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evablogger [386]
3 years ago
6

Smh I seriously don’t understand how I’m this freaking dumb

Mathematics
2 answers:
Vladimir79 [104]3 years ago
8 0

9. 3x-6=4-2x

First, add 2x to both sides.

5x-6=4

Add 6 to both sides.

5x=10

Divide both sides by 5.

x=2

10. 3x+x=2x+6

Combine like terms.

4x=2x+6

Subtract 2x from both sides.

2x=6

Divide both sides by 2.

x=3

11. 6x=2+x+8

Combine like terms.

6x=10+x

Subtract x from both sides.

5x=10

Divide both sides by 5.

x=2

12. 6x+2-2x=x+8

Combine like terms.

4x+2=x+8

Subtract x from both sides.

3x+2=8

Subtract 2 from both sides.

3x=6

Divide both sides by 3.

x=2

I hope this helps :)

Tema [17]3 years ago
6 0

9) 3x-6 = 4-2x

add 6 to each side:

3x = 10-2x

Add 2x to each side:

5x = 10

Divide both sides by 5:

x = 10/5

x = 2


10) 3x +x = 2x +6

combine like terms on the left side:

4x = 2x +6

subtract 2x from each side:

2x = 6

Divide both sides by 2:

x = 6/2

x =3


11) 6x = 2 + x +8

Combine like terms on the right side:

6x = x +10

Subtract 1x from each side:

5x = 10

Divide both sides by 5:

x = 10/5

x = 2


12) 6x+2-2x = x +8

Combine like terms on the left side:

4x +2 = x +8

Subtract 2 from each side:

4x = x +6

Subtract 1x from each side:

3x = 6

Divide both sides by 3:

x = 6/3

x = 2

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Answer:

Kevin can drive 681 miles.

Step-by-step explanation:

In order to find the amount that he can drive in one day and only pay $250, we have to write an equation for the cost. Using x as the miles he drive, we can express the equation as:

y = .33x + 24.95

Now, we can plug in 250 for y.

250 = .33x + 24.95

225.05 = .33x

681.97 = x

Since we are looking for only whole miles, we have to round down to 681.

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3 years ago
A marketing consultant was in the process of studying the perceptions of married couples concerning their weekly food expenditur
lara31 [8.8K]

Answer:

We have sufficient evidence to conclude at α = .05 that the husband’s perception would be higher than the wife’s.

Step-by-step explanation:

The hypotheses testing procedure in the given scenario is

H0: Husband’s perception would be similar to the wife’s i.e. μh=μw

Ha: Husband’s perception would be higher than the wife’s i.e. μh>μw

Level of significance: α=0.05

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Critical region: t>t(0.05,9)=1.833

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Suppose triangle TIP and triangle TOP are isosceles triangles. Also suppose that TI=5, PI=7, and PO=11. What are all the possibl
taurus [48]
<h3>Two answers: 5, 7</h3>

====================================================

Explanation:

A drawing may be helpful to see what's going on. Check out the diagram below. This is one way of drawing out the two triangles. The locations of the points don't really matter, and neither does the the orientation of how you rotate things. What does matter is we have the right points connected to form the segments mentioned.

----------

For now, focus on triangle TIP only. In order to have this be isosceles, we must make TP = 5 or TP = 7.

If TP = 5, then it's the same length as TI.

If TP = 7, then it's the same length as PI.

In either case, we have exactly two sides the same length (the other side different) which is what it means for a triangle to be isosceles.

----------

Let's consider triangle TOP. For it to be isosceles, we must have two sides the same length. We already locked in TP to be either 5 or 7 in the previous section above. So there's no way that TP could be 11 units long to match up with PO = 11.

If TP = 5, then OT must also be 5 units long so that triangle TOP is isosceles.

If TP = 7, then OT = 7 for similar reasoning.

Either way, TP only has two choices on what it could be.

----------

In short, we basically just write the first two values given to us to get the two triangles to be isosceles. We can't use TP = 11 as it would make triangle TIP to be scalene (all sides are different lengths).

5 0
3 years ago
Write the standard form of the equation of the circle with the given characteristics.
SOVA2 [1]
<h2><u>Circle Equations</u></h2>

<h3>Write the standard form of the equation of the circle with the given characteristics.</h3><h3>Center: (0, 0); Radius: 2</h3>

To determine the equation of a circle, use the standard form of a circle (x - h)² + (y - k)² = r² where,

  • <u>(h, k)</u> is the center; and
  • <u>r</u> is the radius

Substitute the values of the center and radius to the standard form.

<u>Given:</u>

<u>(0, 0)</u> - <u>center</u>

<u>2</u> - <u>radius</u>

  • (x - h)² + (y - k)² = 2²
  • (x - 0)² + (y - 0)² = 4
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<u>Answer:</u>

  • The equation of the circle is <u>x² + y² = 4</u>.

Wxndy~~

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