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3 years ago

9

A rule for creating a pattern is given below. Rule: Multiply X by 3. Then subtract 1 from the result to get y.

1 answer:

Misha Larkins [42]3 years ago

7 0

Answer:

y=3x-1

Step-by-step explanation:

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According to the National Center for Health Statistics, in 1990, 28% of babies in the United States were born to parents who w

svlad2 [7]

Answer:

The year is $b = 1995$

Step-by-step explanation:

From the question we are told that

The percentage of the number of babies born out of wedlock in 1990 is k = 28%

The percentage by which the number increase per year is i = 0.6%

The percentage of of the number of babies born out of wedlock considered is a = 31%

Generally the difference in between the percentage in 1990 and the percentage considered is

$d = a - k$

=> $d = 31 - 28$

=> $d = 3\%$

Generally the number of year require for the percentage to be equal to 31% is mathematically represented as

$n = \frac{3\%}{0.6\%}$

=> $n = 5\ years$

Generally the year which the considered percentage will be attained is

$b = 1990 + n$

=> $b = 1990 + 5$

=> $b = 1995$

6 0

3 years ago

14. The area of a rectangle is 375 square inches and it’s perimeter is 80 inches. Find both the length and width.

Pavel [41]

Answer:

Length $=25$ inches

Width $= 15$ inches

Step-by-step explanation:

Let $l$ = length of rectangle, $w$ = width of rectangle

Given the area and the perimeter of the rectangle, we can write:

$lw = 375$

$2l+2w=80$

So:

$l+w = 80\div2$

$=40$

$l=40-w$

Now, we can use substitution to find the value of $w$ :

$lw = 375$

$(40-w)w = 375$

$40w-w^2 = 375$

$375+w^2-40w = 0$ (Quadratic equation)

$(w-15)(w-25) = 0$

∴ $w = 15, 25$

We can use substitution again to find the value of $l$

$lw = 375$

$l=375\div w$

$=25,15$

∵ Length usually refers to the longer side of a rectangle, ∴ length $=25$ inches and width $=15$ inches.

Hope this helps :)

8 0

3 years ago

1. Nancy is purchasing a $200 coat at 15% off. What is the total amount<br> Nancy must pay?

ozzi

200 * 0.15 = $30 off
200-30 = $170
Nancy must pay $170

3 0

3 years ago

Read 2 more answers

When you have coordinates of two points A(1, 2) and B(2,6) slope is:

bearhunter [10]

Answer: 4

Step-by-step explanation:

4 0

2 years ago

Mark transferred songs from his computer onto his portable music player. He transferred songs in minutes. How many songs did he

stiv31 [10]

Are there no numbers?

7 0

3 years ago