Answer:
one solution
Step-by-step explanation:
The number of solutions 2x+3y=4, x-y=3, 3x+5y=6 is
Solving two of the equations simultaneously
2x+3y=4, ... 1 *1
x-y=3 ... 2 * 2
_________
2x+3y = 4
2x-2y = 6
subtract
3y+2y = 4+6
5y = 10
y = 10/5
y = 2
Recall that x - y = 3
x - 2 = 3
x = 3+2
x = 5
Hence the solution has just one solution
Two groups are going on a trip to a theater. The first group has 30 students and 4 adult chaperones. The second group
has 25 students and 4 adult chaperones.
The cost, in dollars, for each student ticket, s, and each adult ticket, a, can be determined using the system of equations
below.
30s + 4a = 720
25s + 4a = 620
What is the cost for each student ticket?
Answer:
Step-by-step explanation:
can someone give me a hand
Answer:
Where's the table
Step-by-step explanation:
Which point is a reflection of (-3,-3) across the y-axis?
(-3, 3)
(3, 3)
0 (-3,-3)
o
(3,-3)
The point which is a reflection of (-3,-3) across the y-axis is, (3, - 3)
What is Coordinates?A pair of numbers which describe the exact position of a point on a cartesian plane by using the horizontal and vertical lines is called the coordinates.
We have to given that;
The point is,
⇒ (- 3, - 3)
Now, We know that;
The rule of reflection after across the y - axis is,
⇒ (x, y) = (- x, y)
Thus, The point which is a reflection of (-3,-3) across the y-axis is,
⇒ (x, y) = (- x, y)
⇒ (-3, -3) = (- (-3), -3)
= (3, - 3)
Learn more about the coordinate visit:
https://brainly.com/question/24394007
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Each tile is 3/2 feet by 3/2 feet. There are 10 tiles on the bathroom floor.
What is the area covered by the tiles?
Explain how you know.
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Answer:
22.5 square feet
Step-by-step explanation:
The area covered by one tile is the product of its dimensions:
A = lw
A = (3/2 ft)(3/2 ft) = 9/4 ft²
The area covered by 10 tiles is 10 times the area covered by one tile. The area covered is ...
covered by tiles = 10 × 9/4 ft² = 90/4 ft²
covered by tiles = 22.5 ft²
22 1/2 square feet is the area covered by tiles.
on their first day, researchers explore a part of the ocean floor that is 60 feet below sea level. This depth can be represented by the integer -60. On their secon dive, researchers explore a deeper depth.
Write an inequality that represents the possible depth, d, of the researchers' second dive.
Answer:
d < - 60
Step-by-step explanation:
Given that:
Depth, d of ocean floor on first dive = 60 feets below sea level = - 60
Depth, d explored on second dive is deeper than that of fist dive
Hence, possible depth, d, explored on second dive can be represented by the inequality ;
d < - 60
Measurement of angles
Answer:
Measuring an angle using a protractor in anticlockwise direction:
This is measurement in anticlockwise direction. Thus, we will use the inner scale to measure the angle.
The centre of the protractor is placed on the vertex B of the angle ABC. The base line of the protractor should coincide...
Read the markings where the arm BC overlaps the markings on the protractor.
Step-by-step explanation: Hope this helps :)
When 2/3 tons of coal cost $13.50, what will in ton cost?
Answer:
20.25
Step-by-step explanation:
Divide 13.50 by 2 and then multiply by 3.
The radius of a circle is 7 centimeters. What is the circle’s circumference?
Use 3.14 for pi
Answer:
43.96
Step-by-step explanation:
Circumference formula: 2 x r x pi
2 x 7 x 3.14= 43.96
Solve the equation d- 1/4 = 3
Answer:
d = 13/4
Step-by-step explanation:
Answer:
d= 13/4 or 3.25
plz give brainliest
Step-by-step explanation:
Simplify -1-5/2-12
Divide: -27/10 divide 18/75
let x represent one number and let y represent the other number. use the given conditions to write a system of equations. solve the system and find the numbers. three times a first number decreased by a second number is 22. the first number increased by twice the second number is 12.
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Answer:
(x, y) = (8, 2)
Step-by-step explanation:
The relevant equations are ...
3x -y = 22
x +2y = 12
__
We can eliminate y by adding twice the first equation to the second.
2(3x -y) +(x +2y) = 2(22) +(12)
7x = 56
x = 8
Substituting into the first equation gives ...
3(8) -y = 22
y = 24 -22 = 2
The first number is 8; the second number is 2.
PLEASE HELP AND VERY FAST
Answer:
B
Step-by-step explanation:
I am so sorry if that is incorrect
x-1/x^2 - x - 20 Give the equivalent numerator if the denominator is (X - 5)(x + 4)(x + 3)
x^2 + 2x + 3
x^2 + 2x - 3
x^2-3
Answer:
[tex]x^2+2x-3[/tex]
Step-by-step explanation:
Note that [tex]x^2-x-20=(x-5)(x+4)[/tex], so, if the denominator is [tex](x-5)(x+4)(x+3)[/tex], we need to multiply the numerator by [tex](x+3)[/tex]. And [tex](x-1)(x+3)=x^2+2x-3[/tex].
Evaluate 7y - 2
when y = 9
Answer:
The answer is 61.
Step-by-step explanation:
7(9)-2
63-2
61
Answer:61
7*(9)-2
63-2
61
Hope it's useful
9x-(3x-3)=21
Solve the equation. Select the correct choice below and if necessary, fill in the answer box to complete your choice. The solution set is (Simplify your answer. Type an integer or a fraction. Use a comma to separate answers as needed.) The solution is all real numbers. The solution is the empty set.
(a) has no solutions.
(b) has infinitely many solutions.
(c) has exactly one solution.
Answer and Step-by-step explanation:
Given
ax + by = c
qx + ry = s
(a) the equation has no solutions if a/q = b/r ≠ c/s, when this happens, we say the system of equations has no solution. For example
x + y = 3
x + y = 5
Subtracting first equation from the second we have:
0 = 2 which is impossible.
(b) the equations have infinite solutions if a/q = b/r = c/s, for example
x + y = 2
x + y = 2
Subtracting the first equation from the second we have
0 = 0, since this is always true, then it has infinite solutions.
(c) the equations have unique solutions if a/q ≠ b/r, for example
x + y = 2
x – y = 1
Adding the first and second equation we have
2x = 3, we can get x from here and definitely y, so we have just one solution.
How do you solve the following word problem
A small radio transmitter broadcasts in a 49 mile radius. If you drive along a straight line from a city 67 miles north of the transmitter to a second city 63 miles east of the transmitter, during how much of the drive will you pick up a signal from the transmitter?
I must give the answer in miles and am unclear as to what equations to use and need details on what equations to use to get to the correct answer.
thanks for any help.
M
Answer:
Step-by-step explanation:
Let the transmitter be located at (0,0)
The equation for its effective coverage area will be a circle centered at (0,0) with a radius of 49.
So....the equation is
[tex]x^2 + y^2 = 49^2[/tex]
[tex]x^2 + y^2 = 2401[/tex]
Let the point 67 miles north of the transmitter be (0, 67)
Let the point 63 miles east of the transmitter be (63, 0)
The line connecting these (the line of travel) will have a slope of
[67 - 0] / [ 0 - 63] = -67/63
The equation of this line will be: y = (-67/63)x + 67
The signal will be received between the points:
(21.681, 43.942) and (45.192, 18.938)
The distance between these points is
[tex]\sqrt{[ ( 45.192 - 21.681)^2 + ( 43.942 - 18.938)^2 ] } = 34.322 miles[/tex] (1)
The distance between (0, 63) and (67, 0)
[tex]\sqrt{[ ( 63)^2 + ( 67)^2 ] }=91.97miles[/tex] (2)
So....you will receive the signal using (1)/ (2)
(34.322 / 91.97) x 100 ≈ 37% of the drive
words every 20 minutes, whilo Becky's rate is represented by the graph below. Who types at a faster rate , Armav or Becky? PLEASE HELP I WILL MARK YoU BRAINALIST!!!!
Answer:
The anwser is 1340
Step-by-step explanation:
divide 335 by 5 then multipilyby 20
I need help I’m not sure if this the right answer.!
Answer:
is A
Step-by-step explanation:
00000000000000000000000000
Answer:
Its 0 because 12+ (-12) = 0
A CD costs $13.50 before tax. What is the total cost after a 8% sales tax is added?
Answer:
$14.58
13.50+1.08= $14.58
The table shows a function. Is the function linear or nonlinear?
x y
7 20
8 12
9 7
Answer:
Non-linear because none of them repeat.
Step-by-step explanation:
Given AB congruent to EB and BD congruent to BC why is angle ABC congruent to EBD
Answer:
SAS
Step-by-step explanation:
Side angle side Test
2 sides are given equal and angle between these two side is equal in both triangle
hence by SAS test
Triangle ABC and EBD are congruent
what type of number is -
[tex] \sqrt{16} [/tex]
Answer:
perfect square / rational
4
Step-by-step explanation:
Answer:
root of 16. or 4
Step-by-step explanation:
what is the coefficient of x in the equation?
y=x+4
Answer:
1
Step-by-step explanation:
When a variable does not have a visible coeffecient then the coefficient is 1. (Double check to make sure I'm correct)
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPP PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEE BRAINLIEST TO RIGHT ANSWER FIND X
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Answer:
x = 19
Step-by-step explanation:
Corresponding sides are proportional.
full length/right segment = 36/20 = (x+5+30)/30
Multiplying by 30 gives ...
54 = x +35
19 = x . . . . . . . subtract 35
.................................................
Answer:
(7,-4)
Step-by-step explanation:
3+2=5. 5+2=7
6-5=1 1-5=-4
(7,-4)
Factor each expression:
27+12
12+36
16+20
2x+8
30+12x
42x+49
guys I really need help plsss
Answer:
x = 3
Step-by-step explanation:
Multiply the first equation by -1, then add it to second equation.
2x+9y = -12
-2x-7y = 8
-------------------
2y = -4
Solve for y
2y = -4
y = -2
Plug value of y into one of the equations and solve for x
2x + 9(-2) = -12
2x = 6
x = 3
11-
10
9
OP
7
6
Weight (kilograms)
01
NO
X
1
2
3
8
9
10
4 5 6 7
Age (months)
The scatter plot shows the weight of a child each month.
per month.
kilograms. The child gains an average of
The birth weight of the child is
Reset
Next
Answer:
13 kg
Step-by-step explanation:
I'm 14 years old so my weight was 50 kg
ASAP I WILL GIVE BRAINLIEST
Which statements apply to the expression 5 ?
The answers/options r in the pic
Answer:
ok so in my math class I just learned this so sry if I am wrong but so
Answer:
Options 1, 3, 4, 7
Step-by-step explanation:
I'm guessing you meant the expression 3/5^3.
The base would be 3/5 because that is the number that the exponent is raising.
The exponent is 3 because that's the small number above and to the right of 3/5.
The expanded form is 3/5 × 3/5 × 3/5 because there's an exponent of 3. An exponent means you multiply the number by itself, the number of times it's being raised to. The exponent is 3 and 3/5 is being multiplied 3 times.
The solution would be 27/125 because when you multiply fractions, you just multiply straight across. 3 × 3 × 3 is 27 and 5 × 5 × 5 is 125.
I hope this makes sense, it's kinda hard to make it understandable without being able to actually talk to you.
