20 points please help

What is o?

Answer:

12y

Step-by-step explanation:

ill give you more websites if you need them!

Answer:

-1x - 5

Step-by-step explanation:

Okay, so I believe you need to find what 3x + 5 and -4x - 10 equals?

For this you have to add like terms:

3x - 4x = -1x

5 - 10 = -5

If this isn't it just comment and I'll edit my answer! :)

Answer:

that would be 60 yards

Step-by-step explanation:

3 feet in 1 yard, so divide 180 by 3 and you get 60 yards

Answer:

Step-by-step explanation:

As an example, iodine-131 is a radioisotope with a half-life of 8 days. It decays by beta particle emission into xenon-131. After eight days have passed, half of the atoms of any sample of iodine-131 will have decayed, and the sample will now be 50% iodine-131 and 50% xenon-131.

50 grams to 25 grams is one half-life. 25 grams to 12.5 grams is another half-life. So, for 50 grams to decay to 12.5 grams, two half-lives, which would take 36 days total, would need to pass. This means each half-life for element X is 18 days.

Answer:

After 8 hours or 2 half-lives, you will have 972 grams of ruthenium left.

Step-by-step explanation:

hope this helps. . . <3

Answer:

15 pieces

Step-by-step explanation:

Hope it helps!

Answer:

15

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Givens

L = 18 inches

W = 1 foot = 12 inches

H = 14 inches

Surface Area = 2 * L*w + 2*L * h + 2*w*h

Surface Area = 2 * 18*12 +2*18*14 + 2*12*14 all in linear inches

Surface Area = 432 + 504 + 336                  all in square inches

Surface Area = 1272  in^2

Step-by-step explanation:

2+2 = 4

4^2 = 16

16/4 = 4

4 + 3 = 7

Answer:

4.5

Step-by-step explanation:

(2+2^2) ÷ 4+3

I will use PEMDAS (parenthesis, exponents, multiplication, division, addition, and subtraction)

Calculate 2 to the power of 2 and get 4. 2x2=4

(2+4)÷4+3

Add 2 and 4 to get 6. 2+4=6

6÷4+3

divide 6 by 4 to get 1.5 6÷4= 1.5

1.5+3

add 1.5 to 3 to get 4.5. 1.5+3= 4.5

x=81

Step-by-step explanation:

[tex] → \sf \frac{65 + 73 + 76 + x}{4} = 73.75 \\ [/tex]

[tex]→ \sf65 + 73 + 76 + x = 295 \\[/tex]

[tex]→ \sf x = 81[/tex]

Answer:

-4

Step-by-step explanation:

0.1z = 0.2(z + 2)

0.1z = 0.2z + 0.4

-0.1z = 0.4

z = -4

Answer:

z = -4

Step-by-step explanation:

Distributive Property: a(b + c) = ab + ac

1. Distribute

0.1z = 0.2(z) + 0.2(2)

0.1z = 0.2z + 0.4

2. Subtract 0.2z from both sides

0.1z - 0.2z = 0.2z - 0.2z + 0.4

-0.1z = 0.4

3. Divide both sides by -0.1 to isolate the variable

-0.1z ÷ -0.1 = 0.4 ÷ -0.1

z = -4

Learn more about the distributive property here:

brainly.com/question/27445861

Answer:

i = sqrt(-1)

Step-by-step explanation:

positive i would probably be undefined as well, and just positive sqrt(-1)

Answer: he will be able to make 19 full pieces

Step-by-step explanation:

1. Start off by making 7 feet into 84 inches so the measurements can match.

2. Add 4/14 inches and the 1/8 a inch together so you know how much is being taken off 84 inches. The amount will be 35/8 inches.

3. Divide 84 inches by 35/8 inches = 19 1/5

4. The whole number of the answer will be how many boards you can make from the board.

Multiply total centimeters by kilometers per centimeters

7.5 x 15 = 112.5

Answer: 112.5 kilometers

Answer:

112.5 kilometers between the 2 cities

Step-by-step explanation:

sounds fake but in miles its 69.9

Answer:

1/(1/8)= 8 cubes

Step-by-step explanation:

Volume of a rectangular prism is length × height × width

Length=7 1/2

Width= 15 1/2

Height=12

Volume of the prism is therefore:

7 1/2×12×15 1/2= 1395cm3

No of cubes with edge length 1/2 to fit into the prism will be:

Volume of cube is L*W*H

1/2*1/2*1/2= 1/8cm3

Therefore the no of cubes to fit into the Prism will be:

1395/(1/8)= 11160 cubes.

If one was stuck,the number of 1/2 edge length cube to fit into 1cm will be:

Answer: 1 every 6 times thrown

Step-by-step explanation:

Co

Answer: 18.75.

Step-by-step explanation:

Answer:

Mark me as brainlist

Step-by-step explanation:

The rate of change of one quantity in a system often causes other quantities to change. By knowing the relationship between the different quantities, we may be able to find the relationship between their rates of change.

Answer:

y=1

x=1/5

Step-by-step explanation:

Answer:

118°

Step-by-step explanation:

When two parallel lines are cut by a tranversal, then the exterior angles are supplimentary and the corresponding angles are congruent.

Therefore the angle above (15x - 17)° is also (5x + 17)° and the angle below (5x + 17)° is also (15x - 17)°.

Angles on a straight line adds up to 180°. So to know the measure of the larger angle we must both equations and equal it to 180° to find x in order to know the larger angle.

(5x + 17) + (15x - 17) = 180

5x + 15x + 17 - 17 = 180

20x = 180

20x/20 = 180/20

x = 9°

Nkw let's substitute x = 9 into the equations

5x + 17 =

5(9) + 17 =

= 62°

15x - 17 =

15(9) - 17 =

= 118°

Both equations should add up to be 180°.

Therefore the measure of the largest angle is 118°.

Answer:

hope it helps you.......

The required slope of the line passing through the points is m = 9/2. Option A is correct.

Given that,
To determine the slope of the line that passes through the points (2, −3.5) and (4, 5.5).

The slope of the line is a tangent angle made by line with horizontal. i.e. m =tanx where x in degrees.

Here,

The slope of the line passing through two points is given by,
m = (y₂ - y₁) /  (x₂ - x₁)
Substitute value in the above equation
m= 5.5 +3.5 / 4 - 2
m = 9 / 2

Thus, the required slope of the line passing through the points is m = 9/2. Option A is correct.

Learn more about slopes here:

https://brainly.com/question/3605446

#SPJ5

Answer:

c = 6

Step-by-step explanation:

52 = 7 + 5(c = 3)

52 = 7 + 5c + 15

52 = 22 + 5c

-5c = 22 - 52

-5c = -30

c = [tex]\frac{-30}{-5}[/tex]

c = 6

[tex] \frac{35 - 3}{20 - 4} = \\ [/tex]

[tex] \frac{32}{16} = \\ [/tex]

[tex]2[/tex]

d = 2

__________________________________

t(4) = t(1) + 3d

3 = t(1) + 3×2

3 = t(1) + 6

t(1) = 3 - 6

t(1) = - 3

__________________________________

t(n) = t(1) + (n-1)(d)

t(32) = - 3 + 31×2

t(32) = -3 + 62

t(32) = 59

Answer:

x = 4.2/3

Step-by-step explanation:

Answer:

A: Nine weeks and one day

Answer:

9 weeks and 3 days

Step-by-step explanation:

22 x 3 = 66

66 divided by 7 (days in the week) = 9.42 (9 = weeks)

9 x 7 = 63

66-63 = 3 (days)

Answer:

15

Step-by-step explanation:

.15/100

Answer:

It will be needed 32 walking students to reach the goal

Step-by-step explanation:

1000 - 232

768/24= 32

Answer:

32 walkers.

Step-by-step explanation:

$1000 minus the $232 we have already raised from the bake sale to determine the amount we need to raise from the walk-a-thon.

1000 - 232 = 768.

So in order to raise 768, and we are raising $24 per person we will divide to figure out how many people we need.

768 / 24 = 32.

You can check this answer by multiplying 24 and 32, and then adding the 232 to the product.

24 x 32 = 768

768 + 232 = 1000

Answer: I cant see the question that you asked  putting it on the?

Step-by-step explanation:

Answer:

it would be 6.5% tax the reason i know this is becuase its the same tax rate thats in my state :) glad i could help

Step-by-step explanation:

Answer:

206 is the answer

Step-by-step explanation:

Like and give 5 star rating

Answer:

5 courage 1 classic

Step-by-step explanation:

So you already have 5 of the courage’s. Then, one fifth of them is 5/5=1. So 1 classic

You mention circles, so I assume the missing symbols are plus signs.

The first circle has equation x² + y² = 64 = 8², so it's centered at the origin and has radius 8. In polar coordinates, we take x = r cos(θ) and y = r sin(θ). Then this circle's equation is

(r cos(θ))² + (r sin(θ))² = 64

r² (cos²(θ) + sin²(θ)) = 8²

r = 8

Complete the square in the second circle's equation to determine its center and radius:

x² - 8x + y² = x² - 8x + 16 + y² = 16   ⇒   (x - 4)² + y² = 4²

so the second circle is centered at (4, 0) with radius 4. In polar coordinates, this equation becomes

(r cos(θ) - 4)² + (r sin(θ))² = 16

r² (cos²(θ) + sin²(θ)) - 8r cos(θ) + 16 = 16

r² - 8r cos(θ) = 0

r - 8 cos(θ) = 0

r = 8 cos(θ)

Determine where these two circles intersect:

8 = 8 cos(θ)

cos(θ) = 1

θ = arccos(1) + 2nπ

θ = 2nπ

where n is any integer. So both circles intersect once at (8, 0), which means they are tangent to one another, and since the second circle's radius is smaller, it must lie completely within the larger one.

The region between the two circles is the set

R = {(r, θ) : 0 ≤ θ ≤ π/2 and 8 cos(θ) ≤ r ≤ 8}

The area of R is given by the double integral,

[tex]\displaystyle \iint_R dA = \int_0^{\frac\pi2} \int_{8\cos(\theta)}^8 r \, dr \, d\theta[/tex]

or the single integral

[tex]\displaystyle \iint_R dA = \frac12 \int_0^{\frac\pi2} \left(64 - 64\cos^2(\theta)\right) \, d\theta[/tex]

Recall the half-angle identity for cosine:

cos²(x/2) = (1 + cos(x))/2

Then the area is

[tex]\displaystyle \iint_R dA = 16 \int_0^{\frac\pi2} \left(1 - \cos(2\theta)\right) \, d\theta[/tex]

[tex]\displaystyle \iint_R dA = 16 \left(\theta - \frac12 \sin(2\theta)\right) \bigg|_0^{\frac\pi2}[/tex]

[tex]\displaystyle \iint_R dA = \boxed{8\pi}[/tex]