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Jet001 [13]
3 years ago
11

Factor the following by grouping. 12r^2+30ry-2xr-5xy

Mathematics
1 answer:
Darya [45]3 years ago
5 0
I'm sorry, I can't show much working for this, I just pictured it. Let me know if you need to see working:
(6r - x)(2r + 5y)
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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
I am a polygon that connects with the bases of a polyhedron
baherus [9]
It is a pyramid. a polygon meets with a polyhedron and make a pyramid
4 0
3 years ago
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If angle 1 is 110°, what would the other angle measures
Iteru [2.4K]

Answer:

If Angle 1 is 110,

then the second angle to complete the straight angle (180 degrees) is...

180 - 110 = 70

Angle 2 = 110 (same as Angle 1, plus it's obtuse)

Angle 3 = 70 (it's acute)

Angle 4 = 70 (same as Angle3, plus it's acute)

3 0
3 years ago
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What is a formula for the nth term of a given sequence
IceJOKER [234]

Answer:

a_n=-12-4(n-1)

Step-by-step explanation:

The given sequence is

-12,-16,-20...

The first term of this sequence is a_1=-12.

The common difference is

d=-16--12

d=-16+12=-4

The nth term of this arithmetic sequence is;

a_n=a_1+d(n-1)

We substitute the values for the first term and the common difference to obtain;

a_n=-12-4(n-1)

5 0
3 years ago
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Use the graph to find the solution to this system of linear equations. y = 58x + 18 and y = -12x – 1
vfiekz [6]

Answer:


Step-by-step explanation: do you have any choices


4 0
3 years ago
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