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3 years ago

If anyone can help me I’ll give all my points to u..

Mathematics

2 answers:

V125BC [204]3 years ago

7 0

Answer:

${x}^{2} + 6x - 8 - 3x + 2 - 3 {x}^{2} \\ = (1 - 3) {x}^{2} + (6 - 3)x + 2 - 8 \\ = - 2 {x}^{2} + 3x - 6$

4x+4+2x+2-8x

=(4+2-8)x +4+2

=-2x+6

balu736 [363]3 years ago

5 0

Answer: 12x squared

Step-by-step explanation:

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How to solve -2(x+3)=8

Shtirlitz [24]

-2(x + 3) = 8

Multiply -2 with x and 3

-2x -6 = 8

Now add 6 to both sides

-2x -6 = 8
+6 +8

-2x = 16

Lastly divide -2 from both sides to find x

-2x = 16
—— —-
-2x -2x

X = -8

5 0

3 years ago

Read 2 more answers

A 90 percent confidence interval for the slope of a regression line is determined to be (-0.181, 1.529). Which of the following

GenaCL600 [577]

Answer: a. The correlation coefficient of the data is positive.

Step-by-step explanation:

Estimated slope of sample regression line = $\dfrac{Upper \ limit + lower\ limit}{2}$

Here , confidence interval : (-0.181, 1.529)

Estimated slope of sample regression line = $\dfrac{-0.181+1.529}{2}$

$=\dfrac{1.348}{2}\\\\=0.674\ \ \ \ [\text{ positive}]$

⇒Correlation coefficient(r) must be positive, So a. is true.

But, d. and e. are wrong(0.674 ≠ 0 or 1.348).

We cannot check residuals or its sum from confidence interval of slope of a regression line, so b is wrong.

We cannot say that scatterplot is linear as we cannot determine it from interval, so c. is wrong

So, the correct option : a. The correlation coefficient of the data is positive.

7 0

3 years ago

If you roll a six-sided die 6 times what is the best prediction possible for the number okay you were Roll a 2

stepladder [879]

6 i think im not sure

3 0

3 years ago

Read 2 more answers

If pqrs is a square solve for x what do I do?

ICE Princess25 [194]

Answer:

x = 11

Step-by-step explanation:

Properties of a square,

1). Diagonal of a square bisect the opposite angles.

2). All interior angles of a square measure 90°.

From these properties,

m∠PQR = 90°

Since, diagonal QS bisects angle PQR,

m∠PQS = m∠RQS = 45°

(6x - 21)° = 45°

6x = 45 + 21

6x = 66

x = 11

3 0

3 years ago

Please help asap thanks so much

zvonat [6]

Complementary and adjacent.

The two angles are complementary because they add up to 90°. It's given that line JL is perpendicular to line MN, and perpendicular means they form a 90° angle where they intersect.

The two angles are adjacent because they are next to each other.

8 0

3 years ago