Answer:
50 miles per hour
Step-by-step explanation:
Just divide 350 by 7
how do i factorise x^2+6x-40 ?
9514 1404 393
Answer:
(x +10)(x -4)
Step-by-step explanation:
Compare the factored and expanded forms:
(x +p)(x +q) = x^2 +(p+q)x +pq = x^2 +6x -40
That is, the constants in the binomial factors will be factors of -40 that have a sum of 6. This is where your knowledge of multiplication tables is helpful.
-40 = -1×40 = -2×20 = -4×10 = -5×8
The sums of these factor pairs are 39, 18, 6, 3, respectively. So, the one we want is (-4)(10) = -40. Now that we know the values of 'p' and 'q', we can write the factorization ...
x^2 +6x -40 = (x -4)(x +10)
Simplify.
2x (3 – 1) + 3
Whoever answers 1-6 gets brainliest! Thank you! I need it ASAP
help mee please and thanks
Answer:
x= −1/5y + 2/5
Step-by-step explanation:
Let's solve for x.
y=−5x+2
Step 1: Flip the equation.
−5x+2=y
Step 2: Add -2 to both sides.
−5x+2+−2=y+−2
−5x=y−2
Step 3: Divide both sides by -5.
Answer:
x= -1/5y + 2/5
not 100% sure if ur trying to solve for x or just graph that equation but hopefully this helped lol :)
Clarissa (the surveyor from our book) is at home and needs to figure out how tall her wall is in order to replace one of the lights. She places the mirror on the ground 27 feet from the wall. Clarissa is 9 feet from the mirror, and Clarissa's eyes are 6 feet from the ground.
Answer:
The height of the wall is 18 ft.
Step-by-step explanation:
I have taken a look at the question, and will label the diagram accordingly. Check the attachment.
We are asked to calculate the height of the wall. Well, the incidence ray is equal to the reflected ray, so therefore by AA we have similar triangles. Setting up a proportion to determine the height of the wall:
9/6 = 27/x [where x = height of the wall]
x = 27*6/9 = 18 ft.
D
Question 7
Solve the following expression.
(100.40 - 25.40) + 2(3.25 +4)
Answer:
89.50
Step-by-step explanation:
Answer: It is 89.5
Step-by-step explanation:
I need help simplifying it
Answer:
D: 13b^3 - 18b^2 - 7b + 12
Step-by-step explanation:
First expand the brackets by multiplying (10b^2+7b-3) by -1
Then rearrange the terms so you can see where you have to add them together.
Then simplify
Someone please help me with these. I forgot how to do these. Need within a hour
simplify the following monomials.
Answer:
13. [tex]m^{37} n^{22}[/tex]
14. [tex]-48x^{4} y^{4}[/tex]
15. [tex]8x^{17}y^{6} z^{10}[/tex]
16. [tex]16x^{38}y^{22}[/tex]
17. [tex]512m^{9} n^{3}[/tex]
18. [tex]-96x^{14} y^{2}[/tex]
19. [tex]-54m^{5} n^{4}[/tex]
20. [tex]8r^{6}s^{10}[/tex]
21. [tex]-x^{15}y^{21}[/tex]
Step-by-step explanation:
The probability that it rains in London on any particular day is 0.3.
If it rains then the probability of it raining the following day decreases to 0.15.
Consider the next two days.
What is the probability it rains on both days?
Answer:
Day 1=0.075
Day 2=0.0375
Step-by-step explanation:
Divide each day by 2
The probability it rains on both days if the probability that it rains in London on any particular day is 0.3 is 0.595
What is the probability?The probability is the likeliness of happening an event. It can be calculated by using the following formula:
Probability=Number of events/Number of total outcomes
How to calculate the probability?
The probability that it rains in London on any particular day is 0.3
If it rains then the probability of it raining the following day decreases to 0.15.
The probability that it rains on the second day=1-0.15=0.85
The probability that it rains on the third day=0.85-0.15=0.7
The probability that it rains on both is=0.85*0.7=0.595
Hence the probability that it rains on both is 0.595
Learn more about probability at https://brainly.com/question/24756209
#SPJ2
Renee bought 6 tickets to a football game. She paid a total of $216.
Answer:
1 ticket =$36
Step-by-step explanation:
216÷6= $36
Answer:
36
Step-by-step explanation:
Divide 216 by 6 to get the total amount per ticket
If 20 mL of medicine cost $2.00 to produce, then how much does 1L cost?
Answer:
$100
Step-by-step explanation:
1L has 1000ml, so 1000/20=50x$2.00=$100
I think
Hope this helps
:)
The geometric mean of a number and four times the number is 22. What is the number?
The number, such that the geometric mean of the number and four times the number is 22, will be 11.
What is the Arithmetic and Geometric mean of two numbers a and b ?The arithmetic mean of two numbers [a] and [b] is equal to (a + b)/2 and their geometric mean is equal to [tex]\sqrt{ab}[/tex]
We have the geometric mean of a number and four times the number is 22.
According to the question, we can write -
G.M. = [tex]\sqrt{ab}[/tex]
Assume that the number is [x]. Then the second number will be [4x]. So -
22 = √4x²
22 = √(2x)²
2x = 22
x = 11
Therefore, the number, such that the geometric mean of the number and four times the number is 22, will be 11.
To solve more questions on Arithmetic and Geometric averages, visit the link below -
brainly.com/question/13817006
#SPJ2
Scott Disick is known for his club scene. Although he is optimistic about the nightlife in Philly, he is more of a NYC guy when he is in the East Coast. He is concerned about the overall quality of the nightlife. He believes the probability is 0.50 that the scene will be excellent, 0.20 that it is average and 0.30 that the scene will not be up to his standards. He also estimates that the probability of Leo Di Caprio coming in an excellent scene will be 0.7, the probability of him coming at an average setting it is 0.3 and the probability that it will not be up this standards at .2 List out the probabilities of an excellent scene, an average scene and a below standards scene. If Leo shows up, what kind of probability is this called
Answer:
1.)
P(E) = 0.5
P(A) = 0.2
P(N) = 0.3
Conditional probability ;
0.47
Step-by-step explanation:
Let :
E = Excellent ; A = Average ; N = not up to standard
P(E) = 0.5
P(A) = 0.2
P(N) = 0.3
If Leo shows up ; this type of probability is called a conditional probability. It is the likelihood of an event based on a certain or already satisfied condition.
The probability that Leo is coming :
Leo ; Excellent = 0.7
Leo ; Average = 0.3
Leo; Not up to standard = 0.2
Hence, probability they Leo is coming :
(0.5 * 0.7) + (0.2 * 0.3) + (0.3 * 0.2)
0.35 + 0.06 + 0.06
= 0.47
If there are 48 double decker buses in a depot and 24 single, what percentage of the buses are single decker?
Answer:
17.28
Step-by-step explanation:
Totall buses: 48+28 = 72
% Of single decker: 72×(24÷100) = 17.28
Approximately 33.33 percentage of the buses in the depot are single-decker buses.
To find the percentage of single-decker buses, we need to calculate the ratio of the number of single-decker buses to the total number of buses (single-decker and double-decker) and then multiply by 100.
The total number of buses in the depot is given as 48 double-decker buses + 24 single-decker buses = 72 buses.
The number of single-decker buses is 24.
The ratio of single-decker buses to the total number of buses is 24 buses / 72 buses = 1/3.
To find the percentage, we multiply the ratio by 100:
(1/3) * 100 = 33.33%
Therefore, approximately 33.33% of the buses in the depot are single-decker buses.
To know more about percentage click here :
https://brainly.com/question/24159063
#SPJ2
Solve for r in the expression 3 (2 - 5) = 12.
Answer:
The answer is x = 9
Step-by-step explanation:
[tex]3(x-5)=12[/tex]
use the distributive property on the left side
[tex]3x-15=12[/tex]
add 15 to both sides
[tex]3x=27[/tex]
divide both sides by 3
[tex]x = 9[/tex]
Answer:
The correct answer will be x=9
Step-by-step explanation:
Because I said so
Answer number 2 please
Answer:
Its 4
Step-by-step explanation:
Volume is base times wigth times height to 5*4*v has to be 60 so we know v is 4.
Solve 17 x 5/8 as a mixed number
Answer:
it's 10 and 5/8
Step-by-step explanation:
I hope this has helped you
The solution of expression [tex]17 \times \dfrac{5}{8}[/tex] in the form of mixed number would be [tex]10 \dfrac{5}{8}[/tex].
Used the concept of multiplication that states,
To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.
Given that the expression to solve,
[tex]17 \times \dfrac{5}{8}[/tex]
Now multiply separately with the numbers given,
[tex]17 \times \dfrac{5}{8}[/tex]
[tex]\dfrac{85}{8}[/tex]
It can be written as,
[tex]10 \dfrac{5}{8}[/tex]
Therefore, the mixed form of solution is [tex]10 \dfrac{5}{8}[/tex].
To learn more about multiplication visit:
https://brainly.com/question/10873737
#SPJ6
Which equation is the inverse of y = x^2– 36?
ОО
y=1/x+6
y=+ X+36
y=+ x +36
y=+Vx2+36
Answer:
y inverse = √(x + 36)
Step-by-step explanation:
inverse of y = x² - 36
=> x² = y + 36
=> x = √(y + 36)
interchange x and y
=> y = √(x + 36)
An astronaut was exploring the moon of a distant planet, and found some glowing goo at the bottom of a very deep crater. She brought a 10-gram sample of the goo to her laboratory. She found that when the goo was exposed to light, the total amount of goo increased by 100% every hour.
Giving Brainliest
How much goo will she have after 1 hour? After 2 hours? After 3 hours? After n hours?
Answer:
after 1 hr = 20 after 2 hrs = 40 after 3 hrs = 80 160 n 3 hrs
Write an equation in standard form of the circle with the given properties.
Center at the origin; r square root 6
Answer:
x² + y² = 6
Step-by-step explanation:
The standard form of the equation of a circle centred at the origin is
x² + y² = r² ( r is the radius )
Here r = [tex]\sqrt{6}[/tex] , then
x² + y² = ([tex]\sqrt{6}[/tex] )² , that is
x² + y² = 6
3^4+4.5= Input whole number
Step-by-step explanation:
(3 × 3 × 3 × 3) + 4.581 + 4.585.5MARK ME AS BRAINLISTPLZ FOLLOW MEAnswer:
thats 86 because it's the nearest whole number
Step-by-step explanation:
(3 × 3 × 3 × 3) + 4.5
81 + 4.5
85.5
SO THAT MEANS 3^4+4.5 = 85.5 rounded to the nearest whole number is 86Please help me if you can
Answer:
first 1 is 5.7 2 is the 4.6 3 is the 3 is the middle and the 4 is the last
Step-by-step explanation:
jus use the internet XD
The average ratio of cats to dogs in the uk is 13:15 there are 5200 cats in the city of Bristol . Using the national average ratio , estimate how many dogs there are in the city of Bristol
Answer:
5,999
Step-by-step explanation:
Suppose that 10% of people own dogs. If you pick two people at random what is the probability that they both own a dog?
Answer: probability 0.01 %
Step-by-step explanation:
P(A) = 10% = 10/100 = 0.10
pick two people -
= P(A).P(A)
= 0.10 times 0.10
= 0.01
probability = 0.01
The probability that they both own a dog is 1/50 or 0.02.
What is probability?Probability is the chance of happening an event or incident.
Given, 10% of people own dogs.
Let, there are 100 people.
Therefore, the number of people own dogs is
= 100 × 10%
= 10
If I pick two people at random, then the probability that they both own a dog is
= 2/100
= 1/50
= 0.02
Learn more about probability here: https://brainly.com/question/16026417
#SPJ3
A sculptor needs to lift a piece of marble. It is a cuboid with dimensions 1m by 0.6 m by 0.3 m. Marble has a density of 2.7 g/cm cubed. What is the mass of the marble in kg?
A scientist is studying the relationship of two quantities S and T in an experiment. The scientist finds that
under certain conditions, as the quantity of S increases, the quantity of T decreases. After taking
measurements, the scientist determines that the rate of change of the quantity of S with respect to the
quantity of T present is inversely proportional to the natural logarithm of the quantity of T. Which of the
following is a differential equation that could describe this relationship?
Differential equation is a way to represents the function and its variable by relating them.Hence the differential equation that describe the relationship between S and T is,
[tex]S \propto \dfrac{1}{log_e T}[/tex]
Given-
The quantity of S increases, the quantity of T decreases.
The rate of change of the quantity of S with respect to the quantity of T present is inversely proportional to the natural logarithm of the quantity of T.
What is differential equation?Differential equation is a way to represents the function and its variable by relating them.
As the quantity of S changes with respect to the quantity of T present is inversely proportional. Thus,
[tex]S \propto \dfrac{1}{T}[/tex]
But quantity of S changes inversely proportional to the natural logarithm of the quantity of T. The natural logarithm of a number is its logarithm to the base of e (constant).
Thus the equation can be given is,
[tex]S \propto \dfrac{1}{log_e T}[/tex]
Hence the differential equation that describe the relationship between S and T is,
[tex]S \propto \dfrac{1}{log_e T}[/tex]
Learn more about the differential equation here;
https://brainly.com/question/25731911
20.7 liters of water came out of a faucet today. If 1.5 liters of water come out each minute, how many minutes was the faucet on?
Answer:
13 min 8 sec
Step-by-step explanation:
Answer:
13 hours 15 mins
Step-by-step explanation:
20.7/1.5= 13.8
Question 11
A rectangle with a perimeter of 12 inches is enlarged by a scale factor of 3. What is the perimeter of the enlarged
rectangle?
Answer:
The perimeter of the enlarged rectangle is 36 inches.
Step-by-step explanation:
Perimeter of an enlarged figure:
To find the perimeter of an enlarged figure, we multiply the perimeter of the original figure by the scale factor.
In this question:
Perimeter of the original rectangle: 12 inches
Scale factor: 3
Perimeter of the enlarged rectange:
12*3 = 36 inches
PLEASE HELP WITH THIS, TY
Answer:
Option B
Step-by-step explanation:
The area of a parallelogram = base*height
= 13.5*9.2
= 124.2 cm^2