alliemaek alliemaek

Today at 4:29 PM
Mathematics

Answered

If 4m-7n=10 and 2m+2n=4, what is the value of 2m-9n?

Answer :

mpanderla95 mpanderla95

Today at 4:34 PM

4m - 7n = 10
2m + 2n = 4 - multiply everything by -1.

4m - 7n = 10
-2m - 2n = -4 Add the 2 equations

(4m - 7n = 10)
+(-2m - 2n = -4)
-------------------------
2m - 9 n = 6.

The value of 2m - 9n would be 6.

Answer Link

Other Questions

In a vertical jumping contest, Katejumped 62 inches, Lily jumped 5feet 6 inches, and Mya jumped 1yard, 2 feet, and 3 inches. Whojumped the highest and what wast

which is the slope intercept form of an equation for the line containing (0,2) with slope -1/2

Shoes are on sale for15% off the regularprice. The discount is$6. What is the regularprice of the shoes?

Complete the table by typing the correct answer in each box. Expression for the area isA = 3x^2 + 17x + 10

which is the slope intercept form of an equation for the line containing (0,2) with slope -1/2

2y^3+5 write coefficient

Please write D roman all questions

(1933^2)^2- (1023^2)^2

Undertake a survey of 20 families in your locality. Find out the educational level, working hours, nature of work of women vis-a-vis men. What conclusions do yo

factorise x^2 - 10x + 9 solve it fast dont give irrelative ans..

I need help with part b and c I know it’s an exothermic reaction

2. Simplify the expression(K-1)(3k-2)

Which relation is not a function?ОА.7O B. {(16,9), (6,8), (3, 1). (22,14),(7,15), (10,6)}O C. {(8,3), (3, 8), (13,7), (18, 21),(4,8), (12, 18))D. X 5 10 20 10 2

Two rays are opposite if and only if they have the same initial point.

a1=-8 an=an-1+4 what is the term in the 7th bounce

What is the value of the algebraic expression if x= 1/2 , y = -1, and z = 2? 6x(y^2z) A. -12 B. -6 C. 1 D. 6

The sizes of two matrices A and B are given. Find the sizes of the product AB and the product BA, whenever these products exist.

You buy $10 raffle ticket for a new car valued at $15,000. 2000 tickets are sold. What is expected value of your gain?

I need help with this problem

how do i determine which of these fit the graph data?d(t)=50t+300d(t)=50td(t)=-50t+300d(t)=-50t