Answer:
X= (-c+b)÷b
or
X= -b×(c-b)
Step-by-step explanation:
C=b-bx
b-bx=c
-bx= c-b
-x=(c-b)÷b
x= -(c-b)÷b
or
-x= b×(c-b)
x= -b×(c-b)
solve for x x^2 + 10x + 25 = 27
[tex]~~x^2+10x+25 = 27\\\\\implies x^2+2\cdot 5 x +5^2 = 27\\\\\implies (x+5)^2 = 27\\\\\implies x +5 = \pm\sqrt{27}\\\\\implies x = -5 \pm\sqrt{3\times 9}\\\\\implies x = -5 \pm3\sqrt 3\\\\\text{Hence,}~~ x = -5 + 3 \sqrt 3 ,~~~ x =-5-3\sqrt3[/tex]
If 20% of a number is 8, find 10% of that number.
Answer:
20%=8
10%=?
by cross multiplications,
10×8=80
80÷20=4
Hence the answer is 4.
Answer:
4
Step-by-step explanation:
think about it we have 8 and 20 %, multiply 8 by 5 since theres 20 % and its 20 % of 100. 100 / 20 = 5 * 8 = 40 but since we have 20 and 10 % getting compared we obv know that it would be half what the answer for 20 % of would be so 4 :D
A car traveled 1010 miles at an average speed of 3030 miles per hour
and then traveled the next 1010 miles at an average speed of 5050 miles
per hour. What was the average speed, in miles per hour, of the car for the
2020 miles?
The average speed, in miles per hour, of the car for the 20 miles is 37.5 mph
Average speedAverage speed v = d/t where
d = total distance and t = total timeMaking t subject of the formula, we have
t = d/v
Time to cover first 10 milesNow when the car travels 10 miles at an average speed of 30 miles per hour,
d = 10 mi and v = 30 mph.So, t = d/v
= 10/30
= 1/3 h
Time to cover next 10 miles
Also, when the car travels the next 10 miles at an average speed of 50 miles per hour,
d' = 10 mi and v' = 50 mph.So, t' = d'/v'
= 10/50
= 1/5 h
Time to cover 20 miles
The total time for the 20 miles is T = t + t'
= 1/3 h + 1/5 h
= (5 + 3)/15 h
= 8/15 h
Average speed for 20 miles
So, the average speed for the 20 miles is v = D/T where
D = 20 miles and T = 8/15 h.So, v = D/T
v = 20 mi ÷ 8/15 h
v = 20 × 15 mi/8 h
v = 2.5 × 15 mi/h
v = 37.5 mph
So, the average speed, in miles per hour, of the car for the 20 miles is 37.5 mph
Learn more about average speed here:
https://brainly.com/question/24739297
Can anyone help me on this?
Answer:
Out of the two sums, B is the closest to the value to 1/2.
Steps for A:
Change 1/3 to 5/15
2+5/15
= 7/15
7/15 as a decimal: 0.46
0.50 - 0.46 = 0.04
Steps for B:
Change 6/7 to 18/21
Change 1/3 to 7/21
18-7/21
= 11/21
11/21 as a decimal: 0.52
0.52 - 0.50 = 0.02
Three students, Alicia, Benjamin, and Caleb, are constructing a square inscribed in a circle with center at point C.
Alicia draws two diameters and connects the points where the diameters intersect the circle, in order, around the circle.
Benjamin tells Alicia that she was not being very accurate. He says that the diameters must be perpendicular to each other. Then she can connect the points, in order, around the circle.
Caleb tells Alicia and Benjamin that he doesn’t need to draw the second diameter. He says that because a triangle inscribed in a semicircle is a right triangle, he will simply draw two such triangles, one in each semicircle. Together the two triangles will make a square.
Who is correct?
Only Alicia is correct.
Only Benjamin is correct.
Only Caleb and Benjamin are correct.
Only Caleb is correct.
Alicia, Benjamin, and Caleb are all correct
FInd the area of the shaded polygon
120 sq.un
area of parallelogram = base * height
Here given the following,
base = 15height = 8 area of shaded polygon: 15 * 8 = 120 sq.unHELPP this is due tomorrow
254 people were surveyed regarding their favorite gemstone 54%chose diamonds 6%chose saphires 30% chose emeralds 10% rubies. How many people did not choose emeralds or rubies?
Answer:
152.4
Step-by-step explanation:
30%+10%=40%
100%-40%=60%
254*0.60=152.4
A flower bouquet contains pink roses, red roses, pink carnations, and red carnations. One third of the pink flowers are roses, three fourths of the red flowers are carnations, and six tenths of the flowers are pink. What percent of the flowers are carnations
= 70% of the flowers are carnations
How do you find the probability of an outcome?Probability tells you which outcome is more likely to occur in any given event. You could determine the probability of the particular outcome by dividing the number of times that the outcome has occurred by the total no of events.
we are given that,
6/10 = 3/5 of the flowers are pink, do
we know .2/5 of the flowers are red .
Since 1/3 of the pink flowers are roses, 2/3 of
the pink flowers are on Carnations .
we are given that 2/4 of the red
flowers are carnations .
The number carnations are
[tex]\frac{3}{5} * \frac{2}{3} + \frac{2}{5} * \frac{3}{4}[/tex]
[tex]=\frac{2}{5} +\frac{3}{10}[/tex]
[tex]= \frac{4 + 3}{10}[/tex]
[tex]=\frac{7}{10}[/tex]
covert into percent
[tex]=\frac{7}{10} 100[/tex]
= 70%
Learn more about Probability here https://brainly.com/question/11234923
#SPJ2
necesito saber como se resuelve esto (:
Answer:
Cómo escribir las fracciones en letras?
Así, cuando vayas a leer una fracción, primero menciona el numerador, luego el tipo de partes que se están tomando. Por ejemplo, la fracción se lee siete novenos, y significa que se tomaron siete partes, después de dividir la unidad en nueve.
Step-by-step explanation:
The graph of the function is of the form
f(x) = a * sin(kc – c) + h.
HELLLLLLLLLLLLLLLLP 8TH GRADE MATH IM TIMED HELLLLLLLLLLLLLLLLLLLLLLP
Answer:
the answer for question 15 is going to be D. since wen u draw the line on a graph there is only one point that connects to the points we are given in the question so it's (-8,4)
pleaseeeeeeeeee help math
Answer: 8
Step-by-step explanation: to find 20% multiply 40 by .20
2=x^2-10x solve by completing the square
[tex]2=x^2-10x\\\\\implies x^2 -10x =2\\\\\implies x^2 -2\cdot 5 x +5^2 -5^2 = 2\\\\\implies x^2 -2\cdot 5x +5^2 = 2+5^2 \\\\\implies (x-5)^2 = 27\\\\\implies x-5 = \pm\sqrt {27}\\\\\implies x = \pm\sqrt{27} +5=\pm3\sqrt{3}+5\\\\\text{Hence,}~ x = 5+3\sqrt 3~\text{or}~ x = 5-3\sqrt 3[/tex]
Write a recursive formula for a n a n , the n th n th term of the sequence 6 , − 12 , 24 , . . .
Answer:
See below ↓↓
Step-by-step explanation:
a₁ refers to the first term of the sequence.
That is clearly : a₁ = 6
The formula for the nth term is :
aₙ = a₁rⁿ⁻¹Common ratio (r) = quotient of consecutive termsr = -12/6 = -2Therefore, the nth term is :
aₙ = 6(-2)ⁿ⁻¹If the distance between A(x,3) and B(4.3) is 16 units, find the value of x.
Answer:
[tex] - 12[/tex]
Step-by-step explanation:
[tex]x1 = x \: \: y1 = 3 \\ x2 = 4 \: \: y2 = 3 \\ distance \: betwen \: two \: points = \sqrt{(x2 - x1) {}^{2} +( y2 - y1) {}^{2} } \\ 16= \sqrt{(4 - x) {}^{2} + (3 - 3) {}^{2} } \\ 16 = \sqrt{(4 - x) {}^{2} + 0} \\ 16 = \sqrt{(4 - x) {}^{2} } \\ 16 = 4 - x \\ 16 - 4 = - x \\ 12 = - x \\ x = - 12[/tex]
m ∠ 1 = ______ °
m ∠ 2 = ______ °
m ∠ 3 = ______ °
Answer:
M < 1=180
M<2=90
M<3=90
Step-by-step explanation:
M 2 and 3 are both right angles and m1 is a obtuse angle
the circumference of a circle exceeds the diameter by 60 cm. Find the radius of the circle.
Answer:
14 cm
Step-by-step explanation:
hope this helps :)
Whats the rate of change for (0,3) and (2,-5)
Answer:
[tex]\boxed{\sf{-4}}[/tex]Step-by-step explanation:
Solve a slope using a rate of change.
Slope:
[tex]\sf{\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{rise}{run} }[/tex]
⇒ y2=(-5)
⇒ y1=3
⇒ x2=2
⇒ x1=0
Rewrite the problem down.
⇒ (-5)-3/2-0
Solve.
⇒ -8/2
Divide.
⇒ -8/2=-4
Therefore the slope is -4, which is our answer.I hope this helps you! Let me know if my answer is wrong or not.
Which exponential model best represents the data? O f(x) = 3(1.2) O f(x) = 2(0.3)* O f(x) = 2(3)* O f(x) = 3(0.2)*
The exponential model has an initial value of 3
The exponential model of the data is f(x) = 3 * (1.2)^x
How to determine the exponential model?From the complete question,we have the following parameters:
Initial value, a = 3Growth rate, r = 0.2The exponential model is then calculated as:
f(x) = a * (1 + r)^x
Substitute known values
f(x) = 3 * (1 + 0.2)^x
Evaluate the sum
f(x) = 3 * (1.2)^x
Hence, the exponential model of the data is f(x) = 3 * (1.2)^x
Read more about exponential models at:
https://brainly.com/question/7296382
Answer:
f(x)=3(0.2)^x
Step-by-step explanation:
When x=0
f(0)=3
When x =1
f(1)=0.6
3 x 1.2 =3.6, 3 x 0.2=0.6
So then I just chose f(x)=3(0.2)^x and I got it correct on the quiz :)
The scale of a model train is 1 inch to 15 feet. One of the cars of the model train is 3.7 inches long. What is the length, in feet, of the actual train car?
Answer:
35.7
Step-by-step explanation:
1 inch = 15ft
15x3= 35
and the .7 is added
35.7 ft I think
HELPPPPPP PLSSSSSSSS
Answer:
hmmmm help rin ako po please
The figure shows the dimensions of a room. How much carpet is needed to cover its floor? 15 ft 10 ft
Answer:
150 ft² of carpet is needed
Step-by-step explanation:
Dimensions of the floor :
15 ft (length)10 ft (width)∴ Area of carpet required = Area of floor
Area of floor
length x width15 ft x 10 ft150 ft² of carpet is neededArea:-
Length×widthLB15(10)150ft^2What is the area of one of the small trapezoids? show your work and explain your reasoning.
Kiran has a toy car collection. He keeps some in a display case and the rest on the wall. 195 of his toy cars are on the wall, and 35% of his toy cars are in the display case. What is the total number of toy cars in Kiran's collection?
35% are in display cases which means 65% are on the wall.
this means 195 cars is 65% of the collection.
to get total number of cars in the collection divide 195 by 65%
195/0.65 = 300
answer: 300 total cars
Estimate the perimeter of the figure on number 3
Answer:
13.5
Step-by-step explanation:
i just counted the whole squares and then counted the half and divided that number by 2 and added that number to the first number
9 + (9/2)
9 + 4.5
13.5
During a big race, Jeff races his car at a rate of 125 miles per hour for 3.2 hours. What is the distance of the race?
Answer:
unoriginal presidential play insisting that the president is a little more aggressive and more aggressive 6PM to the
Solve the folllowing question-->2e+3=5
Answer:
[tex]\boxed{\sf{e=1}}[/tex]Step-by-step explanation:
Isolate the term of e from one side of the equation.
2e+3=5First, you subtract by 3 from both sides.
⇒ 2e+3-3=5-3
Solve.
Subtract the numbers from left to right.
⇒ 5-3=2
Rewrite the problem down.
⇒ 2e=2
Divide by 2 from both sides.
⇒ 2e/2=2/2
Solve.
Divide the numbers from left to right.
⇒ 2/2=1
⇒ e=1
Therefore, the correct answer is e=1.I hope this helps you! Let me know if my answer is wrong or not.
Answer:
e = 1
Step-by-step explanation:
Subtract 3 both sides:
⇒ 2e + 3 = 5
⇒ 2e + 3 - 3 = 5 - 3
⇒ 2e = 2
Divide both sides by 2:
⇒ 2e = 2
⇒ 2e/2 = 2/2
⇒ e = 1
]
02:14:59
The vertices of a quadrilateral in the coordinate plane are known. How can the perimeter of the figure be found?
O Use the distance formula to find the length of each side, and then add the lengths.
O Use the slope formula to find the slope of each of side, and then determine if the opposite sides are parallel.
O Use the slope formula to find the slope of each of side, and then determine if the consecutive sides are perpendicular.
O Use the distance formula to find the length of the sides, and then multiply two of the side lengths.
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Docs
Answer:
its A: Use the distance formula to find the length of each side, and then add the lengths.
Step-by-step explanation:
Pls give me brainlist.
SOMEONE PLEASE HELP ME WITH THIS!!
IMAGE DOWN BELOW!!
ILL GIVE YOU BRAINLIST ANSWER!!
Answer:
5.946
Step-by-step explanation:
The pythogorean theorem states that a^2+b^2=c^2.
We are given the hypotenuse, c, and a side length.
3.5^2+b^2=6.9^2
12.25+b^2=47.61
b^2=35.36
b=5.9464...., rounded to 5.946
The movie started at 7:35 PM and lasted 1 hour and 40 minutes. What time did
the movie end?
Answer:
9:15 PM
Step-by-step explanation:
1 hour and 40 minutes after 7:35 is 9:15
