-2.30 as a fraction....

Answer:

Work shown below!

Step-by-step explanation:

\(\sqrt{-18}=\sqrt{18i^{2} } =\sqrt{2*9i^{2} }=3i\sqrt{2}\)

\(2\sqrt{-16} =2\sqrt{16i^{2} } =4i*2=8i\)

Answer:

x³-3x²-10x+24

Step-by-step explanation:

Ha, you're in luck; I just learned this last week

Zeros: 2, 4, -3

(x-2)(x-4)(x+3) (I will be multiplying the zeros 2 and 4 first)  ——Distributive Property

(x²-4x-2x+8)(x+3) ––Combine like terms

(x²-6x+8)(x+3) ––Distibutive Property

x³+3x²-6x²-18x+8x+24 ––Combine like terms

x³-3x²-10x+24 ––Final answer, to the third degree

Answer: 80%. Hope this helps, please consider making me Brainliest.

Step-by-step explanation:

To find the percentage, divide the sale cost by the original cost:

27.60/34.50

Let's multiply both sides by 10 to make the operation easier:

27.6/34.5 ( I eliminated the zero's because they kind of have no use) -->

276/345, now solve:

276/345 = 0.8

0.8 = 80%

The percentage is 80%.

Answer:

i don't speak Spanish but I think it's 3

Answer: Sample mean \((\overline{x})\)

Step-by-step explanation:

Given: A study was conducted to determine the average birth weight (in ounces) of babies born in hospitals in a five county area of a given state.

i.e. The parameter of the study is \(\mu\) . (Population mean).

A Simple Random Sample of Recent birth records at the local hospitals were selected and the confidence interval was calculated to be (117.89 ounces, 124.91), at a 95% level of confidence.

Since a measure of sample is a statistic , and this case statistic is sample mean denoted by \(\overline{x}\).

Hence, the statistic is appropriate for this confidences interval : \(\overline{x}\)

Answer:

42

Step-by-step explanation:

For the step, let's get an answer about how long it would take for Tina to run around the base in 10 minutes.

For this, you would just need to do: 12 ÷ 2 = 6

So, 6 runs = 10 minutes

Since 70 ÷ 10 = 7 ...

All we will have to do is 7 x 6 which would equal 42.

Therefore, Tina can run 42 circles around the base in 70 minutes.

-kiniwih426

Answer:

green line or "b"

Step-by-step explanation:

we can set this up into the slope intercept form

y=mx+b

where m is the slope and b is y intercept

12=3x+4y

-3x -3x

-3x+12=4y

/4.  /4.  /4

-3/4x+3=y

we can see the only line with a negative slope and a y intercept at 3 is the green line or "b"

hopes this helps please mark rainliest

Answer:

\(y1 = 4 \\ x1 = 3\)

\(y - y1 = m(x - x1)\)

\(y - 4 = 0(x - 3)\)

\(y - 4 = 0\)

\(y = 4\)

Answer:

is A

Step-by-step explanation:

I got it right........

Answer:

C The coefficient of determination

Step-by-step explanation:

In statistics, the coefficient of determination, denoted R² or r² and pronounced "R squared", is the proportion of the variation in the dependent variable that is predictable from the independent variable.

Answer:

Engineer: 9.5 hr

Assistant: 4.5 hr

Step-by-step explanation:

To solve this problem, we can create and solve a system of equations.

Define the variables:

Given the engineer's time is billed at $40 per hour, and her assistant's is billed at $10 per hour, and a customer received a bill for $425 for a certain job:

Given the assistant worked 5 hours less than the engineer:

Therefore, the system of equations that represents the problem is:

\(\begin{cases}40x+10y=425\\ \quad \qquad \;\;\;y=x-5\end{cases}\)

Substitute the second equation into the first equation to eliminate y:

\(40x+10(x-5)=425\)

Solve the equation for x to find the number of hours the engineer worked:

\(\begin{aligned}40x+10(x-5)&=425\\40x+10x-50&=425\\50x-50&=425\\50x&=475\\x&=9.5\end{aligned}\)

Therefore, the engineer worked 9.5 hours.

Substitute the found value of x into the second equation and solve for y to find the number of hours the assistant worked:

\(\begin{aligned}y&=x-5\\y&=9.5-5\\y&=4.5\end{aligned}\)

Therefore, the assistant worked 4.5 hours.

Answer:

10

Step-by-step explanation:

Distance is always positive

|-10-0|=10

Mark me brainliest!!

Answer:

10! if you can make me brainiest id be happy:)!

Step-by-step explanation:

Answer:

line s and t would not meet even if you extend them and also they have the same slope and gradient

Answer:

36

Step-by-step explanation:

48x=1728

x=36

Answer:

36 cm^3

Step-by-step explanation:

Because you need to multiply 12x3 giving you 36.

Answer:

its a

Step-by-step explanation:

i took the test

Answer:

Can I see a picture?

Step-by-step explanation:

Im not fully sure but it might be the 3rd one!

The coordinate points to plot on the graph are (0, 5) and (1, 8). The graph for the given functions are plotted below.

The given functions are f(x) = 3x + 4 and h(x) = f(x) +1.

Functions are the fundamental part of the calculus in mathematics. The functions are the special types of relations. A function in math is visualized as a rule, which gives a unique output for every input x.

Here, h(x)=3x+5

The graph of f(x) = 3x + 4 is as follows:

Graph the line using the slope and y-intercept, or two points.

Slope: 3

y-intercept: (0, 4)

The coordinate points to plot on the graph are (0, 4) and (1, 7)

The graph of h(x)=3x+5 is as follows:

Graph the line using the slope and y-intercept, or two points.

Slope: 3

y-intercept: (0, 5)

The coordinate points to plot on the graph are (0, 5) and (1, 8)

The coordinate points to plot on the graph are (0, 5) and (1, 8). The graph for the given functions are plotted below.

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Note that the coordinates of the point A' after rotating 90 degrees clockwise about the point (0,1) are (3, -4). (Option B)

To rotate a point 90 degrees  clockwise about a given point,we can follow these steps -

Translate the coordinates   of the given point so that the center of rotation is at the origin.   In this case,we subtract the coordinates   of the center (0,1) from the coordinates of point A (5,4) to get (-5, 3).

Perform the rotation by swapping the x and y coordinates and changing the sign of the   new x coordinate. In this case,we  swap the x and y coordinates of (-5, 3)   to  get (3, -5).

Translate the coordinates back to their original position   by adding the coordinates of the center (0,1)  to the result from step 2. In   this case, we add (0,1) to (3, -5) to get (3, -4).

Therefore, the coordinates   of the point A' after rotating 90 degrees clockwise about the point (0,1) are (3, -4).

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Answer: 5x-2

Step-by-step explanation:

Step-by-step explanation:

the karen has 5x then .i hope this is answer

The S subject formula of the given expression will be given as s = tk/2p.

In order to find the S subject formula, we have to make the equation equal to s. This can be done by first making the equation in mathematical form and then taking s on one side and the other terms on the other side.

The equation given in the question is t = 2p (s ÷ k) which can also be written as t = 2p (s/k). Now, in order to make the s formula of the given expression we first cross multiply k on the left-hand side.

tk = 2p (s)

Now, we divide the expression 2p on the left-hand side.

tk/2p = s

=> s = tk/2p

This expression gives us the S formula.

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From the given box and whisker plot, On average, visitors in January were 10 years older than visitors in July.

A box and whisker plot is a graph plot that indicates whether a distribution is skewed and whether there are potential unusual observations (outliers) in the data set.

Now, the way to interpret it is as follows;

Now, looking at the box and whisker plot for January and July, we can say that those in January are approximately 10 years older than those in July.

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Given that XZ is the perpendicular bisector of segment WY, the numerical value of k is 6.

A bisector divides a segment or angle into two equal halves.

Given the data in the question;

Since XZ is a perpendicular bisector of segment WY,

Segment WX is equal to Segment XY

Segment WX = Segment XY

Plug in the given values and solve for k.

3k + 17 = 7k - 7

Collect like terms

3k - 7k = -7 - 17

-4k = -24

Divide both sides by the coefficient of k

-4k/-4 = -24/-4

k = 6

Given that XZ is the perpendicular bisector of segment WY, the numerical value of k is 6.

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Answer:

c

Step-by-step explanation:

bu step explanatiob by 3

Answer:

(-3,-3) and (0,6)

Step-by-step explanation:

Wherever the two lines intercept, is the answer. Based on the graph, you can see that the lines intercept at (-3,-3) and (0,6).

The stem is the tens digit and the leaf is the ones digit for the number of minutes.

The fewest number of minutes is 20

The greatest number of minutes is 44

The question asks for the fewest number of minutes = 20

The measure of the j of triangle ΔHIJ is given by the law of sine and is given by j = 2.3 inches

The relationship between a triangle's sides and angles is provided by the Law of Sines. Trigonometry's law of sines can be expressed as a/sinA = b/sinB = c/sinC, where a, b, and c are the lengths of the triangle's sides, and A, B, and C are the triangle's respective opposite angles.

Law of Sines :

a / sin A = b / sin B = c / sin C

Given data ,

Let the triangle be represented as ΔHIJ

Now , the equation will be

The measure of i = 2.8 inches

The measure of ∠I = 68°

The measure of j = j

The measure of ∠J = 50°

Now , from the law of sines , we get

a / sin A = b / sin B

Substituting the values in the equation , we get

2.8 / sin ( 68 )° = j / sin ( 50 )°

On simplifying the equation , we get

2.8 / 0.92718 = j / 0.766044

Multiply by 0.766044 on both sides of the equation , we get

j = 3.0198972 x 0.766044

On further simplification , we get

j = 2.3 inches

Hence , the measure of j of triangle is 2.3 inches

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Answer:

Step-by-step explanation:

Let x be the number of miles you and your friend travel.We know that the cost of the bus ride is 60 cents per mile, so the total cost of the trip is 60 * x.This can be written as an equation as follows:Cost = 60 * xOr, more simply:Cost = 60xThis equation represents the relationship between the number of miles you and your friend travel and the cost of the trip. As the number of miles increases, the cost of the trip also increases at a rate of 60 cents per mile.