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Nata [24]
3 years ago
12

Debbie finished her algebra test early so she decided to check each of her answers. After checking her answer to question #10, s

he realized she made a mistake in her solution. In which step does Debbie make her mistake?
Original Equation: 2 + 3y = 5(y - 2)
Step One: 2 + 3y = 5y - 10
Step Two: 2 = 2y - 10
Step Three: -8 = 2y
Step Four: -4 = y → y = -4
Mathematics
1 answer:
Ber [7]3 years ago
6 0

Answer:

the first mistake was in step 2

Step-by-step explanation: she should not have moved the y to the other side first, she should have moved the other numbers to get one of the y's alone

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Kaylee has a $20 gift card to spend at an online entertainment store. The table shows the categories of items she can buy. Kayle
aalyn [17]

Answer:

  see the attached

Step-by-step explanation:

The total cost of Kaylee's purchases will be the sum of products of the number bought and the cost of the item bought. She wants this total to be at most $20. In math terms, where x and y represent songs and TV episodes, the inequalities describing the scenario are ...

  • 1.29x +2.99y ≤ 20
  • x ≥ 0
  • y ≥ 4

The attached graph shows a plot of this set of inequalities with the feasible region shaded red. The combinations of songs and TV episodes Kaylee can afford are shown by the coordinates of the red dots in the feasible region.

According to the "special," if Kaylee buys 6 songs (and 4 TV episodes), she will get a 7th song free. That is, the "special" means point (6, 4) becomes (7, 4) if there is a 7th song that Kaylee wants.

7 0
3 years ago
Explain how you can use the inscribed angle theorem to justify its second corollary, that an angle inscribed in a semicircle is
Katarina [22]
Prove:

The angle inscribed in a semicircle is a right angle. 

The inscribed angle theorem states that the angle θ, inscribed in a circle is half the measure of the central angle of the circle. So, if the given is a semi-circle, then the inscribed angle is half of 180, therefore, 90 degrees and a right angle.  <span />
6 0
3 years ago
Read 2 more answers
Hi!! Please help me!
castortr0y [4]
Answer is 42.3 because if you multiple
4 0
3 years ago
Read 2 more answers
Is the inequality always, sometimes, or never true?<br> 3x - 14 &lt; 3(x-5)
lys-0071 [83]

Answer:

3x - 14 < 3x - 15

-14 < -15

never true

Step-by-step explanation:

8 0
4 years ago
A recipe calls for 1.5 cups of raisins for 18 cookies how many cups of raisins must be used for making 30 cookies. please break
Zanzabum

Lets list what we know:

1.5 cups = 18 cookies

How many cups in 1 cookie will help us find the answer:

1.5 / 18     (1.5 cups per 18 cookies)

divide both sides by 1.5 (to get how many cookies in 1 cup)

1 / 12        (1 cup = 12 cookies)

Now, how many times does 12 fit in 30?

30/12 = 2.5

This means it takes 2 and a half cups of raisins to get 30 cookies.

If anything is still unclear please comment,

Hope this was helpful

Have a great day!

6 0
4 years ago
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