Mathematics, 21.11.2020 06:40, masie03
Kendra was given this system of equations.
Negative 3 x + 7 y = negative 15. Negative 2 x minus 7 y = 5.
Kendra’s work is shown in the table. Where, if anywhere, did Kendra first make a mistake?
Steps
Kendra’s Work
Step 1
Negative 3 x + 7 y = negative 15. Negative 2 x minus 7 y = 5. Negative 5 x = negative 10.
Step 2
Negative 5 x = negative 10. x = 2.
Step 3
Negative 3 (2) + 7 y = negative 15. Negative 6 + 7 y = negative 15. 7 y = negative 9. y = Negative StartFraction 9 Over 7 EndFraction = negative 1 and StartFraction 2 Over 7 EndFraction
Answers: 2
Mathematics, 21.06.2019 18:30, tyler5016
The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125
Answers: 2
Mathematics, 22.06.2019 03:10, erinleyanne
If f(x) = 5х – 2 and g(x) = 2х + 1, find (f – g)(x).
Answers: 1
Kendra was given this system of equations.
Negative 3 x + 7 y = negative 15. Negative 2 x minus 7 y...
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