Scientists estimate there are _____ different plant species.

A. about 200,000
B. more than 300,000
C. nearly 500,000
D. about 1,000,000

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We are solving 6x6-4+9.

We will do three steps in this case.

First is 6x6, 6x6 is 30.

So now we must keep in our head we have 30 as our first number.

Now, let's -4 from 30. 30-4 is 26.

We just did step 2. Boom!

So, we have 26 as our second number. Let's do our third step.

If we have 26, we need to add 9 to that. To quickly find that we know that 26+10 is 36. That is adding ten, we need 9 so minus 1 from 36 we get 35.

Our final answer is 35.

Answer:

1/3, 4/15, 5/6, and 1/34.

Step-by-step explanation:

If you divide it and it keeps going when you divide it, it is a repeating decimal.

1/3=.333 repeating.

1/3, 4/15, 5/6, and 1/34 are the answers.

Answer: 368 ft^2

Step-by-step explanation:

Pretend it is a square and multiply both sides (23*20=460). The triangle that is cut out has an area of 92 (23*8/2). We know the height of the triangle is 8 because 20-12. We subtract 460-92 and get our answer. :)

to the risk of sounding redundant, as the previous posting is absolutely correct.

Check the picture below.

we know the circum-inscribing figure is a square, namely a 23x20, so it has an area of 23*20 = 460 ft².

the distance from the bottom up, is 20, however to the tip of the triangle is 12, so the diffference is 20 - 12 = 8, meaning the triangle, in yellow, has a height/altitude of 8 ft, and we know its base is 23 ft.

so if we simply take the whole area of the square, and then subtract the area of the triangle, we're in effect making a whole in the squarish area, and what's leftover is the shaded area.

[tex]\bf \stackrel{\textit{square's area}}{(23\cdot 20)}~~~~-~~~~\stackrel{\textit{triangle's area}}{\cfrac{1}{2}(23)(8)}\implies 460~~-~~92\implies 368~ft^2[/tex]

Answer:

[tex]\large\boxed{0.000008=8\cdot10^{-6}}[/tex]

Step-by-step explanation:

The scientific notation:

[tex]a\cdot10^k[/tex]

where 1 ≤ a < 10 and k ∈ Z.

0.000008

You must move the comma 6 places to the right.

[tex]0\underbrace{.000008}_{6\rightarrow}=8\cdot10^{-6}[/tex]

[tex]0.000008=\dfrac{8}{1,000,000}=8\cdot10^{-6}[/tex]

To express the diameter of a human red blood cell in scientific notation, we can write it as 8.0 × 10^-6 meters.

The diameter of a human red blood cell is approximately 0.000008 meters. To express this number in scientific notation, we can use the concept of significant figures. In this case, the leading zeros are not significant, so we can write the number as 8.0 × 10-6 meters. This scientific notation represents the size of a human red blood cell.

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Answer:

Step-by-step explanation:

add a picture of the question please

Solution:- A shopkeeper with a basket of eggs finds that if he sells 3 eggs at a time there is only one egg left if he sells four eggs at a time there is again 1 egg left however if the trader sells 7 is at a time there is no egg left is the capacity of the basket is 108

LCM of 3 and 4 = 3×4 = 12

The capacity of the basket is 100.

So, there may be:-

= 12 × 8 +1

= 96 + 1

= 97 eggs.

But, 97 is not divisible by 7.

Again, there may be:

12 × 7 +1 = 85 eggs.

12 × 6 +1 = 73 eggs.

12 × 5 +1 = 61 eggs.

12 × 4 +1 = 49 eggs.

Among these numbers 85 , 73 and 61 are not divisible by 7. But 49 is divisible by 7.

So, the number of eggs in the basket is 49.

[Answer = 49]

Answer:

16

Step-by-step explanation:

Answer:

[tex](g\circ f)(0)=16[/tex]

Step-by-step explanation:

The given functions are

[tex]f(x)=-3x+4[/tex] and [tex]g(x)=x^2[/tex]

We first find the composition; [tex](g\circ f)(x)[/tex]

[tex](g\circ f)(x)=g(f(x))[/tex]

[tex](g\circ f)(x)=g(-3x+4)[/tex]

[tex](g\circ f)(x)=(-3x+4)^2[/tex]

We now plug in x=0, to obtain;

[tex](g\circ f)(0)=(-3(0)+4)^2[/tex]

[tex](g\circ f)(0)=(4)^2[/tex]

[tex](g\circ f)(0)=16[/tex]

Answer:

17.24

Step-by-step explanation:

The value of y is 243 ft.

We can use the sine function to find the missing side.

sin(28°) = opposite / hypotenuse

sin(28°) = y / 500

y = 500 * sin(28°)

y = 500 * 0.485

y = 242.5 ft

Round to the nearest tenth:

y = 243 ft

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All angles are the same and all side lengths are equal/congruent

Congruent triangles are triangles that have the same size and shape, with corresponding sides and angles that are equal. They can be proven congruent using criteria such as SSS, SAS, and ASA.

**Congruent triangles** are triangles that have the same size and shape. In other words, all corresponding sides and angles of congruent triangles are equal. There are several ways to prove that triangles are congruent, such as the Side-Side-Side (SSS) Criteria, Side-Angle-Side (SAS) Criteria, Angle-Side-Angle (ASA) Criteria, and more. For example, if two triangles have the same length for each corresponding side, they are congruent.

Answer:

Honestly i think i know which diagrams your talking about but if it there is an option that has 20 squares and only 15 are shaded then thats the one u choose I'm thinking that option is c

I hope this helps please mark me brainliest

Answer:

C. The third diagram

Step-by-step explanation:

I did the quiz on edge, hope u have a good day :)

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V

To find the diameter of a cone with a given volume and height, use the volume formula, substitute the given values, and solve for the radius. The calculated diameter of this cone is approximately 4.90 meters.

To find the diameter of a cone given its volume and height, we can use the formula for the volume of a cone: V = (1/3)πr²h, where V is the volume, r is the radius of the base, and h is the height of the cone. Given that the volume (V) is 20π cubic meters and the height (h) is 10 meters, we can substitute these values into the formula and solve for r.

First, rearrange the formula to solve for r: r = √((3V)/(π×h)). Substitute V = 20π and h = 10 into the equation to get r = √((3×20π)/(π×10)) = √(6) meters. Therefore, the diameter of the cone, which is twice the radius, is 2×√(6) meters, or approximately 4.90 meters.

The diameter of the cone is  [tex]\[ d = 4\sqrt{3} \][/tex]

To find the diameter of the cone, we first need to determine the radius of the cone's base. The volume V of a cone can be calculated using the formula:

[tex]\[ V = \frac{1}{3} \pi r^2 h \][/tex]

where r is the radius of the base and h is the height of the cone. Given that the volume V is [tex]\(20\pi\)[/tex] cubic meters and the height  [tex]\(h\) is \(10\)[/tex] meters, we can set up the equation:

[tex]\[ 20\pi = \frac{1}{3} \pi r^2 \cdot 10 \][/tex]

[tex]\[ 60 = r^2 \cdot 10 \] \[ \frac{60}{10} = r^2 \] \[ r^2 = 6 \][/tex]

Taking the square root of both sides gives us the radius r:

[tex]\[ r = \sqrt{6} \][/tex]

Since the radius is half the diameter, we can find the diameter d by multiplying the radius by 2:

[tex]\[ d = 2r \] \[ d = 2\sqrt{6} \] \[ \sqrt{6} = \sqrt{2 \cdot 3} \] \[ \sqrt{6} = \sqrt{2} \cdot \sqrt{3} \] \[ \sqrt{6} = \sqrt{2} \cdot \sqrt{3} = 2\sqrt{3} \][/tex]

Thus, the diameter d of the cone is:

[tex]\[ d = 2 \cdot 2\sqrt{3} \][/tex]

[tex]\[ d = 4\sqrt{3} \][/tex]

Answer:

Last option

y ≤ 1/2 x - 1

Step-by-step explanation:

The graph is linear inequality. Since the graph is a solid line so the inequality symbol is either ≥ or ≤.

The colored grey is shaded below the line, so the symbol is ≤.

So either  y≤1/2x-1 or  y≤2x-1

Now we have to find the slope to see which equation is the right one.

(2,0) and (0,-1)

Slope = (0 + 1) /(2-0) = 1/2 and b = y intercept = -1

So equation:

y ≤ 1/2 x - 1

The correct inequality that represents the graph is y≤2x-1.

In this question, we are asked to determine which inequality best represents the graph. From the given options, the correct choice is b. y≤2x-1. This choice represents a graph where y is less than or equal to 2x minus 1. To verify this, we can examine some points on the graph.

For example, let's test the point (0,0). Substituting these values into the inequality, we get 0 ≤ 2(0) - 1, which simplifies to 0 ≤ -1. Since this statement is true, the point (0,0) lies on the graph. Similarly, we can test other points to confirm that the inequality correctly represents the graph.

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Answer:

B. Division

Step-by-step explanation:

inverse - something that is the opposite or reverse of something else.

Mathematically, inverse operations are opposite operations. Addition is the opposite of subtraction; division is the opposite of multiplication, and so on. Inverse operations are used to solve simple algebraic equations to more difficult equations that involve exponents, logarithms, and trigonometry.

Division is the operation that has an inverse relationship with multiplication, as they 'undo' each other through the use of reciprocals.

The operation that has an inverse relationship with multiplication is division. In mathematics, inverse operations are pairs of operations that 'undo' each other. Just as subtraction is the inverse operation of addition, division is the inverse when it comes to multiplication. When you multiply a number by another number, you can reverse this action by dividing the product by the same number.

To better grasp this concept, let's consider the relationship between multiplication and division with fractions. If we divide by 8, it is equivalent to multiplying by 1/8. Conversely, multiplying by 1/8 is the same as dividing by 8. Therefore, these two operations, multiplication and division, are interconnected through the use of reciprocals.

Answer:

16

Step-by-step explanation:

(-4) * (-4) = 16

BECAUSE... a negative times a negative equals positive

Answer:

16

Step-by-step explanation:

-4 X -4 = 16

B squared means a number times itself.

Parallel lines are preserved in:

Reflections, Translations & Rotations

Parallel lines maintain their geometric property of not intersecting through all three transformations: rotations, reflections, and translations. Therefore, the correct answer is Option B. l, II, and III.

In the field of mathematics, particularly in geometry, transformations involve the manipulation of shapes while preserving their essential properties. In the case of parallel lines, their key property is that they do not intersect, regardless of their length.

Out of the transformations listed - rotations, reflections, and translations - parallel lines are preserved in all three. Therefore, your answer is Option B. l, II, and III.

Specifically, a rotation spins the figure around a fixed point, a reflection flips the figure over a line, and a translation slides the figure along a straight line, parallel to the original lines. In all these transformations, the lines remain parallel to each other.

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the complete question is written below:

Parallel lines are preserved in which of the following types of transformations?

l. rotations

II. reflections

Ill. translations

A. I and II only

B. l, II and Ill

C. I only

D. I and III only

Answer:

[tex]\boxed{\bold{-5cd}}[/tex]

Step By Step Explanation:

[ Step One ] Expand [tex]\bold{-d\left(2c-4\right)}[/tex]

[tex]\bold{-2cd+4d}[/tex]

[ Step Two ] Rewrite Equation

[tex]\bold{-3cd-2cd+4d-4d}[/tex]

[ Step Three ] Simplify [tex]\bold{-3cd-2cd+4d-4d}[/tex]

[tex]\bold{-5cd}[/tex]

Answer:

The Answer is -5CD when simplified

Step-by-step explanation:

1) Distributive property

-3cd - d ( 2c - 4 ) - 4d

Turns to:  3cd -2cd + 4d - 4d  Multiplying to negative give you a positive.

2) combine like terms

-3cd - 2cd = -5cd

4d - 4d = 0

3) Answer

-5cd is your answer

Hopes this helps!

Answer:

Answer: part a is 4.8 and part b is 3.125

Step-by-step explanation:

PART A.  60/25 = 2.4 (inches)

PART B.  25/4 = 6.26 (miles)

Hope this helps! Please mark me as brainliest if it did.

Answer:

The solution of the system of equations is the point [tex](1,-1.5)[/tex]

Step-by-step explanation:

we have

[tex]3x-2y=6[/tex] -----> equation A

[tex]3x+10y=-12[/tex] -----> equation B

we know that

The solution of the system of equations is equal to the intersection point both graphs

using a graphing tool

The intersection point is [tex](1,-1.5)[/tex]

therefore

The solution of the system of equations is the point [tex](1,-1.5)[/tex]

Answer:

9.) A. integers

Step-by-step explanation:

rational numbers can't have negatives

whole numbers can't have fractions

negative numbers can't have positives

---hope this helps!!

Answer:

Alternative C is correct;

Yes, there is evidence at the 5% significance level

Step-by-step explanation:

To determine whether a linear relationship does exist between shoe size and height, we shall simply be testing the null hypothesis;

β=0

against the alternative;

β≠0

From the output, the p-value of the coefficient of height is given as 0.042 or equivalently 4.2%

Since the p-value, 4.2% is less than 5% level of significance we reject the null hypothesis that claims no linear relationship exists between the shoe size and height.

Answer: D.

Step-by-step explanation: it’s D because when you do the volume of mode A, you get 48 units. When you do the volume of model B you get 40 units. Use the formula V=length x width x height!

Answer: One

Step-by-step explanation:

If you say the fraction out loud, it it pronounced one third.

♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫

➷There are 3 thirds on one third, because if something is one THRID, that means it is one out of three parts. One third of one third is 1/9.

✽

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

TROLLER

Answer:

3160

Step-by-step explanation:

Answer:

3160

Step-by-step explanation:

Answer:

1/2

Step-by-step explanation:

3 * 1/6 = 3/6

Which can simplify to 1/2 if you divide the top and bottom by 2.

The product 3x1/6 simplifies to 1/2.

To simplify the product 3x1/6, we need to perform the multiplication and express the result in its simplest form.

First, let's calculate the product:

3 x 1/6 = 3/1 x 1/6 = 3/6

Now, we can simplify the fraction 3/6 by dividing both the numerator and the denominator by their greatest common divisor (GCD), which is 3 in this case:

3/6 ÷ 3/3

The divided by six by three by three

= (3 ÷ 3) / (6 ÷ 3)

=3/3×3/6

= 1/2

Therefore, the product 3x1/6 simplifies to 1/2.

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Answer: 251 square meters.

Step-by-step explanation:

You need to use the formula for calculate the lateral surface area of a cone:

[tex]LA=3.14rl[/tex]

Being "r" the radius of the cone and "l" the slant height.

Calculate the radius:

[tex]r=\frac{diameter}{2}\\\\r=\frac{16m}{2}\\\\r=8m[/tex]

Now that you know the radius and the slant height of the cone, you need to substitute them into the formula for calculate the lateral surface area of the cone:

[tex]LA=(3.14)(8m)(10m)\\LA=251.2m^2[/tex]

Therefore, the closest choice to the lateral surface area of the cone is: 251 square meters.

Answer:

5.5%

Step-by-step explanation:

100%-20%=80%

80%×$75=$60

3.30/60×100%=5.5%

the sales tax rate is 5.5%

Final answer:

The sales tax rate on Sunil's discounted concert ticket is found by calculating the discounted ticket price and then dividing the sales tax paid by this discounted price, resulting in a sales tax rate of 5.5%.

Explanation:

To find the sales tax rate, we need to calculate the discounted price of the concert ticket and then use the amount of sales tax paid to determine the rate. Initially, Sunil receives a 20% discount on a $75 ticket.

The calculation for the discount amount is $75 × 0.20 = $15. Thus, Sunil's discounted ticket price is $75 - $15 = $60.

Now, knowing Sunil paid $3.30 in sales tax for the discounted ticket, we can find the sales tax rate by dividing the sales tax amount by the discounted ticket price:

$3.30 ÷ $60 = 0.055, or 5.5% when converted to a percentage. Therefore, the sales tax rate is 5.5%.

The answers are 0, 2, and 4. The other ones turn out to be greater than 6

Answer:0,2,4

Step-by-step explanation:

EGDE 2023

➷ (18.2 x 2) + 153.1 = 189.5 (this is considered the highest value)

153.1 - (18.2 x 2) = 116.7 (this is considered the lowest value

An unusual value would be more than 2 standard deviations away from the mean in a positive or negative direction.

In this case, the value is less than the highest value.

The value of 187 would be considered usual as it is less than 2 standard deviations away from the mean.

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➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

The value of 187 from a distribution with a mean of 153.1 and standard deviation of 18.2 can be considered 'usual'. This conclusion is reached by calculating the Z-score and determining that it falls within the usual range of +/-2 standard deviations from the mean.

The question provided is one that tackles the subject of statistics, more specifically, the concepts of mean, standard deviation, and the identification of data as being usual or unusual. The distribution in question has a mean of 153.1 and a standard deviation of 18.2. With a value of 187, we need to determine whether it would be considered usual or unusual.

To answer this, we would utilize the concept of Z-score, which measures how many standard deviations an element is from the mean. A Z-score of +/- 2 or more is generally considered unusual. Let's compute:

Z = (X - μ) / σ

Where:

Substitute these into the Z-score formula:

Z = (187 - 153.1) / 18.2 = 1.86

As the Z score is within the range of +/-2, the value 187 is thus interpreted as usual.

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Answer:

4600

Step-by-step explanation:

This is an arithmetic sequence with common difference d between consecutive terms.

d = - 2 - (- 6) = 2 - (- 2) = 6 - 2 = 4

The sum to n terms of an arithmetic sequence is

[tex]S_{n}[/tex] = [tex]\frac{n}{2}[/tex][ 2a + (n - 1)d ]

where a is the first term

here a = - 6, d= 4 and n = 50, hence

[tex]S_{50}[/tex] = [tex]\frac{50}{2}[/tex] [ (2 × - 6) + (49 × 4) ]

                           = 25 ( - 12 + 196 )

                           = 25 × 184

                           = 4600