The work of a student to solve the equation 3(2x − 4) = 8 + 2x + 6 is shown below: Step 1: 3(2x − 4) = 8 + 2x + 6 Step 2: 5x − 7 = 14 + 2x Step 3: 5x − 2x = 14 + 7 Step 4: 3x = 21 Step 5: x = 7 In which step did the student first make an error and what is the correct step? (5 points) Group of answer choices Step 3; 5x + 2x = 14 + 7 Step 3; 5x − 2x = 14 − 7 Step 2; 6x − 12 = 14 + 2x Step 2; 6x − 7 = 2(6 + x + 4)
Please answer this equation 4x+1-1 > -8
Answer:
+1-1=0
4x>-8
x>-2
Step-by-step explanation:
Answer:
x>−2
Step-by-step explanation:
Ben can jump rope forward, backward, and crossways! An eight-foot rope is too long for his height, so he shortened the rope by nine inches. How long is his jump rope now?
Answer:
87 inches
or
7.25 feet
Step-by-step explanation:
1 foot = 12
8 foot = 96 inches
96 - 9 = 87
87 inches
or
7.25 foot
Henrietta did an experiment. She started out with 800 bacteria cells. She found that the growth rate of the bacteria cells was 3.2%. Sketch the graph that represents the situation. Label the y-intercept and the point that represents the projected bacteria population 35 h from the time Henrietta started the experiment. I need help asap please
Answer:
See belowStep-by-step explanation:
Given
Initial number of bacteria = 800Growth rate = 3.2% = 1.032 timesRequired equation:
B(t) = 800(1.032)^t, where B- number of bacteria, t- time in hoursThe y-intercept is:
B(0) = 800*1.032^0 = 800The point (0, 800)Bacteria population 35 in hours:
B(35) = 800*1.032^35 = 2409The point (35, 2409)Which of the decibes a unique polygon?
Answer:
In geometry, a polygon can be defined as a flat or plane, two-dimensional closed shape with straight sides. It does not have curved sides.
Step-by-step explanation:
Help me ASAP this answer is a lil tough
which graph represents the line of best fit for the scatter plot??
Answer:
C
Step-by-step explanation:
The line isn't too high or low.
A bag with 10 marbles has 2 yellow marbles, 4 blue marbles, and 4 red marbles. A marble is chosen from the bag at random. What is the probability that it is yellow?
Answer:
P(Y) = 2/10 = 1/5
Step-by-step explanation:
From the above question:
Total number of marbles = 10 marbles
Number of yellow marbles = 2 yellow marbles
Number of blue marbles = 4 blue marbles
Number of red marbles = 4 red marbles.
The probability of choosing a marble that is yellow is calculated as:
= P(Y) = Number of yellow marbles/Total number of marbles
P(Y) = 2/10
P(Y) = 1/5
2 3/8 • 1 1/6
Help step sis I'm stuck
Answer:
2.77083333333
Step-by-step explanation:
I assume. Do not hold me account for mistakes, I apologize if my work is incorrect. Have a good day/night :}
I need help, correct answer will get brainliest!
Answer:
The answer is 9.
PLS HELP ASAP...Im lost
Answer:
With what, I don't see anything?
I need help on this
Answer:
Correlation!
Step-by-step explanation:
The points are all pretty much in a line, they are corellated.
the definition of correlation is “a mutual relationship or connection between two or more things.” so all of these points are connected and form, more or less, a line
9p²-?p+49
In order for the following expression to be a perfect square trinomial, fill in the missing number
Answer: ? = 42
Step-by-step explanation:
(a-b)² = a² - 2ab + b². From 9p² -?p + 49 we see
9p² = (3p)² and 49 = 7² Then Middle term is -2·(3p)·7 = -42p
30 pts pls awnser all questions i give BRAINLIEST help meee
Answer:
Step-by-step explanation:
It is non-linear. A linear function can be written in the form y = mx + b
What is the possible number of turns for a square
Answer: 5
Step-by-step explanation:
can someone that is knowledgeable of the subject help me?
Answer:
h = 84.96m
Step-by-step explanation:
hope this helped
The Sum of the angles of a regular
polygon is 2 520". How many sides does
the polygon have?
Answer:
hi bye good luck
Step-by-step explanation:
Answer:
idek;)
Step-by-step explanation:
please answer this question!! whoever answers correctly will get brainiest!!!
Answer:
x
=
2
Step-by-step explanation:
Answer:
Hello! answer: x = 12
Step-by-step explanation:
with these you have to cross multiply so 2 x 24 = 48 so now we know that 4 multiplied by something will equal 48 so we can simply do this by doing 48 ÷ 4 and 48 ÷ 4 = 12
Please I need help!!!!!
Answer:
Solution given:
we have
f(x)=x²-9x-36
let
y=x²-9x-36
when
x=0
y=-36
when
y=0
0=x²-9x-36
x²-12x+3x-36=0
x(x-12)+3(x-12)=0
(x-12)(x+3)=0
either
x=12
x=-3
So,
x and y intercepts are (-3,0)(12,0) and 0,-36)
find the solution of the system of equations.
2x+4y=-14
x-2y=9
Describe all the x-values at a distance of 20 or less from the number 12. Enter your answer in interval notation.
Answer: [tex]12< x \leq 20[/tex]
Step-by-step explanation:
Given
x is at a distance of 20 or less i.e. x can be 20 or less
[tex]x\leq20[/tex]
and it starts from the number 12 i.e.
[tex]12< x[/tex]
In interval notation it is
[tex]12< x \leq 20[/tex]
divide 103.2 tonnes in the ratio 5:3
Answer:
[tex]\frac{64.5}{38.7}: \frac{5}{3}[/tex]
Step-by-step explanation:
5 : 3
5 + 3 = 8
103.2 ÷ 8
12.9
12.9 × 3
38.7
12.9 × 5
64.5
--
The ratio of red to black socks is 1 to 4. If there are 20 black socks how
many red socks are there?
Answer:
5 red socks are with the 20 black socks
Step-by-step explanation:
20(1/4)=5
1) which of the following numbers is 90 divisible by?
2, 3, 4, 5, 6, 9, 10
2, 3, 4, 5, 6, 9 and 10 only
1, 2, 3, 6, 9, and 10 only
2, 5, 9, and 10 only
2,3,5, 6, 9, and 10 only
Answer:
2,3,5,6,9 and 10
Step-by-step explanation:
90÷2 =45
90÷3 =30
90÷5 =18
90÷6 =15
90÷9 =10
90÷10=9
6. The swing set on the playgrounds is getting wobbly, and you have been asked to put outrigger boards to help stabilize it. If the crossbar of the swing is 10 feet off of the ground, the outrigger to be attached at a 40 degree angle, and you want to bury the outrigger boards 3 feet onto the ground, how long would the boards have to be? (Hint: the outrigger is the hypotenuse of a right triangle)
Answer:
[tex]X=18.6ft[/tex]
Step-by-step explanation:
From the question we are told that:
Height of swing's crossbar [tex]H=10ft[/tex]
Angle [tex]\theta=40 \textdegree[/tex]
Depth of outrigger [tex]d_=3ft[/tex]
Generally the equation for slant height l is mathematically given by
[tex]l=\frac{opposite}{sin\theta}[/tex]
Therefore
[tex]l=\frac{H}{sin\theta}[/tex]
[tex]l=\frac{10}{sin 40\textdegree}[/tex]
[tex]l=15.6ft[/tex]
Since the Depth of outrigger
[tex]d_=3ft[/tex]
Therefore Length of the board X
[tex]X=l+d[/tex]
[tex]X=15.6+3[/tex]
[tex]X=18.6ft[/tex]
A cone with radius of 4 feet and a height of 9 feet what is the volume of the cone in cubic feet. Round to the nearest hundredth
Answer:
150.8 ft3
Step-by-step explanation:
Given that events A and B are independent with P(A)=0.5 and P(B)=0.15, determine the value of P(A∣B), rounding to the nearest thousandth, if necessary.
The value of the independent variable probability is P ( A | B ) = 0.5
Given data ,
Let the independent events be represented as
P ( A ) = 0.5
P ( B ) = 0.15
Now , the value of the probability P ( A | B ) is given by
And , if events A and B are independent, then P(A|B) = P(A). Therefore, in this case, P(A|B) = P(A) = 0.5
Hence , the probability is P ( A | B ) = 0.5
To learn more about probability click :
https://brainly.com/question/17089724
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HELP ASAP!!! ∠BPA is equal to 30°. Find the length of BP.
Answer:
In Fig. 8.27 , AP and, BP are tangents to a circle wit
Step-by-step explanation:
whats the y intercept 10 points help im in class
Answer:
0,4
Step-by-step explanation:
Answer:
Slope = -3
Step-by-step explanation:
What is C26 ?
12
15
8
30
Answer:C26 is also a Category of EAD (Employment Authorization Document) provided to immigrant workers in U.S. These are dependents of H1b visa holders commonly referred to as H4-EAD.
Step-by-step explanation:
Answer:
Its 15
Step-by-step explanation: