1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
V125BC [204]
3 years ago
7

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

ere not married. Throughout the​ 1990s, this increased by approximately 0.6% per year. If this trend​ continues, in which year will 49% of babies be born out of​ wedlock
Mathematics
1 answer:
Triss [41]3 years ago
4 0

Answer:

2029

Step-by-step explanation:

We can write an equation:

0.28+0.006x=0.51

A few things explained:

The constant 0.28 comes from the fact in 1990, 28% of babies were born to parents who were not married. 28%=0.28

0.006 represents 0.6% and x represents the number of years will pass until 49% of babies will be born out of wedlock

0.51 represents 51%. 51% represents the percentage of babies who will be born to parents not married (100% - 49%=51%). You want to use 51% instead of 49% because the right side represents the babies born to parents not married.

We can solve the equation:

0.28+0.006x=0.51

0.006x=0.23

x=38.33

Since you can't have 38.3333 years, we'll say that 39 will pass until 49% of babies are born out of wedlock.

So, we add 39 years to 1990.

1990+39=2029

Hope this helps!

You might be interested in
What is the smallest integer greater than -1/2 .
fgiga [73]
0 is greater than - 1/2 and zero is an integer.

8 0
4 years ago
Read 2 more answers
How to write 14.578 in expanded form
34kurt
14.578 = 1 x 10 + 4 x 1 + 5/10 + 7/100 + 8/1000 = 10 + 4 + 0.5 + 0.07 + 0.008
4 0
3 years ago
A road has a 10% grade, meaning increasing 1 unit of rise to every 10 units of run.
fenix001 [56]

The grade is the ratio of rise to run, i.e. the slope aka the tangent.

\tan \theta = \dfrac{1}{10}

\theta = \arctan 0.1 \approx 5.711^\circ

Answer: (a) 6 degrees

For part b, the road is the hypotenuse c of a right triangle whose tangent of the small angle is 1/10.    The height h or rise is the side opposite the small angle.

\sin\theta = \dfrac h c

h = c \sin \theta

We could just take the sine of the angle we got but let's get it from the tangent exactly.

\cos^2 \theta + \sin ^2 \theta = 1

Dividing by squared cosine

1 + \tan ^2 \theta = 1/\cos^2 \theta = 1/(1- \sin^2 \theta)

(1- \sin^2 \theta) = 1/(1 + \tan^2 \theta)

\sin^2 \theta = 1 - 1/(1 + \tan^2 \theta)

\sin^2 \theta = 1 - 1/(1 + (1/10)^2) = 1-1/(101/100) = 1/101

h = c \sin \theta = 2 \sqrt{1/101} \approx 0.199

Answer: (b) Rise of 0.199 km

6 0
4 years ago
(8v)^-1 writer with positive exponent and then simplify.
IgorLugansk [536]
(8v)^{-1}= \cfrac{1}{8v^1} = \cfrac{1}{8v}
6 0
3 years ago
What is 10/10*10*10*10^2
Whitepunk [10]

Answer:

I'm guessing 1000000 but I might be wrong

3 0
3 years ago
Read 2 more answers
Other questions:
  • If addenda are 170 and 130 what is the sum
    11·1 answer
  • If f(x) = 5x, what is f–1(x)?
    5·2 answers
  • https://lh5.googleusercontent.com/BTB8IVPp1M9ftWYrmUv4V29JTOIu-fUaQRDbERGKuRvHwen-iiK29m3v1rhGvp6kX40Rv0TBORmiPdtdKLoAv9vuG5Hp5Z
    13·2 answers
  • *EXTRA PTS PLS ANSWER* Find the equation of a line that has a slope of 1/2 and a y-intercept = 1. (Don't leave any spaces in bet
    8·1 answer
  • A car rental company offers the following two plans for renting a car:
    7·1 answer
  • Help me plssssssssssssssssssssssss
    7·1 answer
  • A. What are the coordinates of the vertices of the triangle below?
    8·1 answer
  • HELP PLEASE !!!! SHOW WORK TO ANSWER PLEASE
    10·1 answer
  • i need help with the last two. I forgot the formula and wondering if you will help me find which one is and isnt a triangle
    11·1 answer
  • Two consecutive whole numbers is 57. What are the two numbers?(hint: Let n represent the first number. Then n + 1 is the next co
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!