers d. irrational numbers e. natural numbers 5.)what is an algebraic expression for the following word phrase: "6 times the difference of b and p" ? a. 6b - p b. 6(b - p) c. 6 - bp d. 6bp 6.)what is the simplified form of the expression ? 5(14 - 2)^2 2 a. 60 b. 30 c. 72 d. 360 7.) evaluate u + xy, if u = 18, x = 10, and y = 8 a.188 b.36 c.98 d.224 8. a square field has an area of 479 ft^2 . what is the approximate length of a side of the field ? give your answer to the nearest foot . explain your response . 9. simplify the expression (7 + 5) + 4 x 13 - 2 show work .

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Mathematics, 14.09.2019 08:10, ed100

Complex numbers and arithmetic. recall that the imaginary number i is defined to be v-1 and a complex number is any quantity of the form a + bi where a, b are real numbers. we often use symbols c- a + bi, z-x + iy, and w -u + iv for complex numbers. arithmetic with complex numbers follows the same rules as real arithmetic - just remember that any time you have i times you replace it with-1. (a) for specific illustration, let c 1+2i and w 3- 4i and calculate cw. the compler conjugate of a complex number c- a is always real and nonnegative for any complex number c; in fact we define the magnitude of c to be cvc*c-va2 +b2 (the nonnegative square root) (b) calculate lcl, i 삐, ic삐 and check that ic삐 = elle). - 41 and calculate cw. 叶bi i̇s c* a bi. note that c*c = cc* a2 + b2 calculate c, w, cw and check that cw (c) using conjugates we can define complex division: w/c check that lav/d- /le- (we*)/(cc ). calculate w/c, w/d and (d) find the two complex roots r+-r-of the quadratic function q(z)一~2 +4: + 13. observe that these roots are complex conjugates of each other. check that the sum of the roots equals the coefficient of the linear term, and the product of the roots equals the constant term, just as when roots are real. these facts are true of all quadratic functions with real coefficients (and leading coefficient - 1

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Mathematics, 26.09.2019 13:30, princesskhj6932

1) name the property of real numbers illustrated by the equation. -4(x+4)=-4x-16 a.associative property of addition b.commutative property of addition c.associative property of multiplication d.distributive property 2) given no other restrictions what are the domain and range of the following function? f(x)=x^2-2x+1 a. d=all real numbers r=all real numbers b. d=all real numbers r={yi> _ -1 c. d=all real numbers r={yiy> _0} d. d{xix> _0} r={yiy< _1}

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