DBE is obtained by enlarging ABC. If the area of ABC is 3 square units, what is the area of DBE?

Answer:

Option D is correct.

Step-by-step explanation:

The additive inverse of a number is the same number with the negative sign

i.e. if we have a number 1 then it's additive inverse would be -1

So if we add both the number and its additive inverse the answer would be zero.

1+(-1) = 0

So, Option D their sum is always zero is correct.

Answer: Option D

Their sum is always zero

Step-by-step explanation:

Given any number x, the additive inverse of x is -x.

For example, the additive inverse of 3 is - 3, the additive inverse of 2.2 is -2.2.

In this way, note that adding a number with the additive inverse of this number will always result in the number zero.

[tex]x + (-x) = 0[/tex]

Therefore, the correct option is option D

1. The first step to answering this question is to find the volume of a single spherical lead shot and then multiply this by 5000 to find the total volume of 5000 lead shots.

So, given that the lead shots are spherical, we must use the formula for the volume of a sphere:

V = (4/3)πr^3

Given that the diameter is 3mm, we can find the radius by dividing this by 2:

r = 3/2 = 1.5 mm

From here, there are two ways to proceed; we can either covert the radius into cm, or we can continue with the mm value and then convert the resulting volume in cubic mm into cubic cm (since we are given that 1 cm cubed of lead weighs 11.4g, we can already tell that we will have to finish with a volume in cubic cm). I will show both these methods as a) and b), respectively.

a) If there are 10 mm in 1 cm, and we have a radius of 1.5 mm, then to convert this into cm we need to simply divide by 10:

1.5 mm = 1.5/10 = 0.15 cm

Now that we have our radius in cm form, we can substitute this into the formula for the volume of a sphere that we specified at the very beginning:

V = (4/3)πr^3

V = (4/3)π(0.15)^3

V = (9/2000)π cm cubed, or

0.0045π cm cubed (in decimal form)

Now that we have the volume of one lead shot, all we need to do is multiply this by 5000 to find the volume of 5000 lead shots:

0.0045π*5000 = 22.5π cm cubed

Since we already have the total volume in cm cubed, there is no need to do any more conversions.

b) In this method, we will use radius = 1.5 mm and substitute this into the general formula for the volume of a sphere again:

V = (4/3)πr^3

V = (4/3)π(1.5)^3

V = (9/2)π mm cubed, or

4.5π mm cubed (in decimal form)

Thus, to calculate the volume of 5000 lead shots, we must multiply this value by 5000:

4.5π*5000 = 22500π mm cubed

Now comes the part where we must convert this into cubic cm; to do this we simply take the value in cubic mm and divide it by 10^3 (ie. 1000). Thus:

22500π/1000 = 22.5π cm cubed

As you can see, we end up with the same answer as in a). The key here is to remember that you need to convert, so maybe write a note to yourself at the start of the question and pay close attention to the different units in both the question and your working.

2. Now that we know that the volume of 5000 spherical lead shots is 22.5π cm cubed, we need to calculate their mass.

We are given that 1 cm cubed of lead weighs 11.4 g, thus to calculate the mass of 22.5π cm cubed of lead, we need to multiply this value by 11.4. Thus:

Mass = 22.5π*11.4

= 256.5π g

Note that this is the answer in exact form. I wasn't entirely sure about the rounding required or the value of π that you were specified to use (eg. exact, 22/7, 3.14), so if you wanted me to edit the answer to reflect that or had any questions, feel free to comment below.

Answer:

53+47

Step-by-step explanation:

100-53 is 47. 53-47 gives you 6

Answer:

The numbers are 53 and 47.

Step-by-step explanation:

You didn't write out the problem completely, but this may be the problem:

The sum of two numbers is 100. The difference of the two numbers is 6. What are the numbers?

Let the numbers be x and y.

The sum of two numbers is 100.

x + y = 100

The difference of the two numbers is 6.

x - y = 6

We have a system of two equations in two variables.

x + y = 100

x - y = 6

Add the equations.

2x = 106

x = 53

Now substitute 53 for x in the first equation and solve for y.

53 + y = 100

Subtract 53 from both sides.

y = 47

The numbers are 53 and 47.

Answer:  [tex]\bold{\sqrt[8]{2^7} }[/tex]

Step-by-step explanation:

[tex]\sqrt[4]{2} \times \sqrt[8]{2} \times \sqrt[2]{2}\\\\={2^{\frac{1}{4}}\times 2^{\frac{1}{8}}\times 2^{\frac{1}{2}}\\\\=2^{\frac{1}{4}+\frac{1}{8}+\frac{1}{2}}\\\\=2^{\frac{2}{8}+\frac{1}{8}+\frac{4}{8}}\\\\=2^{\frac{7}{8}}\\\\\\=\large\boxed{\sqrt[8]{2^7}}[/tex]

In a translation, the image of vertex A is represented by A’T’ in the new triangle.

In a translation, the relative positions of the points in the shape are preserved, but the shape is moved from one location to another without changing its orientation or size. So, if the translation takes triangle CAT to C’A’T’, the corresponding vertex A in the original triangle will be mapped to vertex A' in the new triangle.

Therefore, A’T’ represents the image of vertex A after the translation, and it is the corresponding vertex in the new triangle.

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A’T’ is the image of line segment AT after a geometric translation has been performed on triangle CAT. It will have the same length as AT and will be parallel to it.

In the field of mathematics, particularly in geometry, a translation is a term that describes a function that moves every point a constant distance in a specified direction. The term 'A’T’' in your question refers to the line segment connecting points A’ and T’ after the translation. Assuming that a translation takes triangle CAT to C’A’T’, A’T’ will be the image of AT after the translation.

The properties of a translation are such that the length of the segment will remain the same, and the points on the segment, A and T, will simply move, maintaining their initial orientation. So, segment A’T’ will be equal in length to segment AT of the pre-image triangle CAT and will be parallel to it.

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Answer:

number 1

Step-by-step explanation:

Final answer:

Using the Pythagorean theorem with the given lengths of the sides a=8 and b=15, the hypotenuse c is found to be 17 units.

Explanation:

The question involves finding the length of the hypotenuse c in a right triangle using the Pythagorean theorem, which states that in a right triangle the square of the length of the hypotenuse (c) is equal to the sum of the squares of the lengths of the other two sides (a and b). Given that a = 8 and b = 15, we can apply the theorem:

c² = a² + b²

c² = 8² + 15²

c² = 64 + 225

c² = 289

c = √289

c = 17

Therefore, the length of the hypotenuse c is 17 units.

Answer:

d. 3/6

Step-by-step explanation:7/14 simplifies to 1/2 and 3/6 also simplifies to 1/2

Using the concept of ratio and proportion to solve the problem. The ratio is 3/6. Then Option D is correct.

A ratio is an ordered couple of numbers a and b, written as a/b where b does not equal 0. A proportion is an equation in which two ratios are set equal to each other.

Given

7/14 is an expression.

To find

The ratio forms a proportion with 7/14.

7/14 is an expression.

On simplifying, we have

[tex]\dfrac{7}{14} = \dfrac{1}{2}[/tex]

On multiplying and dividing it by 3. then we have

[tex]\dfrac{1}{2} = \dfrac{1*3}{2*3} = \dfrac{3}{6}[/tex]

Thus, Option D is correct.

More about the ratio and the proportion link is given below.

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Answer:

4⁄9

Step-by-step explanation:

As discussed in one of my videos on my channel [USERNAME: MATHEMATICS WIZARD], whenever you are dividing mixed numbers or fractions, you multiply the first term by the divisor's multiplicative inverse [reciprocal]. So you will end up with [⅔]², which is 4⁄9. You understand?

I am joyous to assist you anytime.

Follow below steps:

To find the ratio in simplest form of 2/3 to 3/2, first identify the reciprocal relationship between the two fractions. To compare them as a ratio, we need them to have the same denominator.

Multiply the numerator and denominator of the first fraction by 2, and the numerator and the denominator of the second fraction by 3, so they both have 6 as a common denominator:

(2/3) x (2/2) = 4/6

(3/2) x (3/3) = 9/6

The ratio of 4/6 to 9/6 simplifies to 4:9, since they share the same denominator.

Therefore, the ratio of 2/3 to 3/2 in its simplest form is indeed 4:9.

Answer:

25/169

Step-by-step explanation:

We have 13 marbles ( 5+6+2)

P (blue ) = blue marbles/ total marbles = 5/13

P (blue ,blue) = 5/13* 5/13  since the marble is replaced

                      = 25/169

Answer:

A

Step-by-step explanation:

458,700 = 4.587 * 10^5

Answer:

A

Step-by-step explanation:

For this case we have the following functions:

[tex]f (x) = x + 1\\g (x) = \frac {1} {x}[/tex]

By definition we have to:

[tex](f * g) (x) = f (x) * g (x)[/tex]

So:

[tex]f (x) * g (x) = x + 1 * \frac {1} {x} = \frac {x + 1} {x}[/tex]

The domain of the function is given by the values for which the function is defined. The function is not defined for x = 0.

Then, the domain is given by all real numbers except 0.

The range is the set of all values of and valid.

Then the range is given by all reals except 1.

Answer:

Option C

Answer:

C.

Step-by-step explanation:

All real numbers except y=1

Answer:

A; 4,6,8

Step-by-step explanation:

Answer:

angles 4,6,8

Step-by-step explanation: Did it on i-ready and got it right.

Answer:

The total surface area is [tex]251\ cm^{2}[/tex]

Step-by-step explanation:

we know that

The total surface area of the composite figure is equal to the lateral area of the pyramid plus the lateral area of the cube plus the area of the base of the cube

The lateral area of the pyramid is equal to the area of the four lateral triangular faces of the pyramid

The lateral area of the cube is equal to the area of the four lateral square faces of the cube

so

[tex]SA=4[\frac{1}{2}(b)(h)]+4(b^{2})+b^{2}[/tex]

we have that

[tex]b=6\ cm[/tex]

[tex]h=5.9\ cm[/tex]

substitute

[tex]SA=4[\frac{1}{2}(6)(5.9)]+4(6^{2})+6^{2}[/tex]

[tex]SA=70.8+144+36[/tex]

[tex]SA=250.8\ cm^{2}[/tex]

Round to the nearest square centimeters

[tex]250.8=251\ cm^{2}[/tex]

Answer:

Kembara Club = 72

x = 3

Step-by-step explanation:

120/5+3 = 24.

3*24 = 72

36+72= 108

108/72= 1.5

1.5*2= 3

Kembara=72

x=3

The bacteria population doubles in 4 hours.

So, in 1 hour it increases by x/4 of its population, where x is population.

So in 1/2 hours or 30 minutes, the increase will be x/4 × 1/2 = x/8

=> if we start with 4000 bacterias, population increase after 30 minutes is 4000× 1/8 = 500

So, 500 more bacterias were added

Total bacterias = 4000+500 = 4500 bacterias

Answer:

-4g-3

------------

g+2

Step-by-step explanation:

g+1                     5g+4

-------------  -   ------------------

g+2                     g+2

Since the denominators are the same, subtract the numerators

g+1 - (5g+4)

Distribute the negative sign

g+1 -5g-4

-4g-3

Put this back over the denominator

-4g-3

------------

g+2

Answer:

-4g-3, g+2

Step-by-step explanation:

Answer:

Step-by-step explanation:

The trick is not to include anything under and including 150 miles. So A B and C are not to be checked.

D and E are both true.

Answer:

Correct options are:

D.200 miles  

E.250 miles

Step-by-step explanation:

Cary and his brother took a road trip together.

Cary drove for 50 miles.

Let his brother drove x miles

The total number of miles they drove was more than 200.

⇒ 50+x>200

⇒  x>200-50

⇒  x>150

i.e. Cary's brother drove for more than 150 miles

Hence, options which satisfies the above inequality are:

D.200 miles  

E.250 miles

Using the law of cosines:

Cos (angle) = Adjacent Leg /  Hypotenuse

Cos(28) = x / 64

X = 64 * cos(28)

x = 56.5 km

There is an infinite number of common denominators, but 12 is the least common denominator.  You could also use any other number that is a multiple of 12, such as 24, 36, and 48.

12 is the least common denominator because it is the smallest number that is a multiple of both 4 and 6.

[tex]4*3=12[/tex]

[tex]6*2=12[/tex]

You can also use any other multiples of 12 because they are all multiples of 4 and 6.

Answer:

5pi over 3 cm!

Step-by-step explanation:

The formula used to find the arc length is: [tex]S= r θ[/tex] where, 'r' represents the radius and θ represents the central angle in radians.

We know that r = 5cm and θ=pi/3.

Using the formula:

s =  r θ = 5cm(pi/3) = 5pi/3.

Then, the solution is: 5pi over 3 cm!

Answer: The answer would be -4

Step-by-step explanation:

Answer:

-4

I did the exam trust me ok

Answer:

5

Step-by-step explanation:

Any square root multiplied by the same square root cancels out.

sqr(x) * srt(x) = x

Answer:

5

Step-by-step explanation:

Answer:

See below.

Step-by-step explanation:

An example will illustrate the method:

(2/3)^3  

=  2^3 / 3^3

= 8/27.

Answer:

48 minutes

Step-by-step explanation:

Given that;

Rosalinda can line the football field in 80 minutes

Reggie can line the football field in 120 minutes

Lets assume that if they work together, they will take T minutes to line the football field

Hence;

Thus in 1 minute, Rosalina can line 1/80 of the field where as Reggie can line 1/120 of the field

[tex]\frac{1}{T} =\frac{1}{120} +\frac{1}{80} \\\\\frac{1}{T} =\frac{2+3}{240}\\\\[/tex]

The sum of the two fractions will represent the size of the field that can be lined in 1 minute.

[tex]\frac{1}{T} =\frac{5}{240} \\\\\frac{1}{T} =\frac{1}{48} \\T= 48[/tex]

The reciprocal of the sum of the two fractions will represent the time taken for both Rosalinda and Reggie to line the field.

Answer ; It will take them 48 minutes for them to line the football field

Answer:

48 minutes

Step-by-step explanation:

Reggie can line 1/120 of a football field in 1 minute while Rosalinda can line 1/80 of a football field in 1 minute.

Therefore adding the 2 fractions we get; that BOTH of them can line 1/120+1/80 of a field in 1 minute. 1/120+1/80=1/48.

1/48 of a field can be done in a minute, so it would take them 48 minutes to do 48/48 or 1 whole field.

Answer:

Step-by-step explanation:

The slope-intercept form of an equation of a line:

y = mx + b

m - slope

b - y-intercept (0, b)

We have the slope m = -9 and the y-intercept (0, -2) → b = -2.

Substitute:

y = -9x + (-2) = -9x - 2

Answer:

a. (x+5)(x-5)

b. 3(x+1)(x-5)

c. (x^2+3)(x+2)

Step-by-step explanation:

a. x^2-25

The given expression can be factorized using the formula:

[tex]a^{2} -b^{2} =(a+b)(a-b)\\So,\\x^{2} -25\\=(x)^{2}-(5)^{2}\\=(x+5)(x-5)[/tex]

b. 3x^2-12x-15

We can see that 3 is common in all terms

=3(x^2-4x-5)

In order to make factors, the constant will be multiplied by the co-efficient of highest degree variable

So,

[tex]3[x^{2} -4x-5]\\=3[x^{2}-5x+x-5]\\=3[x(x-5)+1(x-5)]\\=3(x+1)(x-5)[/tex]

c. x^3+2x^2+3x+6

Combining the first and second pair of terms

[tex]x^{3}+2x^{2}+3x+6 \\=[x^{3}+2x^{2}]+[3x+6]\\Taking\ x^{2}\ common\ from\ first\ two\ terms\\=x^{2} (x+2)+3(x+2)\\=(x^{2}+3)(x+2)[/tex]

Answer:

(x+1)(x-3)(x-4)=0 is a polynomial equaiton with the zeros mentioned (the answers could vary-means there are multiple answers)

Step-by-step explanation:

If x=-1 is a zero then (x+1) is a factor

If x=3 is a zero then (x-3) is a factor

If x=4 is a factor then (x-4) is a factor

Put it together (while the polynomial equations can be many different polynomial equations) here is one answer (x+1)(x-3)(x-4)=0

Answer:

-35-5

Step-by-step explanation:

-35-5=-40

which is negative

plz mark my answer as the brainliest

The expression  -35-5 has a negative value after adding two negative number we get negative number option fourth is correct.

It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has a basic four operators that is +, -, ×, and ÷.

We have expressions:

= 2+12

= 14

= (-3)(-8)

= 24

= 10-(-18)

= 10+18

= 28

= -35-5

= -40

Thus, the expression  -35-5 has a negative value after adding two negative number we get negative number option fourth is correct.

Learn more about the arithmetic operation here:

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Answer:

A positive  number

Step-by-step explanation: