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BabaBlast [244]
3 years ago
7

What’s x ? And what’s y ?

Mathematics
1 answer:
astraxan [27]3 years ago
6 0

Step-by-step explanation:

Given

x = 2y

And

-4x + 11y = 15

- 4 * 2y + 11y = 15

-8y + 11y = 15

3y = 15

Therefore y = 5

Now putting y = 5

x = 2* 5

= 10

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For the following pair of variables, state the units that might be used to measure each variable. Then state whether you believe
AfilCa [17]

Answer:

The correct answer is:

There is a positive correlation because women's weight tend to increase when height increases (D)

Step-by-step explanation:

The units that might be used to measure each variable are:

Height : meter (m) or foot (plural, feet) (Ft.)

weight : kilograms (kg) or Pounds (lb)

A positive correlation is said to occur between two variables when they both move in the same direction, that is, when they both increase or decrease, while a negative correlation occurs when the movement is not in tandem, i.e, as one increases, the other decreases. The relationship between height and weight is a positive correlation because, an increase in height, which is mainly as a result of elongation of bones, leads to an accumulated increase in total body mass, which in turn increases the body weight.

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4 years ago
Identify the arc length of AD◠ in terms of π.<br><br> HELP PLZZ!! I'M CONFUSED!!
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3 0
3 years ago
Add the digits of the given number <br> 1 + 8 + 4 + 5
vladimir1956 [14]
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A rectangle is three centimeters.longer than it is wide. if its length were to be decreased by two centimeters, its area would d
Scorpion4ik [409]
Given/equations formed from text:
I: l=w+3
II: A=l*w
III: new area B=(l-2)*w
IV: B=A-30

substitute l in II with I to remove l:
II': A=l*w=
(w+3)*w=
w^2+3w

substitute l in III with I to remove l:
III': B=(l-2)*w=
(w+3-2)*w=
(w+1)*w=
w^2+w

substitute A and B from II' and III' into IV:
B=A-30
w^2+w=w^2+3w-30
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insert w=15 into I:
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->
A) dimensions of full size rectangle are width 15 and length 18
dimensions of reduced size rectangle are width 15 and length 16

B) full size: 15*18=10*18+5*18=180+90=270cm^2
reduced size: 15*16=10*16+5*16=160+80=240cm^2


7 0
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