Help me and I'll mark brainiest

Answer:

I'm pretty sure its B sorry if I'm wrong

Step-by-step explanation:

can I get a cookie now

Answer:

The inner circle has a radius of 7 and the outer circle has a radius of 9 and the

formula to get the circumference of a circle is 2pi r where r is the radius. 18-14 =[tex]\boxed{B) 4}[/tex]

Hope this helped and brainliest please

Answer:

A.

Step-by-step explanation:

Hope this helps :)

Answer:

y=-3/2x+2

Step-by-step explanation:

You can find the equation using y=mx+b, where m is the slope and b is the y-intercept. You can see the slope of this line is -3/2, and the y-intercept is 2. If you plug that into the equation, you get y=-3/2x+2

Answer:

D

Step-by-step explanation

Answer:

Step-by-step explanation:

volume of cylinder = πr²h = 54 in³

volume of cone = πr²h/3 = 54/3 = 18 in³

Answer:18

Step-by-step explanation:

Because I have same question and there are different answer choices and the only one that’s there is 18.

Answer:

The time it would take the element to decay to 28 grams is approximately 22.5 minutes

Step-by-step explanation:

The give half life of element X = 6 minutes

The given initial mass of the radioactive element X = 390 grams

The mass of the element X after decay = 28 grams

The function that represent the decay of element X is given as follows here;

[tex]y = a \cdot (0.5)^{\dfrac{t}{h} }[/tex]

Which is of the form;

[tex]N(t) = N_0 \left (\dfrac{1}{2} \right )^{\dfrac{t}{t_{1/2}}[/tex]

Therefore;

h = 6 minutes = The time duration of the half life

a = N₀ = The initial mass = 390 g

N(t) = The final mass = 28 g

t = The time it takes the element to decay

Plugging in the values gives;

[tex]28 = 390 \times(0.5)^{\dfrac{t}{6} }[/tex]

[tex](0.5)^{\dfrac{t}{6} } = \dfrac{28}{390}[/tex]

Therefore;

[tex]\dfrac{t}{6} \times ln\left(0.5} \right) = ln \left(\dfrac{28}{390} \right)[/tex]

t/6 = ln(29/390)/ln(0.5)

t = 6 ×  ln(29/390)/ln(0.5) ≈ 22.496

Given the answer to the nearest tenth of a minute, the time it would take the element to decay to 28 grams, t ≈ 22.5 minutes.

Answer:

25 and 29

Step-by-step explanation:

The coordinate of the point B ( -10 , -6 ) after the dilation of -1/2 is given by the coordinate B ' ( -5 , -3 )

Resizing an item uses a transition called Dilation. Dilation is used to enlarge or contract the items. The result of this transformation is an image with the same shape as the original. However, there is a variation in the shape's size. Dilation transformations ensure that the shape will stay the same and that corresponding angles will be congruent

Given data ,

Let the coordinate of the point be represented as B

The value of B = B ( -10 , -6 )

Now , the dilation factor is given by k = 1/2

So , multiply by 1/2 on the x coordinate and y coordinate of the point B , we get

The coordinate of the point B' after the dilation is

B' = B' ( -10/2 , -6/2 )

So , on simplifying the equation , we get

B' = B' ( -5 , -3 )

Hence , the point after dilation is B' ( -5 , -3 )

To learn more about dilation click :

https://brainly.com/question/13176891

#SPJ1

Answer:

36

Step-by-step explanation:

7n-3y

if n= 6 and y = 2​

7(6)-3(2) = 42-6 = 36

Answer:

36

Step-by-step explanation:

7n-3y (n=6, y=2)

7*6-3*2

42-6

42-6= 36

Answer:

the answer is d.

Step-by-step explanation:

every parallelogram in NOT a rectangle.

Answer: $40

Step-by-step explanation:

The tax rate is 6% on the price of the good bought.

This means that $2.40 is 6% of the price of the helmet before taxes.

Assuming the before tax price is x, the price of the helmet is:

2.40 = x * 6%

x = 2.40 / 6%

x = $40

$40 is the before tax cost.

Answer:

d

Step-by-step explanation: bc i said

The possible error of measurement is half of the smallest unit on the tape measure, which is half an inch, option B is correct.

Two or more expressions with an Equal sign is called as Equation.

The possible error of measurement refers to the smallest unit of measurement on the tape measure.

In this case, the tape measure is marked every half inch, so the smallest unit of measurement is 0.5 inches.

Therefore, the possible error of measurement is also 0.5 inches.

This means that any measurement taken using this tape measure may be off by up to 0.5 inches due to the limitations of the instrument used.

Hence, the possible error of measurement is half of the smallest unit on the tape measure, which is half an inch. Therefore, the answer is B. 0.5 in.

To learn more on Equation:

https://brainly.com/question/10413253

#SPJ2

If a number in parenthesis is directly next to a number without, then the two numbers need multiplied.

-12(5/6)(-2/15) is an example of a double multiplication. But we'll multiply -12 and 5/6 first, then multiply the product by -2/15.

-12x5/6=14 2/5

14 2/5x-2/15=-1 23/25

---

hope it helps

sorry if it doesn't

Answer:

4

Step-by-step explanation:

4 is the rate because if she can make 4 in 10 min the the constant would be 4. By the way this didnt get answered becasue it was posted in spanish!

Have a great day!

Brainliest is appreciated!

- Lea

Step-by-step explanation:

the answer is D

Yes, the lines are parallel.

Parallel lines are coplanar straight lines that do not intersect at any point.

We have,

Line [tex]c[/tex] and [tex]d[/tex], and transversal [tex]e[/tex].

[tex]\angle 2 =\angle 3=\angle6=40^0[/tex],

And, [tex]\angle 1=140^0[/tex]

Now,

[tex]\angle 1=\angle4=140^0[/tex]     (Vertically Opposite Angles)

So,

When a transversal line cuts two lines and sum of angles on the same side of the line is [tex]180^0[/tex] .

i.e. [tex]\angle6+\angle4=180^0[/tex]

[tex]140^0+40^0=180^0[/tex]

[tex]180^0=180^0[/tex]

So, sum of [tex]\angle6\ and\ \angle4[/tex] is [tex]180^0[/tex], that means line are parallel.

Hence, we can say that Yes, the lines are parallel.

To know more about parallel click here

https://brainly.com/question/16701300

#SPJ3

Answer:

Use cosine

Answer:

Loggerhead turtles live and migrate around the Atlantic Ocean. Which of the following is an adaptation of Loggerhead turtles? *

Step-by-step explanation:

Answer:

PS:Can I be brainliest

habe a nice day

Best regards

Step-by-step explanation:

 using our website, you accept our use of cookies.    OK

6 times what equals 84?

6 times what equals 84? In other words, what do you multiply by 6 to get 84? If "x" is "what" in the sentence, "6 times what equals 84?", then the equation to solve the problem is as follows:

6 • x = 84

Which can be written as:

6x = 84

To solve the equation above, we need to remove the 6 on the left side to make the x alone. To do that, we divide both sides by 6.

6x/6 = 84/6

6x/6 is x and 84/6 is 14 which means our equation will look like this:

x = 14

Thus, the answer to "6 times what equals 84?" is 14.

Answer:

14

Step-by-step explanation:

cause 84 divided by 6 is 14,then do 14 times 6 and its 84.

Answer:okayyy Ma’am

Step-by-step explanation:

Answer:

(2,1)

Step-by-step explanation:

x = 7-3/2= 4/2= 2

y = 8-6/2 = 2/2 = 1

Answer:

The exponential equation is y = -2×(1/2)^x

Answer: what he said

Step-by-step explanation:

Answer:

x = 10

Step-by-step explanation:

By looking at the picture, I can tell the angle of the 3x is also 30 degrees.

This means 3x = 30.

When you solve for x by dividing each side by 3, you result with the answer of x = 10.

To check you work, plug in 10 for x to recieve 30 degrees again.

Answer:

A) 15

Step-by-step explanation:

PEMDAS

20 / 4 + (6 * 2) - 2

take out the parenthesis which is P

20 / 4 + 12 - 2

there is no E

the go the rest of the way MDAS

5 + 12 - 2

17 - 2

15

Answer:

15 (A)

Step-by-step explanation:

ok first off you have to remember PEDMAS parentheses,exponents,division.multiplication,addition.subtraction(D and M are from left to right, as well as A and S.)

so the first thing you have to do is 6*2 because it is in the parentheses

this equation turns into

20/4+12-2

now do the division

5+12-2

now you have to add because it is left to right (it doesn't really matter what you o first in this situation)

17-2

15 (A)

hope this helps! have a nice day :)