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
Stella [2.4K]
3 years ago
6

Hey can you please help me posted picture of question

Mathematics
1 answer:
zimovet [89]3 years ago
5 0
The parabola opens towards left, this means the squared term is y with negative coefficient.

The vertex is given to be the point (-1,-3). So, the general equation of the parabola will be like:

x=-a(y+1)^{2}-3

where a is any constant.

In the given options, only 1 such equation is available and that is option C.

So the answer to this question is option C
You might be interested in
The number of trees in a rainforest decreases each month by 0.5%. The forest currently has 2.5 billion trees. Which expression r
Blababa [14]

Answer:

y=2.5*10^9(0.005^{12 0}) \\\\

Step-by-step explanation:

The above question is in the form of an exponential decay. The equation for an exponential decay is given by:

y=ab^x

where y and x are variables, b < 1, a is the initial value of y (that is the value of y when x = 0).

Let y represent the number of trees left and x represent the number of months. Given that there is currently 2.5 billion trees, therefore a = 2.5 * 10⁹, b = 0.5% = 0.005. The equations becomes:

y=2.5*10^9(0.005^x)\\\\After\ ten\ years(x=10*12\ months=120\ months):\\\\y=2.5*10^9(0.005^{12 0}) \\\\

8 0
3 years ago
In a simple regression analysis (where y is a dependent and x an independent variable), if the slope is positive, then it must b
Scorpion4ik [409]

Answer:

c. there is a positive correlation in-between x and y

Step-by-step explanation:

A regression line is a line that suggests that all the points in a scatter diagram lie on or near one particular line. In a simple regression analysis in which y is the dependent variable and x is the independent variable. If the slope is positive, the bivariate data is also said to have a positive correlation. The positive correlation in-between two variables x and y implies that in general, an increase in x goes hand in hand with an increase in y.

3 0
2 years ago
I need help ASAP. I'm not good with math.
bonufazy [111]

Given:

The increase in pressure P is the linear function of the depth d.

P(d)=0.445d+14.7

The cost of dinner is $300 and $10 per students.

To find:

The initial value and rate of change and their interpretation.

Find the cost function C where n is the number of students.

Solution:

The slope intercept form of a linear function is

f(x)=mx+b          ...(i)

where, m is rate of change and b is y-intercept or initial value.

We have,

P(d)=0.445d+14.7        ...(ii)

From (i) and (ii), we get

m=0.445,b=14.7

The initial value is 14.7. It means, the pressure at sea level is 14.7 pounds psi.

Rate of change is 0.445. It means, the pressure is increasing by 0.445 pounds psi for every feet.

The cost of dinner is $300 and $10 per students.

Let C(n) be the total cost for dinner and n be the number of students.

Fixed cost = $300

Additional cost for 1 student = $10

Additional cost for n student = $10n

Now,

Total cost = Fixed cost + Additional cost

C(n)=300+10n

Therefore, the required cost function is C(n)=300+10n.

8 0
2 years ago
Find the value of each of the following: exponents
Nataly [62]

Answer:

7) is 625

8) 169

9) 1.44

10) 180??

11) 1000000

12) 3430

hopefully these are right

Step-by-step explanation:

7 0
2 years ago
57%:43% of 3.09 million
andrew-mc [135]

Answer:

Step-by-step explanation:

Percentage Calculator: What is 57 percent of 3.09? = 1.7613.

3 0
2 years ago
Other questions:
  • Find the area of this irregular polygon.
    15·1 answer
  • How do I solve the inequality 6|p|+8&gt;-22? It's a multiple choice question on my homework and the answers available are either
    15·2 answers
  • Find the balance in the account to the nearest whole dollar:
    9·1 answer
  • One batch of cookies takes two and two-fifths cups of milk. How many cups of milk will 25 batches of cookies require?
    14·1 answer
  • <img src="https://tex.z-dn.net/?f=9%20%5Ctimes%20%20%7B10%7D%5E%7B8%7D%20" id="TexFormula1" title="9 \times {10}^{8} " alt="9 \
    15·1 answer
  • PLEASE HELPPP
    10·2 answers
  • -20 2 -6 -18 4 -4 put them from least to greatest
    13·2 answers
  • By paying $50 cash up front and the balance at $35 a
    14·1 answer
  • Who’s smart ,but it’s math
    13·1 answer
  • A tree 40 feet high casts a shadow 58 feet long. Find the measure of the angle, to the nearest degree, of
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!