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3 years ago

Can someone help me please,I would appreciate it

Mathematics

1 answer:

liubo4ka [24]3 years ago

4 0

The answer is simply 0.

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The length of a rectangle is one more that three times its width. If the perimeter is 42 inches, find the dimensions of the rect

Liono4ka [1.6K]

Let w=width
L= length
3w+1=l
Perimeter -2(l+w)
2(W+3w+1)=42
Divide both sides by 2
W+3w+1=21
Subtract 1
W+3w=20
Add like terms
4w=20
Divide both sides by 4
W=5
The width is 5 inches

3w+1=l
Input the width into the equation
3(5)+1=l
15+1=l
16=l
The length of the rectangle is 16 inches

The rectangle is 5 x 16 inches

6 0

3 years ago

Show me a order line 3/10,0.5 ,1/5 greater to the least

Svetradugi [14.3K]

1/5 , 3/10 , 0.5
This will help

5 0

3 years ago

The weights of newborn baby boys born at a local hospital are believed to have a normal distribution with an average weight of 5

Lisa [10]

Answer: 0.4987

Step-by-step explanation:

Given : The weights of newborn baby boys born at a local hospital are believed to have a normal distribution with

Mean : $\mu=5\text { lbs}$

Standard deviation : $\sigma= 2\text{ lbs}$

Let X be the random variable that represents the weight of randomly selected student .

Z score : $z=\dfrac{x-\mu}{\sigma}$

For x = 5 lbs

$z=\dfrac{5-5}{2}=0$

For x = 11 lbs

$z=\dfrac{11-5}{2}=3$

By using the standard normal distribution table , the probability that the weight of the newborn baby boy will be between 5 lbs and 11 lbs :-

$P(5$

Hence, the probability that the weight of the newborn baby boy will be between 5 lbs and 11 lbs =0.4987

5 0

3 years ago

How do I find the answer for this equation 20x+15y= 330, when x+y =18

Maru [420]

U divide 330 by 15 and get the quotient then do the same thing to 20 and add the quotients together to solve for x and y

6 0

3 years ago

What's the solution of the following linear system?<br><br> y = 4x + 1<br><br> y = 4x

allochka39001 [22]

The solution of a system of equations is the point at which the two lines intersect. Since y is already isolated, we can set the equations equal to each other by doing:
4x=4x+1
Subtract 4x from both sides
0=1
Since 0 cannot equal 1 in any case, the lines never intersect. There is no solution to the problem.

7 0

3 years ago