Plz help i need it asap​

Answer:

-0.3125

Step-by-step explanation:

5k^-4 when k = -2

~Substitute

5(-2)^-4

~Take the exponent

5(-0.0625)

~Multiply

-0.3125

Best of Luck

Answer:

-1.5,0, 0,3 and -4,-5

Step-by-step explanation:

Given :

Customers can  buy bags of windflower bulbs and packages of crocus bulbs. Brenda sold 5 bags of  windflower bulbs and 5 packages of crocus bulbs for a total of $145.

Shayna sold 3  bags of windflower bulbs and 5 packages of crocus bulbs for a total of $121.

To Find :

The cost of one bag of windflower bulbs.

Solution :

Let, cost of one bag of windflower bulbs and crocus bulbs is x and y.

Converting given statement to mathematical equation, we get :

5x + 5y = 145

x + y = 29    ...1)

and

3x + 5y = 121    ...2)

Solving equation 1 and 2, we get :

3( 29 - y ) + 5y = 121

87 - 3y + 5y = 121

2y = 34

y = 17

and x = 12

Therefore, cost of one bag of windflower bulbs is $12 .

Hence, this is the required solution.

Here is a huge hint:

sin(3x) = 3 sin (x) - 4(sin x)^3

sec (x) = 1/sin(x)

Take it from here.

The expression {4 cos(x) - sec(x)} is equivalent to {sin(3x)/sin(x) cos(x)} is proved below.

Given is the equation -

sin(3x)/(sin(x)·cos(x)) = 4cos(x) - sec(x)

We have the following equation -

{sin(3x)/(sin(x)·cos(x)} = 4cos(x) - sec(x)

Now, we know -

sin3x = 3 sin x - 4 sin³x

So, we can write -

(3 sin x - 4 sin³x)/(sin(x)·cos(x) = 4cos(x) - sec(x)

sin(x) (3 - 4sin²x) / sin(x) cos(x) = 4cos(x) - sec(x)

(3 - 4sin²x)/cos(x) = 4cos(x) - sec(x)

(3 - 4sin²x) = cos(x){4 cos(x) - 1/cos(x)}

(3 - 4sin²x) = 4cos²x - 1

3 + 1 = 4cos²x + 4sin²x

4 = 4(cos²x + 4sin²x)

4 = 4

1 = 1

LHS = RHS

Therefore, it is proved that the expression {4 cos(x) - sec(x)} is equivalent to {sin(3x)/sin(x) cos(x)}.

To solve more questions on functions, expressions and polynomials, visit the link below -

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Answer:

Well, if -1/2 and 2 are slopes of 2 lines, then yes, they are perpendicular.

Step-by-step explanation:

The slope of a perpendicular line is the opposite reciprocal of another line.

Normal line's slope: x

Perpendicular line's slope: -1/x

Answer:

[tex]p\leq 56[/tex]

Step-by-step explanation:

Plz mark brainliest!

Answer:

$86.40

80 + 8%= 86.40

Answer:

$86.40..

Step-by-step explanation:

80 + 8%= 86.40

Answer:

The answer is x=12

Step-by-step explanation:

3x - 6 = 30

3x-6+6=30+6

3x=36

To find x divide both sides by 3.

3x/3=36/3

x=12

Answer:

5

Step-by-step explanation:

Answer:

3+2 is 5

Step-by-step explanation:

Thank you for the points! :)

Answer:

D

Step-by-step explanation:

I hope this helps you out!

Answer:

all equilateral triangle’s can be mapped onto each other using dilations.

Step-by-step explanation:

Because you can dilate or increase the size and scale the triangle about a certain point so if you do it correctly, this can be done with just a dilation.

Also an equilateral triangle is defined as a triangle where all the sides are congruent in length. This does not mean that all equilateral triangles are congruent (Do not get confused with D) to each other since size is the undefined variable so all equilateral triangles are proportional which means that they always have a ratio between them depending on the scale factor.

For example, let's say I have an equilateral triangle with a side length of 2, this means that all the sides must have a length of 2, but I can also have an equilateral triangle with a side length of 3, which means that all the sides will have that length for that triangle.

2 ≠ 3, but there is always a conversion factor between the side lengths. In this case a scale factor of 3/2 from the triangle with a side length of 2 to the one with a side length of 3. And a scale factor of 2/3 going from the triangle with a side length of 3 to the triangle with a side length of 2. Because all the sides are congruent, the angles must all be 60° degrees because individual side proportions defined by trigonometry are based on angles and sides. Thus, the angles are also affected due to the change in ratio.

Answer:

4, 7, 10, 13, 16, 19

Step-by-step explanation:

The sequence is going up by 3 simply keep adding 3.

Answer:

Step-by-step explanation:

a=3/4

Answer:

1 is least 2 is greatest

Step-by-step explanation:

Answer:

61x over 3

=16? on a graph

Step-by-step explanation:

Answer:

x ≈ 44.69

Step-by-step explanation:

x² = 30² +21² -2(30)(21)Cos123°

x² = 900 + 411 - 1260cos123°

x² = 1311 - 1260cos123²

~Take square root of both sides

x = √1997.245184111

x ≈ 44.69

Best of Luck!

Answer:

1

Step-by-step explanation:

k=1

the value of k is 1

hope this helps ya!

Answer:

x=20

Step-by-step explanation:

x - 5 = 15

x +5 = +5

x = 20

Answer:

20

Step-by-step explanation:

if u go on your calculator there is a math button click it and go to numrical equations and type it out the first block is the numbers and stuff in front of the equal sign and the second block is after it

Answer:

[tex]y = {60}^{o} [/tex]

Step-by-step explanation:

From the markings in the diagram, both triangles are equilateral and each angle in an equilateral triangle is 60°

Answer: 25

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

2 - -1= 3

5-4 = 1

3/1 = 3

Answer:

the fourth option

Step-by-step explanation:

i googled it

Answer:the 2nd to the very bottom one

Step-by-step explanation:

Don’t wanna tell

Answer:

A

Step-by-step explanation:

Answer:

the 3ed one distributive property

Step-by-step explanation:

Answer:

shade the number line to the left of the open circle

Step-by-step explanation:

x is less than - 2, so it could be any number lower than -2. for example, -3, -4, -5, etc.

Answer:

A. shade the number line to the left of the open circle

Step-by-step explanation:

Answer:

$1729

Step-by-step explanation:

[tex]\frac{100-9}{100} * 1900[/tex]

Answer:

1729

Step-by-step explanation:

1900 divided by 100 is 19

1% equals 19

1 times 9 equals 9

19 times 9 equals 171

171 = 9%

171 - 1900 = 1729

price after a 9% discount is 1729

Answer:

21

Step-by-step explanation:

[tex]\frac{7}{5}[/tex] = [tex]\frac{x}{15}[/tex]

x = 21 chocolate chip cookies.

There are 21 chocolate chip cookies do you bake.

What is mean by Ratio?

A ratio indicates how many times one number contain in another number. The ratio of two number is written as x : y, which is equivalent to x/y. Where, x and y are individual amount of two quantities.

Given that;

The ratio of chocolate chip cookies to oatmeal cookies is 7 : 5.

And,  You bake 15 oatmeal cookies.

Now,

Since, The ratio of chocolate chip cookies to oatmeal cookies is 7 : 5.

Hence, The amount of chocolate chips = 7x

And, The amount of oatmeal cookies = 5x

Here, You bake 15 oatmeal cookies.

Hence, We get;

The amount of oatmeal cookies = 5x = 15

So, we get;

⇒ 5x = 15

⇒ x = 3

So, The amount of chocolate chips = 7x

                                                      = 7 × 3

                                                      = 21

Thus, There are 21 chocolate chip cookies do you bake.

Learn more about the ratio visit:

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Answer:

To find the slope you do rise/run and the slope for 4 is 6/5 the slope for 5 is ZERO slope or 0/5 I know because it goes 0 times up and 5 times to the right.  And for 6 is UNDEFINED slope or 6/0 because it goes 6 times up and 0 time to the sides

Step-by-step explanation:

Answer:

4. 6/5 5.zero 6. undefined

Step-by-step explanation:

so you do y1-y2/x1-x2

4-(-2)/2-(-3)

6/5

5. because it doesn't go up or down

6. because the x doesn't change

Answer:

48

Step-by-step explanation:

800/100=8.

6/100 said yes. so 6*8 which is 48.

Hope this helps plz hit the crown :D

Answer:b

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

A kilogram is the same as 1,000 grams.

HTH :)