Help me find the surface area of this. -10 points so please answer!!!

Answer:

Choice B is correct

Step-by-step explanation:

We apply the rule of exponents;

[tex]a^{-b}=\frac{1}{a^{b}}[/tex]

[tex]7^{-2}=\frac{1}{7^{2}}=\frac{1}{49}[/tex]

Final answer:

The quadrilateral with two pairs of parallel sides, equal side lengths, and no right angles is a rhombus. It can be thought of as a 'pushed over' square without right angles.

Explanation:

The student is asking about a type of quadrilateral that meets certain criteria: it has two pairs of parallel sides, all sides are of equal length, and it has no right angles. A rectangle is a quadrilateral with four right angles, hence it does not meet the criteria since the question specifies no right angles. Considering the traits listed, the quadrilateral in question is a rhombus. A rhombus has all sides of equal length and two pairs of parallel sides, but unlike a square, it does not necessarily have right angles. To visualize, we can think of a 'pushed over' square – if the angles are all acute or obtuse rather than right angles, it qualifies as a rhombus.

Answer:F

Step-by-step explanation:

Due to the fact the ratio is 14 to 6, 14 to 6 is basically close to 3/4.

It is 5892 and i know it has to be or I guess I am wrong (i don’t care) hahahaha

Answer: Variables are usually written in lower-case letters.

Step-by-step explanation:

For example, it's "9x +10" not "9X +10"

Answer:

Part a:[tex]f(x)=-2(x+1)^2+8[/tex]

Part b: Maximum value

Step-by-step explanation:

Part a.

The given function is [tex]f(x)=-2x^2-4x+6[/tex].

We need to complete the square to obtain the vertex form

[tex]f(x)=-2(x^2+2x)+6[/tex]

Add and subtract the square of half the coefficient of x.

[tex]f(x)=-2(x^2+2x+(1)^2)--2(1)^2+6[/tex]

[tex]f(x)=-2(x^2+2x+1)+2+6[/tex]

The quadratic trinomial within the parenthesis is now a perfect square

[tex]f(x)=-2(x+1)^2+8[/tex]

The vertex form is [tex]f(x)=-2(x+1)^2+8[/tex]

Part b

Comparing [tex]f(x)=-2(x+1)^2+8[/tex] to [tex]f(x)=a(x-h)^2+k[/tex], we have a=-2.

Since a is negative the vertex is a maximum point.

Hence the function has a maximum value

Answer:

D

Step-by-step explanation:

It's one of each or not both tho:)

Answer:

Option C. is the correct answer.

Step-by-step explanation:

Since in the given Venn diagram "Blue circle" is contained in a "purple circle".

Blue circle represents Equilateral triangles and purple color circle represents isosceles triangle.

Since by this Venn diagram, equilateral triangles are contained in isosceles triangle then we can conclude that all equilateral triangles are isosceles triangle.

Therefore, option C. if shape is an equilateral triangle, then it is an isosceles triangle is true.

Answer:

F

Step-by-step explanation:

Final answer:

The three equivalent expressions to (a^2-16(a+4)) are: (a-4)^3, (a+4)^2(a-4), and (a-4)(a+4)(a+4).

Explanation:

The expression (a^2-16(a+4)) can be simplified by expanding the terms and combining like terms. First, apply the distributive property by multiplying -16 by (a+4), giving -16a-64. Then, multiply a^2 by -16 to get -16a^2. Finally, combine like terms to get -16a^2 - 16a - 64.

Therefore, the three equivalent expressions to (a^2-16(a+4)) are:

(a-4)^3

(a+4)^2(a-4)

(a-4)(a+4)(a+4)

Answer:

111 months old.

Step-by-step explanation:

you first divide 12 by four giving us 3.

then times 9 by 12. that gives us 108.

then add 108 + 3 to give us the final results.

Hope that helps!

(if you could rate/thank me that would be amazing!)

111 months old.

A year is 12 months.

9x12=108

Then add 3 to 108.

= 111

8 because the begging of the box is 8 away from the end of the box

Answer:

C.8 mark me as the best

Step-by-step explanation:

Answer:

-13 + j*2

Step-by-step explanation:

The additive inverse of a complex number x = a +j*b

is a number y, such that

x + y = 0

This means that

y = -x = - a - j*b

Therefore

The additive inverse of 13 - j*2 is equal to

-(13 - j*2) = -13 +j*2

Answer:

the answer is D because their are 2 points that collide

Step-by-step explanation:

that's why I chose the answer d

Correlation in statistics is the relationship between two variables that can be positive, negative, or non-existent. Positive correlation means both variables move in the same direction, while negative correlation means they move in opposite directions. 'Prime correlation' is not a recognized term in statistics.

In statistics, the term correlation refers to the statistical relationship between two variables. A correlation can be positive, negative, or there might be no correlation.

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It's hard to explain, but theres a trick to it too.

Multiply the total number of freshman by the percentage:

754 x 0.78 = 588.12

Since you cant have 0.12 of a person, round up to 589 people.

Approximately 589 of the freshmen at the high school would be expected to have internet access at home.

We are given that 78% of high school freshmen have internet access at home. This percentage can be expressed as a fraction or a decimal for calculation purposes. In this case, we will use the decimal form, which is 0.78.

The total number of freshmen at the high school is given as 754.

To find the number of freshmen with internet access, we multiply the total number of freshmen by the percentage (in decimal form) that represents those with internet access.

The calculation is as follows:

 Number of freshmen with internet access = Total number of freshmen × Percentage with internet access

 Number of freshmen with internet access = 754 × 0.78

Performing the multiplication:

 Number of freshmen with internet access = 588.92

In conclusion, about 589 of the 754 freshmen at the high school would be expected to have internet access at home.

Answer:

Step-by-step explanation:

Inverse Variation. Since k is constant, we can find k given any point by multiplying the x-coordinate by the y-coordinate. For example, if y varies inversely as x, and x = 5 when y = 2, then the constant of variation is k = xy = 5(2) = 10.

Answer:

8:5

Step-by-step explanation:

32:20

8:5

Answer: (A) The root at point P may be .

Step-by-step explanation:edge2022

Answer:

c 5/48

Step-by-step explanation:

Answer:

5+√97/4

Also 5-√97/4

Step-by-step explanation:

The Quadratic formula is x=-b+-√b^2-4ac/2a

This means that we should plug the values for A B AND C into the formula

We can work out that

A = 2

B=-5

C=-9

Once we have put these into the formula we get

5+√97/4 (all over 4) aka 3.71

Also 5-√97/4 (all over 4) aka -1.21

Answer:

[tex]\large\boxed{x=\dfrac{5-\sqrt{97}}{4}\ or\ x=\dfrac{5+\sqrt{97}}{4}}[/tex]

Step-by-step explanation:

[tex]\text{Let}\ ax^2+bx+c=0\\\\\text{The quadratic formula:}\\\\\Delta=b^2-4ac\\\\\text{If}\ \Delta>0,\ \text{then the equation has two solutions}\ x=\dfrac{-b\pm\sqrt\Delta}{2a}\\\\\text{If}\ \Delta=0,\ \text{then the equation has one solution}\ x=\dfrac{-b}{2a}\\\\\text{If}\ \Delta<0,\ \text{then the equation has no solution}\\==================================[/tex]

[tex]\text{The equation}\ 2x^2-5x-9=0\\\\a=2,\ b=-5,\ c=-9\\\\\Delta=(-5)^2-4(2)(-9)=25+72=97>0\\\\\sqrt\Delta=\sqrt{97}\\\\x_1=\dfrac{-(-5)-\sqrt{97}}{2(2)}=\dfrac{5-\sqrt{97}}{4}\\\\x_2=\dfrac{-(-5)+\sqrt{97}}{2(2)}=\dfrac{5+\sqrt{97}}{4}[/tex]

The graph of a quadratic equation (a parabola) opens upwards or downwards depending on whether the coefficient of the x^2 term is positive or negative, respectively. The vertex of the parabola corresponds to the function's extreme point (maximum or minimum), and its coordinates are calculable with the formula (-b/2a, f(-b/2a)).

The graph of a quadratic equation, otherwise known as a parabola, opens upwards if the coefficient of the x^2 term is positive and opens downwards if it is negative. The maximum or minimum point of the parabola is known as the vertex. In a standard form quadratic equation y = ax^2 + bx + c, the coordinates of the vertex are given by the equation (-b/2a, f(-b/2a)).

So for example, for the quadratic equation y = 2x^2 + 3x + 1, the parabola would open upwards, and the vertex would be at (-3/4, f(-3/4)), which would be the minimum point of the parabola.

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Answer:

$246

Step-by-step explanation:

The price of the product is $390, after 6 months the price is marked down by 10% which is $39 so the total will be $351. After another 6 months the price is marked down again by 30%, which is $105 and 3 cents ($105.3). For a total of $245 and 7 cents ($245.7).  To round the number you only need to look at the number after the decimal which is 7 in this case. Any number bellow 5 counting 5 in it, will stay the same number, any number above 5 without counting 5 will be the next number. So $245.7 rounded to the nearest dollar will be $246.

Hope it was helpful ^^ <3

Good Luck

Answer:

  x ≈ 42°

Step-by-step explanation:

Label the vertices of the quadrilateral shown at the upper left in you diagram A, B, C, and D, starting at the lower left. Label the center point X. Then the red line is CX and the lower two line segments are CD and DA. (A, C, D, and X are not coplanar.)

Angle D of triangle ACD is the interior angle of a regular pentagon, so measures 108°. That means angle ACD measures (180° -108°)/2 = 36°. If we label the midpoint of segment AC point Y, then the length of segment CY is ...

  CY = CD·cos(36°)

Now triangle BCD is an equilateral triangle, so segment CX will have a length corresponding to the altitude of that triangle, CD·√3/2. Shifting our focus to the triangle AXC, we find that angle XCY will satisfy the relation ...

  cos(XCY) = CY/CX = CD·cos(36°)/(CD·√3/2) = (2/)√3·cos(36°)

Angle x is the exterior angle of triangle AXC that is opposite the two equal interior angles XCY and XAY. Hence its value is double that of angle XCY.

  angle x = 2·arccos((2/√3)·cos(36°)) ≈ 2·20.905° ≈ 41.81°

  angle x ≈ 42°

_____

Comment on the angle

The icosahedron is the only Platonic solid with a dihedral angle more than 120°. It is about 138.19°, the supplement to angle x.

Comment on point labels

It may help to label the points in the 3-d version of the figure. Then you can see that segment AC is a line through the interior space of the icosahedron.

Answer: E. 150 square units.

Step-by-step explanation:A polygon is figure with at least 3 straight or definite sides or typically 5 or more straight sides.

Here the polygon we are given is a rectangle.

We know that,

Area of a rectangle = l x w

so we need to measure the length and width of the rectangle to find its area.

If we look closely, we can see the length of the rectangle above the x-axis is 8 units and the length below the x-axis 7 units which makes a total og 15 units.

Answer:

D) 150 square units

Step-by-step explanation:

Use the distance formula: d = (x2 - x1)2 + (y2 - y1)2

A = L x W = 15/-2x 5/-2

= 150

Answer:

-b + 5

Step-by-step explanation:

translation

Final answer:

The y-coordinate of point S after reflection across the x-axis and translation is -b, as reflection across the x-axis changes the sign and translation to the right does not affect the y-coordinate.

Explanation:

The student is asking to find the y-coordinate of a point S after a reflection across the x-axis and a translation 5 points to the right of a point R with coordinates (a,b).

The reflection of the y-coordinate across the x-axis changes its sign, so the reflected y-coordinate of point R would be -b. Translating a point to the right does not affect the y-coordinate, so the y-coordinate of point S would remain -b after this translation. Therefore, the expression that represents the y-coordinate of S is simply -b.

Answer:

50

Step-by-step explanation:

Adding up 20, 30, 40, 50, 60, 70, 80, we get 350.  There are 7 numbers in this set, so divide this 350 by 7.  We obtain the mean, 350/7 = 50 (Answer B)

Answer:

Your answer would be: B) 50

To find the mean, you add all the numbers in the data set and divide them by how many numbers there are, which in this case it is 7.

Answer:

$520

Step-by-step explanation:

We first find the interest;

400*2*15/100=4*2*15

                      =$120

Total=$120+$400

        =$520

Answer:520

Step-by-step explanation:

above correct

Hi!!! So to do this problem, you need to find the mean values for each sample. I will walk you through finding the mean of sample 1: first you want to add all of the values for sample 1, which are 4,5,2,4 and 3. Once you add those values you get 18. Then you must divide that 18 by the number of terms you added. The numbers you added were 4,5,2,4 and 3 like I said earlier which is 5 numbers. You divide 18 by 5 to get your mean, which is 3.6

Answer: (B) Sample 2

sample 1 mean = 3.6

sample 2 mean = 4.2

sample 3 mean = 3.8

sample 4 mean = 4

Answer: 696

Step-by-step explanation:

58 times 12

Answer:

696 seeds

Step-by-step explanation:

12*58