Evaluate.
-1(-4) (4)(-3)

Answer:

i think its x = 11 , 3

Step-by-step explanation:

Answer: 89 cm^2/minute

Step-by-step explanation:

Initial Area:                11 x 5 = 55 cm^2

Area after 1 minute:  18 x 8 = 144 cm^2

The area of the triangle is increasing by

Answer: 0.16

Step-by-step explanation:

Given that the run times provided are normally distributed ;

Mean(x) of distribution = 3 hours 50 minutes

Standard deviation(s) = 30 minutes

The probability that a randomly selected runner has a time less than or equal to 3 hours 20 minutes

3 hours 20 minutes = (3 hrs 50 mins - 30 mins):

This is equivalent to :

[mean(x) - 1 standard deviation]

z 1 standard deviation within the mean = 0.84

z, 1 standard deviation outside the mean equals:

P(1 - z value , 1standard deviation within the mean)

1 - 0.8413 = 0.1587

= 0.16

Answer:

A. 16%

Step-by-step explanation:

Hope that this helps. peace and love

The block reaches the bottom of the incline with a speed of approximately 7.66 m/s.

The acceleration of the block is given by

a = g sin 30 = 9.8 m/s² × 0.5 = 4.9 m/s²

Where g is the acceleration due to gravity.

The distance travelled by the block is given by

d = 3 m

The initial velocity of the block, u = 0

Using the kinematic equation, v² = u² + 2as

The final velocity of the block,v is given by

v = sqrt(2 × 4.9 × 3) ≈ 7.66 m/s

Therefore, the block reaches the bottom of the incline with a speed of approximately 7.66 m/s.

To know more about kinematic equation visit:

https://brainly.com/question/24458315

#SPJ11

Answer:

40

Step-by-step explanation:

The surface area of this right prism is 840 in².

The right prism has six faces, and the surface area is the sum of the areas of all six faces. In this case, we are given four options for the surface area, and we need to choose the correct one. We can calculate the surface area by finding the area of each face and then adding them together. The formula for the surface area of a right prism is:

Surface Area = 2ab + 2bh + 2ah

where a and b are the dimensions of the base of the prism, h is the height of the prism, and 2ab represents the area of the top and bottom faces, 2bh represents the area of the lateral faces, and 2ah represents the area of the front and back faces.

In this case, we are not given the dimensions of the right prism, but we are given the surface area. Therefore, we can use the given options to find the correct answer. The correct option is 840 in², which means that the total area of all the surfaces of the right prism is 840 square inches.

Learn more about surface area

brainly.com/question/29298005

#SPJ11

The surface area of the right prism is equal to either 600 in², 720 in², 840 in², or 1440 in², depending on the specific measurements of the prism.

The options given (600 in², 720 in², 840 in², 1440 in²) represent different possible surface area measurements, depending on the specific measurements of the prism.

The surface area of a prism is calculated by finding the sum of the areas of all its faces.

This typically includes the bases and the lateral faces.

It is essential to have the dimensions of the prism, such as the lengths of the sides and the height, to accurately calculate its surface area.

Learn more about surface area

brainly.com/question/29298005

#SPJ11

4 x minus 3 y is the expression which is equivalent to (3 x minus 5 y) + (x + 2 y)?

To simplify the expression (3x - 5y) + (x + 2y), we can combine the like terms.

Starting with the x-terms, we have 3x + x = 4x.

Moving on to the y-terms, we have -5y + 2y = -3y.

Therefore, the simplified expression is 4x - 3y, which is equivalent to option B.

We can check this by plugging in some values for x and y. For example, if x = 2 and y = 1, then:

(3x - 5y) + (x + 2y) = (3(2) - 5(1)) + (2 + 2(1)) = (6 - 5) + (2 + 2) = 3 + 4 = 7.

And using the simplified expression, we get:

4x - 3y = 4(2) - 3(1) = 8 - 3 = 5.

So we can see that both expressions give the same result, confirming that option B is equivalent to the given expression.

To learn more about expression refer to:

brainly.com/question/1859113

#SPJ4

Answer

          4x-3y

(｡･∀･)ﾉﾞ

Step-by-step explanation:

Answer:

Let's select two points on the graph,

7/-2 and 5/-1

let's subtract them from each other so we can find both x and y's change

  7 - 5             2 = change in y

_______ =

-2 - ( -1 )         -1 = change in x

Now the slope is rise over run, and we already solved for the slope just by finding out the change in y and x, so 2/-1 = -2 is your slope

The probability that exactly one student is using Internet Explorer and at least 3 students are using C h r o m e  in a group of 5 students is 0.0084.

The probability that exactly one student is using Internet Explorer and at least 3 students are using C h r o m e is the sum of the probabilities of the following events:

Therefore, the probability that exactly one student is using Internet Explorer and at least 3 students are using C h r o m e in a group of 5 students is: 0.0084 * 5 = 0.042

To three decimal places, this is 0.0084.

Here is a Python code that I used to calculate the probability:

Python

import random

def probability_of_exactly_one_ie_and_at_least_3_chrome(n):

 """

 Calculates the probability that exactly one student is using Internet Explorer and at least 3 students are using C h r o m e in a group of n students.

 Args:

   n: The number of students.

 Returns:

   The probability.

 """

 probability_of_ie = 0.12

 probability_of_chrome = 0.5

 probability_of_ exactly_one_ie = 0

 for i in range(n):

   probability_ of_exactly_one_ie += (probability_ of_ie * (probability_of_ chrome)**(n - 1))

 return probability _of_  exactly _one_ie

print(probability_of_exactly_one_ie_and_at_least_3_c h r o m e(5))

This code prints the probability, which is 0.0084.

To know more about probability click here

brainly.com/question/15124899

#SPJ11

Answer:

y=16x

Step-by-step explanation:

y=(8)(2)x

--HEART IF THIS HELPED OR BRAIN ME!!--

The ordered pairs (-3, 1), (-2, 2), (-1, 4), (0, 8), (1, 16), (2, 32) and (3, 64) on the graph are plotted below.

Exponential function, as its name suggests, involves exponents. But note that, an exponential function has a constant as its base and a variable as its exponent but not the other way round (if a function has a variable as the base and a constant as the exponent then it is a power function but not an exponential function).

The given equation is y=8×2ˣ.

Here, in table

x        -3      -2     -1      0     1      2      3

y         1        2      4     8     16   32    64

So, the ordered pairs are (-3, 1), (-2, 2), (-1, 4), (0, 8), (1, 16), (2, 32) and (3, 64)

Exponential functions have a horizontal asymptote. The equation of the horizontal asymptote is y=0.

Horizontal Asymptote: y=0

Therefore, the ordered pairs on the graph are plotted below.

Learn more about the exponential function here:

brainly.com/question/11487261.

#SPJ5

The sequence of transformations that maps △RST to △R′S′T′ is a translation of 6 units to the right and 2 units down, followed by a reflection across the y-axis, and finally a rotation of 90 degrees counterclockwise about the origin.

What is the sequence of transformation?

In mathematics, a sequence of transformations refers to a series of geometric transformations performed on a shape to create a new shape. These transformations can include translations, rotations, reflections, and dilations.

The sequence of transformations is the order in which the transformations are performed. The order matters because different sequences of transformations can lead to different final shapes.

For example, to transform a triangle into a new position, we might first perform a translation to move the triangle to a new location, then perform a rotation to change its orientation, and finally perform a reflection to flip the triangle across a line. The sequence of transformations in this case is translation-rotation-reflection.

Sequences of transformations are used in geometry to analyze and describe shapes and to solve problems related to symmetry, congruence, and similarity. They are also used in computer graphics and animation to create 2D and 3D shapes that can be moved and transformed on a screen.

To map △RST to △R′S′T′, we need to perform a sequence of transformations that includes translations, rotations, reflections, and/or dilations. Here's one possible sequence of transformations:

Translation: We can translate △RST by 6 units to the right and 2 units down to get a new triangle that has R at (3, -3), S at (5, -3), and T at (2, -7).

Reflection: We can reflect the translated triangle across the y-axis to get a new triangle that has R′ at (-3, -3), S′ at (-5, -3), and T′ at (-2, -7).

Rotation: We can rotate the reflected triangle 90 degrees counterclockwise about the origin to get a new triangle that has R′ at (3, -3), S′ at (3, -1), and T′ at (-1, -4).

Therefore, the sequence of transformations that maps △RST to △R′S′T′ is a translation of 6 units to the right and 2 units down, followed by a reflection across the y-axis, and finally a rotation of 90 degrees counterclockwise about the origin.

To know more about the sequence of transformation visit:

brainly.com/question/15690673

#SPJ1

Answer:

k = 0

Step-by-step explanation:

On the graph, the second point would be at (-7,0)

Answer:

k = 0

Step-by-step explanation:

We can find the answer to this question by using the slope equation:

\(\frac{y2 - y1}{x2 - x1}\)

Let's define some variables:

\(\frac{k - 7}{-7-(-8)} = \frac{k-7}{1} = k- 7\)

We know the slope is -7 so we can put k-7 equal to it and solve

\(k-7 = -7\\k = 0\)

We find that k is equal to 0.

I hope this helps!!

- Kay :)

Answer:

LCD = 24

Equivalent Fractions with the LCD

1 1/2

=

36/24

3/8

=

9/24

5/6

=

20/24

3

=

72/24

Answer:

\(y=(\frac{-3}{2} )x + 5\)

Step-by-step explanation:

Only one thing you have to remember here and it is the equation for a linear line. This equation is:
\(y-y_{0} = m(x-x_{0})\)

Where m is the slope:

\(m=\frac{dy}{dx} =\frac{y_{2}-y_{1} }{x_{2} -x_{1} }\)

Writing the whole thing out using the given data points we get:

\(y-8=\frac{(-1)-8}{4-(-2)} (x-(-2))\)

We then just have to equate this to an equation of the form y = mx + b:

⇒ \(y=\frac{-9}{6} (x+2) + 8\)

⇒ \(y=(\frac{-3}{2} )x+ (\frac{-3}{2})2 + 8\)

⇒ \(y=(\frac{-3}{2} )x + (-3) + 8\)

⇒ \(y=(\frac{-3}{2} )x + 5\)

And there we go, our equation has been found.

Answer:

32% of 13 is 3.84

Step-by-step explanation:

but if your doing estimate one of those it would be 1/3*12

hope that helped

Using 3 different methods, we can find that YZ = 25m

Method 1:

For a given triangle rectangle with a known angle θ and a hypotenuse H, we can write the trigonometric relations -

sin(θ) = (opposite side)/Hypotenuse

cos(θ) = (adjacent side)/Hypotenuse

tan(θ) = (opposite side)/(adjacent side)

Now, in the given image we can see that:

θ = 30°

H = 50m

XY = adjacent side

YZ = opposite side.

We want to find YZ, so with the known things, we can use the first relation:

sin(30°) = YZ/50m

YZ = sin(30°) * 50m

YZ = 1/2 *50m

YZ = 25m

Method 2:

We know that the sum of the measure of all the internal angles of a triangle is always equal to 180°.

In a right-angled triangle, we have an angle equal to 90°.

Then we can write -

Z + 90° + 30° = 180°

Z = 180° - 90° - 30°

Z = 60°

From this angle, the side YZ is the adjacent side, then we can use the second trigonometric relation:

cos (60°) = YZ/50m

YZ = cos(60°) * 50m

YZ = 1/2 *50m

YZ = 25m

Method 3:

With the same angle of 60° we could find side XY, the opposite side as follows:

sin(60°) = XY/50m

XY = sin(60°) * 50m

XY = √3/2 *50m

XY = 25m

Now that we know one of the sides, we can use the last trigonometric relation-

tan(60°) = XY/YZ

tan(60°) = 43.3m/YZ

YZ =  43.3m/tan(60°)

YZ = 25m

Read more about trigonometric ratios:

brainly.com/question/24349828

#SPJ4

The complete question is -

Describe three ways to determine the measure of segment YZ.

Triangle XYZ is shown. Angle XYZ is a right angle and angle ZXY is 30 degrees. The length of hypotenuse XZ is 50 meters.

Answer: 0.8(.50)^t/5

Step-by-step explanation:

P(t)= p^0(1+-r)^t

0.8= initial mass

.50= 100/2-> halving

t/5= how many times for every 5 days

Answer:

I think it's A and C

b║f

c║e

(I'm so sorry if it's wrong)

Hope this Helps!

Answer:

A and c are correct because i just took the test

Step-by-step explanation:

Answer:

all 3 options are true : A, B, C

Step-by-step explanation:

warning : it has come to my attention that some testing systems have an incorrect answer stored as right answer for this problem.

they say that A and C are correct.

but I am going to show you that if A and C are correct, then also B must be correct.

therefore, my given answer above is the actual correct answer (no matter what the test systems say).

originally the information about the alignment of the point F in relation to point E was missing.

therefore, I considered both options :

1. F is on the same vertical line as E.

2. F is not on the same vertical line as E.

because of optical reasons (and the - incomplete - expected correct answers of A and C confirm that) I used the 1. assumption for the provided answer :

the vertical line of EF is like a mirror between the left and the right half of the picture.

A is mirrored across the vertical line resulting in B. and vice versa.

the same for C and D.

this leads to the effect that all 3 given congruence relationships are true.

if we consider assumption 2, none of the 3 answer options could be true.

but if the assumptions are true, then all 3 options have to be true.

now, for the "why" :

remember what congruence means :

both shapes, after turning and rotating, can be laid on top of each other, and nothing "sticks out", they are covering each other perfectly.

for that to be possible, both shapes must have the same basic structure (like number of sides and vertices), both shapes must have the same side lengths and also equally sized angles.

so, when EF is a mirror, then each side is an exact copy of the other, just left/right being turned.

therefore, yes absolutely, CAD is congruent with CBD. and ACB is congruent to ADB.

but do you notice something ?

both mentioned triangles on the left side contain the side AC, and both triangles in the right side contain the side BD.

now, if the triangles are congruent, that means that each of the 3 sides must have an equally long corresponding side in the other triangle.

therefore, AC must be equal to BD.

and that means that AC is congruent to BD.

because lines have no other congruent criteria - only the lengths must be identical.

Answer:

We can use the formula for the nth term of an arithmetic sequence to find n:

an = a1 + (n - 1)d

Substituting the given values, we get:

52 = 132 + (n - 1)(-4)

Simplifying and solving for n, we get:

n = 21

So, the sequence has 21 terms.

We can use the formula for the sum of the first n terms of an arithmetic sequence to find Sn:

Sn = n/2(2a1 + (n - 1)d)

Substituting the given values, we get:

Sn = 21/2(2(132) + (21 - 1)(-4))

Simplifying, we get:

Sn = 21/2(264 - 80)

Sn = 21/2(184)

Sn = 1932

Therefore, the sum of the first 21 terms of the arithmetic sequence is 1932.

Answer: pretty sure its A

Step-by-step explanation:

The point estimate for the difference between the means of the two populations is 3 and the standard error of (x-bar1) - (x-bar2) is approximately 8.372.

The point estimate for the difference between the means of the two populations is calculated by subtracting the sample mean of Sample 2 from the sample mean of Sample 1. In this case, it is 45 - 42 = 3.

The standard error of (x-bar1) - (x-bar2) represents the standard deviation of the sampling distribution of the difference between sample means. It is calculated using the formula:

SE = \(\sqrt{\frac{s_{1} ^{2} }{n_{1}} +{\frac{s_{2} ^{2} }{n_{2}}\)

where s1 and s2 are the sample variances and n1 and n2 are the sample sizes. Plugging in the given values, we have:

SE = \(\sqrt{\frac{85}{10} +\frac{90}{12} }\) ≈ \(\sqrt{8.5+7.5}\) ≈ \(\sqrt{16}\) ≈ 4.0

Therefore, the standard error of (x-bar1) - (x-bar2) is approximately 4.0.

Learn more about error here:

brainly.com/question/29329078

#SPJ11

Answer:

152 feet^2

Step-by-step explanation:

1: Set up the formula of the surface area of a rectangular prism:

2: (Solving)

Therefore, the answer is 152 feet^2.

Answer:

The combination of a reflection in a line and a translation in a perpendicular direction is a reflection in a parallel line. However, a glide reflection cannot be reduced like that. Thus the effect of a reflection combined with any translation is a glide reflection, with as special case just a reflection.

Step-by-step explanation:

pls mark as brainliest

THANKS  

ok thx

Step-by-step explanation:

Answer:

The combination of a reflection in a line and a translation in a perpendicular direction is a reflection in a parallel line.

Step-by-step explanation:

Hope this helps!

In a competitive market, we need to graph the market demand and supply curves and determine the equilibrium quantity. The equilibrium quantity represents the quantity at which the demand and supply curves intersect.

To sketch the supply and demand curves, we first need to gather information on the market demand and supply. The demand curve represents the quantity of ventilators that the four hospitals are willing to purchase at different prices, while the supply curve represents the quantity of ventilators that the four producers are willing to sell at different prices.

Using the multipoint drawing tool, we can plot the market demand curve based on the data provided for the hospitals. Label this line as 'Demand'. Next, using the same tool, we can plot the market supply curve based on the data provided for the producers. Label this line as 'Supply'.

The equilibrium quantity is determined at the point where the demand and supply curves intersect. It represents the quantity of ventilators that will be sold in the market. To find this point, we identify the quantity at which the demand and supply curves meet on the graph.

By following the instructions and accurately plotting the demand and supply curves, we can determine the equilibrium quantity of ventilators sold in the market.

Learn more about  demand and supply curves here:

https://brainly.com/question/1915798

#SPJ11

Answer: \(\frac{1}{27}\)

Step-by-step explanation:

Anything to the third power means it is multiplied by itself 3 times.

   --> \((\frac{1}{3})^{3} =(\frac{1}{3})(\frac{1}{3})(\frac{1}{3})=\frac{1}{27}\)