Answers
Answer:
x = 8 and y = 10
Step-by-step explanation:
The given equations are :
2x -y = 6 ....(1)
-9x + 3y = -42 ....(2)
Multiply eqation (1) by 3.
6x - 3y = 18 .....(3)
Adding equation (2) and (3).
-9x + 3y + 6x - 3y = -42 +18
-3x = -24
x = 8
Put the value of x in equation (1).
2(8) -y = 6
16 - 6 = y
y = 10
Hence, the values of x and y are 8 and 10 respectively.
Related Questions
3 qp 4P 62 Ling, Mandy and Selvi share a sum of money. The ratio of Ling's share to Mandy's share to Selvi's share is 9:4:6. Mandy receives $72. How much money do the 3 girls receive altogether? L:M:S 4p=872 9:4:6 lp = 72:3 3 = 24 The girls received & 96 altogether. 19 = $72 +$24 =896
Answers
Answer:7+7=0
Step-by-step explanation: bc im smart
If x = 14, which equation is true?
Answers
Answer:
The answer is C because 14 - 3 = 11 x 2 = 22
Answer:
C
Step-by-step explanation:
Knowing x=14, we will substitute 14 when we see x.
In the equation 2(x-3) =22, when we substitute 14 for x we get 2(14-3)=22
Following PEMDAS, we do what's in the parenthesis first. 14 minus 3 gives us 11 and multiplying that by 2 will give us 22.
22=22 is true and therefore, C is your correct option.
Ecuaciones 6x+18=0 respuesta
Answers
Answer:
x=3
Step-by-step explanation:
6x+18=0
Subtract 18
6x=18
Divide by 6
x=3
Hope I helped, have a nice day :)
Find the volume of a rectangular prism with length 7 feet,width 6 feet, and height 4 feet.
Answers
Answer:
V=168ft³
Step-by-step explanation:
V=
w-6
h-4
l-7
V = 168ft³
can someone help me pls
Answers
Answer:
Step-by-step explanation:
Create a proportion using the form %/100 = is/of to represent the following word problem.
14 is what percent of 50?
x/100 = 14/50
14/100 = x/50
14/100 = 50/x
x/100 = 50/14
Answers
Answer:
x/100 = 14/50
Step-by-step explanation:
x is %
14 is x % of 50
A rectangle has height of 3,27 meters and a base measuring 1.29 meters as shown which of the following is closest to x the length of the diagonal of the rectangle
Answers
Answer:
from pythogarus theorem:
[tex]x = \sqrt{ {3.27}^{2} + {1.29}^{2} } \\ x = \sqrt{12.357} \\ x = 3.52 \: meters[/tex]
Please help me. The question is in the image.
Answers
Answer:
10
Step-by-step explanation:
Intersecting Chords Formula:(segment piece) x (segment piece) =
(segment piece) x (segment piece)
10x = 2*50
10x = 100
Divide by 10
10x/10 = 100/10
x = 10
In a group of 20 students there are 12 boys and 8 girls 4 of the boys play on foot ball team what is the probability of choosing 1 student at random from the group who is not on football team
Answers
Answer:
There is a 1 in 5 chance. (1/5)
Justin wanted to walk 3.5 miles a day for a whole year if he meets his goal of walking 3.5 miles a day for the entire year, how total miles will Justin walk in a year?
Answers
Answer:
1277.5
Step-by-step explanation:
365 days in a year. If he walks daily 3.5 miles, then 3.5*365
3.5*365= 1277.5
The diagram shows a circle inside a square.
Work out the area of the circle.
Answers
Answer:
I did the same question in mathswatch, the exact answer is 201.06193
Step-by-step explanation:
16/2 = 8
8π^2 = 201.06193
Round it to whatever the question says to, have a great day <3
Answer:
A = 512π or 1608.49543864
Step-by-step explanation:
A = π(8)^3
16/2=8
What is the point of intersection when the system of equations below is graphed on the coordinate plane?
-x+y=4
6x+y=-3
A. (1, -3)
B. (-1,3)
C. (1,3)
D. (-1, -3)
Answers
Answer:(-1,3)B
Step-by-step explanation:
just graph on desmos
Which is greater, 100^10 or 10^100
Answers
Answer:
Both are the same.
Step-by-step explanation:
If you multiply 100 by itself 10 times you'll get the same thing as when you multiply 10 by itself 100 times.
Statement about the function f(x)=5(0.9)^x
Answers
Answer:
It's an exponential function
Step-by-step explanation:
That's one statement
Hope it helped
Explanation: hope that helps lol
please help me i really need it.
Answers
25 POINTS!!!!!A right triangle has hypotenuse with a length of 13 cm. The length of one leg is 5 cm. What is the area of the triangle?
A. 65
B.60
C.32.5
D.30
Answers
Answer:
The special right triangle that has a hypotenuse of 13 units is the right triangle that has legs of length 5 units and 12 units.
Answer: the answer is 30
Step-by-step explanation:
i jusd did it sorry i'm late and could't help you
Plz helpp need this noww
Answers
Answer:
after 4 hours she cycled 48+ 20 which is 68 miles
Step-by-step explanation:
Answer:
So, d(4)=68. That means that after 4 hours, Joanna has cycled 68 miles.
Step-by-step explanation:
First, we need to find what d(4) equals. In this equation t=4, so to solve plugin 4 and simplify. Therefore, the equation is [tex]d(4)=12(4)+20[/tex]. Once you multiply and add you get d(4)=68; this answers the first question.
Then, the next two questions ask you to interpret this answer. To do that go back and read what each variable stands for. "t" is for the time Joanna has cycled. So, in the equation d(4), 4 hours have passed. Additionally, "d(4)" represents the number of miles she has ridden. This means since d(4)=68 she has cycled 68 miles.
Note that since I cannot see the options I guessed at the exact wording, but the answers should be similar to what I wrote.
Solve for x. Round to the nearest tenth. Please help
Answers
Answer:
answer is 64x68
Step-by-step explanation:
Answer:
Step-by-step explanation:
take 38 degree as reference angle
using sin rule
sin 38=opposite/hypotenuse
0.61=x/13
0.61*13=x
7.93=x
8=x
what is the vertex of a parabola represented by the equation f(x) = -2 (x-4)^2 - 7
Answers
Answer:
f ( x ) = x ^2 + 1
f ( x ) = 7 x^ 2 + 5 x − 4
f ( x ) = 4 ( x − 3 ) ^2
Step-by-step explanation:
NEED HELP ASAP!!!! WILL GIVE BRAINLIEST!!!!
The graph shows two lines, A and B, that Harry graphed.
Part A: How many solutions to the pair of equations for lines A and B does Harry find? Explain how he knows this.
Part B: Write the solution to Harry's equations of line A and B in (x, y) format? Explain to Harry how you know this is the solution for both equations. This is NOT the same as the explanation in Part A.
Answers
Answer:
We see two intersecting lines.
It means there is one solution, it is the intersection point.
Solution is (3, 4)
It was easy to find the solution as both lines and their intersection is visible on the graph.
With two parallel lines we would have no solutions and with overlapping lines we would have infinitely many solutions.
If you only have the equations of the lines you need to compare the slopes, if they are different it means lines are intersecting at one point hence one solution.
With same slopes and different y-intercepts there is no solution.
With same slopes and y-intercepts there is infinitely many solutions.
Balr's new computer costs less than twice the cost of her old computer. Her new computer cost $709. How much did Blair's old computer cost?
Answers
Answer:
$357
Step-by-step explanation:
Calculate angle x on the kite.
10
966
X
24°
O x = 100
O x = 96
X = 120
O x = 24
Answers
Answer:
10
966
X
24°
O x = 100
O x = 96
X = 120
O x = 24
fractions whose values are between 9/20 and 13/25
Answers
Answer:
10/25
Step-by-step explanation:
Answer:
Step-by-step explanation:
[tex]\frac{9}{20} = \frac{9 \times 5}{20 \times 5} = \frac{45}{100}[/tex]
[tex]\frac{13}{25} = \frac{13 \times 4}{25 \times 4} = \frac{52}{100}[/tex]
Fractions whose values are between 9/20 and 13/25 :
[tex]\frac{46}{100}, \ \frac{47}{100}, \frac{48}{100}[/tex], . . .
please help meeeeeeeeeeeee
Answers
Answer:
The pumpkin gained 33 pounds each week.
Step-by-step explanation:
Can someone simplify? I'm confused-
Answers
=9.44x10^-11
Simplify -1| 2/3 -4| divided by 5/6
i don’t have much time i will mark you as brailiest
Answers
Answer:3rd one
Step-by-step explanation:DO THIS CAREFULLY
1. Samuel is out with a kite. When he takes a break he attaches it to the floor. The kite is on a thread that is 16 meters long and makes a 30 degrees angle with the floor. How high above the floor is the kite?
Answers
Answer:
[tex]h=8m[/tex]
Step-by-step explanation:
From the question we are told that:
Slant height [tex]S=16meters[/tex]
Angle [tex]\theta =30[/tex]
Generally the equation for Height h is mathematically given by
[tex]h=Ssin\theta[/tex]
[tex]h=16*sin30[/tex]
[tex]h=8m[/tex]
Which is an x-intercept of the continuous function in the
table?
(0, -6)
(3, 0)
(-6, 0)
(0, 3)
Answers
:) hope this helps
Answer:
The answer is (3,0)
Step-by-step explanation:
pls help me ! i rlly need it !
Answers
Answer:
surface area= 528 volume =480
Step-by-step explanation:
Find the area of the shaded region. Round to the nearest tenth.
Given: the radius of the circle is 5 inches.
Answers
Answer:
a = 21.5 in²
Step-by-step explanation:
Area of square
a = s²
a = 10²
a = 100
--------------------
Area of circle
a = πr²
a = π5²
a =π*25
a = 78.5398163397
-----------------------
Area shaded
a = square - circle
a = 100 - 78.5398163397
a = 21.4601836603
Rounded
a = 21.5 in²