Help please if you don’t know don’t answer thank you so much

Mathematics

1 answer:

timurjin [86]3 years ago

4 0

Answer:

Step-by-step explanation:

1). Replace one equation with a multiple of itself.

2x + 7y = 3 ⇔ 4(2x) + 4(7y) = 4(3)

2). Yes, systems are equivalent.

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IceJOKER [234]

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4 years ago

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Elenna [48]

Answer:

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3 years ago

The equation x + y = z relates the whole numbers x, y, and z. How does z compare to x? Y is z less than x. Y is z more than x. X

rewona [7]

Answer:

x is y less than z

Step-by-step explanation:

The given equation is x + y = z

This equation relates the whole numbers x, y, and z.

This equation can be rearranged to make x the subject of the formula or to make y the subject of the formula. When this is done, the relationship between the terms or numbers would be clearly expressed.

Making y the subject of the formula, it becomes

y = z-x (this shows that z is greater than y by x)

Making x the subject of the formula, it becomes

x = z-y (this shows that z is greater than x by y)

Looking at the options given, the correct comparisons between z and x is

x is y less than z

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3 years ago

Given the function fx)=-5x2-x+20 find f(3)

strojnjashka [21]

For this problem, you must plug 3 into x...
f(x)= -5(3) - 3 + 20=
f(x)= -15 - 3 + 20=
f(x)= 2

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