Which transformation will always map a parallelogram onto itself?
OA
a 90° rotation about its center
OB.
a reflection across one of its diagonals
OC.
a 180° rotation about its center
O D.
a reflection across a line joining the midpoints of opposite sides

Answer:

In picture

Step-by-step explanation:

Use the given functions to set up and simplify

Answer: D)[tex]\sqrt{3}[/tex]

Step-by-step explanation:

cot(θ) = cos(θ) ÷ sin(θ)

cot(30) = [tex]\frac{\sqrt{3} }{2}[/tex] ÷  [tex]\frac{1}{2}[/tex]

cot(30) = [tex]\sqrt{3}[/tex]

The value of cot30 is √3 if sin30 = 1/2 and cos30 = √3/2 option (D) is correct.

Trigonometry is a branch of mathematics that deals with the relationship between sides and angles of a right-angle triangle.

We have:

sin30 = 1/2

cos30 = √3/2

As we know,

cotA = cosA/sinA

A = 30 degrees

cot30 = cos30/sin30

cot30 = (√3/2)/(1/2)

cot30 = √3

Thus, the value of cot30 is √3 if sin30 = 1/2 and cos30 = √3/2 option (D) is correct.

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Answer:

7x^2 + 2x + 7

Hope this helps :)

Answer:

7x²+2x+7

Step-by-step explanation:

Hope this helps. Plz give brainliest.

Answer: 50

Step-by-step explanation:

3(50)-14=136

Answer:

5

Step-by-step explanation:

25% of 20=5

Answer:

5 items are peeps

Step-by-step explanation:

25% is 1/4 of 100%, so divide 20 (your total # of items) by 4, and you get 5, which is 25% of your 20 spring basket items.

Answer:

Step-by-step explanation:

11.07   Pint

=   6290.652  Milliliter

for an approximate result, multiply the volume value by 568

Answer:

17cm

Step-by-step explanation:

equation:

[tex]2(2x + 1) + 2(x - 5) = 40 \\ x = 8 \\ [/tex]

substitute 8 into

[tex](2x + 1)[/tex]

[tex]2(8) + 1 = 17[/tex]

[tex]lenghth = 17cm[/tex]

Answer:

160 more stickers

Step-by-step explanation:

640 divided by 4 is 160

160 times 5 is 800

800 minus 640 is 160

you need 160 more stickers

Answer:

The fraction of the flour Mrs. Mannng will use for her chocolate chip cookies is 4/9

Step-by-step explanation:

Fraction of Portion

Suppose we have a number n and another number m such as m>n. The portion or fraction of size n of m is given by the quotient n/m.

For example, 3 pieces of cake out of a total of 6 make them a fraction of 3/6 = 1/2 of the whole cake, i.e. half of the total available.

Mrs. Manning needs 1/3 cup of flour to make cookies for the bake sale. She actually has 3/4 cups of flour. Calculate the fraction of needed against the available flour:

[tex]\displaystyle \frac{\frac{1}{3}}{\frac{3}{4}}[/tex]

The division can be easier performed by multiplying by the reciprocal of the denominator:

[tex]\displaystyle \frac{1}{3}\cdot \frac{4}{3}=\frac{1*4}{3*3}[/tex]

[tex]\displaystyle =\frac{4}{9}[/tex]

The fraction of the flour Mrs. Mannng will use for her chocolate chip cookies is 4/9

Answer:

68.5

Step-by-step explanation:

u do 198 divided by 4 then add 19 to the awnser that u got

Answer:

width = 40 feet

Step-by-step explanation:

If w = width, then l = 19 + w

l = 19 + w

2l + 2w = 198

"Substitute 19 + w as l in the second equation"

2(19 + w) + 2w = 198,

38 + 2w + 2w = 198,

38 + 4w = 198,

4w = 198 - 38 = 160,

w = 160/4 = 40 feet

=> Solution: width = 40 feet

The common difference of this Sequence is 12.

In mathematics, a sequence refers to an ordered list of numbers. When working with sequences, there are various concepts and formulas that are used to calculate different aspects of the sequence. One such concept is the common difference. Let's explore what the common difference is and how to calculate it.
What is the common difference?
The common difference in a sequence refers to the difference between any two consecutive terms in the sequence. For example, in the sequence 2, 4, 6, 8, 10, the common difference is 2. We get this value by subtracting the second term (4) from the first term (2) and so on.
How to find the common difference of a sequence?
To find the common difference of a sequence, you need to know at least two terms of the sequence. You can then subtract one term from the other to calculate the common difference.
Let's apply this to the given sequence, which has a first term of 5 and a fifth term of 17. To find the common difference, we can subtract the first term from the fifth term as follows:
17 - 5 = 12
Therefore, the common difference of this sequence is 12.

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Answer: 5: y=7/8x+1

              6: y=-10x

              7: y=2.5x-7

              8: y=1.2x

              9: y=-5x-8

Step-by-step explanation:

There you go. You are welcome.

Answer:

Both answers are correct

Step-by-step explanation:

both y = 1 - 3/2x and y = 1 + -3/2x are correct answers, it is just that y= 1 - 3/2x is the simpler version. Adding a negative number is the same as subtracting a positive.

Answer:

9.3 × 10^-11

Step-by-step explanation:

Answer:

47 minutes

Step-by-step explanation:

Answer:

47 mins hope this helps

Step-by-step explanation:

Answer:

k=-10

Step-by-step explanation:

[tex] - 2k - 24 = 2k + 16[/tex]

[tex] - 2k - 2k = 16 + 24[/tex]

[tex] - 4k = 40[/tex]

[tex]k = 40 \div - 4 = - 10[/tex]

i think this is the answer

Answer:

(2, 15, 21, 24)

Step-by-step explanation:

Domain the x values

Step-by-step explanation:

4x+5<5x+3

4x=-5<5x=-3

x=-5/4<x=-3/5

1.25<0.6

Answer:

The angle with measure 60° is one of those angles that has a well-known cosine value: cos(60°) its C= 1/2.

Step-by-step explanation:

Answer:

(3x + 2)(x-4)

Step-by-step explanation:

3x² - 10x - 8 = 0

(splitting the middle term)

3x² -12x + 2x -8 = 0

3x(x-4) + 2(x-4) = 0

(3x + 2)(x-4) = 0

(3x + 2)(x-4) is the correct answer (option a)

Answer:

20

Step-by-step explanation:

Answer:

yes

Step-by-step explanation:

its rightsss

Answer:

Yes

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

YESYESYESYESYESx85

Answer:

x=$1850

Step-by-step explanation:

Let the original price of the computer model is x.

Last years discount is 20%

We need to find the original price if the computer now costs $1480.

ATQ,

[tex]x-20\%\ \text{of x}=1480\\\\x-\dfrac{20x}{100}=1480\\\\x-\dfrac{x}{5}=1480\\\\\dfrac{4x}{5}=1480\\\\x=\dfrac{1480\times5}{4}\\\\x=\$1850[/tex]

So, the original cost of the computer model is $1850.

Answer:

Here,

slope (m)=-2

y- intercept (c)=-7

Now,

The equation of the line;

or,y=mx+c

or,y= -2x-7

or,2x+y+7=0 is the required equation....

Answer: y = -2x +11

Step-by-step explanation:

You can solve with many ways but I'll do this one instead. Move 12 to the left side and change from positive to negative.

[tex]2x^2-2x-12=0\\[/tex]

Then divide by 2 whole equation.

[tex]\frac{2x^2-2x-12}{2}=\frac{0}{2}[/tex]

Simplify, as we get  [tex]x^2-x-6=0[/tex]

We can either use Quadratic Formula or Factoring the Polynomials. It depends but since the polynomial aren't that hard to factor because it doesn't have that many numbers in value. So using factoring will be faster.

From [tex]x^2-x-6=0[/tex] we can factor as -

[tex](x-3)(x+2)=0\\x-3 =0, x+2=0\\x=3, x=-2\\(x=3,-2)#[/tex]

Thus, the value of x is 3 or -2. So x = 3, -2 is the answer.

Note that we can also use Quadratic Formula to solve the equation, however that will take longer than factoring then solve the equation.

Answer:

B.4  12x-8 would be 12x_-8=40   this is because 12x-8 is congruent to the 40 degree angle. so what -8 is 40?  48   12x_=48   x=4   12x4=48  48-8 is 40

plz let me know if i am wrong mark brainliest if right

Step-by-step explanation:

Answer:

10x + 55

Hope this helps :)

the answer is 40 brainliest plz

Answer:

<A= right

<B= obtuse

<C= acute

<D= obtuse

Step-by-step explanation: