what is the factored form of 3x^2+9x=0

The approximate percent increase between carbon dioxide levels 150,000 years ago and carbon dioxide levels today is about 50%.

Carbon dioxide (\(CO2\)) levels fluctuate naturally over long periods of time due to various factors. Comparing the approximate \(CO2\) levels from 150,000 years ago to today, there has been a significant increase of about 50%. During the pre-industrial era, \(CO2\) levels were relatively stable at around 280 parts per million (ppm).

However, with the advent of industrialization and the burning of fossil fuels, human activities have contributed to the release of large amounts of \(CO2\) into the atmosphere. Currently,\(CO2\) levels have risen to over 400 ppm. To calculate the approximate percent increase, we can use the formula: ((New Value - Old Value) / Old Value) * 100. Applying this formula, the percent increase in \(CO2\) levels from 150,000 years ago to today would be approximately 50%.

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Answer:

What do you need help with?

Step-by-step explanation:

Answer: A 4 91/100

Step-by-step explanation:  its 491/100  because the 100  is 1 and 4 is the number 4 and 91/100 is .91

I think that this number is already prime.

Step-by-step explanation:

I could be wrong

The predicted percentage of fatal accidents due to speeding for 40-year-olds is approximately 2.92%.

(a) Here is a description of the scatter diagram displaying the data:

The scatter diagram shows the relationship between the age of licensed automobile drivers (x) and the percentage of fatal accidents due to speeding (y). The x-axis represents the age of the drivers, and the y-axis represents the percentage of fatal accidents due to speeding. The data points are plotted on the graph, indicating the corresponding x and y values for each data pair.

(b) Given sums and correlation coefficient:

Σx = 329
Σy = 109
Σx2 = 18,263
Σy2 = 2339
Σxy = 3843
r ≈ -0.9549

(c) Calculating x, y, and the equation of the least-squares line:

To find x and y, we can use the given sums:

x = Σx / n = 329 / 7 ≈ 47
y = Σy / n = 109 / 7 ≈ 15.5714

To find the equation of the least-squares line (y hat = a + bx), we can use the formulas:

b = Σxy - (Σx * Σy) / n) / (Σx2 - (Σx)^2 / n) ≈ -0.5755
a = y - bx ≈ 24.7086

Therefore, the equation of the least-squares line is:
y hat = 24.7086 - 0.5755x

(d) Graphing the least-squares line:

The graph of the least-squares line will be a straight line with a negative slope. The point (x, y) will be plotted on the line.

(e) Calculating the coefficient of determination (r^2) and the percentages:

r^2 = (-0.9549)^2 ≈ 0.9119
The coefficient of determination (r^2) represents the proportion of the variation in y that can be explained by the corresponding variation in x and the least-squares line. Therefore, approximately 91.19% of the variation in y can be explained, and the remaining 8.81% is unexplained.

(f) Predicting the percentage of fatal accidents due to speeding for 40-year-olds:

To predict the percentage of fatal accidents due to speeding for 40-year-olds, we can substitute x = 40 into the equation of the least-squares line:
y hat = 24.7086 - 0.5755(40) ≈ 2.917

Therefore, the predicted percentage of fatal accidents due to speeding for 40-year-olds is approximately 2.92%.

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Answer:

1) z=?

using similar triangles:

x / z = (8+x) / 20

20x / (8+x) = z since x=8

z = 20(8) / (8+8) = 160 / 16 = 10

or

Midsegment theorem:

z = (1/2)(20) = 10

2) x = (1/2)(13) = 6.5

or

ratio of similar triangles:

4/ x = 8/13

x = 4(13)/8 = 6.5

3) x = 2(10) = 20

or

similar triangles:

a/10 = 2a/x

ax = 20a

x = 20

4) a/5 = 2a/(x+1)

a(x+1) = 10a

x+1 = 10

x = 10 -1 = 9

5)

similar triangles:

a/31 = 2a/2x

a(2x) = 62a

2x = 62

x = 31

midsegment theorem:

2x = 2(31)

2x = 62

x = 31

Answer:

Step-by-step explanation:

For the polynomial to be divisible by x-4, hence x = 4

Given

p(x) = cx^3-15x -68

p(4) = c4^3-15(4)-68

p(4) = 64c-128

If p(4) = 0

0= 64c - 128

64c = 128

c = 128/64

c = 2

hence the value of c is 2

h = 11.9 cm

cos = adjacent/ hypotenuse

therefore:

cos(24) = h/ 13

rearrange:

h = 13cos(24)

put into calculator:

h = 11.8760...

rounded to one decimal point:

h = 11.9cm

The arc length of the sector is 7.065 approximately 7.1 cm. Then the correct option is D.

It is a locus of a point drawn equidistant from the center. The distance from the center to the circumference is called the radius of the circle.

The central angle of π/2 radians in a circle with a radius of 4.5 cm.

Then the arc length will be

\(\rm Arc \ length = \dfrac{\pi /2}{2 \pi} * 2*\pi * 4.5\\\\\\Arc \ length = \dfrac{1}{2} * 3.14*4.5\\\\\\Arc \ length = 7.065\)

Then the arc length is 7.065 approximately 7.1 cm. Then the correct option is D.

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Answer:

D is the answer

Step-by-step explanation:

No Reason just try it out

9514 1404 393

Answer:

  x = 26

Step-by-step explanation:

The sum of the measures of the angles in a triangle is 180°.

  (2x)° +50° +(3x)° = 180°

  5x +50 = 180 . . . . . . . divide by °, collect terms

  x +10 = 36 . . . . . . . . . divide by 5

  x = 26 . . . . . . . . . . . . . subtract 10

Three ratios that are equivalent to 3:2:20 are: 9:6:60  27:18:180 and 81: 54:540 .

When comparing two or more numbers, the mathematical concept of ratio is applied. It is a comparison tool to show how large or tiny a given quantity is. A ratio compares two amounts by dividing them. Here, the dividend is referred to as the "antecedent" and the "consequent" is the divisor.

Make sure to multiply the denominator and numerator by the same value each time to keep getting equal ratios.

Three ratios that are equivalent to 3:2:20 are: 9:6:60  

Multiply the ratios by 9

27:18:180 and 81: 54:540 .

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Answer:∠KJG and ∠FGJ

Step-by-step explanation:

Alternate interior angles are diagonal from each other and are the same value.

Alternate Interior Angles. ... Alternate Interior Angles are a pair of angles on the inner side of each of those two lines but on opposite sides of the transversal

here the right answer is option "c" that is

\(angle \: kjg \: and \: angle \: fgj\)

hope it helps you

Answer:

36 adult dogs

Step-by-step explanation:

90÷(3+2)×2

=90÷5×2

=18×2

=36

Answer:

transitive property

Step-by-step explanation:

Generally proofs flow naturally from one step to the next.  Consequently, each step usually follows from the previous step, and the Reason given justifies why that change is valid.

From statement 8, note that \(90^{o}=m\angle{ABD}\)

For statement 9, the proof asserts that \(m\angle{ABC}=m\angle{ABD}\)

What changed between line 8 and 9?  The left side of the equation lost it's 90 degrees, and it became the measure of angle ABC.

So, what justifies changing the 90degrees into a measure of an angle (specifically, the measure of angle ABC)?

Recall from statement 3, that \(m\angle{ABC}=90^{o}\).

The "substitution property" would be a valid reason for step 9, (but of the given options, that isn't one, so we must look for another valid reason).

Recall that the transitive property states:

\(\text{If }a=b\text{ and }b=c, \text{then }a=c\)

There are three parts,

1. the first part needs a=b

2. the second part needs b=c

3. the third part produces a=c

Notice that in the second part, b=c, and then for the third part, on the left side, the "b" disappears, and the "a" sort of appears out of nowhere.

Statement 8 is like the second part, and statement 9 is like the third part.

Replacing "a" with \(m\angle{ABC}\), replacing "b" with \(90^{o}\), and replacing "c" with \(m\angle{ABD}\), we can update the transitive property and see how it applies to our situation:

Original transitive property:  \(\text{If }a=b\text{ and }b=c, \text{then }a=c\)

Updated transitive property:  \(\text{If }m\angle{ABC}=90^{o}\text{ and }90^{o}=m\angle{ABD}, \text{then }m\angle{ABC}=m\angle{ABD}\)

In order to use the transitive property, we need the first part and the second part to be true, and then it will be a valid reason for the last part to be true.  The first part was already proven back in statement 3, the second part was just proven in statement 8, so the conclusion (the third part) is valid and can be statement 9, because of the transitive property.

Answer:

1 1/2

Step-by-step explanation:

1 1/2 + 3 1/2 = 5

6 1/2 - 5 =1 1/2

Answer:

  11 feet

Step-by-step explanation:

You want the length of the longest side of a triangle when the perimeter is 27 feet and the side lengths are consecutive odd integers.

The middle of three consecutive odd integers is their average. The average is their sum divided by 3, so is (27 ft)/3 = 9 ft.

Then the side lengths are 7 ft, 9 ft, 11 ft.

The longest side is 11 feet long.

__

Additional comment

The perimeter is the sum of the side lengths.

After considering the given data we conclude that there truth table is possible and is placed in the given figures concerning every sub question.

A truth table is a overview that projects  the truth-value of one or more compound propositions for each possible combination of truth-values of the propositions starting up the compound ones.
Every row of the table represents a possible combination of truth-values for the component propositions of the compound, and the count of rows is described by the range of possible combinations.
For instance, if the compound has just two component propositions, it comprises  four possibilities and then four rows to the table. The truth-value of the compound is projected on each row comprising the truth functional operator.
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Answer:

8jdhdhdhdhfbdudhdhdhd

Answer:

b

Step-by-step explanation:

Using the difference, the height of stack increased per cup is 0.5 centimeters.

The graph of the question is given below:

In the given question we have to find the how much does each cup after the first add to the height of the stack.

From the graph we can see that when there have 3 cups then the height of the stake is 5.5. When there have 8 cups then the height of the stack is 8.

So the incresed cup = 8-3 = 5

Incresed height of the stack = 8-5.5 =2.5

So the height of stack increased per cup = increased height/increased cup

the height of stack increased per cup = 2.5/5

the height of stack increased per cup =0.5

Hence, the height of stack increased per cup is 0.5 centimeters.

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Answer:

2x+3y+2

Step-by-step explanation:

use commutative property

7x-5x+4y-y+2

2x+4y-y+2

2x+3y+2

The multiplication shows that the total steps for the ramp will be 28 inches.

From the information given, the school has 4 steps to the front door and each step is 7 inches tall.

In this case, the total steps of the ramp will be gotten by multiplying the values. This will be:

= 4 × 7 = 28 inches.

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Answer:

2x3+4 and x-y to 3rd and 2nd multiply to get=6/4

Step-by-step explanation:

Answer:

Sabrinas work

Step-by-step explanation:

5+c+c+c-4

5+3c-4

=3c+1

The distance at which the chimney is to be installed is required.

The chimney can be installed is at either 17.5 feet or 2.5 feet along the width of the roof.

The height of the roof is given by the function

\(f(x)=-\dfrac{4}{3}|x-10|+40\)

where, x is the distance along the width of the roof

The height of the chimney is at least 30 feet, so

\(30=-\dfrac{4}{3}|x-10|+40\\\Rightarrow 30-40=-\dfrac{4}{3}|x-10|\\\Rightarrow -10\times -\dfrac{3}{4}=|x-10|\\\Rightarrow |x-10|=7.5\)

\(\\\Rightarrow x-10=7.5\\\Rightarrow x=17.5\)

or

\(x-10=-7.5\\\Rightarrow x=2.5\)

So, the chimney can be installed at 17.5 feet or 2.5 feet.

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Answer:

6.4 x 10 to the power of 3

Step-by-step explanation:

always have 1 number after the decimal point and then times by ten to the power of 3.

Answer:

64x10²

Just move it to the left 2 times.

that other answer is a virus dont click it

cell wall : gives plant cell its shape, rigid

cell membrane: more selectively controls what goes in and out of the cell, acts like a skin

dunno about grid

The inequality that models the situation if Jasmine and Sammy both worked the same number of hours (h) is 50 + 7h > 20 + 10h.

The hours worked to make this true is 10 hours.

Inequalities are created through the connection of two expressions. It should be noted that the expressions in an inequality aren't always equal. Inequalities implies that the expressions are not equal. They are denoted by the symbols ≥ < > ≤.

Let the number of hours be h.

Jasmine earns $10 an hour. She also received $20 in tips. This will be 20 + 10h.

Sammy earned $7 per hour but receives a bonus of $50. This will be 50 + 7h

This will be illustrated as:

50 + 7h > 20 + 10h.

10h - 7h > 50 - 30

3h > 30.

Divide

h > 30/3

h > 10

The hours will be 10 hours.

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