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Nikolay [14]
3 years ago
11

The equation (x2 + 2x2)(3x2 + 2x + 1) = x (3x2 +2x+1)+2x+ (3x2 +2x+1) is an

Mathematics
2 answers:
svetoff [14.1K]3 years ago
6 0

Answer:

Distributive Property of addition

Step-by-step explanation:

is this ok?

Setler [38]3 years ago
3 0
Distributive property of addition because of the plus signs and the parentheses
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Identify a pair of parallel segments.
AURORKA [14]

say ice wallow come out loud its really funny lol

4 0
3 years ago
Suppose that the regression for predicting weight (in pounds) from Height (in Select one answer inches) is given by Weight =-115
Nutka1998 [239]

Answer:

Option D)  I and II only                                    

Step-by-step explanation:

We are given the following in the question:

Regression equation:

w = -115 + 3.6h

where w is the weight in pounds and h is the height in inches.

Since the weight depends on height, height becomes the independent variable and weight becomes the dependent variable.

I. A person who is 61 inches tall will weigh 104.6 pounds

When h = 61,

w = -115 + 3.6(61) = 104.6

Thus, the given statement is true.

II. For every additional inch of height, the predicted weight will increase, on average, by 3.6 pounds.

If the height increases by 1 unit, then,

w(h+1) - w(h) = -115 + 3.6(h+1) - (-115 + 3.6(h))\\w(h+1) - w(h)  = 3.6(h+1-h)\\w(h+1) - w(h)  = 3.6

Thus, the given statement is correct.

III. The correlation between weight and height is negative.

No, the given statement is not correct as with increase in height the weight increases and with decrease in height the weight decreases.

Thus, the correct answer is

Option D)  I and II only

8 0
3 years ago
When are two distinct lines parallel?
sergey [27]

Answer:

if the line keeps going and theynever touch

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Jasmine buys 3 T-Shirts and 3 Hats for $11.25. The next day, he buys 4 T-Shirts and 2 Hats for $10. How much does each T-Shirt a
leonid [27]

Answer: Each shirt costs $1.25, and each hat costs $2.5.

Step-by-step explanation:

Let x= Cost per T-shirt, y = Cost per Hat.

As per given,

3x+3y=11.25        (i)

4x+2y=10             (ii)

Multiply 4 to equation (i)

12x+12y=45          (iii)

12x+6y= 30             (iv)

Eliminate (iv) from (iii), we get

6y= 15

⇒ y = 2.5

Put value of y in (i)

3x+3(2.5)=11.25

⇒3x+7.5=11.25

⇒3x= 3.75

⇒x= 1.25

Hence, each shirt costs $1.25, and each hat costs $2.5.

8 0
3 years ago
Santino bought a book for $23.54. The price of the book was $22. What was the sales-tax rate?
IRINA_888 [86]

The sales tax rate would be 7%

23.54 - 22 = 1.54

1.54 / 22 = .07

.07 = 7%

7 0
3 years ago
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