What are x and y used for?

Answer:

{-12,12}

Step-by-step explanation:

it looks like that I guess

Answer:

55

Step-by-step explanation:

If they're complementary, that means they add up to 90 so:

x + x - 20 = 90

Then, solve.

[tex]2x - 20 = 90\\2x = 110\\x= 55[/tex]

Answer:

Equation: p - 3 = 17

Weight of basket of apples = 20 pounds

Step-by-step explanation:

Given that:

Weight of basket of apples = p

Weight of apples eaten by Liang = 3 pounds

Weight of left apples = 17 pounds

According to given statement.

p - 3 = 17

Adding 3 on both sides

p - 3 + 3 = 17 + 3

p = 20 pounds

Hence,

Equation: p - 3 = 17

Weight of basket of apples = 20 pounds

Answer:

P = k*q*r

Step-by-step explanation:

P = kqr

7 = k*2*1.5

7 = 3k

k = 7/3

b. P = kqr

= 7/3*4*6

= (7*4*6)/3

= 168/3

= 56

P = 56

c. P = kqr

1 = 7/3*q*3

1 = (7*q*3)/3

1 = 21q/3

Cross product

1*3 = 21q

3 = 21q

q = 3/21

= 1/7

q = 1/7

d. P = kqr

5 = 7/3*8*r

5 = (7*8*r)/3

5*3 = 56r

15 = 56r

r = 15/56

Answer:

78.54 cm2

Step-by-step explanation:

A = pi ·  r squared

A = 78.54 cm2

Answer:I’m trying to find that too

Step-by-step explanation:

Answer:

a. 22 ft 5in

b. 24 ft 4in

c. 2 ft 8 in

Step-by-step explanation:

all you need to do is add and substract them and then chance the units.

Answer:

-0.125 or -1/8

Step-by-step explanation:

switch the numerator and denominator and then divide. So, -8/1 should switch to 1/-8, and then you divide the two to get, your answer, -0.125

Sorry im a little late but here's how i did it.

Hope this helps! :)

Answer:

2.8x - 7.56

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)

Answer:

0.23333333333

Step-by-step explanation:

Answer:

7/30

Step-by-step explanation:

first make them both have common denominator

9/10= 27/30

2/3=20/30

they both go into 30 then subtract 27/30 and 20/30

Answer:

x=65

Step-by-step explanation:

solve for the angle not marked⇒ 180-147=33

add known angles⇒ 33+82= 115

subtract total known value from 180**⇒ 180-115=65

**all interior angles of a triangle must add up to 180°

Answer:

32, 64, 128

Step-by-step explanation:

Let us start by looking at the geometric progression. A geometric progression multiplies each number by a constant, which we can name r, to get the next term. Let us find this constant:

16÷8=2

8÷4=2

Both expressions confirm that our r, the constant, is indeed 2.

To find the next few terms, we simply multiply by r:

1. 16r=16×2=32

2. 32r=32×2= 64

3. 64r= 64×2 = 128

I hope this helps! Please let me know if you have any further questions :)

Answer:

10,800

Step-by-step explanation:

1. Multiply the ones

2. Multiply the tens

3. Multiply the hundreds

4. Multiply the thousands

5. Multiply the ten - thousands

Follow the steps and you will get the answer!

Answer:

Step-by-step explanation:

D

Answer:

i need a photo this makes no sense

Step-by-step explanation:

Answer:

To see if multiple ratios are proportional, you can write them as fractions, reduce them and compare them. If the reduced scores are all the same, you have a proportion.

Answer:

It's (very roughly) 12 hours from one high tide to the next, and of course the same for low tides. That's because the tides produced when the Moon is directly overhead or in the opposite direction are the same. Same with two low tides, since there are two tides a day (both low and high).

Answer:

Because the Earth rotates through two tidal bulges every lunar day, coastal areas experience two high and two low tides every twenty-four hours and fifty minutes. High tides occur twelve hours and twenty-five minutes apart. It takes six hours and 12.5 minutes for the water at the shore to go from high to low, or from low to high.

Step-by-step explanation:

because I said

please mark me brainliest

Answer:

Let's use the variable y to represent the number of years passed since the first year.

The population on the first year (y = 0) was 800

The population in the second year (y = 1) was 600.

The ratio in which the population decreased can be calculated as:

R = 600/800 = 0.75

This means that 600 is the 75% of 800, this also means that between the first year and the second year, the population decreased by the 25%

Now let's look at the ratio between the second and third year (y = 2), the population the third year was 450

Now the ratio is:

R = 450/600 = 0.75

Same as before, then we already can see that the population will decrease by 25% each year.

The generic exponential decay equation is:

f(y) = A*(1  - r)^y

where:

A = initial population, in this case, is 800

y = our variable, in this case, represents the number of years

r = the amount that decreases per each unit of our variable, this must be written in decimal form. In this case, we know that the population decreases by 25% each year, and 25% written in decimal form is 0.25

Also, (1 - r) = R, where R is the ratio we found earlier.

To do this, we just divide 25% by 100% to get (25%/100% = 0.25)

Then our equation will be:

f(y) = 800*(1 - 0.25)^y

f(y) = 800*( 0.75)^y

1) We want to predict when the population will be 200.

to do this, we set:

f(y) = 200 = 800*( 0.75)^y

and solve it for y.

(200/800) = 0.75^y

(1/4) = 0.75^y

Now we can use the relationship:

Ln(a^x) = x*ln(a)

Then let's apply Ln( ) in both sides to get

ln(1/4) = y*ln(0.75)

ln(1/4)/ln(0.75) = y = 4.8 years.

This means that 4.8 years after the first year, the population will be around 200.

2) The population in the 25 th year (this is 24 years after the first one, so we take y = 24) is:

f(24) = 800*(0.75)^(24) = 0.80

Around this point, we will have no more sunfish in the lake.

Answer:

A.

Step-by-step explanation:

Answer:qe

Step-by-step explanation:

The volume of the baseball is 14 in³.

The volume of a sphere can be calculated using the formula:

V = (4/3)πr³

where V is the volume and r is the radius of the sphere.

We have,

Diameter = 3 inch

radius = diameter / 2 = 3 / 2 = 1.5 inches

Substituting the radius into the volume formula:

V = (4/3) π (1.5)³

V ≈ (4/3) x 3.14 x (1.5)³

V ≈ 14.13 in³

Thus, the volume of the baseball is 14 in³.

Learn more about Volume here:

https://brainly.com/question/21623450

#SPJ6

Answer:

20.487%

Step-by-step explanation:

divide the second number by the first. then do one minus that number

Answer:

its 2.38 ounces in each bag

Step-by-step explanation:

u add all of he numbers then divide by 25. your welcome

Answer:

The unit rate is 4.5 days per trip

Step-by-step explanation:

So the equation would be 90 divided by 20

Simplified it is the same thing as 9 divided by 2

90 divided by 20 is 4.5

Answer:

4.5/1

Step-by-step explanation:

First, I found that 10 was the first factor or whatever I could find, so our new ratio is:

9/2

This is obviously not the unit rate, but if we divide by 2 we get:

4.5/1

So our unit rate is 4.5/1

Answer:

104 units

Step-by-step explanation:

Given

Shape: Rhombus

[tex]JL = 48[/tex]

[tex]KM = 20[/tex]

Required

Determine the perimeter

The given parameter are the diagonals of the rhombus.

The perimeter (from diagonals) is calculated as thus:

[tex]P = 2\sqrt{(JL)^2 + (KM)^2}[/tex]

Substitute values for JL and KM

[tex]P = 2\sqrt{48^2 + 20^2}[/tex]

[tex]P = 2\sqrt{2304 +400}[/tex]

[tex]P = 2\sqrt{2704}[/tex]

[tex]P = 2 * 52[/tex]

[tex]P = 104[/tex]

Hence, the perimeter is 104 units

Answer:

Yes, it is a function

Step-by-step explanation:

the definition of a function is "a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output." Our input is represented by x, or the first number in the parentheses, and our output is y, or the second number in the parentheses. Because each x value had exactly one output, or y, it is a function

Answer:

x = 9 and up

Step-by-step explanation: