Which are solution for the inequality y> -1

Answer:

C the one with the 12

so the 3 turn into 1/3 now 1/3 times 1/4 = 1/12

now turn the 1/12 into the outside of the sign

Step-by-step explanation:

When using GeoGebra, I'm getting the regression curve to be roughly

h(t) = 1.67*(1.4)^t

I'm not sure how your teacher got 1.64 instead of the 1.67, but it's fairly close. So it seems like choice B is the best answer for the first part.

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Once we know the regression equation, we plug in t = 14 to find that,

h(t) = 1.64*(1.4)^t

h(14) = 1.64*(1.4)^(14)

h(14) = 182.236911939151

h(14) = 182.2

If 14 days have gone by, then we estimate the height is roughly 182.2 inches.

Compared to what the table says, which is 190 inches, we see that we have an underestimate. The error is about 190-182.2 = 7.8 which is under 10.

Answer: Choice C

The model under-predicts the actual height by less than 10 inches

Answer:

0.8665 = 86.65% probability that the sample proportion of Democrats will be greater than 52%.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]

Suppose 54% of the registered voters in a country are Democrats. Sample of 770.

This means that:

[tex]p = 0.54, s = \sqrt{\frac{0.54*0.46}{770}} = 0.01796[/tex]

What is the probability that the sample proportion of Democrats will be greater than 52%?

This is 1 subtracted by the p-value of Z when X = 0.52. So

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

By the Central Limit Theorem

[tex]Z = \frac{X - \mu}{s}[/tex]

[tex]Z = \frac{0.52 - 0.54}{0.01796}[/tex]

[tex]Z = -1.11[/tex]

[tex]Z = -1.11[/tex] has a p-value of 0.1335

1 - 0.1335 = 0.8665

0.8665 = 86.65% probability that the sample proportion of Democrats will be greater than 52%.

Answer:

the answer is 13a3b4. You’ll get the answer correctly. It’s not C

Step-by-step explanation:

5.7

Step-by-step explanation:

Lean- 6x

Hayden- x

x+ 6x=40 Equation

7x=40 Added the x and 6x

x= 5.7 Divided from each side

Answer:

36$

Step-by-step explanation:

20 percent of 30 is 6

30+6=36

Answer:

You don't have your options listed but if one of them is Point L is the midpoint of the segment, that would be your answer.

Step-by-step explanation:

Answer:

[tex] \cos(A + B) = \cos A \cos B - \sin A \sin \: B \\ but : \cos \: A = \sqrt{1 - ({ \frac{3}{5} })^{2} } = \frac{4}{5} \\ : \sin B = \sqrt{1 - {( \frac{ - 12}{13} })^{2} } = \frac{5}{13} \\ \therefore \cos(A + B) = ( \frac{4}{5} )( \frac{ - 21}{13} ) - ( \frac{3}{5} )( \frac{5}{13} ) \\ = \frac{ - 84}{65} - \frac{3}{13} \\ = \frac{ - 99}{65} \\ = - 1.52[/tex]

Answer:

C+9

Step-by-step explanation:

Answer:

30.8 degrees

Step-by-step explanation:

cosx = [tex]\frac{8.5}{9.9}[/tex]

x= [tex]cos^{-1}[/tex][tex]\frac{8.5}{9.9}[/tex]

= 30.8 degrees (nearest tenth of a degree)

9514 1404 393

Answer:

  (30, 72, 78)

Step-by-step explanation:

When testing a number of triples to see if they are Pythagorean triples, it can be convenient to let a spreadsheet do the math. The attachment shows us the triple at lower left (30, 72, 78) is a Pythagorean triple. That is, the sum of the squares of the smaller two numbers is the square of the larger, so they can form a right triangle.

__

You may recognize these numbers have the ratios 5:12:13, the ratios of an often-used triple.

Answer:

3

9

21

Step-by-step explanation:

For the first one use the law of total probability

B=A∩B+A'∩B

12=9+A∩B

A∩B= 3

For this one you should use demorgans law and the union formula

(A'∩B')=(AUB)'

AUB= A+B-A∩B

6+12-3=15

15'= 24-15 = 9

For this one use demorgans law again

(A'UB')=(A∩B)'

(A∩B)'= 24-A∩B= 24-3= 21

===============================================

Explanation:

When you list out the perfect squares, notice that 49 and 64 are on that list.

These are values we focus on because 49 < 52 < 64

We'll apply the square root to all three sides

[tex]49 < 52 < 64\\\\\sqrt{49} < \sqrt{52} < \sqrt{64}\\\\7 < \sqrt{52} < 8\\\\[/tex]

This shows that [tex]\sqrt{52}[/tex] is between 7 and 8

A calculator helps confirm this

[tex]\sqrt{52} \approx 7.2111\\\\[/tex]

Answer:

[22 x 21] / 2=231 or "c"

Step-by-step explanation:

Answer:

B. MIM

Step-by-step explanation:

A = 9

X = 5

I = 4

S = 2

E = 0

M = 7

XIS = 542, SEX = 205

542 + 205 = 747

747 = MIM

Answer and Step-by-step explanation:

8 + 4x -- Distributed the 4 to the 2 and x.

2(4 + 2x)  -- Taking out the 2 from the 8 and 4x, instead of the 4.

These are the answers.

#teamtrees #PAW (Plant And Water)

Answer:

C) 1/16

Step-by-step explanation:

2*2*2*2=16

Therefore, 2^(-4)=1/16.

Answer:

C) [tex]\frac{1}{16}[/tex]

Step-by-step explanation:

2⁻⁴

2⁴ = 2 × 2 × 2 × 2 = 16

[tex]\frac{1}{16}[/tex]

9514 1404 393

Answer:

  h = 2V/(ab)

Step-by-step explanation:

Divide both sides of the equation by the coefficient of h.

  V = (abh)/2

  h = 2V/(ab)

9514 1404 393

Answer:

 5

Step-by-step explanation:

Put the numbers where the letters are and do the arithmetic.

  5(3) -2(5) = 15 -10 = 5

Answer:

5

Step-by-step explanation:

5m - 2n

Where, we have given ; m = 3 & n = 5

plug the value in the equation

Answer: Yes since its + (-5/12) each time

Step-by-step explanation:

Answer:

I'm not sure if you have the question quite right.  Whenever you multiply x and y by something, it is a dilation.  So 3 of those are dilations.  If you add or subtract something from x, it is a translation.

Hope that helps.

Step-by-step explanation:

Answer:

85º and 95º

Step-by-step explanation:

supplementary angle total 180

(8x – 3) + (7x + 18)  = 180

Combine like terms

15x + 15 = 180

15x = 165

x = 11

---------------------

8x – 3

8(11) - 3

88 - 3

85º

7x + 18

7(11) + 18

77 + 18

95º

Answer: 5x + 4y ≤ 100

Step-by-step explanation:

5x + 4y ≤ 100

It has to be ≤ 100 because the dude only has $100 and can't exceed that.

Answer:

[tex]P(0.0014 < x < 0.0026) = 0.86639[/tex]

Step-by-step explanation:

Given

[tex]\mu = 0.002[/tex]

[tex]\sigma = 0.0004[/tex]

Required

[tex]P(0.0014 < x < 0.0026)[/tex]

First, calculate the z score

[tex]z = \frac{x - \mu}{\sigma}[/tex]

For x = 0.0014

[tex]z = \frac{0.0014 - 0.002}{0.0004}[/tex]

[tex]z = \frac{-0.0006}{0.0004}[/tex]

[tex]z = -1.5[/tex]

For x = 0.0026

[tex]z = \frac{0.0026 - 0.002}{0.0004}[/tex]

[tex]z = \frac{0.0006}{0.0004}[/tex]

[tex]z = 1.5[/tex]

So, we have:

[tex]P(0.0014 < x < 0.0026) = P(-1.5<z<1.5)[/tex]

From z probability table, we have:

[tex]P(-1.5<z<1.5) = 0.86639[/tex]

Hence:

[tex]P(0.0014 < x < 0.0026) = 0.86639[/tex]

Answer:

I only know that it will be 28 mm tall but you have to be more specific

Answer:

82/55

Step-by-step explanation:

11/12 * 12/121 - -6/5 * 70/60 = 1/11 + 14/10 = 1/11 + 7/5 = 5/55 + 77/55 = 82/55

The required solution of the given expression is 82/55.

Simplification involves applying rules of arithmetic and algebra to remove unnecessary terms, factors, or operations from an expression. The goal is to obtain an expression that is easier to work with, manipulate, or solve, For example, simplifying an algebraic expression might involve combining like terms, factoring, or using the distributive property

The given expression is,

= 11/12*12/121- -6/5*70/60

Simplify the above expression,
= 11/121+ 70/50

= 1/11 + 7/5

The common denominator between the two fractions is 55, so

= 5 + 77 / 55
= 82 / 55

Thus, the required solution of the given expression is 82/55.

Learn more about simplification here:

https://brainly.com/question/12501526

#SPJ2

Answer:

if 25c + 15d = 0, then d = -25/15c

Step-by-step explan

just yes, that

Answer:

What is the value of x?

Whenever we have a problem to solve we assume the unknown quantity(or value to be identified) as x. This is just a convention followed in algebra by using a variable to denote the unknown quantity and then arrive at the solution.

What is the value of X?

What's the value of X?

X + X = X, what is the value of X?

What is the value of x ? How can I find it?

Do you know the value of x?

Value of X can be any numerical value or anything but depends solely on your question .But I find no question ok lets take an example .

If an equation is given ,

X+2=4

=> X=4–2

=>X=2

We X's value as 2 .

Now another ,

X + Y = 5 , 2X + 5Y = 10

Now taking first equation

X = 5-Y ………………………..(1)

Now taking second equation

X= 10–5Y/2…………………(2)

Now,

2(5-Y) = 10–5Y

=> 10–2Y = 10–5Y

=> 2Y = 5Y

Y has no value here because this equation not correctly represented .

Hence ,

We conclude the value of X varies with equation .

Thank You ,

Answer:

28.61258...

Step-by-step explanation:

Don't really know how to explain this over a computer, but it is correct.

Hope that this helps!