Answer:
B) x = 5/2
Step-by-step explanation:
subtract 3 from each side to get:
4x² - 20x + 25 = 0
this is the difference of 2 squares:
(2x -5)² = 0
one solution, x = 5/2
Answer:
B) x = 5/2
Step-by-step explanation:
4x² - 20x + 28 = 3
Move terms to the left side
4x² - 20x + 28 - 3 = 0
Subtract the numbers
4x² - 20x + 25 = 0
Use the quadratic formula
[tex]x =\frac{-b+\sqrt{b^{2}-4ac } }{2a}[/tex]
Once in standard form, identify a, b, and c from the original equation and plug them into the quadratic formula.
4x² - 20x + 25 = 0
a = 4
b = -20
c = 25
x = [tex]\frac{-(-20)+\sqrt{(-20)^{2}-4x4x25 } }{2x4}[/tex]
Evaluate the exponent
x = [tex]\frac{20+\sqrt{400-4x4x25 } }{2x4}[/tex]
Multiply the numbers
x = [tex]\frac{20+\sqrt{400-400 } }{2x4}[/tex]
Subtract the numbers
x = [tex]\frac{20+\sqrt{0} }{2x4}[/tex]
Evaluate the square root
x = [tex]\frac{20+0 }{2x4}[/tex]
Add zero
x = 20 / 2 x 4
Multiply the numbers
x = 20 / 8
Cancel terms that are in both the numerator and denominator
x = 5/2
I need an answer! NO LINKS PLS! il give brainlist
A rocket travels according to the equation h = - 4.9(t - 6)^2 + 182, How high was the rocket above the ground when it was fired?
Can someone please help me on this
Answer:
9
Step-by-step explanation:
For number five what is the Mean, Median, Mode, and Range
Answer:
Median- 31
Mean- 39
Mode- 20
Range-71
Step-by-step explanation:
Median-13, 20, 20, 20, 31, 35, 61, 67, 84
31 one is in the middle, also you have to sort it for least to greatest.
Mean- Add all the number then divide by the numbers there are.
Mode-It has occored the most
Range- sort least to greatest, then subtract the highest number to the lowest
I dont Know what to put here
But Anwer Pls
What is diameter:
in geometry, a diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle. It can also be defined as the longest chord of the circle. Both definitions are also valid for the diameter of a sphere.
What is radius:
In classical geometry, a radius of a circle or sphere is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length. The name comes from the Latin radius, meaning ray but also the spoke of a chariot wheel.
Explanation:
The diameter is the line that goes across the center of the circle and double the radius which is half, therefore KR is the correct answer.
Answer:
KR, D, or the last option.
Statement answer:
Segment KR is the Diameter of Q.
I HOPE I HELPED!!! HAVE AN AMAZING DAY/NIGHT!!! PLEASE MARK ME BRAINLIEST IF I HELPED YOU!!
15 POINTS!!!! HELPP PLEASEE QUICK I NEED IT NOWW PLSS I POSTED THIS SO MANY TIMES PLSSS NO LINKS NO BOT OR ANSWERS JUST TO GET POINTS I WILL REPORTT!! Which of the following equations describes the line shown below? Check all
that apply.
(-6,2)
(-1,-4)
Answer:
Pretty sure its A and B
Step-by-step explanation:
Slope is -6/5, so that leaves just A B and E
Plugged it in, only A and B were correct
Math helppp plzzzz 20 points helppp plzzzzz no links or imma report u
find the volume................
Answer:
[tex]1) v= 400 ft^{2}[/tex]
[tex]2) v=1093.3m^{3}[/tex]
Step-by-step explanation:
1) v= 1/3 ab ×h
v= 1/3 (10)(10)×√13²-5²
v= 400 ft²
-------------------
2) v= πr² h/3
v= 1/3 × π×(6)²×29
v= 1/3×π×12×29
v= 348π
v= 1093.27
≈1093.3
---------------
hope it helps...
have a great day!!
What is the image of (-5,-6) after a reflection over the line y=−x?
Answer:
The image will be the point (6,5)
Step-by-step explanation:
Here, we want to get the image of the point (-5,-6) after the reflection
Mathematically if we reflected a point with the pre-image coordinates (x,y) over the line y = -x; its image becomes (-y, -x)
So, (-5,-6) becomes (6,5)
Solve:
2(x - 3) + (x + 3) = 6x
Answer: x=−1
Step-by-step explanation: Hope this help :D
Answer:
x=-1
Step-by-step explanation:
Adam jogs at an average speed of 10km/h from his house to the airport. The airport is 7km away from his house. At what time must Adam leave his house in order for him to reach the airport at 7:20 am.
Answer:
6:38am
Step-by-step explanation:
From the question we are told that
Average speed [tex]V_{avg}=10km/h[/tex]
Distance traveled [tex]d=7km[/tex]
Generally the velocity across a distance is mathematically given given as [tex]V=d/t[/tex]
[tex]10=\frac{7}{t}[/tex]
[tex]t=0.7h\\t=42minutes[/tex]
Therefore
7:20-42 minutes =6:38am
HURRRY! ILL GIVE BRAINLEST Mrs. Jordan surveyed all of her students to find out which testing format they prefer. Of the 120 students, 30 prefer ALEKS.com, 60 prefer paper, 10 prefer Deltamath.com and 20 prefer Microsoft Forms.
What is the relative frequency of students who prefer taking their test online?
answers: 17%
25%
8%
50%
Answer:
50%
Step-by-step explanation:
30+10=40
40+20=60
120-60=60
60 is 50% of 120
please help if you want points and happy ramadan if you celebrate it
Answer:
1. yes
2.no
3.yes
4. no
hope this helps I'm not sure about number 2 tho
Wich of the numbers below are factors of 20? Select that apply.
A)3
B)4
C)5
D)10
E)16
4, 5, And 10
4x5= 20
5x4= 20
10x2= 20
Plsss help me on this
Answer:
Pretty sure it is Product of Powers Property
Step-by-step explanation:
2/3+1/12 what's the answer
Answer:
3/4 or 9/12 make the denominators the same then just add
Answer:
9/12 or simplified as 1/4
Step-by-step
2×4/3×4 + 1/12
= 8/12 + 1/12
= 9/12
= 1/4
2( x + 7) - (-18 + 4/5)
Answer:
[tex]2x+ \frac{156}{5}[/tex]
Step-by-step explanation
simplify step-by-step.
2(x+7)−(−18+
4
5
)
Distribute the Negative Sign:
=2(x+7)+−1(−18+
4
5
)
=2(x+7)+(−1)(−18)+−1(
4
5
)
=2(x+7)+18+
−4
5
Distribute:
=(2)(x)+(2)(7)+18+
−4
5
=2x+14+18+
−4
5
Combine Like Terms:
=2x+14+18+
−4
5
=(2x)+(14+18+
−4
5
)
=2x+ [tex]\frac{156}{5}[/tex]
What is the equation for the line that passes through the points (-5.5, 2.5) and (-2.5, -3.5)
questions are:
A) y= 2x + 13.5
B) y= x - 1
C) y= -2x + 1.5
D) y= -2x - 8.5
Answer:
D
Step-by-step explanation:
How do you find 3/4 of 20
Fast response please!!
Answer:
15
Step-by-step explanation:
3/4(20/1) = (3*20)/(4*1)
60/4
15
En una tienda en la que todo está rebajado el 15% he comprado un pantalón por el que he pagado 102 €. ¿Cuál era el precio antes de la rebaja?
Answer:
120 euros
Step-by-step explanation:
X= 100% del precio (antes de la rebaja)
Pagaste el 85% pues habia descuento del 15%
85%--------------102
100%---------------x
CROSS MULTIPLICATION
85X = 10200
Divide cada parte por 85
x= 120
Teniendo en cuenta la definición de descuento, el precio antes de la rebaja era 120 €.
En una operación de descuento, el valor que se paga después de haberle practicado el descuento se denomina “valor actual”.
Recordando que el porcentaje representa una parte del total, el valor actual se puede calcular multiplicando el porcentaje a descontar por el precio original, al cual luego se divide por cien. Finalmente, se resta al precio original este valor de descuento calculado. De esta manera se averigua el precio de venta.
Entonces, sea el precio original del producto p. Por lo que el descuento del precio original será:
15% de p= (15×p) ÷10
Sabiendo que se ha pagado 102 € por el pantalón, entonces:
p - (15×p) ÷10 = 102
Resolviendo
p - 0,15×p= 102
0,85×p= 102
p= 102÷0.85
p= 120
Finalmente, el precio antes de la rebaja era 120 €.
Aprende mas con estos ejemplos:
https://brainly.com/question/23880934?referrer=searchResultshttps://brainly.com/question/20333251?referrer=searchResultshttps://brainly.com/question/21289921?referrer=searchResultswhat is1 00 + 84 – 62x = 494
27 thanks no links or I will report you
How many anime have you watched and name 10 of them if you can :D
Answer:
the best anime is death note.
Step-by-step explanation:
Answer:
My hero Achadamia is my fav. um Attack of the titan Black Clover and Fruits basket thats all i can name lol
Step-by-step explanation:
36x - 63 = k(4x - 7)
Need help, I dont know what im doing wrong here
Answer: k= 9
x= 7/4
Step-by-step explanation:
https://www.symbolab.com/solver/order-of-operations-calculator/36x%20-%2063%20%3D%20k%5Cleft(4x%20-%207%5Cright)
Triangle PQR with vertices P(-2,3), Q (2,4) and R (1,-1) in the line x =-3 PLEASE NEED HELP URGENT
Answer:
p'(-5,3) q'(-1,3) r'(-2,-1)
Find the slope of the line that passes through the points (0,-5) and (-2,-3).
Answer:
the slope is -1
Step-by-step explanation:
formula for slope is (y2-y1)/(x2-x1)
lets say (-2,-3) is (x2,y2)
-3-(-5)=2
-2-0=-2
2/-2=-1
At the craft store, Maureen bought a bag of yellow and red marbles. She received 30 marbles in all. 24 of the marbles were yellow. What percentage of the marbles were yellow?
so is not 30 so what is it? I’ll mark brainliest
Answer:
15
Step-by-step explanation:
in a triangle
base (b) = 5 cm
height (h) = 6 cm
Area of the triangle
= 1/2 * b * h
= 1/2 * 5 * 6
= 5 * 3
= 15 cm²
hope it helps :)
PLEASEE HELPP HELPP IMMA FAIL
Events A and B are mutually exclusive. Suppose event A occurs with probability 0.36 and event B occurs with probability 0.31. Compute the following. (If necessary, consult a list of formulas.) (a) Compute the probability that A does not occur or B does not occur (or both). 0. x 5 ? (b) Compute the probability that either A occurs without B occurring or A and B both occur. 0.36
Answer:
Events A and B are dependent
Step-by-step explanation:
If A and B are two events such as A and B are dependent then
P(A∩B) P(A) P(B)
An event A will occur with probability 0.4 that is
An event B will occur with probability 0.6 that is
The probability that both A and B will occur is 0.20 that is P(A∩B) = 0.20
Therefore,
P(A∩B) P(A) P(B)
So,
events A and B are dependent
