The time between a flash of lightning and the sound of its thunder can be used to estimate the distance from a lightning strike . The distance from the strike is the number of seconds between seeing the flash and hearing the thunder divided by 5 . Suppose you are 5 miles from a lightning strike . How many seconds are between the flash and thunder ?

Answer:

c

Step-by-step explanation:

reflection is like in a mirror and that is the same shape, just flipped. The x-axis is the horizontal line and that is the line the shape is flipped over so the answer is c. :)

Answer:

Slope intercept

Answer: a. 24

Step-by-step explanation:

We will simplify using PEMDAS.

Given:

(5 + 7)2

Add:

(12)2

Multiply:

24

              a. 24

Hello!

\((5+7)2\)

\(5+7=12\\12*2=24\)

Your answer would be A. 24

Hope this helps!

Answer:

∠3=60°

Step-by-step explanation:

IS THIS YOUR i-Ready DIAGNOSTIC!!!

55+5=60

∠1=∠3 because they are across from each other

if ∠1=60, so does ∠3

Answer: 60

Step-by-step explanation:

When the line y rotated clockwise 5° which means right shift of the line y to the 5° makes the ∠1  60°      

∠1 =∠3 ( Vertically opposite angles)

∠3= 60°

Answer:24.66 inches.

Step-by-step explanation:

Let's start by using algebra to set up a system of equations to represent the given information.

Let L be the length of the rectangle and W be the width of the rectangle.

From the problem, we know that:

The perimeter of the rectangle is 78 inches, which means that 2L + 2W = 78.

The width is 4 less than twice the length, which means that W = 2L - 4.

We can use the second equation to substitute W in terms of L in the first equation, and solve for L:

2L + 2(2L - 4) = 78

2L + 4L - 8 = 78

6L = 86

L = 14.33 (rounded to 2 decimal places)

Now that we know the length, we can use the second equation to find the width:

W = 2L - 4 = 2(14.33) - 4 = 24.66 (rounded to two decimal places)

Therefore, the width of the rectangle is approximately 24.66 inches.

Answer: I’d the circumference is 6 it would be 6 x 3.14

Step-by-step explanation:

Explanation:

The data from the stem-and-leaf plot is:

10,

24,25,26,

30,30,32,33,

40,45,46

Add up those values

10+24+25+26+30+30+32+33+40+45+46 = 341

Then divide over n = 11 which is the sample size.

341/11 = 31 is the arithmetic mean.

Answer:

341/11 = 31 is the arithmetic mean.

Step-by-step explanation:

step explanation: it helped me with a lot of assignments.

Answer:

28+x

Step-by-step explanation:

6+6=12

8+8=16

12+16= 28

Answer:

angle1 = 161,

angle2 = 19

Step-by-step explanation:

angle 1 + angle 2=180

7x+x-4=180

8x-4=180

8x=184

x=23

angle1 = 7x = 7*23 = 161

angle2 = x-4 = 19

Answer:

Sure, I'll explain the cosine rule and sine rule in simple terms:

The cosine rule (also known as the law of cosines) is used to find the length of a side or the measure of an angle in a triangle given the lengths of the other sides and the angle between those sides. It states that c^2 = a^2 + b^2 - 2ab cos(C), where c is the length of the side opposite angle C, and a and b are the lengths of the other two sides.

Here's an example of how to use the cosine

Suppose we have a triangle with sides a=6, b=8, and an angle between them c=45 degrees. We want to find the length of the remaining side of the triangle, side a.

Using the cosine rule:

a^2 = b^2 + c^2 - 2bc * cosA

where A is the angle opposite side a, we can plug in our values and solve for a:

a^2 = 8^2 + 6^2 - 2(8)(6) * cos(45)

a^2 = 64 + 36 - 96 * 0.707

a^2 = 10.56

a = sqrt(10.56)

a = 3.25 (rounded to two decimal places)

Therefore, the length of side a is approximately 3.25 units.

Answer:

Step-by-step explanation:

Answer:

A function is a mathematical relation in which each input (domain value) is associated with exactly one output (range value). In other words, for a relation to be a function, each input can have only one corresponding output. Let's analyze the given pairings:

(a person’s age in years, that same person’s height in inches) - This can be a function because one person's age in years should correspond to a single height in inches.

(a person’s weight in pounds, that same person’s height in inches) - This can also be a function because one person's weight in pounds should correspond to a single height in inches.

(a person’s height in centimeters, that same person’s height in inches) - This can be a function because one person's height in centimeters should correspond to a single height in inches.

(a person’s telephone number, that same person’s height in inches) - This may not necessarily be a function. It's possible for two different people to have the same height in inches but different telephone numbers.

So, the pairings that always describe a function are:

(a person’s age in years, that same person’s height in inches)

(a person’s weight in pounds, that same person’s height in inches)

(a person’s height in centimeters, that same person’s height in inches)

These three pairings meet the criteria of a function, where each input corresponds to a unique output.

The pairing that always describes a function is option C. (a person’s height in centimeters, that same person’s height in inches)

A pairing describes a function when each unique input (domain element) is associated with exactly one unique output (range element). In other words, there should be no ambiguity or multiple outputs for a single input. Let's analyze the given pairings:

1. (a person’s age in years, that same person’s height in inches): This pairing may not always describe a function because multiple people can have the same age, but they might have different heights. So, there can be multiple outputs for the same input (age).

2. (a person’s weight in pounds, that same person’s height in inches): Similar to the first pairing, this may not always describe a function because different people can have the same weight but different heights.

3. (a person’s height in centimeters, that same person’s height in inches): This pairing describes a function because for each unique height in centimeters, there is only one corresponding height in inches.

4. (a person’s telephone number, that same person’s height in inches): This pairing may not always describe a function because multiple people can have the same telephone number, but they might have different heights. So, there can be multiple outputs for the same input (telephone number).

So, the pairing that always describes a function is: (a person’s height in centimeters, that same person’s height in inches)

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Answer:a

Step-by-step explanation:

The solution to the equation ax² + bx + c = 0 , has a graph that crosses the y-axis once and does not intersect the x-axis, then the equation has one real root and two complex conjugate roots that lie on either side of the axis of symmetry.

A quadratic equation is a second-order polynomial equation in a single variable x , ax² + bx + c=0. with a ≠ 0. Because it is a second-order polynomial equation, the fundamental theorem of algebra guarantees that it has at least one solution. The solution may be real or complex.

The roots of the quadratic equations are

x = [ -b ± √ ( b² - 4ac ) ] / ( 2a )

where ( b² - 4ac ) is the discriminant

when ( b² - 4ac ) is positive, we get two real solutions

when discriminant is zero we get just one real solution (both answers are the same)

when discriminant is negative we get a pair of complex solutions

Given data ,

Let the quadratic equation be represented as A

Now , the value of A is

If the graph of the equation ax² + bx + c = 0 crosses the y-axis once, it means that the equation has one real root. This is because when x = 0, the equation becomes:

c = 0² + 0 + c = c

Therefore, the point (0, c) is on the y-axis, which means the graph crosses the y-axis once.

If the graph does not intersect the x-axis, it means that the discriminant b² - 4ac is negative. This is because the discriminant determines the nature of the roots of a quadratic equation, and when it is negative, the roots are complex (not real) and the graph does not intersect the x-axis.

So, the solution(s) of the equation ax² + bx + c = 0 are:

x = (-b ± √(b² - 4ac)) / 2a

Since the discriminant is negative, the term inside the square root is negative, and there are no real solutions for x. Instead, the solutions are complex conjugates of the form:

x = (-b ± i√(4ac - b²)) / 2a

where i is the imaginary unit. Since the real part of these solutions is -b/2a, which is the axis of symmetry of the parabola, and the parabola does not intersect the x-axis, the complex roots will be a conjugate pair that lie on either side of the axis of symmetry.

Hence , the quadratic equation is solved

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Answer:305

Step-by-step explanation:

(2/9)*450=100

(1/10)*450=45

100+45=145

450-145=305

Answer:

Step-by-step explanation:

Rise over run is the slope, m

m=2/5

a)  the slope is 2/5 = .4 which is below the boundary guideline.  So no this is not with in carpenter's guidelines

b) the image below show a line with slope 2/5 but with intercept 3

c) the stairs can be draw on the line with rise 2 run 5   from the line.  see image

d)equation is in image

2.

a) count the squares

horizontal distance =3

vertical distance =3

b)  slope is vertical distance over horizontal distance  so m= 3/3 =1

Answer:

y-intercept

Step-by-step explanation:

In all cases, when x = 0, f(0) = a or b or c.

Answer: y-intercept

Based on the given probability of 2/20 (0.1), the likelihood of selecting a black pen from Mrs. Galvan's drawer of 20 pens is best described as:

A. unlikely

Since there are only 2 black pens out of 20 total pens, the probability of randomly selecting a black pen is fairly low at 0.1 or 10%. Events with probabilities less than 0.5 (50%) are generally considered unlikely. Having only a 1 in 10 chance of an outcome makes that outcome unlikely.

B. likely

This option is incorrect. With a probability of 0.1 or 10%, selecting a black pen is unlikely, not likely. An outcome is considered likely if it has a probability of greater than 0.5 (50%).

C. neither unlikely nor likely

This option is also incorrect. While probabilities close to 0.5 could be described as neither unlikely nor likely, a probability of 0.1 is clearly on the unlikely side. Events with probabilities less than 0.5 are classified as unlikely.

In summary, given that there is only a 10% chance (2 out of 20) of randomly selecting a black pen from Mrs. Galvan's drawer, the likelihood of this outcome is best described as unlikely rather than likely or neither unlikely nor likely. A probability of 0.1 is well below the 0.5 threshold that would make an outcome considered likely. Therefore, the answer is A: unlikely.

Hope this explanation has helped clarify why A is the best choice! Let me know if you have any other questions.

Answer:

A. Unlikely

Step-by-step explanation:

Getting a black pen is lesser than the 50%, which is 10/20. Not more nor equal, so the answer is A, unlikely.

Here are the pairs matched with their products:

- (-5)(4.2) matches with -21

- (-7)(-3) matches with 21

- (2.5)(-9) matches with -22.5

Pairs (4) and (5) do not have corresponding products in the given options.

Answer:

400 mins.

Step-by-step explanation:

Answer:

2/9

Step-by-step explanation:

1/4 divided by 1 1/8.

First rewrite 1 1/8 as an improper fraction.

You now have 1/4 divided by 9/8.

When dividing by a fraction you multiply by the reciprocal.

You now have 1/4 * 8/9.

Now Multiply the numerators across and the denominators across to get 8/36.

Simplify the fraction. 2/9

Answer:

The answer is b. 72.24

Step-by-step explanation:

86-20%= 68.80

68.80+5%=72.24

Percent is given by :

\(Total .\frac{Percent}{100} = equivalent number to percent\\ 86.\frac{20}{100} =17.2\\86-17.2=68.8\\86.\frac{5}{100} =4.3\)

Total sale will cost 68.8+4.3=73.1 usd

The answer is A

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Answer: C

Step-by-step explanation:

The area of a triangle can be calculated using the formula:

Area = (base x height)/2

Plugging in the given values, we get:

Area = (9 x 19)/2

Area = 171/2

Area = 85.5 square inches

Therefore, the area of the pennant is 85.5 square inches, which corresponds to option C.

Answer:

Step-by-step explanation:

234 is the answer

The total area to be painted is 8,316 square inches.

The bench has a rectangular base with dimensions 63 in by 14 in. The height of the bench is 54 in. The two faces that rest on the ground do not need to be coated with paint, so the total area to be coated is the sum of the areas of the four remaining faces.

The area of one of the longer faces is:

63 in × 54 in = 3,402 in²

The area of the other longer face is the same, so the total area of the longer faces is:

2 × 3,402 in² = 6,804 in²

The area of one of the shorter faces is:

14 in × 54 in = 756 in²

The area of the other shorter face is the same, so the total area of the shorter faces is:

2 × 756 in² = 1,512 in²

The total area to be coated with paint is the sum of the areas of the four remaining faces:

6,804 in² + 1,512 in² = 8,316 in²

Therefore, the total area to be coated with paint is 8,316 square inches.

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Answer: A

Step-by-step explanation:

Answer:

The light blue line is Diego and the dark line is Noah

Step-by-step explanation:

Answer: Blue line is Diego and the Black line is Noah

Answer:

6 miles

Step-by-step explanation:

A mile is 1760 yards; and hour is 3600 (=2x1800) seconds.

So a yard per second is roughly two miles per hour (actually 1800/1760 x2 miles per hour, so the error is about 40 in 1800 or less than 1 in 40, 2.5%) and three yards per second is about 6 miles per hour. Upper bound of the estimate would be 6 + 2.5% = 6+0.15 = 6.15 mph.

Answer: all her answers

Step-by-step explanation: look  at each place of the eqution or maybe calcultaor i couldnt really see the page you needed help with

Answer:

Step-by-step explanation:

Sindy paid $5.44 in sales tax, and her total price was $73.44.

Sales Tax:  68 x .08= 5.44

Final Price:  68 + 5.44= 73.44

Answer:

To find sales tax, you need to find the percent of;

$68.00 * 8%

$68.00 * 0.08

= $5.44

$5.44 is the sales tax

Add the sales tax to the original amount:

$68.00 + $5.44 = $73.44

So the final price including tax is equal to $73.44.