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4 years ago

2 is subtracted from a number,and rhen the difference is multiplying by 5. the result is 30.find the number

Mathematics

1 answer:

UkoKoshka [18]4 years ago

5 0

Answer:

Step-by-step explanation:

x-2= x x×5=30 (make x the subject).So x=30÷5=6
x-2=6
x=6+2
x=8

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Marianna [84]

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4 years ago

PLZ HURRY IT'S URGENT!!

Y_Kistochka [10]

Answer:

n + 6 = 7n

Step-by-step explanation:

"The sum of a number and six" would mean the number plus 6: n+6 and "is seven times the number" indicates that it would be equal to the product of 7 for n: 7n. According to this, the answer is that the translation of the sentence into an equation is: n+6=7n.

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4 years ago

Show that the transformation T defined by T(x1, x2) = (2x1 - 3x2, X1+4, 5x2) is not linear.

erastovalidia [21]

Let u = (1, 0) and v = (0, 1). Then

T (u) = (2*1 - 3*0, 1 + 4, 5*0) = (2, 5, 0)

T (v) = (2*0 - 3*1, 0 + 4, 5*1) = (-3, 4, 5)

=> T (u) + T (v) = (-1, 9, 5)

but

T (u + v) = T (1, 1) = (2*1 - 3*1, 1 + 4, 5*1) = (-1, 5, 5)

=> T (u + v) ≠ T (u) + T (v)

which means T does not preserve addition, so it is not linear.

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3 years ago

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3 years ago

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frosja888 [35]

The right answer is 10 units.

please see the attached picture for full solution

Hope it helps

Good luck on your assignment

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3 years ago