Pleeaase help.......
Select ALL the correct answers
Which equations have infinitely many solutions?
Answers
Answer:
The 1st, 3rd and 4th
Step-by-step explanation:
Answer:
Options B and D
Step-by-step explanation:
Let's solve each equation:
x-3x=-2x+4
-2x=-2x+4
0=4
No solutions, so A is wrong
x-1/3(3x)=0
x-(3x/3)=0
x-x=0
0=0
Infinitely many solutions, so B is correct
1/3x-3=4+2x
1/3x=7+2x
-5/3x=7
x=-21/5
One solution, so C is incorrect
3x+2-1/3(3x)=2+2x
3x+2-(3x/3)=2+2x
3x+2-x=2+2x
2x+2=2+2x
2x=2x
0=0
Infinitely many solutions, so D is correct
x-1/3x+2=0
2/3x+2=0
2/3x=-2
x=3
One solution, so E is incorrect
As you can see, when both sides of the equations are equal to each other such as 0=0 and x=x, you'll always have infinitely many solutions. Therefore, options B and D are correct
Related Questions
what is "The temperature outside at 6 a.m. is 4 degrees celsius. The temperature rising by 1.5 degrees celsius every hour." in a mathematical equation!! please help
Answers
Answer:
7 a.m is 5.5
Step-by-step explanation:
(6=4)+1.5=(_+1.5)
make a T chart
thats how it should work for you
A middle school took all of its 6th grade students on a field trip to see a play at a theater that has 3100 seats. The students left 1395 seats vacant. What percentage of the seats in the theater were filled by the 6th graders on the trip?
Answers
Answer: 55% of the seats in the theater were filled by the 6th graders on the trip.
Step-by-step explanation:
Given: Total seats = 3100
Seats vacant= 1395
Seats occupied by 6th graders = 3100-1395 = 1705
The percentage of the seats in the theater were filled by the 6th graders on the trip = [tex]\dfrac{\text{Seats occupied by 6th graders}}{\text{Total seats}}\times100[/tex]
[tex]=\dfrac{1705}{3100}\times100\\\\= 55\%[/tex]
Hence, 55% of the seats in the theater were filled by the 6th graders on the trip.
WHOEVER ANSWERS IT WILL GET BRAINIST ASAP DUE IN 5 MINUTES
Answers
Answer:
D
Step-by-step explanation:
can someone help me with this one ?
Answers
Answer:
For the question 7 its congruent for 8 it's not congruent
Step-by-step explanation:
People at the state fair were surveyed about which type of lemonade they preferred. The results are shown below:
Pink Lemonade: 156 males, 72 females
Yellow Lemonade: 104 males, 48 females
Answers
Answer
Step-by-step explanation:
You would require the table with the number of males and females who prefer either pink or yellow lemonade at the state fair.
Pink Lemonade Yellow Lemonade TOTAL
Male 156 104 260
Female 72 48 120
TOTAL 228 152 380
P(pink lemonade | female) = 72 / (48 + 72) = 72 / 120 = 0.6
P(pink lemonade) = (156 + 72) / (156 + 72 + 104 + 48) = 228 / 380 = 0.6
Therefore, The event "prefers pink lemonade" and "female" are independent because P(pink lemonade | female) = P(pink lemonade) = 0.6
Independents events are events that can happen independently on their own. Events A and B are independent if P(A|B) = P(A).
The "prefer pink" event and "female" event are independent because [tex]P(P|F) = P(P) = 0.6[/tex]
To do this, we make the following representations:
[tex]P \to[/tex] Pink Lemonade
[tex]Y \to[/tex] Yellow Lemonade
[tex]M \to[/tex] Male
[tex]F \to[/tex] Female
The "prefer pink" event and "female" event are independent if:
[tex]P(P|F) = P(P)[/tex]
[tex]P(P|F) \to[/tex] the probability that a selected person prefers pink provided that the person is female
[tex]P(P) \to[/tex] the probability that a selected person is female
P(P| F) is calculated as:
[tex]P(P| F) = \frac{n(P\ n\ F)}{n(F)}[/tex]
i.e. the number of females who prefers pink divided by the number of females
From the table, we have:
[tex]n(P\ n\ F) = 72[/tex]
[tex]n(F) = 72 + 48 =120[/tex]
So, the probability is:
[tex]P(P| F) = \frac{72}{120}[/tex]
[tex]P(P| F) = 0.6[/tex]
[tex]P(P)[/tex] is calculated as:
[tex]P(P) = \frac{n(P)}{Total}[/tex]
i.e. the all people who prefer pink divided by total number of people
From the table, we have:
[tex]n(P) = 156 + 72 = 228[/tex]
[tex]Total = 156 + 72 + 104 + 48 = 380[/tex]
So, the probability is:
[tex]P(P) = \frac{228}{380}[/tex]
[tex]P(P) = 0.6[/tex]
Recall that:
The "prefer pink" event and "female" event are independent if:
[tex]P(P|F) = P(P)[/tex]
And we have:
[tex]P(P| F) = 0.6[/tex]
[tex]P(P) = 0.6[/tex]
Hence, the events are independent because:
[tex]P(P|F) = P(P) = 0.6[/tex]
Option (a) is correct
Read more about independent events at:
https://brainly.com/question/12543071
Evaluate the following numerical expression.
6 + 2^3 • 3 =
Answers
Answer:
30
Step-by-step explanation:
2^3=8
8x3=24
24+6=30
Leon is using an area model to multiply 38×14. First, he makes a rectangle that is 38 units long and 14 units tall. Then, he breaks it into smaller parts using place value to make it easier to multiply. Use the drop-down menus to show the area of each part.
Answers
Answer:
300, 120, 80 and 32 respectively.
Step-by-step explanation:
To break it down for easy multiplication, write
38 as 30 + 8
14 as 10 + 4
Now let's multiply
(30 + 8)(10 + 4) = 300 + 120 + 80 + 32
So the areas of each part would be
300, 120, 80 and 32 respectively.
2 3 4 5 6 7 8 9 10
TIME REMAINING
41:13
The Bears have won 7 and tied 2 of their last 13 games. They have not forfeited any games. Which ratio correctly compares their wins to losses?
7:13
13:7
4:7
7:4
Answers
PLS HELPPPPP
This is due today....
Answers
Answer:
its B becuase the exspresion of it is the hours of the 16 like 8 16 like that
Step-by-step explanation:
Identify the transformation, and its congruence transformation?
Answers
Answer:
Reflection
Step-by-step explanation:
You only flip the triangle it doesn't rotate or slide so its Reflection
PLEASE HELP IT IS EASY!!!!!!!!!!!!!! I HAVE AN EXAM!!!!!!!!!!!!!!! A student took 75 minutes to answer a combination of 30 multiple-choice and extended-response questions. She took 2 minutes to answer each multiple-choice question and 5 minutes to answer each extended-response question.
Determine which two equations best represent the situation given that R represents the number of extended-response questions and M represents the number of multiple-choice questions.
Determine the number for each type of question on the test.
Answers
Answer:
M+R=30
2M+5R=75
R=5
M=25
Step-by-step explanation:
-2(M+R=30)
2M+5R=75
-2M-2R=-60
2M+5R=75
__________
3R=15
R=5
2M+5(5)=75
2M+25=75
2M=50
M=25
are you smarter than a 7th grader get your answers by answering this question please please please please please
Answers
Answer:
F
Step-by-step explanation:
8 - (2-3) -1 = 8
6 - (-2) = 8
8-(2-3)-1=6-(-2)
If the vertex of a parabola is (- 3, 4) and the parabola has a stretch of 3find the next two points on the parabola right the vertex
Answers
Answer:
Step-by-step explanation:
Need help asap please
5 x 2 = what pls
3. a) The dimensions of your game cover are 20 cm x 15 cm. However, you need to have a strip of
constant width around the border for labeling purposes (game console type, etc). This width will
take up 32% of your game cover's total space. What is the width of the border? Make sure to
state any values that don't make sense.
Answers
20cm×15 cm =300
32
/100 = 0.32
9514 1404 393
Answer:
1.5 cm
Step-by-step explanation:
All areas are in cm^2. For a width w, the border will have an area equal to the product of its centerline length and its width:
border area = 2((20-w) +(15-w))·w = w(70 -4w)
This area is 32% of the total cover area, so is ...
0.32(20)(15) = 96
Equating these expressions for the area gives ...
96 = 70w -4w^2
w^2 -17.5w = -24 . . . . . divide by -4
w^2 -17.5w +8.75^2 = -24 +8.75^2 . . . . . complete the square
(w -8.75)^2 = 52.5625 . . . . simplify
w -8.75 = ±√52.5625 = ±7.25
A border width only makes sense if it is between 0 and 7.5 cm, so the appropriate value for w is ...
w = 8.75 ± 7.25 . . . . . . . . . add 8.75
w = 8.75 -7.25 = 1.50 . . . . . the solution w=16 makes no sense
The border width is 1.5 cm.
I reallyyy need help... this is due today And I don’t know how to do it
Answers
1.25 × 109 + 3.50 × 109 + 3.25 × 109 =
Answers
Answer:
872 is the final answer
Step-by-step explanation:
Answer: The answer is 872
Step-by-step explanation:
Answer and ill mark brainlist!!
Answers
Answer:
the slope is 1
Step-by-step explanation:
Full equation is y=x+4
A blue print for a house has a scale of 1 in: 5feet The living room has a length of 25 inches and a width of 3 inches what is the actual area of the living room
Answers
Answer: 1875 square ft
Step-by-step explanation:
Ratio: 1 in: 5ft
Living room length: 25in=125ft
Living room width: 3in=15ft
125x15= [tex]1875^{2} ft\\[/tex]
Please help me with this i can't think Please and thank you
Answers
Answer:
hot ❤
Step-by-step explanation:
PLEASE HELP ILL GIVE THE BRAINLEST FOR THE RIGHT ANSWER
graph y= -1/2-6
Answers
If a = 3, what is the value of 2a^2
Answers
Answer:
18
Step-by-step explanation:
2(3)^2
2(9)
18
Answer:
The answer is 18.
Step-by-step explanation:
2a²
2(3)²
2(9)
18
ASAP ASAP ASAP ASAP. PLS PLSPLS
Answers
solve for c: 2(c - 6) = 9c + 2
Answers
Hope this picture helps
7.
After determining the number of T-shirts and caps to purchase, the senior
class officers forgot to include shipping costs. The fabric textile company
charges shipping and handling fees according to the number of T-shirts and
caps purchased
One of the class officers writes the function f(n) = 20n + 275, where n is the
number of T-shirts purchased, and f(n) is the amount of money available to
spend on caps.
Which description does 20 represent in the class officer's function? Select all
that apply.
A. the shipping cost
B. the cost per T-shirt
C. the rate of change in the graph
D. x-intercept
Ey-intercept
Answers
Answer:
B
Step-by-step explanation:
Say the fraction in decimal form. 1/10
Answers
Answer:
0.1
Step-by-step explanation:
Please mark me brainleist
1. Calculate the slope of Graph D. Explain or show your reasoning
2. Calculate the slope of Graph E. What situation could the graph represent
3. On the blank grid , draw a line that passes through the indicated point and has the slope -2.
Answers
Answer:
Step-by-step explanation:
1). Slope of a line shown on the graph will be,
Slope = [tex]\frac{\text{Rise}}{\text{Run}}[/tex]
= [tex]\frac{-4}{1}[/tex]
= -4
2). Slope of the given horizontal line can be determined by,
Slope = [tex]\frac{\text{Rise}}{\text{Run}}[/tex]
Since, rise of the given line is zero.
Therefore, slope of the given horizontal line will be 0.
3). Slope of the line passing through the indicated line = -2
Therefore, a line which has a rise = -2 and run = 1 can be drawn on the given blank grid (As attached).
Answer:
Step-by-step explanation:
1. -4. Explanations vary. Sample explanation: for each horizontal change of 1, the vertical change is -4, so the slope of the line is -4.
2. 0. Responses vary. Sample response: The amount of rainfall on a day with no rain.
3. A graph through the indicated point with a slope of -2.
What's the pattern 7,19,31,43
Answers
It’s 7, 19, 31, 43
Explanation:
You already have it.
7+12=19
19+12=31
31+12=43
Please help as soon as possible! Thank you
Answers
Answer:
line PQ is congruent to like SR. reason: given
angle PQR is congruent to angle SRQ. reason: given
Line QR is congruent to line QR. reason: reflexive property of equality.
Triangles PQR and SQR are congruent by the SAS postulate
Step-by-step explanation:
What value of x satisfies the following equation?
X + 21 = 27
A. 3
B. 5
C. 6
D. 8
Answers
Answer:
The answer is C.(6)
Step-by-step explanation:
6+21=27
1/5 ( 15 + 10k ) = please help and make sure your answer is accurate.
Answers
This is because multiplying by 1/5 is like dividing each term by 5
10k + 15 = 5 • (2k + 3)
