Answer:
x^2 +3x -4 = 0 --> (x +4)(x -1) = 0
Step-by-step explanation:
Let's find A and B such that
A*B = - 4 and A+B = 3
Numbers are:
A = +4 and B = -1
The factoring equation is y = (x + A)(x + B)
In this specific case: y = (x +4)(x -1)
Solutions to the quadratic equation require
y = (x +4)(x -1) = 0
and hence
x +4 = 0 --> x = -4
x - 1 = 0 --> x= +1
Which operation is equivalent to dividing by 1/5?
A Dividing by 5
B Dividing by 50
C Multiplying by 5
D Multiplying by 5
Wht is 899 divided by 8
Answer:
112.375
Step-by-step explanation:
Write the mixed number as an improper fraction 4 1/6
Answer:
25/6
Step-by-step explanation:
Take the number on the left multiply by the denominator and add the numerator which is 4×6+1 =25
Reuse the same denominator which is 6 so 25/6
Work backwards: 25/6 to 4 1/6 (25 divide by 6 is 4 remainder 1 so 4 on the left and 1 as the numerator)
Answer:
25/6
Step-by-step explanation:
put the denominator as it is
what is a pie chart in mathematics
Answer:
A pie chart is a type of graph that represents the data in a circular graph.
Answer:
Brainliest please if this helps!
Jodi's car used 12 gallons of gas to travel 456 miles. How many miles did her car travel per gallon of gas?
Answer:
38
Step-by-step explanation:
If there is a constant rate of change in gas prices, all we do is divide 456 by 12 to see the price of each gallon.
Answer:
38
Step-by-step explanation:
456 divided by 12 =38.
Ellie is buying a camera for $615.50 and a camera bag is $65.50. If the sales tax rate is 8%, what will be the amount of sales tax on Ellie's purchase? A) $35.26 B) $40.58 C) $54.48 D) $58.72
Answer:
C: $54.48
Step-by-step explanation:
--> 615.50 + 65.50 = $681.00 or $681
--> 8% of $681 is $54.48
Hope this helped! :D
Given the regular polygon, what is the measure of each numbered angle?
Answer:
Answer A
Step-by-step explanation:
Approach 1
B, C, and D are wrong because angles 1 and 2 are congruent.
Therefore your answer of both being 60°
Approach 2
Let x = angle 1.
360/x = 6
x = 60°.
Therefore Angle 1 is 60°
An interior angle of a hexagon is 120°
Let y = angle 2.
y is half of 120°
So 120/y = 2
y = 60°
During the first half of a basketball game, a team made 50% of their 40 field goal attempts. During the
second half, they scored on only 40% of 30 attempts from the field. What was their field goal shooting
percentage for the entire game?
The answer maybe 5%
Order the numbers from least to greatest. 0.3, 9/25, 33%, 0.35
Answer:
0.3(least)
0.33
0.35
0.36(greatest)
Step-by-step explanation:
Okay, so first we need to have all of our numbers in the same category of variable. So first, we will convert 9/25 to a decimal.
To do that, we must divide 9 by 25 to get our answer of 0.36.
Now, we will convert the 33% to a decimal by dividing it by 100 to get 0.33
We now have our list, which should be ordered as:
0.3
0.33
0.35
0.36
A computer is used to generate passwords made up of numbers 0 through 9 and lowercase letters. The computer generates 400 passwords one character at a time.
A uniform probability model is used to predict the first character in the password.
What is the prediction for the number of passwords in which the first character is a vowel?
Round your answer to the nearest whole number.
56 passwords
77 passwords
111 passwords
233 passwords
The prediction for the number of passwords in which the first character is a vowel is 56 passwords.
How to find that a given condition can be modelled by binomial distribution?Binomial distributions consist of n independent Bernoulli trials.
Bernoulli trials are those trials which end up randomly either on success (with probability p) or on failures( with probability 1- p = q (say))
Suppose we have random variable X pertaining to a binomial distribution with parameters n and p, then it is written as
[tex]X \sim B(n,p)[/tex]
The probability that out of n trials, there'd be x successes is given by
[tex]P(X =x) = \: ^nC_xp^x(1-p)^{n-x}[/tex]
The expected value and variance of X are:
[tex]E(X) = np\\[/tex]
Given that the characters that can be used are numbers 0 through 9 and lowercase letters. Therefore, a total of 36 different characters are available.
Since we need to know the passwords made with vowels, therefore, the probability of a password in which the first character will be a, e, i, o, u is (5/36).
Now as the computer produces 400 passwords, therefore, the predicted value can be written as,
[tex]E = np = 400 \times \dfrac{5}{36} = 55.5556 \approx 56[/tex]
Hence, the prediction for the number of passwords in which the first character is a vowel is 56 passwords.
Learn more about Binomial Distribution:
https://brainly.com/question/14565246
#SPJ1
PLEASE HELP FIND THE AREA ILL GIVE BRAINLIESTTTT
Answer:
638.4
Step-by-step explanation:
You could make 2 triangles (One on each side)
91.2*7=638.4
You could cut this in half, but it would be pointless as you are going to add it back again.
Discuss the order of operations
Answer:
The answer can be found below.
↓↓↓↓
Step-by-step explanation:
[tex]\Large\boxed{\underline{\text{ORDER OF OPERATIONS:}}}[/tex]
If you need to determine the order of operations, use PEMDAS or BODMAS, which stands for:
[tex]\underline{\text{GIVEN:}}[/tex]
PEMDAS:
Parentheses ⇒ (3+4)Exponents ⇒ 3²Multiply ⇒ 8*4Divide ⇒ 12÷4Add ⇒ 6+6Subtract ⇒ 10-5BODMAS:
BracketsOrderDivideMultiplyAddSubtractI hope this helps, let me know if you have any questions.
The diameter of a circle is 22 yards. What is the circle's circumference?
Use 3.14 for .
Will mark brainleest
Answer:
the circumference is 69.08
Step-by-step explanation:
If 22 is the diameter, all u do to find the circumference is multiply the diameter by 3.14.
Answer:
34.54
Step-by-step explanation:
22 is diameter
formula for circumference is radius times pi
2 radius=1 diameter
22/2=11
11*3.14=34.54
the aquarium of americas has two new shark tanks. each shark tank holds a total of 1,440 gallons of water. the ratio of sharks to gallons of water in tank 1 is 8 to 120 and the ratio of sharks to gallons of water in tank 2 is 3 to 90
Answer:
144 total # sharks
Step-by-step explanation:
Don't know what it is that you are looking for BUT here is the total number of sharks
1440 / 120 * 8 + 1440 / 90 * 3 =
Please help with math! :)
Answer:
1. (10,-4)
2. 12
3. 108
Step-by-step explanation:
First find the cordinate by seing were the point lands on the graph
sense it is +10 right the x = 10, and it is 4 below the origin making it a negitive 4, so u get (10,-4)
The graph is measured 2 units per box and sence the sides are parallel to the axies you can count each square by 2, giving you the measuers of 12 units.
Now finally, The area of a triangle is A=1/2bh, we arlready have our base, and we just found our hight, so now we just have to plug it in.
A= 1/2 (12) (18)
12*18 = 216
A= 1/2 (216)
A= 108
And we are done!
Help with this question
A music concert is selling two types of tickets: VIP tickets and regular tickets. On the
first day, 70 regular
tickets and 25 VIP tickets were
sold raising $7325. On the second day, 40 VIP tickets
and
60 regular tickets
were sold raising $8600.
What is the cost of each type of ticket?
A. VIP tickets cost $
B. Regular tickets cost $
Answer:
A. each VIP ticket costs 125$
B. each Regular ticket costs 60$
Step-by-step explanation:
25A+70B=7325
40A+60B=8600
5A+14B=1465
2A+3B=430
10A+28B=2930
10A+15B=2150
13B=2930-2150=780
B=780/13=60
A=（430-3*60）/2=125
The coach of a baseball team buys 7 bats and 6 balls for $3800. Later, she buys
3 bats and 5 balls for $1750. Find the cost of each bat and each ball
A car traveled 120 miles driving 60 miles per hour. The trip took 2 hours.
If the car traveled 50 miles per hour, how much time would it take to reach the
same destination? Write your answer in hours and minutes.
7x 3 1/4 Answer fast or not idc i don't even want to do this
434
because 7 times 31 will give u 217 and 217 divided by 4 will give an answer of 434.I hope my answer will help u.
does anybody know what 2x+5y=9 is
Do you know SpongeBob? According to a survey by Nickelodeon TV, 88% of children under 13 in Germany recognized a picture of the cartoon character SpongeBob SquarePants. What is the probability that a randomly chosen German child recognizes SpongeBob?
Answer:
22/25
Step-by-step explanation:
Well, you just convert the 88% into a fraction as probability is in fractions so 88% = 22/25
22/25
Step-by22/25-step explanation:
In the diagram, m ZXYZ = 115° and mZWXY = 45°
Х
Answer:
m∠XWY = 70°
Explanation:
Two opposite interior angle sum up to one exterior angle on a straight line.
============
? + 45° = 115°
? = 115° - 45°
? = 70°
Answer:
The value of angle XWY = 70°
Step-by-step explanation:
=> angle XYZ + angle XYW = 180° { linear pair }
=> angle XYW + 115° = 180°
=> angle XYW = 180° - 115°
=> angle XYW = 65°
Now angle WXY + angle XWY + angle XYW = 180° { sum of angles of a triangle is 180° }
=> 45° + 65° + angle XWY = 180°
=> angle XWY + 110° = 180°
=> angle XWY = 180° - 110°
=> angle XWY = 70°
PLEASE HELP PLEASE PLEASE HELP
Answer:
option A Is the answer
Step-by-step explanation:
Quantity of cup used per batch=3/4
No of batches=5/2
Hence number of cups=5/2×3/4
I hope it helped you
-What does the “Volume” of a geometric figure mean?
Answer:
The volume relates to the space inside a figure a measurement amount can take-up
Step-by-step explanation:
Find the missing dimension of the triangle.
Area = 30 mm
-
6 mm
b
b=
mm
Answer:
10 mm
Step-by-step explanation:
We know that the formula for a triangle is A= 1/2(b)(h)
Plug in 30mm for the area as shown and 6 for the base= 30=1/2(6)(h)
Solve= 30=3h
Divide each side by 3 to get h by itself. h=10 or b= 10
depends on which one is missing ^^
Help please!
A skateboard halfpipe is being designed for a competition. The halfpipe will be in the shape of a parabola and will be positioned above the ground such that
Its focus is 30 ft above the ground. Using the ground as the x-axis, where should the base of the halfpipe be positioned? Which equation best describes the
equation of the halfpipe?
A) (0,60); y = 1/240x^2 - 60
B) (0,60); y = 1/240x^2 + 60
C) (0,15); y = 1/60x^2 - 15
D) (0,15); y = 1/69x^2 + 15
Answer: i think the answer should be A,
Step-by-step explanation: I feel like iv done this before sometime ago but i have a feeling its A, hope this helps ^_^
What is the formula of (a+b)² if you give correct answer I will give you brainliest
Answer: You will have to multiply (a+b)×(a+b) . Thus is the formula
Step-by-step explanation: hope it is correct .
Answer:
(a+b)² = a² + 2ab + b²
Step-by-step explanation:
Hello!
This is one of three special binomial products:
(a+b)² = a² + 2ab + b²(a-b)² = a² - 2ab + b²(a+b)(a-b) = a² - b²All you have to do is expand the parenthesis, and this will give you a simple format to follow. This can be used to quickly factor the expanded forms, or quickly multiply the factored forms.
What is the lateral surface area of this right pyramid with a square base?
Answer:
The lateral surface area of a square pyramid is the sum of the areas of the side faces only, whereas the surface area is the lateral area + area of the base. The lateral area of a square pyramid = 2al (or) 2a√[(a 2 /4) + h 2]. To get the surface area, we need to add the area of the base (which is a 2) to each of these formulas.The surface area of a square pyramid = a 2 + 2al (or) a 2 + 2a[(a 2 /4) + h 2]. where, a = Length of the base (square) l = slant height; h = height of the pyramid.
Step-by-step explanation:
hope this helps if not let me know have a great day :)
Brad and Angelina can mow their yard together with two lawn mowers in 20 min
. When Brad works alone, it takes him 30 min. How long would it take Angelina to mow the lawn by herself?
It takes Angelina_______ min to mow the lawn by herself.
Answer:
Let A = Angelina's timeLet
B = Brad's time 20
(1/A + 1/B) = 1 B = 30 20(1/A + 1/30) = 11/A + 1/30 = 1/201/A = 1/20 -1/301/A = 1/60A = 60 minutes for Angelina to do the lawn alone
Step-by-step explanation:
I hope this helped :)