20 Points + Brainlest
Determine if the following system of equations has no solutions, infinitely many solutions or exactly one solution.
-x+5y=-7
-3x +14y=-18
Answer:
One solution:(-8,-3)
Step-by-step explanation:
x = 5y + 7
Plug this in for variable x in equation [2]
[2] -3•(5y+7) + 14y = -18
[2] - y = 3
Solve equation [2] for the variable y
[2] y = - 3
By now we know this much :
x = 5y+7
y = -3
Use the y value to solve for x
x = 5(-3)+7 = -8
Solution :
{x,y} = {-8,-3}
Hope this helps plz mark brainliest if correct :D
I don't understand this
1. This equation shows how the total number of appetizer recipes Carly knows depends on the number of weeks she attends culinary school. a = 2w. The variable w represents the number of weeks she has attended culinary school, and the variable a represents the total number of appetizer recipes she knows. After how many weeks of culinary school will Carly know a total of 8 appetizer recipes? *
Answer:
16 weeks
Step-by-step explanation:
Set up a proportion with the equation.
a = 2w
8
2 x 8= 16 then 16/1=16
so she was at school for 16 weeks.
Im struggling please help!!! Determine whether the given point is on the line and explain how you know. (4,-6)
y=1/2x-10
AnswerLet's simplify step-by-step.
(4−6)(1)
2
x−10
=−x+−10
Answer:
=−x−10
:Step-by-step explanation:
i hope i helped
Given the function f(x) = x^2, which of the following represents a vertical shift of 3 units up
Answer:
y==1/4
Step-by-step explanation:
Vertex:
(
0
,
0
)
Focus:
(
0
,
1
4
)
Axis of Symmetry:
x
=
0
Directrix:
y
=
−
1
4
x
y
−
2
4
−
1
1
0Vertex:
(
0
,
0
)
Focus:
(
0
,
1
4
)
Axis of Symmetry:
x
=
0
Directrix:
y
=
−
1
4
x
y
−
2
4
−
1
1
0
0
1
1
2
4
Tap to view steps...
image of graph
Tap to hide graph...Vertex:
(
0
,
0
)
Focus:
(
0
,
1
4
)
Axis of Symmetry:
x
=
0
Directrix:
y
=
−
1
4
x
y
−
2
4
−
1
1
0
0
1
1
2
4
Tap to view steps...
image of graph
Tap to hide graph...0
1
1
2
4
Tap to view steps...
image of graph
Tap to hide graph...
What is the value of x when solving the equation -2x+(-8) - 2x+8using algebra tiles?
Answer:
-4x i believe
Step-by-step explanation:
Write an inequality for:
"The legal speed on a highway is at most 65 miles per hour."
Answer:
L ≤ 65
Step-by-step explanation:
Less than or equal to 65 which means at the peak (most) it is 65 MPH :)
What is the equation of this line?
A. y = 2x - 3
B. y = -1/2x - 3
C. y = -2x - 3
D. y = 1/2x - 3
Answer:
A. y = 2x - 3
Explaination:
It can't be negative because then the slope would be going downward from left to right, this line is going upwards. Also, the steepness of the slope proves it is a slope of 2 because a slope of 1/2 isn't very steep. You can also count 1 unit over and look how much the line changes to find the slope.
Answer:
A
Step-by-step explanation:
X intercept : (3/2 , 0)
Y intercept : (0 , -3)
Slope: m=2
HELP I NEED ANSWER I GIVE BREAINEST
Answer:
V=9
Step-by-step explanation:
V=LxWxH
V=3x3x3
Evaluate 1/3b + 1/5 when b=1/5
Answer:
4/15.
Step-by-step explanation:
1/3(1/5) + 1/5
1/15 + 1/5
1/15 + 3/15
4/15
Answer:
4/15
Step-by-step explanation:
[tex]( \frac{1}{3} \times \frac{1}{5} ) + \frac{1}{5} \\ \frac{1}{15} + \frac{1}{5} \\ \frac{1}{5} + \frac{3}{13} \\ \frac{1 + 3}{15} = \frac{4}{15} [/tex]
A tanker truck fills the gas station's reservoir at the rate of 1212 gallons per minute. If the reservoir was empty and it is now 35 gallons full, how long has the tanker been filling the reservoir? Round your answer to the nearest tenth. Enter your answer in the box.
Answer:
2.9 minutes
Step-by-step explanation:
Given
[tex]Rate = 12 gallon/minute[/tex]
[tex]Size = 35\ gallon[/tex]
Required
Determine the time spent
The rate is a ratio of size to time
So, it can be expressed as:
[tex]Rate = \frac{Size}{Time}[/tex]
Substitute values for Rate and Size
[tex]12 = \frac{35}{Time}[/tex]
Cross Multiply
[tex]12 * Time = 35[/tex]
Solve for Time
[tex]Time = 35/12[/tex]
[tex]Time = 2.9[/tex] (approximated)
Find the measure of angle 4
Answer:
i feel this is an incomplete picture
Step-by-step explanation:
Which relations are functions? Select all that apply.
Answer:
A and C
Step-by-step explanation:
B has a domain connected to many other ranges which makes a relationship but confuses the whole function making it incorrect.
For answer D, the x coordinates 1 and 3 both have two y coordinates. That again makes a relationship but confuses the function making that answer incorrect.
In answer A, no domain is repeated in any of the points making it a function.
In answer C, again no domains are paired with more than one range making it a function. That why A and C are the answers
In the 2008 election there were 28 blue states and 22 red states express the red and the blue states as fractions in the lowest terms of the total number of states and also as decimals.
How much will 5 ounces of yogurt cost
Answer:
5/8 cups
Step-by-step explanation:
I need help on this assignment
Answer:
1.___ b
2.___c
3.___a
4.___d
Step-by-step explanation:
5% of x is =8
5/100 * X= 8
x=8*100/5=800/5=160
12% of x =5
x=41.666 approximately
8% of x=12
x=12*100/8=1200/8=150
5% of x= 12
x=12*100/5=1200/5=240
Tyler’s mom purchased a savings bond for Tyler. The value of the savings bond increases by 4% each year. One year after it was purchased, the value of the savings bond was $156. Find the value of the bond when Tyler’s mom purchased it.
Answer: 150
Step-by-step explanation:
Because
Answer:
150 baes <33 .
Which problem could be solved with the expression 3 x (5 - 2) - 1?
Choose 1 answer:
Stephanie had 3 apples. She then found 5 more but immediately ate 2 of them. Several
minutes later, she ate 1 more. How many apples does she still have?
Orlando had 5 action figures but decided to give 2 of them to his younger brother. His parents
were so impressed with his kindness that they tripled the action figures he had left. Since he
got so many new action figures, he then gave 1 more to his brother. How many action figures
does he now have?
Of Ralph's 5 toy cars, he gave 2 to his sister. After that, he found 1 more toy car. Then, he
decided to go to the store and triple his number of cars. How many toy cars does Ralph have
now?
Answersss please hurry I will give you Brainliest
Ans
B,D,F
Step-by-step explanation:
Y=5-x^2
Y=3x^2+1
Y=x^3
36 meters/minute= I dont know this answer and my homework is due in 3 minutes
Answer:
are you trying to find out how many meters per hour or second i have no context but if it is seconds then it is 1.667 meters per second
Step-by-step explanation:
Prove the theorem: In a plane, if a transversal is perpendicular to one of two parallel lines, then it is perpendicular to the other. Given the facts RS ⊥ CD and AB || CD, drag and drop each reason next to the appropriate statement in order to prove the statement RS ⊥ AB.
Answer:
The theorem requiring proof;
A transversal perpendicular to one of two parallel lines is also perpendicular to the other parallel line
The two column proof is as follows
Statement [tex]{}[/tex] Reason
RS ⊥ CD [tex]{}[/tex] Given
AB ║ CD [tex]{}[/tex] Given
The Slope of AB = The slope of CD [tex]{}[/tex] definition of parallel lines
The Slope of RS = -1/(The slope of CD) [tex]{}[/tex] definition of perpendicular lines
The Slope of RS = -1/(The slope of AB) [tex]{}[/tex] transitive property of equality
The Slope of RS = -1/(The slope of AB) [tex]{}[/tex] definition of perpendicular lines
RS ⊥ AB
Step-by-step explanation:
write a proof to prove that angle BOA and angle COD are congruent
Answer:
O is not on there
Step-by-step explanation:
Can someone please help me????? Please I'm not good with Geometry
In order to safely clear a hurdle, a track runner must jump the hurdles with an angle of 30°. Find the height of the hurdle and the horizontal distance traveled if the runner covers a distance of 5 feet
The hurdle and runner form a right triangle (see attached picture) such that
sin(30°) = h / (5 ft)
and
cos(30°) = x / (5 ft)
where h is the height of the hurdle and x is the horizontal distance from where the runner jumps to the hurdle. So
h = (5 ft) sin(30°) = 5/2 ft = 2.5 ft
x = (5 ft) cos(30°) = (5√3)/2 ft ≈ 4.33 ft
The Collatz conjecture is one of the most famous unsolved mathematical problems, because it's so simple, you can explain it to a primary-school-aged kid, and they'll probably be intrigued enough to try and find the answer for themselves.
Hi, you've asked an incomplete question. However, I inferred you need a brief explanation about The Collatz conjecture.
Explanation:
Put simply, what the Collatz conjecture unsolved problem entails is that if any positive number is picked and it is:
An even number (eg 2, 4, 6,...), then if they are divided by 2, the new number gotten should undergo the same process (that is to be divided by 2), it is believed your calculation would finally end up at 1. For example, let's pick the number 6, (6÷2=4; repeating the process 4÷2=1)An odd number, then if they are multiplied by 3 and 1 is added to the result, it is believed that your calculation would finally end up at 1.What is the main purpose of informational writing?
To compare and contrast
To present popular views on a topic
To express opinions without evidence
To inform readers about a topic using facts and details
Answer:
The correct answer is:
"To inform readers about a topic using facts and details"
Step-by-step explanation:
Let us define informational writing first.
Informational writing is like communication writing which is used to convey something using facts and figures. Whatever is stated in an informational writing, it is supported by related facts and proofs.
Hence,
The correct answer is:
"To inform readers about a topic using facts and details"
Graph y = -x + 6 On A Graph
Answer:
Step-by-step explanation:
Helppppppppppppppppppp
PLZ HELPPP 30 PTS ITS TAN?
Answer:
What do you need help with? I'm more than welcome to help you if you need with anything.
Step-by-step explanation:
keith is an elevator operator in a big hotel. A(t)A(t)A, left parenthesis, t, right parenthesis models Keith's altitude (in meters relative to the ground) as a function of time (in minutes).Match each statement with the feature of the graph that most closely corresponds to it.
Answer:
Step-by-step explanation:
A relative maximum (or minimum) point is a point that is higher (or lower) than all of the points surrounding it.
This graph has a relative minimum point where A(t)=-12A(t)=−12A, left parenthesis, t, right parenthesis, equals, minus, 12, which means that Keith's lowest altitude was \textit{12}12start text, 12, end text meters below the ground.
A positive (or negative) interval is a domain interval over which the function values are all positive (or negative).
Since A(t)>0A(t)>0A, left parenthesis, t, right parenthesis, is greater than, 0 over the interval [6.5,10][6.5,10]open bracket, 6, point, 5, comma, 10, close bracket, this is a positive interval. This means that between the \textit{6.5}6.5start text, 6, point, 5, end text- and \textit{10}10start text, 10, end text-minute marks, Keith was above the ground.
An increasing (or decreasing) interval is a domain interval over which the function values increase (or decrease) as the input variable increases.
In this graph, the interval, 5, point, 5, comma, 8, close bracket is an increasing interval. This means that between the end text-minute marks, the elevator was going up.
Find the measure of ∠z.
A.120°
B.30°
C.40°
Answer:
B. 30
Step-by-step explanation:
The angle is 90 degrees total
The picture says z + 60 = 90
z = 30
Answer:
B. 30
Step-by-step explanation:
The angle on the other side is 90 degrees. That means that the angle on this side has to be 90 degrees. Part of it is 60, so that means that the other is 30 degrees.
what is the ratio of girls to total students in class if a class has 14 girls and 20 boys?