how many lines of symmetry does a star have?

Answer:

Explanation:

To estimate the value, you can work with friendly numbers: numbers closed to the given numbers and with which you can perform easy mental calculations.

For example 4.55 may be rouned to 5, 4.85 may be rounded to 5, and 3.25 may be rounded to 3. That yields 5 + 5 + 3 = 13

Then, it seems you have about 13 liters. Is the final number equal or greater than 12 for sure?

To round 4.55 to 5 you increased the amount in 0.45, to round 4.85 to 5 you increased the amount by 0.15, and to round 3.25 to 3 you decreased the amount in 0.25.

What was the net change in your values: 0.45 + 0.15 - 0.25 = 0.60 - 0.25 = 0.35. Those are easy calculations that you can perform in your mind.

That means that you increased your total in less than 1 liter. Meaning that the final total is overestimated by 0.35, and that if you used the real amounts to make the calculations, the total will be still more than 12.

Answer:

a. (-3, 2).

b.  √65

c.  (x + 3)^2 + (y - 2)^2 = 65

Step-by-step explanation:

a.  The center is the midpoint  of the diameter PQ.

= (-10+4)/2, (-2+6)/2

= (-3, 2).

b. The radius is the distance from the center to a point on the circle.

Take the point (4, 6):

The radius = √((-3-4)^2 + (2-6)^2)

= √65.

c.  The equation of the circle is:

Using the standard form

(x - h)^2 + (y - k)^2 = r^2  where  (h, k) is the center and r = the radius:

it is (x - (-3)^2 + (y - 2) = 65

= (x + 3)^2 + (y - 2)^2 = 65.

Answer:

a. (-3,2)

b. sqrt(65)

c. (x + 3)² + (y - 2)² = 65

Step-by-step explanation:

Centre:

midpoint of the diameter

(h,k) = (-10+4)/2, (-2+6)/2

(h,k) = (-3,2)

Length of the diameter:

sqrt[(-2-6)² + (-10-4)²]

sqrt(260)

2sqrt(65)

Radius: ½ × diameter

Radius = sqrt(65)

Equation:

(x - h)² + (y - k)² = r²

(x - -3)² + (y - 2)² = (sqrt(65))²

(x + 3)² + (y - 2)² = 65

Answer:

34

Step-by-step explanation:

The average rate of change of f(x) in the closed interval [ a, b ] is

[tex]\frac{f(b)-f(a)}{b-a}[/tex]

Here [ a, b ] = [ 1, 6 ]

f(b) = f(6) = 6³ - 9(6) = 216 - 54 = 162

f(a) = f(1) = 1³ - 9(1) = 1 - 9 = - 8, thus

average rate of change = [tex]\frac{162-(-8)}{6-1}[/tex] = [tex]\frac{170}{5}[/tex] = 34

Final answer:

The average rate of change of the function f(x) = x^3 - 9x over the interval (1,6] is 34.

Explanation:

The average rate of change of a function f(x) over an interval is calculated by taking the difference in the function values at the end points of the interval divided by the length of the interval. For the function f(x)=x^3-9x over the interval (1,6], we calculate the function values at x=1 and x=6, then find the difference, and divide by the interval length, which is 6-1=5. So f(1)=1^3-9(1)=-8 and f(6)=6^3-9(6)=216-54=162. Therefore, the average rate of change is (162-(-8))/5 = 170/5 = 34.

Answer:

There is 2600 combinations possible.

Step-by-step explanation:

The combinations for the first lock has 10 combinations

The combinations for the second lock has 10 combinations

The combinations for the third lock has 26 combinations

The total combinations is the product of all the locks.

There is 2600 combinations possible.

Answer:

could you explain more?

Answer:

should be 24

Step-by-step explanation:

x+3=27

  -3   -3       take away 3 on both sides to leave the variable by itself

x = 24

Final answer:

To find the acceleration, we subtract the initial velocity from the final velocity and then divide by the time. For the given values, this results in an acceleration of 0.833 m/s² for the walker.

Explanation:

The student has asked about the acceleration of a person who starts at 0 m/s and reaches 5 m/s in 6 seconds. To find acceleration, we use the formula:

acceleration = (final velocity - initial velocity) / time

Inserting the given values:

acceleration = (5 m/s - 0 m/s) / 6 s = 5/6 m/s²

Therefore, the acceleration of the walker is 0.833 m/s².

The greatest number of crates that a crane with a breaking strain of 6400 kg can safely lift at one time (with the crate weight marked to the nearest 90 kg) is 71 crates.

In this problem, we need to determine the maximum number of crates a crane can lift without breaking its cable. The breaking strain of the cable can be interpreted as the maximum weight, or load, the cable can safely support. This is given as 6400 kg. Each crate the crane is lifting is said to weigh 90 kg.

To find the maximum number of crates that can be safely lifted, we divide the breaking strain (the total load the cable can bear) by the weight of each individual crate. Therefore:

6400 kg (total load) / 90 kg (load per crate) = 71 crates

However, since we can't lift fractions of a crate, we should round down to the nearest whole number, which gives us a maximum of 71 crates that can be lifted safely without the cable breaking.

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To find the maximum number of crates that can be lifted without exceeding the cable's breaking strain of 6400 kg, divide the breaking strain by the weight of one crate (90 kg) and round down to the nearest whole number, which results in 71 crates.

To determine the greatest number of crates that a crane cable with a breaking strain of 6400 kg can lift at one time, you perform a simple division. The weight of each crate is given as 90 kg (measured to the nearest 10 kg).

To ensure safety, you take the total breaking strain of the cable and divide it by the weight of one crate:

Breaking strain of cable = 6400 kg

Number of crates = Breaking strain of cable / Weight of one crate

Number of crates = 6400 kg / 90 kg/crate

Number of crates = 71.111...

Since you cannot lift a fraction of a crate, round down to the nearest whole number.

The greatest number of crates that can be lifted without breaking the cable is 71 crates.

Answer:

A

Step-by-step explanation:

Basically, the definition of a function is a relation on a graph where no two y values have the same x value. This means that a and b are the only options now.

Since the graph is broken up into points, not one line, the range and domain cannot be intervals. So the only logical answer is a

Thank me later :)

Answer:

hope this helps you to understand

Answer:

4

Step-by-step explanation:

do the math plug it in

4 + 6 = 10,

10 x 2 = 20

20/5 = 4

The value of the smaller number is 4.

An expression contains one or more terms with addition, subtraction, multiplication, and division.

We always combine the like terms in an expression when we simplify.

We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.

Example:

1 + 3x + 4y = 7 is an expression.com

3 + 4 is an expression.

2 x 4 + 6 x 7 – 9 is an expression.

33 + 77 – 88 is an expression.

We have,

Let's start by translating the given information into equations.

We can use variables to represent the two numbers, and use the given information to write equations in terms of those variables.

Let x be the smaller number.

Then the larger number is 6 more than x, which we can write as (x + 6).

Twice the larger number is 5 times the smaller, which we can write as:

2(x + 6) = 5x

Now we can solve for x:

2x + 12 = 5x

Subtracting 2x from both sides, we get:

12 = 3x

Dividing both sides by 3, we get:

x = 4

Therefore,

The smaller number is 4.

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Answer:

A = {KL}

Step-by-step explanation:

Since we have given that

There are three person : Joe, Keitaro, Luis.

And two names will be selected for he game .

Possible events will be

But we want to find the complement of the event in which Joe plays in hte first match,

As we know that complement of any events means eliminate that event from the universal set.

Event of getting Joe plays in the first match is given by

So, complement of this event that Joe plays in the first match is given by

The possible events are:

{JK, JL, KL}

The events where J does not play (the first game) are: {KL}

Answer: A = {KL}

The complement of the event in which Joe plays in the first match is {KL} and the subset of the sample space is {JK, JL, KL}

Complementary events are two events that exist such that one event will occur if and only if the other does not take place.

Given that, Joe, Keitaro, and Luis play tennis. To decide who will play against each other in the first match, they put their names in a hat and choose two names without looking.

There are three persons: Joe, Keitaro, Luis.

There are two names to be selected for the game.

Possible events will be = {JK, JL, KL}

But we want to find the complement of the event in which Joe plays in the first match,

As we know that complement of any events means to eliminate that event from the universal set.

Event of getting Joe plays in the first match is given by = {JK, JL}

So, the complement of this event that Joe plays in the first match is given by = {KL}

Hence, the complement of the event in which Joe plays in the first match is {KL} and the subset of the sample space is {JK, JL, KL}

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Answer:

B=7x

Step-by-step explanation:

5(x+2)+2(x-5)

5x+10+2x-10

since 10-10=0, it just won't show, there's no need to say "0"

5x+2x+10-10

7x+0

so just

7x

Answer:7x

Step-by-step explanation:

5 times x 5 times 2 = 5x + 10

2 times x 2 times -5 = 2x -10

5x +2x = 7x

10- 10= 0

Hope this will help u....:)

Answer:

73.025

Step-by-step explanation:

i just looked it up if this helps give me brainliest plz (it'll be my first)

Jillian has 73.025 centimeters of ribbon.

It is the conversion of one unit to another unit with its standard conversion.

Examples:

1 hour = 60 minutes

1 minute = 60 seconds

1 km = 1000 m

We have,

To convert inches to centimeters, we can multiply the length in inches by 2.54, since 1 inch is equivalent to 2.54 centimeters.

So, to find the length of the ribbon in centimeters, we can multiply 28.75 inches by 2.54 centimeters/inch:

= 28.75 inches x 2.54 centimeters/inch

= 73.025 centimeters

Therefore,
Jillian has 73.025 centimeters of ribbon.

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Answer:

5.44x 10^4

Step-by-step explanation:

hello :

2.12 x 10^4 + 3.24 x 10^4 = (2.2+3.24)10^4 = 5.44x 10^4

Answer:

1.75 or 1 3/4

Step-by-step explanation:

Answer:

1 3/4

Step-by-step explanation:

Find a common denominator for both fractions

9 1/12 - 7 4/12 = 1 9/12 = 1 3/4

Answer:

Step-by-step explanation:

175 minutes

Unit cost =  

cost

number of minutes

$3.50

175

= 2¢;  

$7.00

200

= 3.5¢;  

$21.25

425

= 5¢;  

$38.15

545

= 7¢;  

$37.50

625

= 6¢

Answer:

10

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

I used the the distance formula.

Answer: 6.824%

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The rate of interest is 4% and this can be determined by using the formula of simple interest.

Given :

The formula of simple interest can be used in order to determine the rate of interest. The formula of simple interest is given by:

A = P(1 + rt)

where A is the final amount, r is the rate of interest, t is the time period in year and P is the principal amount.

Now, substitute the values of all the known terms in the above formula.

2295 = 2250(1 + 0.5r)

Simplify the above expression in order to determine the value of 'r'.

2295 = 2250 + 1125r

45 = 1125r

r = 0.04

r = 4%

The rate of interest is 4% and this can be determined by using the formula of simple interest.

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Answer:

Minimum : 1

Q1 : 8

median or Q2 : 13

Q3 : 20

Maximum : 23

Step-by-step explanation:

Q1 = lower quartile

Q2 = median

Q3 = upper quartile

1 5 8 10 11 12 14 17 19 20 22 23

median or Q2 = 12 + 14 = 26 divided 2 = 13

median = 13

Q1 = 8

Q3 = 20

minimum ( least number) = 1

Maximum ( Greater number ) = 23

Final answer:

The answer explains the statistical measures of minimum, quartiles, and maximum for a given set of numbers in Mathematics at a High School level.

Explanation:

The given numbers are:

Minimum: 1

Q1: 8

Q2: 17

Q3: 20

Maximum: 23

This data represents statistical measures such as minimum, quartiles, and maximum which are essential in data analysis and interpretation in Mathematics at a High School level.

Answer:

6 x 4

24 ÷ 6

Step-by-step explanation:

6 x 4 – There are 6 boxes with 4 stars in each box. When something looks like this, it mean multiplication.

24 ÷ 6  – There are 24 stars in total. Those 24 stars are being divided by 6 boxes. In the end there are 4 stars in each box.    (So basically, 24 ÷ 6 = 4)

Answer:

hope this helps you to understand

For 96 minutes the candles were burning if two candles of equal height start to burn simultaneously.  

It is defined as the change in values of a dependent variable with respect to the independent variables.

W have:

Rate of burning for thicker = h/4

Rate of burning for thinner= h/2

remaining part = h - ht/4

remaining part = h - ht/2

h - ht/4 = 3(h - ht/2)

After solving for t:

t = 8/5 hours

or

t = 96 minutes

Thus, for 96 minutes the candles were burning if two candles of equal height start to burn simultaneously.  

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Answer:

a = 9

b = 19

Step-by-step explanation:

DO B FIRST

The mean is the average of all the terms (numbers) in the sequence

To find the average you find the sum of the terms and divided the sum by the number of terms there are.

The mean times the number of terms equals the sum of all the terms subtract the terms that you know from the sum to get A

a = 17(10)-7-12-15-17-19-20-22-24-25

a = 170-161

a = 9

The median is found by taking the average of the two middle terms

Our middle terms are 17 and B

the median times 2 equals the sum of the two terms and then subtract the term you know from the sum

b = 18(2)-17

b = 36-17

b = 19

Answer:

<2, <3, <6, <7

Step-by-step explanation:

Interior angles are just angles between two transversals(p and q).

Answer:

B, 36 cubic feet

Step-by-step explanation:

The volume of a rectangular prism can be found by multiplying together all of the side lengths. 6*2*3=36 cubic feet, or option B. Hope this helps!

Volume of a rectangle [ V = h * l * w ]

V = 6 * 2 * 3

V = 12 * 3

V = 36

Therefore, the answer is B. 36 cubic feet

Best of Luck!

Hey there!

1/7 ÷ 2

= 1/7 ÷ 2/1

1/7 ÷ 2/1

Revert 2/1 to 1/2

1 × 1 / 7 × 2

1 × 1 = 1 ⬅ your NUMERATOR (top number)

7 × 2 = 14 ⬅ your DENOMINATOR (bottom number)

1(1) / 7(2) = 1/14

Answer: 1/14 ✅

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)

Answer:

[tex]m\angle WYX=46^o[/tex]

[tex]m\angle YWX=63^o[/tex]

Step-by-step explanation:

The complete question in the attached figure

we know that

A scalene triangle has three different interior angles and three different length sides

In this problem

[tex]m\angle WYX=46^o[/tex] ----> by vertical angles

[tex]m\angle WXY=71^o[/tex] ----> is given

Find the measure of the third angle ∠YWX

Remember that the sum of the interior angles in any triangle must be equal to 180 degrees

so

[tex]46^o+71^o+m\angle YWX=180^o[/tex]

[tex]m\angle YWX=180^o-117^o=63^o[/tex]

Verify each statement

1) [tex]m\angle WYX=46^o[/tex] ---> is true (see explanation)

2) [tex]m\angle YWX=63^o[/tex] ---> is true (see explanation)

3) [tex]m\angle WXY=46^o[/tex] ---> is not true because ∠WXY is given and is 71 degrees

4) [tex]m\angle YWX=46^o[/tex] ---> is not true because [tex]m\angle YWX=63^o[/tex]

5) [tex]m\angle WYX=134^o[/tex] --> is not true because [tex]m\angle WYX=46^o[/tex]

The question seems to contain an error - a triangle's angles cannot sum to more than 180 degrees. Assuming the triangle issue is corrected, principles like the Triangle Sum Theorem, and laws of sines and cosines would be applied to solve it.

The question refers to a diagram depicting scalene triangle WXY, which suggests a problem in geometry, a branch of mathematics. However, the information about the measure of angle ZWXY being 710 degrees seems incorrect since the sum of angles in any triangle cannot exceed 180 degrees. It appears there's a typographical error or a misunderstanding in the transcription of the problem. In a triangle, the measures of the three interior angles always add up to 180 degrees, and no single angle can measure more than 180 degrees because it would no longer be a triangle.

Without a correct diagram or clarification of the angle measures, providing a step-by-step solution to this geometric problem is not feasible. Nonetheless, if the problem was corrected and it involves solving for missing angles or sides of a scalene triangle, one could apply geometry principles and theorems such as the Triangle Sum Theorem, the Law of Sines, and the Law of Cosines depending on the given information.

Answer:

B. All squares are rectangles.

Step-by-step explanation:

Answer:

Every square is a rectangle

Step-by-step explanation: