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
Fynjy0 [20]
3 years ago
14

I need help quickly please have clear explanation and answer written in brainly

Mathematics
2 answers:
gregori [183]3 years ago
8 0
2 = 3

2 x 11 = 22
22 - 19 = 3

3 = 14

3 x 11 = 33
33 - 19 = 14

6 = 47

6 x 11 = 66
66 - 19 = 47

10 = 91

10 x 11 = 110
110 - 19 = 91
Andrei [34K]3 years ago
4 0

Answer:

ii

Step-by-step explanation:

i

You might be interested in
PLEASE HELP ASAP
Aneli [31]

Answer:

its is 192 I just took this assignment

3 0
3 years ago
Solve the following system of equations by Graphing. Label the solution and all intercepts. 4x-2y=8 y=1/2x+2
vovangra [49]

Answer:

The points that intercepts are (4,4) that's what I got. I hope that helps you.

7 0
3 years ago
A survey of 865 voters in one state reveals that 408 favor approval of an issue before the legislature. Construct the 95% confid
katrin [286]

Answer:

The 95% confidence interval for the true proportion of all voters in the state who favor approval is (0.4384, 0.5050).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 865, \pi = \frac{408}{865} = 0.4717

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.4717 - 1.96\sqrt{\frac{0.4717*0.5283}{865}} = 0.4384

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.4717 + 1.96\sqrt{\frac{0.4717*0.5283}{865}} = 0.5050

The 95% confidence interval for the true proportion of all voters in the state who favor approval is (0.4384, 0.5050).

6 0
3 years ago
Write an equation of a parabola that passes through (3,-30) and has x-intercepts of -2 and 18. Then find the average rate of cha
Nookie1986 [14]

Answer:

The equation of the parabola is y = \frac{2}{5}\cdot x^{2}-\frac{32}{5}\cdot x -\frac{72}{5}.  The average rate of change of the parabola is -4.

Step-by-step explanation:

We must remember that a parabola is represented by a quadratic function, which can be formed by knowing three different points. A quadratic function is standard form is represented by:

y = a\cdot x^{2}+b\cdot x + c

Where:

x - Independent variable, dimensionless.

y - Dependent variable, dimensionless.

a, b, c - Coefficients, dimensionless.

If we know that (3, -30), (-2, 0) and (18, 0) are part of the parabola, the following linear system of equations is formed:

9\cdot a +3\cdot b + c = -30

4\cdot a -2\cdot b +c = 0

324\cdot a +18\cdot b + c = 0

This system can be solved both by algebraic means (substitution, elimination, equalization, determinant) and by numerical methods. The solution of the linear system is:

a = \frac{2}{5}, b = -\frac{32}{5}, c = -\frac{72}{5}.

The equation of the parabola is y = \frac{2}{5}\cdot x^{2}-\frac{32}{5}\cdot x -\frac{72}{5}.

Now, we calculate the average rate of change (r), dimensionless, between x = -2 and x = 8 by using the formula of secant line slope:

r = \frac{y(8)-y(-2)}{8-(-2)}

r = \frac{y(8)-y(-2)}{10}

x = -2

y = \frac{2}{5}\cdot (-2)^{2}-\frac{32}{5}\cdot (-2)-\frac{72}{5}

y(-2) = 0

x = 8

y = \frac{2}{5}\cdot (8)^{2}-\frac{32}{5}\cdot (8)-\frac{72}{5}

y(8) = -40

r = \frac{-40-0}{10}

r = -4

The average rate of change of the parabola is -4.

3 0
3 years ago
Please help on a maths question, Brainiest for the best answer!!!
ankoles [38]

Answer:

36.6 cm

Step-by-step explanation:

Each side, starting with the one all the way to the left and going anticlockwise.

7 + 4.3 + 7 + 4.3 + 7 + (7 - 4.3 = 2.7) + 4.3 = 36.6

4 0
3 years ago
Read 2 more answers
Other questions:
  • You estimate that your friend is 50 inches tall. That actual height of your friend is 54 inches. Find the percent error.
    10·1 answer
  • P. The inventory of a store 2 years ago was worth $45,000. This year it is
    10·2 answers
  • 4 times as much as 20.075
    15·2 answers
  • Suppose you need to know an equation of the tangent plane to a surface S at the point P(4, 1, 4). You don't have an equation for
    5·1 answer
  • Which fractions are equivalent? Explain how you know.
    8·1 answer
  • Can someone PLEASE explain how to do this problem for me: Write 54c^2/3 in radical form.
    10·1 answer
  • GIVING OUT BRAINLIST QUICK! NUMBER 6
    13·1 answer
  • Find the value of x and y​
    11·1 answer
  • What is 8 1/5 - 2?<br> Please show all work.
    8·1 answer
  • Section 1 - Question 9
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!