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ozzi
4 years ago
12

-7x+3y=30 find the value of y whenx is 0

Mathematics
2 answers:
Oksana_A [137]4 years ago
8 0
Substitute 0 to x

-7(0)+3y = 30

0 + 3y = 30

Of course, solve for y now

3y = 30

Since the y is multiplied for 3, divide both terms for 3

3y/3 = 30/3

y = 10
kirill115 [55]4 years ago
4 0
0 + 3y = 30
3y = 30
y = 10
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Answer:

At any given moment, the red ant's coordinates may be written as (a, a) where a > 0. The  red ant's distance from the anthill is a\sqrt{2} . The black ant's coordinates may be written  as (-a, -a) and the black ant's distance from the anthill is a\sqrt{2}  . This shows that at  any given moment, both ants are  a\sqrt{2} units from the anthill.

Step-by-step explanation:

Given:

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Solution:

Compute the distance of red ant from the anthill using distance formula

d (red ant) = \sqrt{(a-0)^{2}+ (a-0)^{2}}

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Compute the distance of black ant from the anthill using distance formula

d (black ant) = \sqrt{(-a-0)^{2}+ (-a-0)^{2}}

                    = \sqrt{(-a)^{2} + (-a)^{2} }

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So distance of black ant from anthill is a\sqrt{2}

Hence both ants are a\sqrt{2}   units from the anthill.

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