2 years ago

A 9 Kylie drives 291 miles in 6 hours. (a) What is her average speed?

Mathematics

1 answer:

ivolga24 [154]2 years ago

5 0

Answer:

48.5 m/s

Step-by-step explanation:

291/6 = 48.5

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Help help help please !!!!

docker41 [41]

Answer:

D. 17

Step-by-step explanation:

If PR equals 34, to get PT divide 34 by 2 since it's half of PR.

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2 years ago

A multivitamin tablet contains

dezoksy [38]

For every multivitamin tablet you take, you get 0.14 grams of vitamin C.

0.14 * 30 = 4.2

The question wants the answer in milligrams.

One milligram = 0.001 gram

4.2 / 0.001 = 42000
<span>
So, 42000 is the answer.</span>

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3 years ago

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For the following system, if you isolated x in the first equation to use the substitution method, what expression would you subs

alekssr [168]

Answer:

$x=2y+6$

Step-by-step explanation:

So we have the system:

$-x+2y=-6\\3x+y=8$

If we isolate the x-variable in the first equation:

$-x+2y=-6$

Subtract 2y from both sides:

$-x=-6-2y$

Divide both sides by -1:

$x=2y+6$

Therefore, we would substitute the above into the second equation:

$3x+y=8\\3(2y+6)+y=8$

The answer is 2y+6

Further notes:

To solve for the system, distribute:

$6y+18+y=8$

Simplify:

$7y+18=8$

Subtract:

$7y=-10$

Divide:

$y=-10/7\approx-1.4286$

Now, substitute this value back into the isolated equation:

$x=2(-10/7)+6\\x=-20/7+42/7\\x=22/7\approx3.1429$

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2 years ago

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Which of the following equations is quadratic?

sergiy2304 [10]

The third option is quadratic

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2 years ago

Roast beef is on sale at the deli for $6.78 per pound. How much will it cost to buy 1.5 pounds of roast beef ? Please show your

ivanzaharov [21]

So what you want to do is divide 6.78 by 2 to find one half of a pound. Then once you do that add your answer to 6.78 to equal one pound and a half. Hope this helps!

$6.78 divided by 2 = $3.39

$6.78 + $3.39 = $10.17

4 0

3 years ago