what is the volume ​

Answer:

see explanation

Step-by-step explanation:

given Δ ABD is isosceles with AB = AD then base angles are congruent, so

∠ ADB = ∠ ABD = 72°

then

∠ BAD = 180° - (72 + 72)° = 180° - 144° = 36° ( sum of angles in a triangle )

given Δ ABC is isosceles , then

∠ BCD = ∠ BAD = 36°

the exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

∠ ADB is an exterior angle of Δ BCD , then

∠ BCD + ∠ DBC = ∠ ADB

36° + ∠ DBC = 72° ( subtract 36° from both sides )

∠ DBC = 36°

So ∠ BCD = ∠ DBC = 36°

Thus the base angles of Δ BCD are congruent , then

Δ BCD is isosceles with BD = CD

Answer:

y=-2

Step-by-step explanation:

can i get brainliest please???

it would be very much appreciated

have a nice day :)

Answer:

y=-2

Step-by-step explanation:

3(y-3)=-15

Divide both sides by 3:

3(y-3)/3=-15/3

Simplify:

3(y-3)/3=-15/3

3(y-3)/3

Divide the numbers:3/3=1

=y-3

Simplify:

-15/3

Divide the numbers:15/3=5

=-5

y-3=-5

Add 3 to both sides:

y-3+3=-5+3

Simplify:

y=-2

reduce the square root of

There is no square root for the negative number

so, this is represent a complex number

So,

Answer:

The remaining is 75%, the length of the stick would be 1.2

Step-by-step explanation:

According to the information given,

We know that Brian cut off 25% of a stick which was 1.6 meters long

and 1.6 is the 100% of the stick:

It is fairly easy to calculate this, subtract 25 from 100 ( 100 - 25 ), which is equal to 75.

Hence, the answer is 75% and 1.2 for the remaining length of the stick

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Answer:

-79

Step-by-step explanation:

Set up the composite function and simplify.

As the number of countries is more than 48, so there are 3 countries that have the same flag.

There are four colours, red, white, blue and green; and each flag has three horizontal stripes of different colours.

The top horizontal stripe can be of 4 colours (any of the four colours).

The middle horizontal stripe can be of 3 colours (Except the colour of the top stripe).

The bottom horizontal stripe can be of 2 colours (Except the colour of the top and middle stripe).

The total possible no. of flags is = 4 X 3 X 2 = 24.

So, the possibility of different colour flags is only 24.

24 X 2 = 48, so two countries will have flags of same colours.

Here, number of countries is more than 48, so from 49th country to 64th country the type of flag will be repeated.

Therefore, there are 3 countries having same flag.

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Answer:

To convert euros to pounds, we have to multiply the amount in euros by the exchange rate. So, the sunglasses cost 90 * 0.875 = 78.75 pounds.

To use a suitable approximation, we can round the exchange rate to the nearest hundredth, which is 0.88. This makes the calculation easier and gives a close estimate of the actual value.

Using the rounded exchange rate, the sunglasses cost 90 * 0.88 = 79.2 pounds.

We can see that both the exact and the approximate values are greater than 70 pounds, so Elyas is wrong. The sunglasses cost more than 70 pounds

Step-by-step explanation:

The number of quarters is 2 and mass of quarter is 0.006 Kg.

With scientific notation, one can express extremely big or extremely small values. If a number between 1 and 10 is multiplied by a power of 10, the result is written in scientific notation.

Given:

The number of quarters minted in 2018 was about 2 x 10°

and, The mass of a quarter is about 6 X \(10^{-3\) kg.

As, in standard form the decimal is place after one significant and the rest raised to 10 to the powers and if the number are in power then it can be written in form of decimal.

Here, number of quarters minted is already in standard form 2 x 10° or 2 x 1

and,  mass of a quarter can be written as

= 6 X \(10^{-3\) k

= 6/ 10³

= 6/ 1000

= 0.006

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Based on the information in the image, it can be inferred that the sides of the box measure 5 cm each.

To find the measure of the sides of the box we must carry out the following mathematical procedure:

As we know the volume of a cube is the equivalent to the length of its sides raised to the cube (raised to the 3). In this case, to identify the value of the sides we must find the cube root of the volume and the result is the length of the sides.

So this cube has a volume of 125cm³, so its sides would be the cube root of 125.

\(\sqrt[3]{125} = 5\)

According to the above, the length of the sides is 5 taking into account that all the sides are equal.

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Turn me into a superhero

any decimal times a multiple of 10 means that the decimal will move to the right based on the number of zeros

therefore

4.312 * 100 = 431.2

hope this helps  

Answer:

431.2

Step-by-step explanation:

\( \\ 4.312 \times 100\)

\( \\ = \frac{4312}{1000} \times 100\)

\( \\ = \frac{4312}{10} \)

\( \\ = 431.2\)

Answer:

x = 14.4

y = 11.25

Step-by-step explanation:

✔️Find x:

Given that ∆ABC is similar to ∆DEF, it follows that their corresponding sides must be proportional to each other.

Thus:

\( \frac{AB}{DE} = \frac{AC}{DF} \)

AB = 15

DE = 12

AC = 18

DF = x

Plug in the values

\( \frac{15}{12} = \frac{18}{x} \)

Cross multiply

\( 15*x = 18*12 \)

\( 15x = 216 \)

Divide both sides by 15

x = 14.4

✔️Find y:

\( \frac{AB}{DE} = \frac{BC}{EF} \)

AB = 15

DE = 12

BC = y

EF = 9

Plug in the values

\( \frac{15}{12} = \frac{y}{9} \)

Multiply both sides by 9

\( \frac{15}{12}*9 = \frac{y}{9}*9 \)

\( \frac{15*9}{12} = y \)

\( y = 11.25 \)

Answer:

6

Step-by-step explanation:

Answer: GCF of 18 and 30 is 6.

Answer:

9

Step-by-step explanation:

18,1,2,3,6,9

30,1,2,3,5,6,9

Answer:

79,000

Step-by-step explanation:

:]

Answer:

79000.

Step-by-step explanation:

Answer:

360°

Step-by-step explanation:

The sum of the exterior angles of any n-gon is 360°

   The line is positive because it is going upwards. The y-intercept is positive 3. It can be found by seeing where the line intercepts the y-axis. The slope of the line is 2 and it can be found by using "rise over run."

(I saw the image on another question you had asked. Have a nice day!)

Answer:

$13.50

Step-by-step explanation:

If I am taking off 40%, that means that the dress now cost 60% of the original cost.  .6 x 20 is 12.

You could also calculate the 20% off and subtract that from the original cost.  .4 x 20 =8.  Now 20 - 8 is also 12.

Now, we have to calculate the tax.  10% of 12 is .1 x 12 or $1.20.  We add the tax to the 12 to get 13.50.

Answer:

51,200

Step-by-step explanation:

a day and a half = 36 hours

36/4 = 9

There are 9 doubling periods

how many bacteria will there be in a day and a half?

100 * 2^9

100 * 512

51200

Answer:

24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99 are missing num

By reflecting the given points about y=2, the x-coordinates remain the same, then we have

then, the new triangle is:

where the red line represents the line y=2. We found the new points by searching the points which are at the same distance of the original poinst to the line:

Then, the preimage and the image after the reflection are:

The equations that represent the circle having a with radius 8 and center (10,−7) are; (x - 10)² + (y + 7)² = 8²

The standard form of the equation of a circle is (x - h)² + (y - k)² = r², where (h, k) is the center of the circle, and r is its radius.

We have given that circle having radius of 8 units. Thus, r = 8.

Since we know that circle having the center (10,−7).

Thus, the equation of the circle, with a radius of 8 units is;

(x - h)² + (y - k)² = r²

(x - 10)² + (y + 7)² = 8²

Thus, the equations that represent the circle having a with radius 8 and center (10,−7) are; (x - 10)² + (y + 7)² = 8²

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The domain of the quadratic function in this problem is given as follows:

All real values.

The domain of a function is the set of all the possible input values that can be assumed by the function.

On the graph, the domain of the function is given by the values of x of the function.

A quadratic function has no restrictions on the domain, hence it is defined by all the real values.

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Answer:

The height of the model should be 36 cm

Step-by-step explanation:

The ratio given by the scale "2 cm : 1.5 m", is what we need to use to write a proportion and solve for the unknown height "h". This means that 2 cm is to 1.5 meters, as "h" cm is to 27 meters, which can be written in math form with the following proportion, and solved for the unknown:

\(\frac{2\,cm}{1.5\,m} =\frac{h}{27\,m} \\\frac{2\,*\,27}{1.5} \,cm\\h= 36\,cm\)

3900000×18% = 702000

702000÷2500 = 280.8 per share dividend

450×280.8 = 126360

Answer:

9

Step-by-step explanation:

5 x 9 is 45 plus 5 gives you 50

Answer:9

Step-by-step explanation:

5*9=45

45+5=50

Answer:

Step-by-step explanation:

surface area=4×(4×2)+2×(4×4)=32+32=64 m²

The probability of drawing a king from a standard deck of 52 cards is 1/13.

In a standard deck of 52 playing cards, there are four kings: the king of hearts, the king of diamonds, the king of clubs, and the king of spades.

To find the probability of drawing a king, we need to determine the ratio of favorable outcomes (drawing a king) to the total number of possible outcomes (drawing any card from the deck).

The total number of possible outcomes is 52 because there are 52 cards in the deck.

The favorable outcomes, in this case, are the four kings.

Therefore, the probability of drawing a king is given by:

Probability = (Number of favorable outcomes) / (Number of possible outcomes)

= 4 / 52

= 1 / 13

Thus, the probability of drawing a king from a standard deck of 52 cards is 1/13.

This means that out of every 13 cards drawn, on average, one of them will be a king.

It is important to note that the probability of drawing a king remains the same regardless of any previous cards that have been drawn or any other factors.

Each draw is independent, and the probability of drawing a king is constant.

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Answer:

1 1/6

Step-by-step explanation:

Answer:

The answer is 1 1/6

Step-by-step explanation:

The reason why this answer is 1 1/6 is that you're dividing the numbers 7 and 6 which equals 1.16. So, 1 is the quotient and the other 1 is the remainder, and 6(denominator) stays in the fraction as the denominator. One goes into a whole number and the other one goes into the numerator, while the six stays in the denominator (1 1/6).

Answer:

1) the planning value for the population standard deviation is 10,000

2)

a) Margin of error E = 500, n = 1536.64 ≈ 1537

b) Margin of error E = 200, n = 9604

c) Margin of error E = 100, n = 38416

3)

As we can see, sample size corresponding to margin of error of $100 is too large and may not be feasible.

Hence, I will not recommend trying to obtain the $100 margin of error in the present case.

Step-by-step explanation:

Given the data in the question;

1) Planning Value for the population standard deviation will be;

⇒ ( 50,000 - 10,000 ) / 4

= 40,000 / 4

σ = 10,000

Hence, the planning value for the population standard deviation is 10,000

2) how large a sample should be taken if the desired margin of error is;

we know that, n = [ (\(z_{\alpha /2\) × σ ) / E ]²

given that confidence level = 95%, so \(z_{\alpha /2\)  = 1.96

Now,

a) Margin of error E = 500

n = [ (\(z_{\alpha /2\) × σ ) / E ]²

n = [ ( 1.96 × 10000 ) / 500 ]²

n = [ 19600 / 500 ]²

n = 1536.64 ≈ 1537

b) Margin of error E = 200

n = [ (\(z_{\alpha /2\) × σ ) / E ]²

n = [ ( 1.96 × 10000 ) / 200 ]²

n = [ 19600 / 200 ]²

n = 9604

c)  Margin of error E = 100

n = [ (\(z_{\alpha /2\) × σ ) / E ]²

n = [ ( 1.96 × 10000 ) / 100 ]²

n = [ 19600 / 100 ]²

n = 38416

3) Would you recommend trying to obtain the $100 margin of error?

As we can see, sample size corresponding to margin of error of $100 is too large and may not be feasible.

Hence, I will not recommend trying to obtain the $100 margin of error in the present case.

Answer:

where is the question bro?

Step-by-step explanation: