The question is incomplete, the complete question is:
The elimination method is ideal for solving this system of equations. By which number must you multiply the second equation to eliminate the y-variable, and what is the solution for this system?
x + 3y = 42
2x − y = 14
A: Multiply the second equation by -3. The solution is x = 12, y = 9.
B: Multiply the second equation by -2. The solution is x = 12, y = 10.
C: Multiply the second equation by 2. The solution is x = 15, y = 9
D: Multiply the second equation by 3. The solution is x = 12, y = 10
Answer: The correct option is D.
Step-by-step explanation:
The elimination method is a technique wherein we eliminate the coefficient of any one variable.
The given equations are:
x + 3y = 42
2x − y = 14
We multiply the second equation by (3) and the equations formed are:
x + 3y = 42
6x − 3y = 42
The final equation after eliminating the y-term becomes:
7x = 84
x = 12
Putting value of 'x' in any of the original equation, we get:
⇒ 12 + 3y = 42
⇒ 3y = 30
⇒ y = 10
Hence, the correct option is D.
9.2\times 10^{-3}-1.3\times 10^{-3}
9.2×10
−3
−1.3×10
−3
Answer:
73
Step-by-step explanation:
9.2 x 10 - 3 - 1.3 x 10 - 3
92 -3 - 13- 3
73 is the answer if that the question
Answer:
[tex](9.2 \times {10}^{ - 3}) - (1.3 \times {10}^{ - 3} ) \\ \\ = { \tt{(9.2 - 1.3) \times {10}^{ - 3} }} \\ \\ = { \tt{7.9 \times {10}^{ - 3} }}[/tex]
there are 6 pink beads and 44 purple beads on olives necklace. What is the ratio of the number of pink beads to the total number beads.
Answer:
Step-by-step explanation:
3:22
Answer:
6/50
Step-by-step explanation:
using probability
pink beads = 6
total beads = 44 + 6
= 50
6/50
3/25
therefore ratio
3 : 25
On the first day of camp,
5/8 of the skaters were beginners. Of the beginners, 2/6 were girls. What fraction of the skaters were girls and beginners? Complete the explanation.
Answer:
5/24.
Step-by-step explanation:
2/6 of 5/8 were beginners and girls
= 1/3 * 5/8
= 5/24.
Haley is camping and needs to go from the campground to the waterfall. She hikes 3 miles north and 7 miles east. What is the shortest distance from the campground to the waterfall?
Answer:
7.61 miles
Step-by-step explanation:
Given that,
Haley hikes 3 miles north and 7 miles east.
We need to find the shortest distance from the campground to the waterfall. Let the distance is D.
It can be calculated as follows :
[tex]D=\sqrt{3^2+7^2}\\D=7.61\ miles[/tex]
So, the shortest distance from the campground to the waterfall is 7.61 miles.
How do you find co terminal angle of -445
Answer:
275°
Step-by-step explanation:
-445+360=-85+360=275°
witch one is greater 428,745 or 428,745
They are the same amount. neither is greater or lesser than the other.
Which of the following best describes the graph of the polynomial function
below?
A. The graph has two zeros.
Ο Ο Ο
B. The graph has infinitely many zeros.
C. The graph has one zero.
D. The graph has no zeros.
SUBMIT
Answer:
C.
Step-by-step explanation:
the given graph touches the Y-axis in the point (5;0), it means the only zero.
To the additional: the graph is y=(x-5)².
pls help i really need this grade
Can someone please help for this question?
What are the dimensions of the rectangle shown on the coordinate plane?
The base is 5 units and the height is 4 units.
Hope this helps! :)
Explica qué significan las variables "m" y "b" en la ecuación y = mx +b*
Answer:
La M representa la pendiente de la recta y la b representa la intersección con el eje y
Step-by-step explanation:
Que tengas un excelente verano :)
Respuesta: En la ecuación y= mx + b, “m” representa la pendiente y “b” representa el y-intercept.
Espero que esto ayude, buena suerte! :D
Find the missing lengths of the sides.
Answer: x = 8, y = 8
Step-by-step explanation: If 8 is already on the exterior of the triangle then this means that every angle should also be 8. But, if this were an equilateral triangle, a triangle with equal sides, then ALL sides would HAVE to be 8. But since I don't have this information (if it's equilateral or not), then I can't be positive about this. Really hope this helps you!
I need help to find the value please
Answer:
13.928
Step-by-step explanation:
Pythagorean theorem. 13^2 + 5^2 = x^2
Answer:
this is easy
Step-by-step explanation:
valve of x is 30 add 13 into 30 = 43÷5 5/8
Solve
4(-5)(-2)(-3)
show your work<3
no links
Answer:
-120Step-by-step explanation:
4(-5)(-2)(-3)
= -20 × 6
= -120 (Ans)
Answer:
-120
Step-by-step explanation:
lots of approaches here
suggest saying that there are 3 (odd) number of negative signs
so the answer is negative (-)
5*4 = 20
20*2 = 40
40*3 = 120
we determined that the answer has to be negative
-120
What is the solution set of the equation x2 + 2x – 15 = 0?
Answer:
( x − 3 ) ( x + 5 )
Step-by-step explanation:
HAVE A NICE DAY
Answer:
B
Step-by-step explanation:
; factor the left side of the equation
; (x−3) (x+5) = 0
set factors equal to 0
x − 3 = 0
or
x + 5 = 0
; so, x = 3 or x = −5
What are all numbers that equal to 30 in multiplication
Answer:
2 X 15 =30
3 X 10 = 30
5 X 6 = 30
6 X 4 = 30
10 X 3 = 30
Step-by-step explanation:
What are the domain and range of the function represented by the table?
Answer:
Doman is always the x-intercept.
And Range is always the y-intercept.
Domain = {-5, 0, 5, 10, 15}
Range = {-1, 0, 1, 2, 3}
So the answer is C.
In a right triangle, the ratio of the length of the side opposite acute angle to the length of the side adjacent to angle is called the tangent of angle .
Answer:
The given statement is "True"
Step-by-step explanation:
The right angle triangle is shown below:
The tangent value of an angle is given by the expression as shown below:
[tex]tan\alpha =\frac{a}{b}[/tex]
Is it a function yes or no. 1,2,3,4,5,6.
Find all real zeros of the function.
h(x) =-5x(x-2)(x^2-25)
If there is more than one answer, separate them with commas.
Answer:
6
Step-by-step explanation:
describe fully the single transformation that maps A onto c
Answer:
They are different because they are not similar and they have different answer at the end
The blueprint of a deck has a scale of 2 centimeters equals 9 feet. The scale drawing is shown below.
8 cm
10 cm
6 cm
Part A
What are the actual lengths of the sides of the deck?
6 cm
8 cm =
10 cm =
Part B
Decking costs $1.75 per square foot. How much will it cost to build the deck?
Answer:
27
36 ft
45 ft
$189
Step-by-step explanation:
A scale drawing is a reduced form in terms of dimensions of an original image / building / object
the scale drawing is usually reduced at a constant dimension
scale of the drawing = original dimensions / dimensions of the scale drawing
original dimension = (8 x 9) / 2 = 36
(10 x 9) / 2 = 45
(6 x 9) / 2 = 27
cost of deck = sum of sides x cost per square feet
sum of sides = 36 + 27 + 45 = 108
108 x 1.75 = 189
what is the domain of the given function?
{(3,-2), (6, 1), (-1, 4), (5, 9), (-4, 0)}
Answer:
The domain is {3,6,−1,5,−4}
Step-by-step explanation:
Answer:
3,6,-1,5,-4.
Step-by-step explanation:
The domain is the x-value or the first number in the ordered pair. For example: (5,2). The x-value is 5 so that means that the domain is 5. Therefore, for this function, the domain will be 3,6,-1,5,-4.
If this helps please mark as brainliest
Find the volume of the sphere.
Either enter an exact answer in terms of π or use 3.14 for π and round your final answer to the nearest hundredth.
Answer:
Volume of a sphere = 4πr³/3
r=10
V = 4πx10³/3
=4000π/3
V= 1333.33π (in terms of pi)
or
V= 4188.79(Nearest Hundredth).
Multiply (5x + 3) by (2x + 6) using the box method.
Answer:
10x² + 36x + 18
Step-by-step explanation:
(5x + 3) (2x + 6)
10x² + 30x + 6x + 18
10x² + 36x + 18
find the measure of the missing angles.
Step-by-step explanation:
a is the answer to this question
Answer:
d=90 e=27 f=153
Step-by-step explanation:
The angle adjacent to d is 90 degrees. They both add up to 90. 180-90=190. D=90.
E is a vertical angle, congruent to 27.
E=27.
F is a linear pair with 27, which means it's supplementary (adds to 180). 180-27=153.
F=153.
the volume of this triangular prism is ….. cubic inches. please someone help, will give brainliest asap just explain how❤️❤️❤️❤️❤️
Answer:
I think the answer is 278.85
Step-by-step explanation:
Answer:
278.85
Step-by-step explanation:
I need to find the area
Answer:
781
Step-by-step explanation:
you need to separe the two shapes, find the area of both, then add
Answer:
Hello! answer: 781
Step-by-step explanation:
There's multiply ways to solve this but What im going to do is find the area of the whole thing as if it didnt have a huge chuck cut out of it then i will find the area of that separately and subtract so...
41 × 29 = 1189
29 - 12 = 17
17 × 24 = 408
1189 - 408 = 781 therefore the area is 781 Hope that helps!
Find the probability of having 2,3, or 4 successes in five trials of a binomial experiment in which the probability of success is 40%. Round to the nearest tenth of a percent. [ ? ]%
Answer:
65.3%
Step-by-step explanation:
Binomial distribution PMF below (along with a description)
the probabilty of getting 2, 3, or 4 successes in 5 trials is just
p(2)+p(3)+p(4)
p(2)= 5C2*.4²*(1-.4)³ = .3456
p(3)= 5C3*.4³*(1-.4)²= .2304
p(4)= 5C4*.4⁴*(1-.4)=.0768
.3456+.2304+.0768= .6528
PLEASE HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
Answer:
17m-7
Step-by-step explanation:
product means multiplication so we multiply 17 times m.
17m
and 7 less than 17m is subtraction
17m-7
Answer:
17m-7
Step-by-step explanation:
m = The height
7 less than the product ( Multiply) 17 and m.
so 17m-7