Renee wants to solve the system of equations. Which number can she multiply the first equation by so that when the two equations are added together, the y term is eliminated?
Two-thirds x + one-fifth y = 6
One-sixth x minus 3 y = 8
A.-15
B.-5
C.5
D.15
Answer:
eliminate D
Step-by-step explanation:
Answer:
Multiply the first equation by 15 (Answer D)
Step-by-step explanation:
Writing these equations symbolically, we have:
(2/3)x + (1/5)y = 6
(1/6)x - 3y = 8
Which number can she multiply the first equation by so that when the two equations are added together, the y term is eliminated? After this multiplication, we should have +3y in the first equation; then 3y - 3y = 0 as desired. The coefficient of the y term in the first equation is (1/5), whereas we want it to be +3.
Multiplying the first equation by 15, we get 10x + 3y = 90.
Then our system is:
10x + 3y = 90
(1/6)x - 3y = 8
---------------------
(61/6)x = 98 (the variable y has been temporarily eliminated).
An element with a mass of 630 grams decays by 30% per minute. To the nearest minute, how long will it be until there are 30 grams of the element remaining?
Answer:
It should take somewhere 9 minutes to decay until there are 30 grams remaining.
Step-by-step explanation: I just estimated
help with this question please and thanks in advance
Angle measurements 84 degree help find out what’s the other side degree
Answer: 84 degrees
Step-by-step explanation: because of corresponding angles
What’s the answer?? To question 4
Answer:
jkjkjkjkjkjk
Step-by-step explanation:
jkjkjkjkjkjkj
Help me out on this question
Is it
A. 4p=8
B. 8p=4
C. 4+p=8
D. 8+p=4
(Extra points)
I will mark you as Brainly
Answer:
pretty sure it's C. don't mark my word
Al precio de un producto se le aplica un descuento del 30% y al nuevo precio otro descuento del 30% cual es el descuento total?
Answer:
The total discount is 51%.
Step-by-step explanation:
A 30% discount is applied to the price of a product and another 30% discount to the new price. What is the total discount?
Let the price is p.
After first discount, the price is
= 70% of p = 0.7 p
After second discount, the price is
= 70% of 0.7 p
= 0.7 x 0.7 p
= 0.49 p
So, let the total discount is d.
[tex]d = \frac{p - 0.49 p}{p}\times 100 = 51%[/tex]
The diameter of a strand of rope is 1.2 ×10^-3 inch. The diameter of a strand of floss is 2.0 ×10^-4 inch.
How much longer is the diameter of the strand of rope than the diameter of the strand of floss?
A. 2.0 ×10^-7 inch
B. 1.0 ×10^-7 inch
C. 2.0 ×10^-3 inch
D. 1.0 ×10^-3 inch
Answer:
D. 1.0 x 10^-3
Step-by-step explanation:
1.2 ×10^-3 = .0012
2.0 ×10^-4 = .0002
.0012
.0002
_______
.0010 = 1.0 x 10^-3
Answer:D
Step-by-step explanation:
Find an equation of a line that is perpendicular to x+2y-12=0 and the same x-intercept of 3x-2y+12=0.
Answer:
y = 2x + 8
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Given
x + 2y - 12 = 0 ( subtract x - 12 from both sides )
2y = - x + 12 ( divide terms by 2 )
y = - [tex]\frac{1}{2}[/tex] x + 6 ← in slope- intercept form
with slope m = - [tex]\frac{1}{2}[/tex]
Given a line with slope m then the slope of a line perpendicular to it is
[tex]m_{perpendicular}[/tex] = - [tex]\frac{1}{m}[/tex] = - [tex]\frac{1}{-\frac{1}{2} }[/tex] = 2
------------------------------------------
To find the x- intercept let y = 0 in the equation and solve for x
3x - 2(0) + 12 = 0
3x + 12 = 0 ( subtract 12 from both sides )
3x = - 12 ( divide both sides by 3 )
x = - 4
Then x- intercept at (- 4, 0 )
Then
y = 2x + c ← is the partial equation
To find c substitute (- 4, 0) into the partial equation
0 = - 8 + c ⇒ c = 0 + 8 = 8
y = 2x + 8 ← equation of perpendicular line
Dadas as coordenadas dos vértices de uma triângulo ABC, em que A=(1; 1), B=(4; 1)
e C=(4; 5), responda as questões a seguir:
a) Qual o valor do perímetro do triângulo ABC?
b) Qual o valor da área do triângulo ABC?
Answer:
kjhgfdsadfg jhgfdsasdfgh mnbvcxz poiuytre
Step-by-step explanation:
Craig was at an auction and bought five different items using the clues below to determine the price he paid for each item the chair was the most expensive item which sold for $95 the range of the prices of the five items was $75 the stereo is the least expensive item Craig bought the TV for $25 the video game player was $20 more than the TV the bed with
Complete question is;
Craig went to an auction and bought five different items. Use the clues below to determine the price he paid for each item.
1. the chair was the most expensive item, which sold for $95.
2. The range of the prices of the five items was $75.
3. The stereo was the least expensive item.
4. Craig bought the TV for $25.
5. The video game player was $20 more than the TV.
6. The bed was $60 more than the stereo.
Answer:
Cost of chair = $95
Cost of stereo = $20
Cost of TV = $25
Cost of video game player = $45
Cost of bed = $80
Step-by-step explanation:
We are told the chair was the most expensive item which was $95.
the range of the prices of the five items was $75. This means;
Highest price - lowest price = $75
Since highest price is $95, then lowest price = 95 - 75 = $20
stereo is the least expensive item. Thus, stereo will cost $20.
TV was bought for $25
video game player was $20 more than the TV. Thus, video game player cost = 25 + 20 = $45
Bed was $60 more than stereo. Thus,
Cost of bed = $20 + $60 = $80
a = 16
C = ?
b = 10
In triangle ABC, BC = a = 16, AC = b = 10, and mZC = 22°. Which equation can you use to find the value of c = AB?
Answer:
c² = a² + b² - 2ab×cos(C)
c = 7.7
Step-by-step explanation:
we use the enhanced Pythagoras for general triangles :
c² = a² + b² - 2ab×cos(C)
c² = 16² + 10² - 2×16×10×cos(22) = 256 + 100 - 320×cos(22) =
= 356 - 320×0.92718... = 356 - 296.698... ≈ 59.3
c ≈ 7.7
as you can see, the "regular" formula of Pythagoras
c² = a² + b²
is derived from the fact that cos(90)=0.
Determine whether 270.5m . 30.5m is equivalent to each of the following expressions
Answer:
The answer is 3m^2
Step-by-step explanation:
Work is shown
25+ POINTS WILL MARK BRAINLIEST
Answer:
Step-by-step explanation:
perimeter of rectangle=a+b+c
=3x+3x+15
=6x+15
if perimeter of rectangle is 90,
perimeter=a+b+c
90=3x+3x+15
90-15=6x
75/6=x
12.5=x
Answer:
X=12.5
Step-by-step explanation:
3x+3x+15
If it equalls 90 then write it as 6x+15=90
Now isolate X.
6x+15=90
6x=75
x=12.5
CHECK UR WORK
(3*12.5)+(3*12.5)+15=90
37.5+37.5+15=90
75+15=90
90=90
Help me please???!!!!!!!
Answer:
im not sure
go on volume calculator
Step-by-step explanation:
The vertices of quadrilateral LMNP are L(-1 , 7), M(4,9), N(8, -1), and P(3,-3). Using the distance or slope formula(s), determine the most precise classification of LMNP: parallelogram, rectangle, rhombus, or square
Answer:
Its a rectangle.
Step-by-step explanation:
After graphing the points, we can quickly figure out it cant be a square.
Then, when we draw the sides, we see it has to be a rectangle, since each side has a perfect 90 degree angle, and the opposite side lengths are parrelel.
Answer:
Step-by-step explanation:
Function p represents the number of people in the library on a Monday as a function of hours since the library opened.
Here is the graph of function p
Answer:
C (3rd choice)
Step-by-step explanation:
Domain (x-values):
We can see that there is a max number of 14 hours and a min. of 0 hours. This means that the domain is [0, 14]. Note that the domain would be in brackets (as opposed to parentheses) because the values are included in the data set. Since time works on a continuum, it can be reasonably concluded that all values should be included (e.g., 1.5 hours exists). Therefore, we would state that all numbers from 0 to 14 are valid in the domain.
Range (y-values):
We can see that there is a max of 85 people and a min. of 0 people. This means that the range is [0, 85]. Again, since the values 0 and 85 are both included in the data, the range is notated in brackets. Be mindful that there is no such thing as half person, so the range must only include whole numbers. That means this chart acts as a step-function.
Need help algebra 1 Picture include
Answer:
A
Step-by-step explanationA :
Which expression makes the equation true for all values of x?
16x – 16 = 4(.? _)
A 4x - 4
B 4x - 16
C 2x - 2
D 12x - 12
Answer:
16x - 16 = 4(4x - 4) Step-by-step explanation:
Find the inverse of f(x)
Answer:
[tex]\huge\boxed{A.\ f^{-1}(x)=\dfrac{x-3}{5}}[/tex]
Step-by-step explanation:
[tex]f(x)=5x+3\to y=5x+3\\\\\text{exchange}\ x\ \text{with}\ y\\\\5y+3=x\\\\\text{solve for}\ y\\\\5y+3=x\qquad|\text{subtract 3 from both sides}\\\\5y+3-3=x-3\\\\5y=x-3\qquad|\text{divide both sides by 5}\\\\\dfrac{5\!\!\!\!\diagup y}{5\!\!\!\!\diagup}=\dfrac{x-3}{5}\\\\y=\dfrac{x-3}{5}\to f^{-1}(x)=\dfrac{x-3}{5}[/tex]
Please help or else you will get killed by Shrek!
Answer:
D as in donKAY
Step-by-step explanation:
Can someone help me understand this?
Answer:
A
Step-by-step explanation:
Corresponding parts of similar triangle have the same proportions
Answer: A) [tex]\frac{AB}{XY} =\frac{AC}{XZ}[/tex]
Step-by-step explanation:
OK so if a figure is a dilation of another figure that means that is has the same angles but the sides are going to be smaller or bigger. Even though the sides are a different size they are proportional. So if I divided the length of AB over XY I'd get 5 since that is the scale factor. If I did that with AC over XZ I'd get 5 again because that is the scale factor. That's because they were proportional. Let's say this wasn't a dilation and AB over XY was 5 but AC over XZ was 4 that would mean it isn't proportional because AB would be 5 times bigger but XZ is only 4 times bigger.
What is true of the type of angle in this lesson? It measures half the sum of the arc it intercepts. It measures twice the sum of the arc it intercepts. It measures half the sum of the arcs it intercepts. It measures twice the sum of the arcs it intercepts.
Answer:
Step-by-step explanation:
Answer: it is C because it is true of the type of angle in this lessonc. It measures half the difference of the arcs it intercepts.
HELP
PLSSSSSSSSSSSSSSSSSSSSSS
OH SO LIKE CHESTER WAS A REALLY BAD PERSON.
A hotel manager records the number of bookings made at various prices during July.
Answer:
C. strong negative correlation
Step-by-step explanation:
A hotel manager records the number of bookings made at various prices during July.
What type of correlation does the graph show?
A. strong positive correlation
B. weak positive correlation
C. strong negative correlation
D. weak negative correlation
Correlation is a statistical measure used to measure the relationship that exists between two variables.
1. Positive correlation : it mean that the two variables move in the same direction. If one variable increases, the other variable also increases.
For example, there should be a positive correlation between quantity supplied and price
When there is a positive correlation, the graph of the variables is upward sloping
2. Negative correlation : it mean that the two variables move in different direction. If one variable increases, the other variable decreases.
For example, there should be a negative correlation between quantity demanded and price
When there is a negative correlation, the graph of the variables is downward sloping
3. Zero correlation : there is no relationship between the variables
D
Y
T
What criteria can be used to prove these two triangles congruent?
HL
SSA
ASA
AAS
Previous
Answer:
AAS
Step-by-step explanation:
Answer:
Angle-side-angle is a rule used to prove whether a given set of triangles are congruent.
The ASA rule states that:
If two angles and the included side of one triangle are equal to two angles and included side of another triangle, then the triangles are congruent.
Angle-Angle-Side (AAS) Rule
Angle-side-angle is a rule used to prove whether a given set of triangles are congruent.
The AAS rule states that:
If two angles and a non-included side of one triangle are equal to two angles and a non-included side of another triangle, then the triangles are congruent.
In the diagrams below, if AC = QP, angle A = angle Q, and angle B = angle R, then triangle ABC is congruent to triangle QRP.
CAN SOMEONE HELP ME WITH THIS PLEASE AND THANK YOU.
Answer:
8 17/18
Step-by-step explanation:
3 5/6 + 5 1/9
23/6 + 46/9
161/18
8 17/18
Jaiver bought a new TV for 479.76. He will make equal payments each month for 2 years . Estimate each payment.
Answer:
$19.99
Step-by-step explanation:
There are 12 months in a year, so in 2 years, there are 24 months.
Find how much each payment will be by dividing the cost by 24:
479.76/24
= 19.99
So, each payment will be $19.99
audio
For the canned food drive, 6 students each collected the same number of cans. They collected 48 cans in all. How many cans did each student collect?
9
State the various transformations applied to the base function f(x) = [x] to obtain a graph of the function g(x) = -[x]+2
A reflection about the x-axis and a vertical shift upward of 2 units.
A reflection about the y-axis and a vertical shift downward of 2 units.
A reflection about the y-axis and a vertical shift upward of 2 units.
A reflection about the x-axis and a vertical shift downward of 2 units.
Answer:the answer is B
Step-by-step explanation:
