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
aivan3 [116]
3 years ago
15

Find the value of x. 48° (7x + 13) A. 7 B. 3 C. 11 о D. 5

Mathematics
1 answer:
Agata [3.3K]3 years ago
7 0

Answer:

D

Step-by-step explanation:

The given angles are vertically opposite and congruent , then

7x + 13 = 48 ( subtract 13 from both sides )

7x = 35 ( divide both sides by 7 )

x = 5 → D

You might be interested in
The federal government would like to estimate the proportion of households in the U.S. population that own their own homes. A pi
netineya [11]

Answer:

1770

Step-by-step explanation:

We need to estimate number of households to be sampled to construct a 99% confidence interval.

Number of households to be sampled=n=?

n=\frac{(z_{\frac{\alpha}{2} })^2 pq }{E^{2} }

z_{\frac{\alpha}{2} } =z_{\frac{\0.01}{2} }=z_{0.005 }=2.576

The proportion can be estimated as

p=x/n.

We know that 24 out of 40 households owns their home.

so, x=24 and n=40.

p=24/40

p=0.6

q=1-p=1-0.6=0.4

pq=0.6*0.4=0.24

E=0.03

n=\frac{(z_{\frac{\alpha}{2} })^2 pq }{E^{2} }

n=\frac{2.576^2(0.24)}{0.03^2}

n=\frac{1.5926}{0.0009}

n=1769.56.

n=1770.

Thus, the number of households that need to be sampled are 1770.

3 0
3 years ago
The amount of medicine in a patient's bloodstream is shown by the function A(h)=600(0.75)^h, where h is the number of hours that
scoundrel [369]

The amount of medicine in the bloodstream decreases by 25% each hour.

<h3>Exponential equation</h3>

The standard exponential equation is expressed as:

y = ab^x

a is the initial amount

b is the rate

If b < 1, hence there is a declince

Given the expoenentia equation A(h)=600(0.75)^h,

b = 1 - r = 0.75

r = 1 - 0.75

r = 0.25

This shows that the amount of medicine in the bloodstream decreases by 25% each hour.

Learn more on exponential equation here: brainly.com/question/12940982

5 0
2 years ago
Stan wants to start an IRA that will have $250,000 in it when he retires in 25 years. How much should he invest semiannually in
beks73 [17]
$1,041,666.70 I'm not sure but that what I think the answer is

8 0
4 years ago
Please divide 49 by 1000​
Tanzania [10]

Answer:

49 divide by 1000 is 0.049.

hope it helps :) :) :)

7 0
3 years ago
Read 2 more answers
WILL GET MARKED BRAINLIEST IF RIGHT! ( please look at picture )
artcher [175]

Answer:

14

Step-by-step explanation:

It's a probability, divide favorable outcomes to total outcomes

7 0
2 years ago
Read 2 more answers
Other questions:
  • Which graph represents an exponential function? On a coordinate plane, a line curves upwards gradually. On a coordinate plane, a
    7·2 answers
  • solve "in muddy lake, 600 fish were tagged. later, 12 out 480 fish were found tagged. about how many fish are in the lake?"
    7·1 answer
  • Stuck on this question​
    10·1 answer
  • Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
    11·1 answer
  • David reads this advert on his county council website.
    8·2 answers
  • Help me plz State the x- and y-intercepts.
    14·1 answer
  • PLEASE HELP!!! GIVING BRAINLIEST!!! PLEASE AND THANK YOU! :D<br><br> The questions are in the pic.
    11·1 answer
  • PLS ANSWER IM MARKING BRAINLEST IF YOU CORRECT
    10·2 answers
  • -3/5 is greater than or less than -4/5
    11·1 answer
  • Reduce each to lowest terms
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!