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AleksandrR [38]
3 years ago
5

Write a two column proof

Mathematics
1 answer:
Annette [7]3 years ago
8 0

4y=2x-10 and y=6

use the second expression to calculate the left-hand side of the first equation:

4\cdot 6 = 2x -10\\24 = 2x -10

Add 10 to both sides if this equation to get

34 = 2x

and divide both sides by 2

17 = x

this proves that x = 17, give the two initial equations

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Fill in the blank to make a true equation. (-9)(___) = 36 A. - 4 B. 4 C. 6 D. - 6
Artyom0805 [142]

Answer:

Option A, -4

Step-by-step explanation:

<u>Step 1:  Make an equation to represent the problem</u>

(-9)(x) = 36

<u>Step 2:  Solve for x by dividing both sides by -9</u>

-9x / -9 = 36 / -9

x = -4

Answer:  Option A, -4

3 0
3 years ago
Give the equation of the line with a slope of -7/2<br> and a y-intercept of - 6
antoniya [11.8K]

Answer:

y =  \frac{ - 7}{2}  - 6

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3 years ago
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andreev551 [17]

Answer:

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Step-by-step explanation:

4 0
3 years ago
Cuatro meses después que se detuviera la publicidad, una compañia fabricante notifica que sus ventas han cai­do de 100.000 unida
Volgvan

Answer:

51,200 unidades

Step-by-step explanation:

Paso 1

Calculamos el porcentaje de disminución

= 100000 - 80000/100000 × 100

= 20000/100000 × 100

= 20%

Por lo tanto, el porcentaje de disminución cada mes = 20%

Paso 2

La fórmula de la disminución exponencial

y = a (1 - r) ^ t

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r = 20% = 0,2

t = tiempo en meses = 2

y = 80000 (1 - 0,2) ^ 2

y = 51.200 unidades

7 0
3 years ago
Determine the factors of 5x2 + 29x _ 6
Andre45 [30]
The answer is (x + 6)(5x - 1).

5x² + 29x - 6 = 5x² + 30x - x - 6 =
                      = (5x · x + 5x · 6) - (x + 6) =
                      = 5x(x + 6) - 1(x + 6) =
                      = (x + 6)(5x - 1)
6 0
3 years ago
Read 2 more answers
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