What are the roots of x in -10x2 + 12x − 9 = 0?

Answer:

8.46

Step-by-step explanation:

59+6=65 65 divided by 508= 7.815 (7.82) 6 divided by 508=84.666 (8.67) then subtract 8.67 from 508 = 499.33 divided by 59 = 8.46 thats your answer.

Answer:

$8

Step-by-step explanation:

x=chaperone tickets

59(x+2)+6x=508

59x+118+6x=508

65x+118=508

65x=508

x=6

therefore 6+2=8

Answer:

x=-1 should be your answer

Answer:

see explanation

Step-by-step explanation:

Given

y = x² + 2x + 1

To find the zeros let y = 0, that is

x² + 2x + 1 = 0 ← x² + 2x + 1 is a perfect square

(x + 1)² = 0

x + 1 = 0 ( subtract 1 from both sides )

x = - 1 with multiplicity 2 ← zero

This indicates that the graph has a minimum turning point at (- 1, 0)

Note from your table

the value for x = - 1 should be y = 0 ( not - 2 )

Answer:

focus point of  satellite is (-125,-3)

Step-by-step explanation:

The question is on finding the focus point of a parabola

Given y²+6y-3x+3=0

Rewrite the equation

y²+6y=3x-3

Complete square on both sides

y²+6y+9=3x-3+9

Factorize

(y+3)²= 3x+6---------------------------------------(a)

(y+3)²= 3(x+2)

Compare  equation (a) to standard equations for parabola

(y+3)²= 3(x+2)

(y-b) ²= 2p(x-a),,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,(b)

2p=3------------divide both sides by 2

p=3/2

Vertex (a,b)=( -2,-3)........from equation (b)

Focus point is given by  (a+p/2 , b)...........................(c)

Substitute values in equation c above;

(-2+3/4 , -3) = (-5/4 ,-3) =(-1.25, -3)

Answer:

It is the secon option ∆TRS ≈ ∆TPQ ; SAS

Step-by-step explanation: angle t is equal to angle t because it is the same angle

line TR divided by line TP is equal to line TS divided by TQ

Answer:  The correct option is

[tex](B)~\triangle TRS\sim \triangle TPQ,~SAS\sim.[/tex]

Step-by-step explanation:  We are given to check whether the triangles in the figure are similar or not. If so, we are to state the similarity statement.

From the figure, we note that

in the triangles TPQ and TRS, we have

[tex]TP=42,~TQ=28,TR=42+6=48,~~TS=28+4=32.[/tex]

Therefore, the ratios of the corresponding sides of two triangles are

[tex]\dfrac{TP}{TR}=\dfrac{42}{48}=\dfrac{7}{8},\\\\\\\dfrac{TQ}{TS}=\dfrac{28}{32}=\dfrac{7}{8}.[/tex]

Now, in ΔTPQ and ΔTRS, we have

[tex]\dfrac{TP}{TR}=\dfrac{TQ}{TS},\\\\\\m\angle TPQ=m\angle TRS~~~\textup{[common angle]}[/tex]

So, triangles TPQ and TRS are similar by SAS proportionality postulate.

Thus, the correct option is

[tex](B)~\triangle TRS\sim \triangle TPQ,~SAS\sim.[/tex]

Divide the number of wooden cabinets by the number of days.

24 / 8 = 3

Carlos installed an average of 3 cabinets each day.

To find the average number of cabinets installed each day, we divide the total number of cabinets installed by the number of days. In this case, Carlos installed 24 cabinets in 8 days, so we divide 24 by 8 to get an average of 3 cabinets installed each day.

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Answer: Reflection

Step-by-step explanation:

Looking at this as a reference they reflect across the y-axis

D and B because you at the picture

The correct answers are A, B, and C for the given function y = (2/3)x.

The slope of a line is defined as the gradient of the line.

The equation y = (2/3)x represents a line in the coordinate plane, where the x value of a point on the line is multiplied by the constant 2/3 to get the y value of that point.

A. The equation y = (2/3)x represents a proportional relationship because for every change in x by some unit, there is a corresponding change in y by 2/3 times that unit.

B. The unit rate of change of y with respect to x is 2/3. This means that for every unit increase in x, the value of y will increase by 2/3 times that unit.

C. The slope of the line is 2/3. The slope of a line gives you the rate of change of y with respect to x, and in this case, the slope is 2/3.

D. A change of three units in x results in a change of two units in y. Since the unit rate of change of y with respect to x is 2/3, a change of three units in x will result in a change of 2/3 × 3 = 2 units in y.

E. A change of three units in x results in a change of one unit in y is not true, because the unit rate of change of y with respect to x is 2/3, which is different from 1.

Therefore, the correct answers are A, B, and C.

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Answer:

option A

The base is e^-1

Step-by-step explanation:

Given in the question a function, f(x) = (1/e)[tex]^{x}[/tex]

This function can also be write as.

f(x) =[tex](e^{-1})^{x}[/tex]

by using Negative Exponent Rule

[tex]x^{-n}=\frac{1}{x^{n}}[/tex]

This says that negative exponents in the numerator get moved to the denominator and become positive exponents.

Answer:

Inequality: 50-1.99x=30

She has 10 days.

Step-by-step explanation:

So, she starts off with with $50. From there, she is buying songs that are $1.99 (everyday). You could do this multiple ways:

Guess and Check, or use Algebra.

But for Algebra:

If we graph this out, the y intercept would be (0, 50), because she is starting out with $50. From there, she is spending 1.99 each day, so the slope would be 1.99/1. So basically, we would write this as 50-1.99x (that is the expression).

We would also set this equal to 30, because we are trying to see how many days it would take to still keep her balance above $30, but make it as close to 30 as possible. (x represents the # of days.

So the inequality would be 50-1.99x=30

And, when we isolate the variable and solve, we would see that she can buy a total of 10 songs over 10 days. (So basically, she has 10 days to stay over $30).

Sarah can use her $50 gift card to download a $1.99 song for 10 full days before her balance falls below $30. This is found by solving the inequality 50 - 1.99d > 30, which indicates the maximum days she can download with the card's balance staying above the threshold.

Sarah's problem can be represented by an inequality that describes the number of $1.99 song downloads she can make before her $50 music gift card drops below $30. To find out how many days she can continue to download a song without going below a $30 balance, we'll represent the number of days as d, and the cost per day as $1.99.

The inequality will be: 50 - 1.99d > 30.

Step 1: Subtract 50 from both sides to isolate the term with d.

-1.99d > -20

Step 2: Since we're dealing with a negative coefficient for d, divide both sides by -1.99, and flip the inequality sign (a rule when dividing by a negative).

d < 20/1.99

d < 10.05

Since Sarah can't download a fraction of a song, she can download a song for full days without the balance going below $30 for 10 days.

Therefore, Sarah can download a song for 10 full days with the balance of her gift card staying above $30. After that, her balance would drop below $30 if she continues.

Answer:

Slope = 1/5

Step-by-step explanation:

passing through points A(5,4) and B(0,3)

Slope = (4 - 3)/(5 - 0) = 1/5

Notice that 242 = 4*60.5. This means after 242 minutes, the sample decays to [tex]\dfrac1{2^4}=\dfrac1{16}[/tex] of its original amount. So you end up with

[tex]\dfrac{100\,\mathrm g}{16}=\boxed{6.25\,\mathrm g}[/tex]

After 242 minutes, 6.25 grams of Bismuth-212 remain from an original 100-gram sample, calculated based on its half-life of 60.5 minutes through the concept of radioactive decay.

The question involves calculating the amount of Bismuth-212 left from a 100-gram sample after 242 minutes, given its half-life of 60.5 minutes. To find the amount of Bismuth-212 remaining, we use the formula for radioactive decay which involves dividing the total time by the half-life to determine the number of half-lives that have passed.

First, calculate the number of half-lives passed:
Number of half-lives = Total time / Half-life = 242 minutes / 60.5 minutes = 4

Next, calculate the remaining amount after each half-life. After 1 half-life, 50 grams remain; after 2 half-lives, 25 grams; after 3 half-lives, 12.5 grams; and after 4 half-lives, 6.25 grams remain.

Therefore, 6.25 grams of Bismuth-212 remains after 242 minutes.

Answer:

Step-by-step explanation:

We have four congruent triangles with base b = 16cm and height h = 12cm.

The formula of an area of a triangle:

[tex]A=\dfrac{bh}{2}[/tex]

Substitute:

[tex]A=\dfrac{(16)(12)}{2}=(8)(12)=96\ cm^2[/tex]

The latearal area:

[tex]L.A.=4A\to L.A.=4(96)=384\ cm^2[/tex]

For the surface area we need the area of a base.

The base is a square with side a = 16cm.

The area of the base:

[tex]B=16^2=256\ cm^2[/tex]

The surface area:

[tex]S.A.=L.A.+B\to S.A.=384+256=640\ cm^2[/tex]

Answer:

14 in

Step-by-step explanation:

Does it want me to explain what the in.cm,mm,m are or what id it in its

The net of cube has 6 identical squares with side 14 units.

Net diagram is a 2-dimensional plane figure which can be folded to form a 3-dimensional figure. Or we can say net diagrams are the figures which obtained by unfolding some 3D figures.

Given that, the cube with edges 14 units.

A solid shape with six square faces is called a cube. Because every square face has the same side length, each face is the same size. A cube has 8 vertices and 12 edges. An intersection of three cube edges is referred to as a vertex.

The net of cube has 6 squares

Therefore, the net of cube has 6 identical squares with side 14 units.

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Answer:

-5 and 2

Step-by-step explanation:

Apexvs

Answer:

-5 and 2

Step-by-step explanation:

Apex

Answer:

slope = [tex]\frac{1}{2}[/tex]

Step-by-step explanation:

Calculate the slope m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (8, 1) and (x₂, y₂ ) = (24, 9)

m = [tex]\frac{9-1}{24-8}[/tex] = [tex]\frac{8}{16}[/tex] = [tex]\frac{1}{2}[/tex]

Answer:

Less than 100. Z=83

Step-by-step explanation:

The mean is the average found by adding the sum of the data points and dividing by the number of them. Here there are 3 cars whose speeds are 101, 116, and Z or unknown. The mean of them is 100. Solve for Z.

100 =(101+116+Z)/3

300=217+Z

83=Z

Answer:

y = - 4x - 13

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

here m = - 4, thus

y = - 4x + c ← is the partial equation of the line

To find c substitute (- 2, - 5) into the partial equation

- 5 = 8 + c ⇒ c = - 5 - 8 = - 13

y = - 4x - 13 ← equation of line

The equation of the line with slope -4 passing through the point (-2, -5) is y = -4x - 13.

To find the equation of a line with a given slope that passes through a specific point, you can use the point-slope form of a linear equation, which is y - y1 = m(x - x1), where m is the slope and (x1, y1) is the point the line passes through. In this case, the slope is -4 and the line passes through the point (-2, -5). Plugging these values into the point-slope form, the equation becomes y - (-5) = -4(x - (-2)), which simplifies to y + 5 = -4(x + 2). Expanding the right side gives y + 5 = -4x - 8. To solve for y, subtract 5 from both sides to get y = -4x - 13.

Answer:

y = 11.2 in

Step-by-step explanation:

Given a tangent and a secant from an external point to a circle, then

The square of the measure of the tangent is equal to the product of the external part and the entire secant, that is

5(5 + y) = 9²

25 + 5y = 81 ( subtract 25 from both sides )

5y = 56 ( divide both sides by 5 )

y = 11.2

Answer: y = 11.2

Step-by-step explanation:

45:15 =

15:5 =

3:1

Normally, the ratio would be 45:15, but you should simplify like shown above.

The book to magazine ratio of the numbers of books and magazines Manny read over the summer is 3:1.

The student's question pertains to finding the ratio of books Manny read over the summer to the magazines he read. Given that Manny read 45 books and 15 magazines, these numbers can be turned into a ratio by placing them over each other (books/magazines). Therefore, the book to magazine ratio would be 45:15. However, this ratio can be simplified by dividing both numbers by their greatest common divisor, which in this case is 15. When both numbers are divided by 15, the simplified book to magazine ratio is 3:1. Hence, for every 3 books Manny reads he also reads 1 magazine.

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Answer:

Step-by-step explanation:

The general form of a linear function is ax + b.

f(x) = ax + b

f(1) = a + b = -7

f(2) = 2a + b = -10

So using a system of equations we solve for 'a' and 'b'.

a + b = -7 | 2a + b = -10

We multiply the first one by -1.

-a - b = 7 | 2a + b = -10

And then we solve the system by elimination(by adding the equations):

a = -3

Solving for b: a + b = -7 <=> -3 +b = -7 => b = -4

So the general rule of the function is:

f(x) = -3x - 4

Answer:

B. 5040

Step-by-step explanation:

We want to find the value of [tex]7![/tex].

We read [tex]7![/tex] as ''seven factorial''

By definition, [tex]n!=n(n-1)(n-2)...3\cdot2\cdot1[/tex]

We need to find the product of all the positive integers less than or equal to the given number.

This implies that:

[tex]7!=7\times 6\times 5\times 4\times 3\times 2\times 1[/tex]

[tex]7!=5040[/tex]

Answer:

I think it’s C

Step-by-step explanation:

The answer would be B, Supplementary Angle, Since half the circle would be 180 degrees also if this isn’t enough information,

Answer:

10.4 cents

Step-by-step explanation:

40 pecans/$3.84 gives you pecans per dollar

Final answer:

To find the probability of Damon choosing two white socks, calculate the probabilities step by step. The probability of Damon picking two white socks is approximately 33%.

Explanation:

To find the probability of Damon choosing two white socks from his drawer, we can calculate it step by step:

Picking the first white sock: 14 white socks out of 24 total socks, so probability = 14/24

Picking the second white sock: 13 white socks left out of 23 total socks, so probability = 13/23

Multiplying the two probabilities together: (14/24) x (13/23) = 91/276, which simplifies to approximately 0.330 or 33%.

125x=10y.

That is my best shot, I'm sorry lol.

Answer:

$136.00

Step-by-step explanation:

100 + 12 +12 + 12

simple interest is only against the loan itself

compound interest is the loan plus interest . . .then that sum . . .again then that some

Answer:

(4, 7)

Step-by-step explanation:

The midpoint formula is (((x1 + x2)/2), ((y1+y2)/2)))

x1 +x2 = 1 +7 = 8

8/2 = 4

y1 + y2 = 10 + 4 = 14

14/2 = 7

(4, 7) is the midpoint

Answer:

M = (4, 7)

Step-by-step explanation:

Using the midpoint formula

M = [[tex]\frac{1}{2}[/tex](x₁ + x₂ ), [tex]\frac{1}{2}[/tex](y₁ + y₂ ) ]

with (x₁, y₁ ) = P(1, 10) and (x₂, y₂ ) = Q(7, 4)

M = [ [tex]\frac{1}{2}[/tex](1 + 7), [tex]\frac{1}{2}[/tex](10 + 4) ] = (4, 7)

job a would be the biggest money maker job. $15 an hour working at most 15 hours = $225. $8 an hour working 34 hours = $272. You would make $47 more at job a

Answer:

You should choose Job A.

Step-by-step explanation:

I did the math.

The equation that can be used to solve for b is Tan (30)= 5/b.

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The equations that can be solved for 'b' are 'Tan (30)= 5/b' and 'Tan (30) = 10/b', resulting in solutions 'b = 5/Tan(30)' and 'b = 10/Tan(30)' respectively.

The equations that can be used to solve for 'b' are Tan (30)= 5/b and Tan (30)=10/b. To solve for 'b' in these scenarios, you would rearrange the equations to isolate 'b'. For example, in the first equation, multiplying both sides by 'b' and then dividing by Tan(30) would give you 'b = 5/Tan(30)'. In the second scenario, 'b = 10/Tan(30)'. These are the solutions for 'b' and indicate the values 'b' would need to be for the equations to hold true.

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Answer:

X * (X +1) = 420

X^2 + X = 420

X^2 + X -420 = 0

X = 20

Step-by-step explanation:

For this case we have [tex]20 * 21 = 420.[/tex] We must find an equation that allows us to find the smallest value. So:

Let "x" be the variable that represents the smallest number. Thus, "x + 1" represents the consecutive integer. The equation would be given by:

[tex]x * (x + 1) = 420\\x ^ 2 + x = 420\\x ^ 2 + x-420 = 0[/tex]

To factor, we must find two numbers that multiply as a result -420 and sum as a result 1.

These numbers are:

[tex]21, -20\\21-20 = 1\\21 * (-20) = -420[/tex]

Thus, the factorization is:

[tex](x-20) (x + 21) = 0[/tex]

The roots are:

[tex]x = 20\\x = -21[/tex]

Effectively, the smallest integer was found,[tex]x = 20[/tex].

Answeer:

[tex]x ^ 2 + x-420 = 0\\(x-20) (x + 21) = 0[/tex]