Answer: 41.86 miles/hour
Step-by-step explanation:
Use Distance = Speed*Time to find the two missing values with the data that is provided for those two cases [<em>in brackets</em>].
MPH MILES HOURS
50 20 [<em>0.4]</em>
[<em>40</em>] <u>70</u> <u>1.75</u>
Totals 90 miles 2.15 hours
Average = 90 miles/2.15 hours
41.86 mph
Answer:
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$268.00 base price
8% is $21.44
Total with tax $289.44
<h2>
Answers:</h2>
- Solving for x on the question - <em>2x + 3y = 32</em> |
- Answer : x = ⁻y + 16
- Solving for y on the question - <em>2x + 3y = 32</em> |
- Answer : y = x +
<h3>
</h3>
- Solving for x on question - 5x - 4y = -81 |
- Answer : x = y +
- Solving for y on question - 5x - 4y = -81 |
- Answer : y = x +
<h2>
Step-by-step explanation:</h2>
<em>(Solving for x on question - 2x + 3y = 32)</em>
2x + 3y = 32
Step 1: Add -3y to both sides.
2x + 3y + −3y = 32 + −3y
2x = −3y + 32
Step 2: Divide both sides by 2.
=
<u>x = </u><u>⁻y + 16</u><u> </u>
<em>(Solving for y on question - 2x + 3y = 32)</em>
2x + 3y = 32
Step 1: Add -2x to both sides.
2x + 3y + −2x = 32+ −2x
3y = −2x + 32
Step 2: Divide both sides by 3.
=
<u>y = </u><u>x + </u><u> </u>
<em>(Solving for x on question - 5x - 4y = -81)</em>
5x − 4y = −81
Step 1: Add 4y to both sides.
5x − 4y + 4y = −81 + 4y
5x = 4y − 81
Step 2: Divide both sides by 5.
=
<u>x = </u><u>y + </u><u> </u>
<em>(Solving for y on question - 5x - 4y = -81 )</em>
5x − 4y = −81
Step 1: Add -5x to both sides.
5x − 4y + −5x = −81 + −5x
−4y = −5x − 81
Step 2: Divide both sides by -4.
=
y = x +
ANSWER TO QUESTION 1
We rewrite to obtain;
Recall this product law of indices
we apply this law to obtain,
This simplifies to
We need to rewrite this in standard form;
We apply the product law again to get
This simplifies to
ANSWER TO QUESTION 2
We rewrite to obtain;
Recall this product law of indices
we apply this law to obtain,
This simplifies to
This is already in standard form.