Answer:
Liliana tiene 10 años.
Step-by-step explanation:
Definamos las variables:
E = edad de Ericka
L = edad de Liliana.
Primero sabemos que la edad de Ericka es el triple de la edad de Liliana, entonces:
E = 3*L
Tambien sabemos que hace 9 años la suma de sus edades era 22
Hace nueve años la edad de Ericka era E - 9
Y hace nueve años la edad de Liliana era L - 9
Entonces tenemos:
(E - 9) + (L - 9) = 22
Así, tenemos un sistema de dos ecuaciones:
E = 3*L
(E - 9) + (L - 9) = 22
Queremos conocer la edad actual de Liliana.
Para ello tenemos que despejar E en una de las ecuaciones.
Podemos ver que en la primer ecaución E ya está aislada, entonces nos saltamos ese paso.
Ahora, reemplazamos E en la otra ecuación:
(E - 9) + (L - 9) = 22
(3*L - 9) + (L - 9) = 22
Ahora podemos resolver esto para L
3*L - 9 + L - 9 = 22
4*L - 18 = 22
4*L = 22 + 18
4*L = 40
L = 40/4 = 10
L = 10
Liliana tiene 10 años.
How did I get this????
A small pyramid has 3 stones at the top and 2 more stones in each
layer below this. If the pyramid has 19 layers, how many stones are in the pyramid?
- Help please ?!
Answer
93
Step-by-step explanation:
There are 399 stones in the pyramid of 19 layers if there are 3 stones at the top and 2 more stones in each layer below this
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
A small pyramid has 3 stones at the top and 2 more stones in each layer below this. This can be represented as an arithmetic progression with first term (a) = 3 and difference (d) = 2, hence:
number of stones in 19 layers = [tex]\frac{19}{2}(2(3)+(19-1)2)=399[/tex]
There are 399 stones in the pyramid of 19 layers if there are 3 stones at the top and 2 more stones in each layer below this
Find out more on equation at: https://brainly.com/question/2972832
#SPJ2
Which line is perpendicular to a line that has a slope of -5/6?
Answer:
P
Step-by-step explanation:
please help!! I'm really confused :(
CHICKEN EXPERTS HELP PLEASE One of my chicks wont stop chirping and has half of its body (the bum) with dry feathers. Is it sick? Its been with other chicks and chickens and was doing perfectly fine until today. If so, is it contagious and how long do you think it takes to spread? If I clean myself will it decrease risks?
An online T-shirt store is having a sale. The original price of each T-shirt is p dollars. The store sells 20 T-shirts and earns a total of (20p−60) dollars.
a. Factor the expression using the GCF.
20p−60=
b. The discount per T-shirt is $
if you put a link i will report
Answer:
it's a factor the expression using GCF
PLEASE HELP, I REALLY NEED IT!!
Answer: The answer for the first one is (75,25) and the second one is No
Step-by-step explanation:
1. when the football, is 25 feet high, it has traveled 75 feet abd that is it's highest point
2. No, because when you convert 45 yards to feet it is only going to be 9ft in height.
I hope this helps
Please help I need help
Answer:
x=10
Step-by-step explanation:
To solve for x, you need to draw an imaginary line connecting the right end of side x to the left side with length 15. This forms a triangle with side lengths 6 and 8, and hypotenuse x. Using the Pythagorean Theorem to solve for x, we get 6^2 + 8^2 = x^2, 36 + 64 = 100, [tex]\sqrt{100}[/tex] = 10.
Answer:
It's 10
Step-by-step explanation:
C^2=A^2+B^2blank
C=√(A^2+B^2)
If c is x and a and b are the side lengths the we can use Pythagoras's theorem to calculate the length of the line. A=6 B=8 and in the end when you calculate all that doohickey stuff you get x=10
what is the gradient for the table x y
-6 -10
-3 -8
3 -4
6 -2
Solution :
Let, equation of line is y = mx + c .
Here, m is the slope( or gradient ) of the line and c is the y-intercept .
Putting point ( -6, -10 ) in above equation, we get :
-10 = -6m + c ...1)
Also, putting point ( -3, -8 ) in above equation, we get :
-8 = -3m + c ...2)
Solving equation, 1) and 2) we get :
[tex]m = \dfrac{2}{3}\ and \ y = - 6[/tex]
Therefore, the gradient for the given x-y table is [tex]\dfrac{2}{3}[/tex] .
the volume of a square pyramid is 200 inch squared and the side length is 10. What is the height of the pyramid?
Answer:
6
Step-by-step explanation:
https://www.calculatorsoup.com/calculators/geometry-solids/pyramid.php is a great calculator for this.
What is the rule for the reflection ?
Answer:
This idea of reflection correlating with a mirror image is similar in math.
This complete guide to reflecting over the x axis and reflecting over the y axis will provide a step-by-step tutorial on how to perform these translations.
First, let’s start with a reflection geometry definition
Math Definition: Reflection Over the X Axis
A reflection of a point, a line, or a figure in the X axis involved reflecting the image over the x axis to create a mirror image. In this case, the x axis would be called the axis of reflection.
Math Definition: Reflection Over the Y Axis
A reflection of a point, a line, or a figure in the Y axis involved reflecting the image over the Y axis to create a mirror image. In this case, theY axis would be called the axis of reflection.
What is the rule for a reflection across the X axis?
The rule for reflecting over the X axis is to negate the value of the y-coordinate of each point, but leave the x-value the same.
Arrange these numbers in order, starting from the smallest. 3/4 , 0 , -1 , -17/20 , -4/5
Answer:
-1, -17/20, -4/5, 0, 3/4
Step-by-step explanation:
Answer:
-1, -17/20, -4/5, 0, 3/4
Please help me with this problem
Answer:
9xy = 3x . 3y
2xyz = 2x . y . z
4x . 4y = 16xy
Answer:
1, 4, 5.
Step-by-step explanation:
1. 3x * 3y is equal to 9y.
4. 2x * y * z is equal to 2xyz, since the grouped variables mean the same thing as multiplied.
5. 4x * 4y is 16xy, because 4 * 4 is 16 and x * y is xy.
A bag is filled with red marbles and blue marbles. There are 54 total marbles in the bag and 1/3 of the marbles are blue. Choose the correct option for each
main khud dhoond rha tha asignment ke waqt
explain how to find the missing side of a right triangle when given an acute angle and one side
Answer: Measure out all the triangles and then subtract from the total and then their is your answer.
What is the slope of the line that contains the points (14,-2) and (3,-2)
Answer:
0
Step-by-step explanation:
We can use the slope formula since we have two points
m = ( y2-y1)/(x2-x1)
= ( -2- -2)/(3-14)
= ( -2+2)/(3-14)
= 0/-11
= 0
Answer:
0 is the slope of the line that contains the points (14,-2) and (3,-2)
Step-by-step explanation:
We have two points which are ( 14 , -2) and ( 3, -2).To find , the slope is the slope of the line that contains the points (14 , -2)and (3, -2)
we using slope formula which is
m = ( y ² - y ¹ ) / ( x ² - x ¹)Where,
m , is the slope
( y ² - y ¹ ) = ( 14 , - 2)
( x ² - x ¹) = (3, -2 )
Substitute the values into the formula
m = (( -2 )- ( -2 ) ) / (3 - 14 )
m= ( -2 + 2 ) / ( 11)
m = 0 / 11
m = 0
Therefore , 0 is the slope of the line that contains the points (14,-2) and (3,-2)
You start driving west for 9 miles, turn right, and drive north for another 6 miles. At the end of driving, what is your straight line distance from your starting point? Round to the nearest tenth of a mile.
Answer:
10.8 mi
Step-by-step explanation:
Picture a right triangle with legs 9 mi and 6 mi. Applying the Pythagorean Theorem (d² = a² + b²), we get:
(9 mi)² + (6 mi)² = 117 mi²
This is the square of the hypotenuse (the desired distance).
Taking the square root of both sides, we get d = √(117 mi) ≈ 10.8 mi = d
The desired straight line distance traveled is 10.8 mi
Consider the transformation f(x) = 1/5 (5^1/2+3) - 6
a) Describe the transformations that are applied to the base function.
b) State the y-intercept.
c) State the equation for the asymptote.
d) State the domain and range.
please solve for me simplify (45)-(+14)
Answer:
ur answer is 31
Step-by-step explanation:
(45)-(+14)
(-) and (+) would equal -
45-14=31
[tex]31[/tex] ✅
Step-by-step explanation:
[tex](45) - ( + 14) \\ R emoving \: the \: brackets, \: we \: have \\ = 45 - 14 \\ = 31[/tex]
Note:-
[tex]\sf\purple{BODMAS\: rule.}[/tex]
B = Brackets
O = Orders
D = Division
M = Multiplication
A = Addition
S = Subtraction
[tex]\sf\red{(-)\:x\:(+)\:=\:-}[/tex]
[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{!}}}}}[/tex]
sin 24 degrees = 12.1/ x
Answer:
29.749
Step-by-step explanation:
cross multiply sin with x, and then divide sin and divide 12.1 by sin24
Help in this question, Give right answer be brainliest
Write an equation of a line that passes through the points (1, 7) and (5, 19) . Give the final form in slope intercept form. (Please no fake answers or Links)
Answer:
y = 3x + 4
Step-by-step explanation:
slope = (y2 -y1)/(x2 - x1)
y2 = 19
y1 = 7
x2 = 5
x1 = 1
Slope = (19 - 7)/(5 - 1)
slope = 12 / 4
slope = 3
So far what you have is
y = 3x + b To solve for b, use either of the two points.
x = 1
y = 7
7 = 3(1) + b
7 = 3 + b
b = 4
The final equation is
y = 3x + 4
We should check that with the other point
x = 5 Find y
y = 3(5) + 4
y = 15 + 4
y = 19 Ans it checks.
What is the volume of a cylinder if the radius is 7cm and the height is 15.5cm?
Answer:
2384.83 cm³
Step-by-step explanation:
Volume = πr² * h
Volume = 3.14 * 7² * 15.5
Volume = 3.14 * 49 * 15.5
Volume = 2384.83
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
A jeweler buys a ring from a jewelry maker for $125. He marks up the price by 135% for sale in his store. What will the selling price (retail price) of the ring be?
Answer:
$167.4 If its helpful heart it!
Step-by-step explanation:
135% of 125 is 167.4
Answer:
315.78$
Step-by-step explanation:
Find the slope of the line that passes through the pair of points
(-9,-6), (5,-1)
A -5/14
B undefined
C 5/14
D 14/5
Answer:
5/14
Step-by-step explanation:
To find the slope using two points
m = ( y2-y1)/(x2-x1)
= ( -1 - -6)/( 5 - -9)
= ( -1 +6)/ ( 5+9)
5/14
Choose all points that lie on a circle with Center (2, -3) and diameter 10 units.
Answer:
the points that lie on a circle is (2,2) and (5,-7)
Find the blanks
A circle is centered at the point (-7, -1) and passes through the point (8, 7).
The radius of the circle is blank
units. The point (-15, blank) lies on this circle.
Answer:
c
Step-by-step explanation:
Factor completely 18x2 − 21x −15. 3(2x + 1)(3x − 5) 3(2x − 5)(3x + 1) 3(2x − 1)(3x + 5) 3(6x + 1)(x − 5)
Answer:
3(2x + 1)(3x - 5)
Step-by-step explanation:
Given
18x² - 21x - 15 ← factor out 3 from each term
= 3(6x² - 7x - 5 ) ← factor the quadratic
Consider the factors of the product of the x² term and the constant term which sum to give the coefficient of the x- term.
product = 6 × - 5 = - 30 and sum = - 7
The factors are + 3 and - 10
Use these factors to split the x- term
6x² + 3x - 10x - 5 ( factor the first/second and third/fourth terms )
3x(2x + 1) - 5(2x + 1) ← factor out (2x + 1) from each term
(2x + 1)(3x - 5)
Then
18x² - 21x - 15 = 3(2x + 1)(3x - 5)
Answer:
A
Step-by-step explanation:
George and his dad are planning to attend the state fair. An adult ticket is $19.00. The price of an adult ticket is one third the price of a student ticket plus $15.00. Write an equation to determine how much George will pay for a student ticket.
Answer:
$19 × 3 + $15 + $1=answer? I think
1. Circle the following scenarios that are DEPENDENT events.
a) Flipping a coin three times.
b) Taking two pieces of candy out of a bag.
c) Picking four students to volunteer to read.
d) Hitting a red light three days in a row.
e) Spinning a wheel and getting a prize twice.
f) Getting four hearts in a row from a deck of cards.
Hitting a red light three days in a row