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3 years ago

Is due today Help!!! Algebra ll

Mathematics

1 answer:

guapka [62]3 years ago

7 0

$-7x-9y=-8$

$5x+6y=4$

$-35x-45y=-40$

$35x+42y=28$

$-3y=-12$

$y=4$

$5x+6(4)=4$

$5x+24=4$

$5x=-20$

$x=-4$

$(-4,4)$

Hope this helps.

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Answer:

Option D, Yes, Devon should have evaluated f(3)

Step-by-step explanation:

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Step 1: Evaluate using F(3) NOT f(-3)

f(3) = 3^3 + 3^2 - 10(3) + 8

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3 years ago

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USPshnik [31]

Answer:

Julio travel 3 hours by biking and 4 hours by walking.

Step-by-step explanation:

Given:

Julio started biking to the park traveling 8 mph, after some time the bike got a flat so Julio walked the rest of the way, traveling 7 mph.

If the total trip to the park took 7 hours and it was 52 miles away.

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The speed travelled by the walking = 7 mph.

Let the time Julio travel with bike be $x.$

And the time Julio travel by walking be $y.$

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And, the distance travelled by walking:

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Subtracting both sides by 49 we get:

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$y=7-x\\\\y=7-3\\\\y=4\ hours.$

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Answer:

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