Margaret and Donovan are twins. They have each kept track of their heights every year since they were 5.

Mathematics

1 answer:

guapka [62]2 years ago

5 0

Answer: Margret grew faster than donovan

Step-by-step explanation:

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Solve the following by elimination method <br> 11x+15y+23=0 and 7x-2y-20=0

mr Goodwill [35]

Let 11x + 15y + 23 = 0 be equation (1)
And 7x - 2y - 20 = 0 be equation (2)

Multiply equation (1) by 2:
22x + 30y + 46 = 0

Multiply equation (2) by 15:
105x - 30y - 300 = 0

Add equations (1) and (2):
22x + 105x + 30y - 30y + 46 - 300 = 0
127x - 254 = 0
127x = 254
x = 254/127
[x = 2]

Substitute x = 2 in equation (1) to find y:
11(2) + 15y + 23 = 0
22 + 15y + 23 = 0
15y + 45 = 0
15y = -45
y = -45/15
y = -3

Therefore, x = 2 and y = -3.

7 0

3 years ago

Help me with this math problem, I need someone to guide me through it I don’t understand what I’m supposed to do first

natita [175]

Answer:

see below

Step-by-step explanation:

The parent function is x^2 which is a parabola at vertex (0,0)

g(x) = ( x+3) ^2

y = f(x + C) C > 0 moves it left

So the parabola is shifted to the left 3 units

h(x) = -( x+3) ^2