Mathematics High School

Jordan went to shelter to adopt a dog. There were 10 brown dogs and 10 black dogs. Jordan picked a dog, went home, then decided he wanted to go back and adopt another dog. What is the probability that he picked two black dogs?

A. 10/20
B. 9/19
C. 1/2
D. 9/38

Answers

Answer 1

B. 9/19

Step-by-step explanation:

there was 20 dogs in total he took 1 black dog now 19 in total, now 9 black dogs and 10 brown dogs so one less probability of black dogs so 9 black dogs and 10 brown dogs so 9/19

Related Questions

हल गर्नुहोस् (Solve):
3X+1 + 3x = 108
सरल गर्नुहोस् (Simplify):
1
1
+
(a - b) (a-st 16-allo​

Answers

107/6

Step-by-step explanation:

3x+1+3x=108

6x=108-1

6x=107

x=107/6

Which operation will isolate the variable?

17b = 54 :

addition

subtraction

multiplication

division

Answers

Answer:

Division

Step-by-step explanation:

here's your process

=>. it is your equation 17b = 54

=> now divide 17 on both side

=> then we get 17b/17 = 54/17

=> hence , we get b = 54/17

=>now b is isolated by the method of division

hope it helps

Leanna opens a savings account with an initial balance of $100. She then deposits $50 each month. Write an equation to explain the relationship between the amount of money in the account, a, and the number of months since Leanna opened the account, m.


HELP ME

Answers

Answer:

7

Step-by-step explanation:

450-100=350

350/50=7

7 months

Solve
5x+3y=32
2x+4y=10

Answers

i send u a picture of how i solve it. i hope this can help u

Help please
Brainiest answer to whoever is first

Answers

Answer:

75

Step-by-step explanation:

The answer is 66 because you add every side.

PLEASE HELP ASAP!!
The diameter of each of the three circular lights in a traffic signal is 7 inches. In this activity, you will find the total area of the three lights.

Part A
Each circular light has a diameter of 7 inches. What is the radius of each light?

Answers

Answer:

The radius of the circle is 3.5 inches.

Step-by-step explanation:

The radius is half the diameter:R= 1/2 d

Substitute the value of d (7 inches) in the formula to find r:

r= 1/2 x 7 in

r= 3.5 in

Answer:

3.5 inches should be the answer.

pls help! whats the area of the sector!

Answers

Answer:

Step-by-step explanation:

[tex]\frac{a}{\pi r^2}=\frac{\theta }{360^o}\\ \\ a=\frac{\pi r^2 \theta }{360^o}\\ \\ r=36^o,\ \theta =80^o\\ \\ a=288\pi cm^2[/tex]

3.- Resuelve los siguientes problemas que se te plantean.
a) El área de un cuadrado mide 225 m2. ¿Cuánto mide su lado? ¿Cuál es su perimetro?

Answers

Answer:

Nuevo perímetro del cuadrado = 24 + 4 = 28 cm. Ejemplo 5: El área de un parque cuadrado es de 225 m2.

Find the mode using the above data dot plot.

Answers

mode is the most reoccurring number

therefore the mode is 48

Answer:

48

Step-by-step explanation:

Mode- the most frequently  occuring observation ... here in this case it will be 48

I hope im right!!

Pleaseeeeee can anyone help me????

Answers

Answer:

27.63

Step-by-step explanation:

r = 4.4

Circumference of a Circle formula:

C = 2πr

C = 2(3.14)(4.4)

C = 6.28(4.4)

C = 27.632

Rounded to the nearest hundredth:

27.63

Answer:

C= 27.63 inches

Step-by-step explanation:

Use the circumference formula C = 2πr.

Subsitute what you are given into the equation and solve.

C = 2πr

C= 2*(3.14)*(4.4inches)

C= 27.63 inches

An item costs $420 before tax, and the sales tax is $25.20 . Find the sales tax rate. Write your answer as a percentage.

Answers

Answer:

6%

Step-by-step explanation:

Given data

Cost of item= $420

Tax= $25.2

Required

The tax rate

=25.2/420*100

=0.06*100

=6%

Hence the tax rate is 6%

She sold 54 of thin mints, which was 60 percent of the total number she sold. how many total boxes did she sell?

Answers

set up a proportion

54 60
— = —
x 100

(100)(54)= 60(x)

5400=60x

x= 5400/60

x=90

I NEED HELPPPPPP PLSSS !!!!

Answers

Answer:

If they scored 8 touch downs then the answer would be 48 points.

Explanation: 8x6=48

8 x (5 + 2) = (8 x h (8 x j)

Answers

Answer:

64hjx^2

Step-by-step explanation:

I hope this helps :)

Let me know if you need an explanation or the steps

Please help!! I will give brainliest

Answers

The answer is A
I did this class last year

$5,200 at 4% for 3 years. Answers

Answers

answer $5,824

if u need to show work:

5,200(.04)=208
208(3)=624
5,200+624=5,824

hope this helps! can u please give me brainliest
Answer 5,824

Step by step explanation:

What is the area of the rectangle below in square units

Answers

Answer:

21x square units

Step-by-step explanation:

length times width = area

3 * 7x = 21x

PLEASE ANSWER FAST!

A water tank contains exactly 1,000 gallons. A pump fills the remainder of the tank using
a logistic function. If the volume of the tank is 15,000 gallons and the pump fills the tank at a rate of 10.4% per minute, explain how to find the value of a for the logistic function that describes this scenario.

Answers

Answer:    V ( t ) = 1 + 1 4 e − 0 . 1 0 4 t 1 5 , 0 0 0 ​   ​  

The required value for the logistic function describing the scenario of the water tank being filled at a rate of 10.4% per minute.

What is the logistic function?

The logistic function has the form:

[tex]f(x) = L / (1 + a \times e^{(-kx)})[/tex]

Where:

f(x) is the volume of the tank at time x

L is the maximum volume the tank can hold

a is a constant that determines the growth rate of the function

k is a constant that determines the rate at which the growth slows down as the tank approaches the maximum volume

In this case, the maximum volume of the tank is 15,000 gallons, so L = 15,000.

The pump fills the tank at a rate of 10.4% per minute, so k = 0.104.

To find the value of a, we need to solve the logistic equation for a given the values of f(x), L, and k.

We can rearrange the logistic equation to solve for a:

[tex]a = (1 / f(x)) - (1 / L) \times e^{(kx)}[/tex]

Substituting the known values into this equation, we get:

[tex]a = (1 / 1,000) - (1 / 15,000) \times e^{(0.104x)}[/tex]

This equation can be used to solve for the value of a for any given value of x (time). For example, if we want to know the value of an after 10 minutes, we can substitute x = 10 into the equation to get:

[tex]a = (1 / 1,000) - (1 / 15,000) \times e^{(1.04)}[/tex]

This gives us the value of a for the logistic function that describes the scenario of the water tank being filled at a rate of 10.4% per minute.

To learn more about logistic function click here:

https://brainly.com/question/18686811

#SPJ5

José paid $47.00 for 4 movie tickets. Each ticket cost the same amount. What was the cost of sch movie tidet a dollars and cents? ​

Answers

Answer: 11.75

Step-by-step explanation:

47 / 4= 11.75

Answer: each ticket cost $11.75

Step-by-step explanation:

47.00/4=11.75

Hope this helps!

If the cos of angle A = 1/2, then find the measure of angle A.

Answers

Answer:

<A= 60 degrees

Step-by-step explanation:

Since cosA=0.5, we can take the inverse cos of 0.5 to get 60 degrees.

Hope this helped!

its coordinate planes

Answers

Answer:

V

Step-by-step explanation:

can someone please help me asap

Answers

Answer:

I cant see it....

Step-by-step explanation:

I cant see it....

Find the surface area. Answer without units.
18 cm
11 cm
9cm
Please help hurry

Answers

Answer:

306

Step-by-step explanation:

v = 1/3bh

2×(18×11 + 18×9 + 11×9) / 3 = 918/3

= 306

hope this helps, mark brainliest if it did luv gl !

HELPP ILL GIVE BRAINLIEST

Answers

When we divide exponents with the same base, we will subtract them
2-8 is -6 so we have 5^-6
We can rewrite exponents with a negative sign over 1 so we get
1/5^6 (A)
It’s choice A........

What is the distance between (4, 7) and (-8, 3)? Round to the nearest tenth.

Answers

Answer:

The distance is approximately 12.6.

Step-by-step explanation:

Moving from (-8, 3) to (4, 7), we see x (the horizontal dimension) increasing by 12 and y (the vertical dimension) increasing by 4.  Think of 12 and 4 as the legs of a right triangle whose hypotenuse represents the distance between these two given points.

This distance, from the Pythagorean Theorem, is

d = √(12^2 + 4^2) = √(144 + 16) = √160 = √16√10.

The desired distance is approximately 12.6.

the relationship between a and b if a + b = 0

Answers

Answer:

a=-b

Step-by-step explanation:

a+b=0a=-b

Or,

b=-a

Find the volume of a square pyramid with base edge = 9 cm
and height = 7 cm.

PLZ HELP FAST

Answers

right square pyramid V=189cm³

Find the missing side length of a right triangle with a leg measure of 3 inches and a hypotenuse measure of 5
inches.

Answers

a=3 in
c=5 in
c^2=a^2+b^2
5^2=3^2+b^2
25=9+b^2
b^2=25-9
b^2=16
b= √16
b=4

1. Find the mean, median, and mode of each set of numbers.
33,000 34,700 35,000 36,500 37,000 34,700

Answers

Answer:

mode is 0 shshshshsbsbsbbsnsnsnsjsnsns

Answer:

Mode 34,700

Median 35,750

Mean 35,150

AB
Round your answer to the nearest hundredth.
С
4
A
25°
?
B

Answers

Answer:

AB ≈ 4.41

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos25° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{AC}{AB}[/tex] = [tex]\frac{4}{AB}[/tex] ( multiply both sides by AB )

AB × cos25° = 4 ( divide both sides by cos25° )

AB = [tex]\frac{4}{cos25}[/tex] ≈ 4.41 ( to the nearest hundredth )

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