Answer:
(p, q ) = (1, - 3 )
Step-by-step explanation:
2p + 3q = - 7 → (1)
3p + 5q = - 12 → (2)
Multiplying (1) by 3 and (2) by - 2 and adding the result will eliminate p
6p + 9q = - 21 → (3)
- 6p - 10q = 24 → (4)
Add (3) and (4) term by term to eliminate p
0 - q = 3
-q = 3 ( multiply both sides by - 1 )
q = - 3
Substitute q = - 3 into either of the 2 equations and solve for p
Substituting into (1)
2p + 3(- 3) = - 7
2p - 9 = - 7 ( add 9 to both sides )
2p = 2 ( divide both sides by 2 )
p = 1
7x + 2y = -7
11x + 5y = 2
Answer:
x=−3 and y=7
Step-by-step explanation Solve: 7x+2y=−7for x:
7x+2y=−7
7x+2y+−2y=−7+−2y(Add -2y to both sides)
7x=−2y−7
7x
7
=
−2y−7
7
(Divide both sides by 7)
x=
−2
7
y−1
------------
−2
7
y−1forxin11x+5y=2:
11x+5y=2
11(
−2
7
y−1)+5y=2
13
7
y−11=2(Simplify both sides of the equation)
13
7
y−11+11=2+11(Add 11 to both sides)
13
7
y=13
13
7
y
13
7
=
13
13
7
(Divide both sides by 13/7)
y=7
------------------------
Substitute7foryinx=
−2
7
y−1:
x=
−2
7
y−1
x=
−2
7
(7)−1
x=−3(Simplify both sides of the equation)
he saves £85 each month for the trip.
he will save for 4 month s.
how much will he save in total?
show your working?
Helppppppppp pleaseeee
Step-by-step explanation:
the first one is:
2 so not th second one
Answer:
Step-by-step explanation: We can solve this in two ways: Solve the equations directly, or graph the lines and find the point they intersect (which will be the only point at which they are equal.
Solve The Equations:
y = 2x+9
y = -x-3
Set them equal to each other (to find x such that both equations will return the same value for y).
-x-3 = 2x + 9
-3x = 12
x = -4
Use x=-4 in either equation to find y:
y = -x-3
y = -(-4)-3
y = 1
===
The point is (-4,1). That is the point that satisfies both equations:
1) y = 2x+9
y = 2(-4)+9
y = 1, and
2) y = -x-3
y = -(-4)-3
y = 1
=====
We can also solve by graphing and finding the point at which the two lines intersect. A graph is attached.
832.078107648 to the nearest whole number.
what should be the factors of denominator so that a rational number
a) 2or5
b) only 2
c) only 5
d) 2 and 5
Answer:
Step-by-step explanation:
D
Step-by-step explanation:
according to me option A 2 or 5
15 POINTS, to lazy please help.
Answer:
(2, - 1 )
Step-by-step explanation:
The solution to the system is at the point of intersection of the 2 lines.
They intersect at (2, - 1 ) ← solution
Answer:
1427832.087y4441x6.7
List numbers that are between -21 and -12
Answer:
-13 -14 -15 -16 -17 -18 -19 -20
Answer:
-20, -19, -18, -17, -16, -15, -14, -13,
Step-by-step explanation:
Find an equation in standard form of the parabola passing through the points.
(2, −8), (3, −8), (6, 4)
Evaluate 7P4 and 10C6 .
OMG
_________
2² × 3² = ....
Answer:
24
Step-by-step explanation:
First Step:
2² × 3² =
Second Step:
4 × 3² =
Third Step:
4 × 6 = 24
2 × 2 = 4
3 × 3 = 9
4 × 9 = 36
hence , your ans is 36
Please help and please no links or just answering for points ¯\_(ツ)_/¯
Answer:
8c + 6 = 3
Step-by-step explanation:
six more than the product of a number and 8 is 3
the product of 8 and c is 8•c, which can also be written as 8c. 6 more than that means you are adding 6, and getting 3... so your equation is,
8c + 6 = 3
hope this helped!
mark me brainliest :D
i need help it is due today
Answer:
8
Step-by-step explanation:
Using the Heron's formula we can find that the total area of the triangle is 84 inches.
Then, to find the height of the triangle, you have to multiply the area by 2 since the formula for the area of a triangle is (h*b)/2
Now, when we multiply 84 and 2 we get 168, so you have to divide 168 by 21 to find 8.
You take a road trip up north with your family. You begin a hike in Death Valley, California at an elevation of 86 meters. You hike up another 35 meters, then down another 148 meters to the other side of the hill. What elevation are you at when you reach the other side of the hill?
Answer: - 27 meters
Step-by-step explanation:
1. 86 m Start at 86 meters
2. +35 m Go up another 35 meters
3. -148 m Go down 148 meters.
4. - 27 meters Net change in elevation
The net result is a negative 27 meters in elevation from the start of the hike.
The sides of a rectangle are in the ratio of 5:6. If its longer side is 7.2 in., find the shorter side, the perimeter, and the area of this rectangle.
Answer:
The shorter side is 6.
The perimeter is 26.4 inches.
The area is 43.2 inches[tex]^{2}[/tex]
Step-by-step explanation:
The ratio 5;6 and the given longer side is 7.2 in.
Since it is the longer side, the '6' in the ratio is 7.2 in.
Let x be the shorter side
5:6 = x : 7,2
Divide 7.2 to 6.
7.2 ÷ 6 = 1.2
Then multiply 1.2 to 5.
1.2 * 5 = 6
So the shorter side is 6.
L = 7.2
W = 6
Now to find the perimeter, let's use the formula
P = 2L + 2W
Let's put the values in the formula
P = 2(7.2) + 2(6)
P = 14. 4 + 12
P = 26.4
The perimeter is 26.4 inches
To find the area, let's use the formula
A = LW
A = (7.2)(6)
A = 43. 2 inches[tex]^{2}[/tex]
Answer:
shorter side= 6
p= 26.4
a= 43.2
Step-by-step explanation:
Determine the range of the following graph:
Answer:
5,_5,5,
_8,_3,5,
Step-by-step explanation:
from 5 u get _8,from _5 you get _3 and so on
Please help...........
Answer:
4
Step-by-step explanation:
your answer is 4 because
2*4 = 8
5*4 = 20
7*4 = 28
8*4 = 33
a kayak rental shop rents 28 kayaks per week when it charges $25 per day. For each $5 increase in price, the shop loses four kayak rentals per week. How much should the kayak rental shop charge to maximize weekly revenue? What is the maximum weekly revenue?
If a kayak rental shop rents 28 kayaks per week when it charges $25 per day. For each $5 increase in price, the shop loses four kayak rentals per week. 720 is the maximum weekly revenue
What is Equation?Two or more expressions with an Equal sign is called as Equation.
It is given that a kayak rental shop rents 28 kayaks per week when it charges $25 per day
For each $5 increase in price, the shop loses four kayak rentals per week. we need to find How much should the kayak rental shop charge to maximize weekly revenue
R(x)=(25+5x)(28-4x)
=5(5+x)4(7-x)
=20(5+x)(7-x)
=-20(5+x)(x-7)
when x=1 it is maximum
Price when x =1 is 25+5(1)=30
To calculate maximize revenue
R(1)=(25+5)(28-4)
=30(24)
=720
Hence the maximum weekly revenue is $720.
To learn more on Equation:
https://brainly.com/question/10413253
#SPJ5
15 POINTS AND BRAINLIEST, im to lazy and this was do two weeks ago please help.
Answer:
$1.79
Step-by-step explanation:
h + 5f = 8.74 → (1)
2h + 3f = 7.75 → (2)
Multiplying (1) by 3 and (2) by - 5 and adding will eliminate f
3h + 15f = 26.22 → (3)
- 10h - 15f = - 38.75 → (4)
Add (3) and (4) term by term to eliminate f
- 7h = - 12.53 ( divide both sides by - 7 )
h = 1.79
The hamburger cost $1.79
I need help with this please! It’s due tonight and I don’t know.
Answer:
b
Step-by-step explanation:
Find the value of x
Answer:
11
Step-by-step explanation:
2x - 6 = 16 (Based on similarity)
2x = 16 + 6
2x = 22
x = 22/2
x = 11
The cost of 4 books is $18.00 and the cost of 4 pens is $20.00. Find the cost of six similar
books and six similar pens.
uhmmm helppppppp pls lol
Answer:
h=81
Step-by-step explanation:
Dont know how to explain but this is the answer
If
x
=
4
and
y
=
7
, evaluate the following expression:
20
−
(
3
y
−
4
x
)
Answer:
15
Step-by-step explanation:
given solution
x=4 20-(3y-4x) substitute
y=7 20-(3(7)-4(4))
20-(21-16)
20-5
answer =15
Which coordinate pair is outside the circle and inside the rectangle as shown below? 10 9 8 o in N 6 5 2 0 1 2 3 4 5 6 7 8 9 10 O (5,3) O (6,3) O (6,6) O (5,5)
(2x+5) (3x-15)
solve for x
•x=27
•x=20
•x=38
Answer:4799,2475,4941,
Step-by-step
I'm not sure,
but I solved replace the given numbes
For first, (2×27+5)(3×27-15)=4799, for second (2×20+5)(3×20-15)=2475
For third(2×38+5)(3×38-15)=4941
Solve for Y please help me
Answer:
y = j - rx/c
Step-by-step explanation:
In one day you earn $75
for 8 hours of work. If
you work 37.5 hours for
the week, what will your
weekly pay be?
Answer:
2812.5
Step-by-step explanation:
Jodie wants to raise money for a school trip by selling raffle tickets at a basketball game. She sells each ticket for 50 cents, and she sells two and a half rolls of tickets. If each roll of ticket has 200 tickets, how much money did Jodie make?
Answer:
250 dollars
Step-by-step explanation:
t = tickets
t = 200
Two and a half rolls tickets = (200 x 2) + 200/2) = 400 + 100 = 500
500 tickets x 50 cents = 25000 cents
convert cents to dollars (move decimole point over left 2 units)
25000 = 250 dollars
[tex]8x + 15 \leq 60\\ solve for x then graph the inequality[/tex]
Answer:
x ≤ 5 5/8
Step-by-step explanation:
8x +15 ≤ 60 . . . . . . given
8x ≤ 45 . . . . . . . . . subtract 15
x ≤ 5 5/8 . . . . . . . . divide by 8
The graph is a solid dot at x = 5 5/8, with shading extending to the left.
Q(x)=-1/2x-3; q(x)=-4
Help
Answer:4
Step-by-step explanation: