Answer:
x = 1, x = 19
Step-by-step explanation:
Given
2x² - 20x = x² - 19 ( subtract x² - 19 from both sides )
x² - 20x + 19 = 0 ← in standard form
(x - 1)(x - 19) = 0 ← in factored form
Equate each factor to zero and solve for x
x - 1 = 0 ⇒ x = 1
x - 19 = 0 ⇒ x = 19
A scout troop is planting trees at the state park. The troop planted 7 trees in 3 hours. At that rate, how many trees will they be able to plant in three 8-hour days?
Answer:
I believe 57
Step-by-step explanation:
7 trees per 3 hours
6 hours = 14 trees
plus the 2 hours which I'm assuming 5 to 4 trees
so you multiply 19 trees per day
19 x 3 = 57 if I'm wrong please correct me :)
Solving systems of equations using substitution with both equations in y=mx+b
PLZ HELP ME PLZZZ
I need help pls help.
Answer:
it's 2 meters
.........................
Robert has scored an 88, 92, 83, 79, and 87 on his last five rounds of golf. What must he shoot on this sixth round to have a mean of 85?
Answer:
Step-by-step explanation:
Robert has scored:
88+92+83+79+87+x=(85*6)
429+x=510
x=510-429=81
he needs to score an 81
This ellipse is centered at the origin. Find it’s equation. Verticles: (0,-6) (0,6) Foci: (0,-2) (0,2)
The equation of the ellipse will be x² / 36 – y² / 32 = 1.
What is an ellipse?An ellipse is a locus of a point that moves in a plane such that the sum of its distances from the two points called foci adds up to a constant. It is taken from the cone by cutting it at an angle.
This ellipse is centered at the origin.
Vertices: (0,-6) (0,6)
Foci: (0,-2) (0,2)
Then the equation of the ellipse will be given as
x² / a² – y² / b² = 1
Let c be the distance between the origin to foci.
Then we have
c = 2
And the value of a will be
a = 6
Then the value of a² will be
a² = 6² = 36
The value of b is the distance from center to one of the Co-vertices. Then the value of b² will be
a² – b² = c²
36 – b² = 2²
b² = 36 – 4
b² = 32
Then the equation of the ellipse will be x² / 36 – y² / 32 = 1.
More about the ellipse link is given below.
https://brainly.com/question/19507943
#SPJ1
if you can do 45 sit-ups in 3 minutes, how many sit-ups can you do in 8 minutes?
Answer:
You can do 120 situps
Step-by-step explanation:
45/3=15
15x8=120
120 situps
Answer:
120 Situps
Step-by-step explanation:
45/3 = 15
So, you can do 15 situps a minute. Multiply 15x8 and get 120.
Please Help but don't give me a random answer just cus u want points ill report u. 15 points. cus am low on points
evaluate 1/2 + 1/3 simplify if possible
Answer:0.8
Step-by-step explanation:
Answer
1/2 : 1/3 = 3/
2
= 1 1/
2
= 1.5
Step-by-step explanation:
1.5 is your answer
Here is a shape ABCD.
Calculate the perimeter of the shape.
Give your answer correct to 3
significant figures.
B
С
D
9 cm
O
9 cm
140°
21 cm
24°
А
The shape is made from a triangle and a
sector of a circle, centre O and radius 9 cm.
AD = 21 cm
Angle AOD = 140°
Angle OAD = 24°
Total marks: 5
9514 1404 393
Answer:
59.8 cm
Step-by-step explanation:
The length of arc ABC is ...
s = rθ
s = (9 cm)(220/180π) = 11π cm ≈ 34.558 cm
The length of segment CD is 9 cm less than the length of segment OD. OD can be found using the law of sines.
OD/sin(A) = AD/sin(O)
OD = AD·sin(A)/sin(O) = (21 cm)sin(24°)/sin(140°) ≈ 13.288 cm
Then the length of CD is ...
CD = OD -9 cm = (13.288 cm) -(9 cm) = 4.288 cm
The perimeter is the sum of the segment and arc lengths:
P = ABC + CD +AD
P = 34.558 cm + 4.288 cm + 21 cm = 59.846 cm
The perimeter of the shape is about 59.8 cm.
answer asap only if you know
solve by elimination
3x + 2y = 21 x - 4y = -7
show work plz and thx
what the recursive formula for 1, 3, 5, 7, 9 11, 13,
Answer:
15
Step-by-step explanation:
1, 3. 5, 7. 9, 11. 13, 15.
Please answer quick!!!
Use polynomial long division to divide the following expressions
(x5 – 2x4 + x3-5x2 + 12x - 20)/(x2 - 3x + 1)
C/8 = - 12
please help fast
Answer:
x = -96
Step-by-step explanation:
the school nurse is packing first aid kits. the ratio of bandages to gloves is 9:2. if she has 48 gloves, how many bandages will she need to make it complete kits
A. 216
B. 11
C. 3
D.96
Answer:
A
Step-by-step explanation:
48*9 =432
432/2=216
HELP PLEASE
I need this in 30 minutes please help
Answer:
y = x + 1
Step-by-step explanation:
I HOPE IM NOT TOO LATE BUT basically first u use the points to find the slope:
[tex]\frac{3+1}{2+2} = \frac{4}{4} = 1[/tex]
so far then, u have y = x + b (there's an invisible 1 in front of the x)
next, substitute in the values from one set of coordinates to solve for b. I picked the second one bc positive numbers are easier:
y = x + b
3 = 2 + b
3 - 2 = b
1 = b
put this into your equation, and u get y = x + 1
hope this helps!
the ratio 20 minuets to 1 hour can be written in the form 1:n
find the value of n
the answer is 1:3 since there are 60 minutes in on hour you divide 60 by 20 and get 3 so you have 3 sets of twenty minutes to one hour. so n is 3
helpppppppppppppppppppppppppppppppppppp meeeeeeeeeeeeeeeeeeeeeeeeee pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
6.1 x -1 = ?
please help meeeeeeeee
Answer:
-6.1
Step-by-step explanation:
Hope this helps!
A. The objects had the same mass.
B. Object 1 had a higher mass than Object 2.
C. Object 2 had a higher mass than Object 1.
D. Mass would not matter for the machine’s acceleration.
Answer:
the answer is A
Step-by-step explanation:
634.9201 rounded to 1 decimal place
The parabola y = x is shifted up by 7 units and to the left by 1 unit. What is the equation of the new parabola ?
1 + 5
solution +155
mstr pabola cand off break fast is an 12552
what fraction is equivalent to 4 3/4
Answer:
19/4
Hope this helps!
Answer:
Is there any answer choices??
PLEASE HELP ASAP
Amy has x counters, Baz has eight more counters than Amy, Carla ahs 3 times as many counters as Baz, write an expression for the total number of counters they have in your simplest form
Answer:
5x+32
Step-by-step explanation:
So write out as an expression
Amy= x
Baz = x+8
Carla = 3(x+8)
Total= x +x + 8 +3x+ 24
= 5x+32
Find the distance between the points G(−5, 4) and H(2, 6).
Answer:
=√18 or 4.24264068712
Step-by-step explanation:
used the distance formula
what is 70% of 900 please help me
Answer:
630
Step-by-step explanation:
cause thats the answer
I'm stuck here, please help
Answer:
Are you stuck step-sis?
Step-by-step explanation:
What are the first THREE equivalent fractions for 4/6?
Answer:
2/3, 8/12, 12/16 I think
2/3,6/9,8/12
........
Does anyone know if im correct on this!?!?
Answer:
You are correct.
Step-by-step explanation:
The steps indicate clear method for the final answer.
Answer:
you are correct
Step-by-step explanation:
If 5% of an item is $0.50, what is the original price?
Answer:
$10
Step-by-step explanation:
0.05x=0.50
x=10
Your friend shows you a coin collection. In it, 48/50 of the coins are quarters. What percent of the coins are quarters?
Answer:
If you take 50 and multiply it by two, you get 100. But, in order to get the right number, you have to multiply 45 by two as well. 45 x 2 is 90. 90 out of 100 is 90 percent. So 90% is the answer
Step-by-step explanation:
Answer:
96% or .96
Step-by-step explanation:
48 divided nu 50 equals .96 which then equals to 96 percent.