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UNO [17]
3 years ago
9

When solving an equation, Drew's first step is shown below. Which property justifies

Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
3 0

Answer:

good luck...

Step-by-step explanation:

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Which of the following is the expanded form of a number? Select all correct answers.
velikii [3]

Answer:

잘 봐 넌 그 꼴 나지

우린 탁 쏴 마치 콜라지

너의 각막 깜짝 놀라지

꽤 꽤 폼나지 포 포 폼나지

3 0
3 years ago
If 9x+2y^2−3z^2=132 and 9y−2y^2+3z^2=867, then x+y =
8_murik_8 [283]

Answer:

x + y = \frac{1000}{9}

Step-by-step explanation:

<em>Step 1: Identify the approach:</em>

With this problem, the general solution is to try manipulate given data and transform data into a new form, in which, the desired value (x + y) is on the left side and all of other components which do not contain x or y are on the right side.

<em>Step 2: Analyze:</em>

9x + 2y^{2} - 3z^{2} = 132\\9y - 2y^{2} + 3z^{2} = 867

Realize that in both equations, the 2y^{2} and 3z^{2} are in form of different signs. Then adding up corresponding sides of both equation can help eliminate these undesired components.

<em>Step 3: Perform manipulation:</em>

9x + 2y^{2} - 3z^{2} + 9y - 2y^{2} - 3z^{2} = 132 + 867

Rearrange:

(9x + 9y) + (2y^{2} - 2y^{2}) +(3z^{2} - 3z^{2}) = 132 + 867

Simplify:

9(x + y) + 0 + 0 = 1000

Simplify:

x + y = \frac{1000}{9}

Hope this helps!

:)

4 0
3 years ago
The study report gives a scatterplot for a random sample of penguins. The dive duration is measured in minutes and depth (x valu
erastova [34]

Answer:

a) y-intercept = 2.59

b) Therefore, we can say that when the penguin is not diving, the mean dive duration is 2.59 minutes.

Step-by-step explanation:

(a) What is the y-intercept of the regression line? (Use 2 decimal places)

The given regression equation is

y = 2.59 + 0.0126x

The standard form of the regression equation is given by

y = a + bx

Where a is the y-intercept of the regression line and b is the slope of the regression line.

Comparing the given equation with the standard form,

y-intercept = 2.59

(b) What is the correct interpretation of the y-intercept?

The y-intercept is the value we get when x = 0

y = 2.59 + 0.0126(0)

y = 2.59 + 0

y = 2.59 minutes

Therefore, we can say that when the penguin is not diving, the mean dive duration is 2.59 minutes.

7 0
3 years ago
What is the value of n in the equation 1/2(n-4)-3=3-(2n+3) ?
bulgar [2K]

Answer:

2

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
What is the y-intercept? (picture attached)
Feliz [49]

Answer:

The y intercept is -7. Hope this helps.

5 0
3 years ago
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