Answer:
x = 18 cm
Step-by-step explanation:
(4x)^2 = 3(4x)(x+6)
16x^2=3(4x)(x+6)
divide both sides by 4x
4x = 3(x+6)
4x=3x+18
x = 18
i will mark brainliest!! i need help with 3 and 4
Jenny is 9 years younger than Sammie. Five years ago Sammie was 4 times older than Jennie. How old is each now?
Pls Help Need Answer By 7:00.
Jenny is 8 years old and Sammie 17 is years old.
Given that:Jenny is 9 years younger than Sammie.Five years ago, Sammie was 4 times older than Jennie.To find:Current age of Jennie and Sammie
Calculation and Explanation.Let the current age of Jennie be x.
Let the current age of Sammie be y.
Then from given data we have:
[tex]x = y-9\\4(x-5) = (y-5)[/tex]
We'll substitute value of x from equation 1 in equation 2:
[tex]4(y-9-5) = (y-5)\\3y = 51\\y=17[/tex]
Thus, from equation 1 and y = 17, we have:
[tex]x=y-9\\x=17-9\\x=8[/tex]
Thus, Jenny is 8 years old and Sammie 17 is years old.
Learn more about age difference related posts here:
https://brainly.com/question/4159273
Answer:
Jenny is 8 years old and Sammie 17 is years old.
Notes:
Please make me the brainliest! I worked hard on this.
what type of angle is ABC help
Answer:
it is a right angle
Step-by-step explanation:
25+65=90
90 degrees is a right angle
Help would suffice
Answer: Yes
Step-by-step explanation:
x = 9 in (9, 8)
The inequality is x is less than or equal to 9
x = 9 so the point satisfies the inequality.
Yes
the interval between 3:15 p.m. to 8 p.m. is
Answer:
4 hours and 45 minutes
Step-by-step explanation:
The only thing you have to do is subtract 8 by 3:15 which is 4:45. 4:45 means that it its 4 hours and 45 minutes.
Hope this helps
What is 7/10 x 5/8?
Give your answer in its simplest form.
2k+16=30 i need help with this before March 2nd ASAP
Answer:
k = 7
Step-by-step explanation:
The goal is to solve for the variable k in this problem.
To do this, we need to get k by itself!
2k + 16 = 30
Start by subtracting the 16 over from the left side to the right
2k + 16 - 16 = 30 - 16
Simplify by subtracting 16 from 16 on the left side (which is 0) and 16 from 30 on the right side (which is 14).
2k = 14
Then finish by dividing both sides by 2 to get k by itself.
[tex]\frac{2k}{2}[/tex] = [tex]\frac{14}{2}[/tex]
Simplify by dividing 2 by 2 on the left side (which is 1) and 14 by 2 on the right side (which is 7).
k = 7
[tex]\huge\text{Hey there!}[/tex]
[tex]\huge\textbf{Equation:}[/tex]
[tex]\mathbf{2k + 16 = 30}[/tex]
[tex]\huge\textbf{Solving for:}[/tex]
[tex]\mathbf{2k + 16 = 30}[/tex]
[tex]\huge\textbf{Subtract \boxed{\bf 16} to both sides:}[/tex]
[tex]\mathbf{2k + 16 - 16 = 30 - 16}[/tex]
[tex]\huge\textbf{Simplify it:}[/tex]
[tex]\mathbf{3k = 30 - 16}[/tex]
[tex]\mathbf{2k = 14}[/tex]
[tex]\huge\textbf{Divide \boxed{\bf 2} to both sides:}[/tex]
[tex]\mathbf{\dfrac{2k}{2} = \dfrac{14}{2}}[/tex]
[tex]\huge\textbf{Simplify it:}[/tex]
[tex]\mathbf{x = \dfrac{14}{2}}[/tex]
[tex]\mathbf{x = 14\div2}[/tex]
[tex]\mathbf{x = 7}[/tex]
[tex]\huge\textbf{Therefore, your answer should be:}[/tex]
[tex]\huge\boxed{\mathsf{k = }\frak{\ 7}}\huge\checkmark[/tex]
[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]I'm Chloe can you help me, Thanks :)
Which ordered pair is the solution to the system of linear equations?
5x + y= -4
x =-y -2
Answer:
Hola losiento no se ablar inglés
I am so confused, plz help! I will mark brainliest.
Answer:
-45
Step-by-step explanation:
convert 18600 into km
Answer:
29933.7984 km
Step-by-step explanation:
if 2 men and 3 boys can do a piece of work in 8 days whole 3 men and 4 boys will do it in:
A. 3 days
B. 4 days
C. 5 days
D. 6 days
Answer:
I think D. 6 days
Step-by-step explanation:
let me know if im wrong..
Graph y=−4x+3 Please I really need help on it It.
Answer:
Download graphing calc it helps a lot <4
Solve the system by graphing.
y = −x + 3
y = −3x − 1
The solution of the system
Answer:
A(-2,5)
x= -2 , y=5
Step-by-step explanation:
draw the lines for both equations and that will be by finding any points in the lines:
1. sub any value for x to find y in the equation (y=-x+3) :
When x=0 ⇒ y=-0+3, y=3 (the point is: (0,3)When x=1 ⇒ y= -1 +3 , y=2 (the point is: (1,2)When x=2 ⇒ y=-2+3, y=1 (the point is: (2,1)When x=-1 ⇒ y=-(-1)+3, y=4 (the point is: (-1,4)When x=-2 ⇒ y=-(-2)+3, y=5 (the point is: (-2,5)plot the points in the graph and match them to get the first line for equation(1).
2. sub any value for x to find y in the equation (y=-3x-1) :
When x=0 ⇒ y=-3(0)-1, y=-1 (the point is: (0,-1)When x=1 ⇒ y=-3(1)-1, y=-4 (the point is: (1,-4)When x=2 ⇒ y=-3(2)-1, y=-7 (the point is: (2,-7)When x=-1 ⇒ y=-3(-1)-1, y=2 (the point is: (-1,2)When x=-2 ⇒ y=-3(-2)-1, y=5 (the point is: (-2,5)Now again plot the points in the same graph and match them to get the second line for equation(2).
When you finish you will have two lines drawn in a graph, the solution will be were the two points intercept, and that will be:
A(-2,5)
x= -2 , y=5
(note: you can check your answer by subbing the value of x in both equations and you should get the answer 5 as the value of y)
rate her 1-10 for a study
Answer:
100,000,000,000,000,000
Ursula surveyed 50 classmates about their favorite ice cream flavors. Each classmate chose one flavor. The results are shown in the circle graph.
How many more of Ursula's classmates chose chocolate than chose vanilla?
A. 8
B. 6
C. 34
D. 16
Answer:
A
Step-by-step explanation:
8
Answer:
8
Step-by-step explanation:
Find the percent: 50 x 0.42 minus 50 x 0.26 because you find 26 by adding the known and subtracting from 100.
Answer 21-13=8
Which is true about the position of A on the number line?
A. It is less than -1
B. It is greater than 0
C. It is less than -8/3
D. It is greater than 3/4
show your work please :)
Step-by-step explanation:
yphñotdtowtkstlstoyosotstlstlstosupfhñznx$*□◇○}₩○¥■○♧■▪︎■♧○¥□•¥{•£{•£{{£•{¥{¥•£□•□£●£•●£$>£|•
Write an equation in point-slope form for the line that passes through each point with the given slope (-1,-2) m= 3
Answer:
y + 2 = 3(x + 1)Step-by-step explanation:
The Point-Slope form of equation of a line with slope of "m" and passing through point (x₁, y₁) is: y - y₁ = m(x - x₁)
m = 3
x₁ = -1
y₁ = -2
Therefore the equation:
y - (-2) = 3(x - (-1))
y + 2 = 3(x + 1)Dan buys a car for £700.
It depreciates at a rate of 5.5% per year.
How much will it be worth in 6 years?
Give your answer to the nearest penny where appropriate
Answer:
£469
Step-by-step explanation:
Given the following
Original cost of car = £700.
Depreciation rate = 5.5%
Depreciation amount after 1 year = 5.5% * 700
Depreciation amount after 1 year = 0.055 * 700
Depreciation amount after 6 year =6 * 38.5 = £231
Worth after 6 years = £700 - £231
Worth after 6 years = £469
The correct answer is:
£498.53
Consider JKL below. Determine whether each equation is correct. Select correct or incorrect next to each question.
From the options equation A and D are correct answers.
What are trigonometric ratios?The sides and angles of a right-angled triangle are dealt with in Trigonometry. The ratios of acute angles are called trigonometric ratios of angles. The six trigonometric ratios are sine (sin), cosine (cos), tangent (tan), cotangent (cot), cosecant (cosec), and secant (sec).
In the given triangle JKL, JK=25, JL=7 and LK=24.
We know that, sin θ= Perpendicular/Hypotenuse
tan θ= Perpendicular/Base
A) Now, sin J=LK/JK
sin J= 24/25
B) tan J=LK/JL
tan J=24/7
C) sin K=JL/JK
sin K=7/25
D) tan K=JL/LK
tan K=7/24
Therefore, from the options equation A and D are correct answers.
Learn more about the trigonometric ratios here:
brainly.com/question/25122825.
#SPJ2
Select the equation that is equivalent to the equation y-3=2(x+5)
how do you find the area of a trapezoid that is on a rectangle
Answer:
To find the area of a trapezoid, multiply the sum of the bases (the parallel sides) by the height (the perpendicular distance between the bases), and then divide by 2.
Hope that helps!
$1,200 in sales with 4% commission
Answer: 48 dollars
Step-by-step explanation:
Which of the following describes the way substances diffuse in and out of a cell?
A.Substances move from lesser to greater concentration.
B.Substances move back and forth across the membrane equally.
C.Substances move across the membrane when energy is available.
D.Substances move from greater to lesser concentration.
Answer please it would help me alot and thx
Answer:
Its D. Substances move greater to lesser concentration
In simple diffusion, small noncharged molecules or lipid soluble molecules pass between the phospholipids to enter or leave the cell, moving from areas of high concentration to areas of low concentration (they move down their concentration gradient). Oxygen and carbon dioxide and most lipids enter and leave cells by simple diffusion.
Have a nice day
Answer:
the answer is D.
Step-by-step explanation:
im answering so the other person can get brainliest :)
☁️☁️☁️☁️☁️☁️
EIGHTH GRADE MATH PLEASE HELP!!
1. Tickets to the fair cost $7 for children and $14 for adults. On Wednesday, 178 people enter the fair and collected $1848. What number of children and what number of adults attended?
2. Tickets to the fair cost $5 for children and $11 for adults. On Tuesday, 164 people enter the fair and collected $1270. What number of children and what number of adults attended?
Answer:
1, is So this means the answer is 81 children and 96 adults.
2, 250 $5 tickets and 100 $11 tickets were sold
Step-by-step explanation:
--- To solve this, you can use quadratics. x + y = 177 and 4x + 11y = 1380 are the equations to solve for x and y. 177 is the total amount of people who entered the fair, and 1380 is the total money earned. x is the amount of children entered, while y is the amount of adults entered. If we were to do 4(x + y = 177), the equation would become 4x + 4y = 708. Then, we minus the 2 equations together, eliminating the x so we can solve for y. So, the final equation is 7y = 672, meaning y = 96. If we bring this into the first equation, x + y = 177, we can find that x = 81.
help me please thank you
Answer:
b)30 boys c)1425 beats
Step-by-step explanation:
Answer:
Step-by-step explanation:
b and g are the number of boys and girls, respectively.
b:g = 3:4
b = 3x, g = 4x
3x+4x = 70
x = 10
There are 30 boys.
:::::
(380 beats)/(4 minutes) = (380/4 beats)/minute = (95 beats)/minute
15 minutes × (95 beats)/minute = 1425 beats
Acellus
Meg has 11 hats and she buys 1 new hat
every month. Fanny has 1 hat, but plans
to buy 3 every month. How many months (m)
will it be until Fanny has as many hats as Meg?
h = m +11
h = 3m +1
[?] months
Enter
[tex]\\ \sf\Rrightarrow m+11=3m+1[/tex]
[tex]\\ \sf\Rrightarrow m-3m=1-11[/tex]
[tex]\\ \sf\Rrightarrow -2m=-10[/tex]
[tex]\\ \sf\Rrightarrow m=-10/-2 [/tex]
[tex]\\\sf \Rrightarrow m = 5[/tex]
Any helppp pLeAsE? T^T
answer:
c = 7.6 kilometers
step-by-step explanation:
you can use the pythagorean theorem for this since this is a right triangleknow the formula: a^2 + b^2 = c^2now plug in what we know, also remember:
a = legb = the other legc = hypotenusea^2 + b^2 = c^2
3^2 + 7^2 = c^2
9 + 49 = c^2
58 = c^2
c = 7.6157
rounded: c = 7.6 kilometers
A clothing store manager uses a 12 percent markup on the merchandise. At what price will he sell pants that were purchased for $40?
Answer:
i think this is right $4.80
Step-by-step explanation:
Can you guys help me please
Answer:
a = 42
Step-by-step explanation:
2a + 16 + 80 = 2a + 96
2a + 96 = 180
2a = 84
a = 42