George solved the following system of equations using substitution.
y = 4.3 – 21
12x – 3y = 63
He decided there is no solution. After the following steps:
y= (4x – 21)
12x - 3(4x – 21) = 63
12:- 12.c + 63 = 63
63 = 63
Is George correct in his conclusion? If not choose the correct solution below. If he is correct, select that choice.
A) George is correct with no solution.
B) He is not right. There are infinitely many solutions.
C) He is not right. The solution is (63,63)
Answers
Answer:
B
Step-by-step explanation:
-4x + y = -21
12x -3y = 63
-4/12 = -1/3
1/-3 = -1/3
-21/63 = -1/3
If we graph the two lines, we can discover that are the same, so they have infinite points in common
Related Questions
Help
I neeed to get this question right
Answers
Answer:
6/10 is greater than 6/100
Step-by-step explanation:
6/10 = 3/5
6/100 = 3/50
3 fifties is lot more than 3 with 5 parts
hope it makes sense
Rectangle ABCD is similar to rectangle WXYZ. If the area of rectangle ABCD is 100 square inches, AD is 13 inches,
and XY is 2 inches, what is the area of rectangle WXYZ? Round to the nearest integer.
a
9 square inches
b
15 square inches
c.
7 square inches
d.
2 square inches
Answers
I would say D, 2 square inches.
Answer:
198 on edge
Step-by-step explanation
jus took the test, bouta make sum waffles rn ngl
1. Add: 85 + (-96) *
2. Subtract: -7 – 4 *
3. Multiply: 7(-12) *
4. Divide: 6÷ (-18) *
Answers
Answer:
1 ._11
2.11
3._84
4._0.333
2.-11
3.-84
4.-0.3
What is the surface area of the pyramid formed from the net shown here? The triangles are equilateral, and each triangle has a height of 5.2 centimeters. Write your answer rounded to one decimal point and with the correct unit. 6.3 Incorrect. The surface area of an equilateral triangular pyramid is given by the formula surface area = 2bh. The surface area of this equilateral triangular pyramid is 2bh = 2 × 6 cm × 5.2 cm = 62.4 square centimeters. Enter the correct answer. the net of an equilateral triangular pyramid
Answers
Answer:
the surface area of the pyramid is 62.4 square centimeters
Step-by-step explanation:
The computation of the surface area of the pyramid is shown below:
As we know that
The surface area = 2bh
= 2 × 6 cm × 5.2 cm
= 62.4 square centimeters
Hence, the surface area of the pyramid is 62.4 square centimeters
4. Which equation represents a linear function that has a slope of 5 and a y-intercept of -6?
O y=-6x+4/5
O y= 4/5x-6
O y=4/5x+6
O y = 6x+4/5
Answers
Answer:
y=5x-6
Step-by-step explanation:
Use form y= mx + b where m is the slope and b is the y intercept
If a driver takes 6 hours to get to the town market which is 336 km away from his house, what is his average speed?
Answers
Answer:
[tex]56\ \text{km/h}[/tex]
Step-by-step explanation:
[tex]t[/tex] = Time taken = [tex]6\ \text{hours}[/tex]
[tex]d[/tex] = Distance = [tex]336\ \text{km}[/tex]
Average speed is given by
[tex]s=\dfrac{\text{Distance}}{\text{Time}}=\dfrac{d}{t}[/tex]
[tex]\Rightarrow s=\dfrac{336}{6}[/tex]
[tex]\Rightarrow s=56\ \text{km/h}[/tex]
The average speed of the driver is [tex]56\ \text{km/h}[/tex].
HELP ILL GIVE BRAINLYEST!
Answers
Answer:
Im not sure but hope you find it!!
Step-by-step explanation:
Answer:
105
Step-by-step explanation:
douwdek0 The Titanic could stay afloat with four of its 16 watertight compartments flooded, more than anyone could imagine on a ship of its size. ... As the ice bumped along its starboard side, it punched holes in the ship's steel plates, flooding six compartments. In a little over two hours, the Titanic filled with water and sank. the answer is 128 if u read all this but brainlest????
HELP ASAP!!!!!!! PLEASEEEEE
Answers
Answer:
B
Step-by-step explanation:
This asks for data from multiple people, and it not just a yes or no question
First, consider the number of moves as a
sequence: 1, 3, 7, 15, 31, 63,
.
To find a pattern, look at the differences between
consecutive terms. These differences also form a
sequence.
3-1 = 2,7 – 3 = 4, ...
Complete the sequence:
2, 4, ___, ___, ____
Answers
Answer:
The sequence is 2, 4, 8, 16, 32
The next answer is 2
Step-by-step explanation:
The missing terms of the required sequence are 8, 16 and 32 respectively.
What is a geometric sequence?In a geometric sequence, the ratio of two consecutive terms are always equal.
The general expression for the nth term is given as aₙ = a₁ × rⁿ⁻¹ .
The sum of n terms for this sequence is given as Sₙ = (rⁿ - 1)/(r - 1)
The given sequence is 1, 3, 7, 15, 31, 63...
Then, the sequence formed by subtracting the consecutive terms are given as,
3 - 1, 7 - 3, 15 - 7, 31 - 15, 63 - 31 .....
Which can be rewritten as,
2, 4, 8, 16, 32......
It is a geometric sequence as ratio of the consecutive terms are equal,
4/2 = 8/4 = 16/8
Hence, the required sequence is a geometric sequence found as 2, 4, 8, 16, 32......
To know more about geometric sequence click on,
https://brainly.com/question/12687794
#SPJ2
Please someone give me correct answer to this problem.
I need help!!!!
I will mark you brainliest for the correct answer.
Please help!!!!!!!!!!!!!!!!!!!☹
Answers
Answer:
The answer is 128 degrees
I will give brainliest if you answer please
Answers
Answer:
Step-by-step explanation:
This was easy your answer is (A)
Hope This Helps
which of the following could be the lengths of the sides of a triangle?
a. 1,2,1
b.2,3,1
c.3,5,4
d.7,15,7
Answers
Answer:
C
Step-by-step explanation:
The general rule is that any two leg lengths must exceed the third.
A) won't. 1 + 1 = 2. The 2 ones lay flat across the 2.
B) 2 + 1 = 3. Won't work for the same reason as A
C) works fine. Any 2 will exceed the third.
D) can't happen. 7 + 7 < 15.
Find the percentage change from
75 to 50.
Answers
Step-by-step explanation:
50÷75 is .6667. that means that 50 is 66.7 percent of 75.
100 minus 66.7 is 33.3. It is a 33.3 percent change
Answer:
-25%
Step-by-step explanation:
hope this helps!! please mark brainliest.
A gallon of paint covers 20 ft of surface area. How many revolutions can an 8 in, wide paint roller with a diameter of 3 in make before using up a 5.
gal can of paint?
A about 127
B about 382
C about 600
D about 191
Answers
Answer:
D. about 191 ayan ang answer d.
If the slowest time and the fastest time are removed from the data, how does the new mean compare to the mean of the original data set?
A. The mean would not be comparable as the data sets are different.
B.The mean would increase as there is less variability in the data.
C. The mean would decrease as there is less variability in the data .
D.The mean would not change as the lowest and greatest values were removed .
Please help hurry
Answers
Answer:
A or C Sorry!
Step-by-step explanation:
Wayne answered 58 out of 65 questions on a test correct. What was the percentage he answered incorrectly?
A)91%
B)89%
C)11%
D)9%
Answers
Answer:
To find the percentage, take the answers right divided by the total. 58/65 is 89 percent
Answer:
C) 11%
Step-by-step explanation:
Subtract 65-58 , then divide that answer by 65(number of questions). Then multiply by 100 and round
Ruth is two times as old as Margie, and Lily is 10 years older than Ruth. If Lily is 60 years old, how old is Margie? (Let m represent the age for Margie and r represent the age for Ruth in years)
Answers
Answer:
25 years
Step-by-step explanation:
0.87 divided by 0.03
Answers
Answer:
29
Step-by-step explanation:
0.03 goes into 0.87 29 times
If you do 87/3 you get 29
same thing goes for 0.87/0.03
\begin{aligned} f(x)&=|x| \\\\ g(x)&=|x | + 1 \end{aligned} f(x) g(x) =∣x∣ =∣x∣+1 We can think of ggg as a translated (shifted) version of fff. Complete the description of the transformation. Use nonnegative numbers. To get the function ggg, shift fff by units.
Answers
Answer:
To get the function g, shift f by 1 unit.
Step-by-step explanation:
Given
[tex]\begin{aligned} f(x)&;=|x| \\ g(x)&;=|x | + 1 \end{aligned}[/tex]
Required
How do f(x) translates to g(x)
In terms of f(x), g(x) can be represented as:
[tex]g(x) = f(x) + k[/tex]
Where
[tex]f(x)= |x|[/tex]
and
[tex]k = 1[/tex]
This implies that f(x) is vertically shifted 1 unit up to get g(x)
Answer:
To get the function g, shift f up by 4 units and to the left by 2 units.
Step-by-step explanation:
To get the function g, shift f up by 4 units and to the left by 2 units.
that's the answer to the khan academy one
How many words does the average 30 month old child understand?
600 to 700 words
700 to 800 words
800 to 900 words
900 to 1000 words
Answers
Answer:
600 to 700 words, i believe that's the answer...
Step-by-step explanation:
i really hope this helps :)
find the area of the figure
Answers
Answer:
the area is 34 in to that round up
Step-by-step explanation:
What is the distance between -12 and 6 on a number line?
Answers
Answer:
18
Step-by-step explanation:
You can just do 6-(-12) a negative multiplied by a negative then turns into a positive which makes is 6+12=18
Please help with this math problem
3x + 6 ≥ 24
Answers
Answer: 1X52=73
Step-by-step explanation:
ILL GIVE U BRAINLYISST
Answers
Answer:
d
Step-by-step explanation:
Cant be negative fraction.
Answer:
D.
Step-by-step explanation:
It isn't a real number and isn't used correctly.
Translate the description as an algebraic expression:
twice the difference of c and 19
Answers
Answer:
2(c - 19)
Step-by-step explanation:
Twice the difference of c and 19
2 (c - 9)
When it says "twice the difference.." it means you will times the difference of c - 19 by 2
Answer:
Difference of c and 19=c-19
Twice of (c-19)=2(C-19).
So, the final answer is 2(c-19).
(4n + 9) + (2m + 7) = (Simplify your answer.)
Answers
☁️ Answer ☁️
annyeonghaseyo!
Your answer is:
2m + 4n + 16
Hope it helps.
Have a nice day noona/hyung!~ ￣▽￣❤️
Answer:
[tex](4n + 9) + (2m + 7) \\ = 4n + 9 + 2m + 7[/tex]
[tex] = 4n + 9 + 7 + 2m[/tex]
[tex] = 4n + 2m + 16[/tex]
[tex] = 2m + 4n + 16[/tex]
[tex]or[/tex]
[tex]2(m + 2n + 8)[/tex]
Hope it helps ✌️
11 cm
15 cm
17 cm
=??
Answers
Answer:
82,5
Step-by-step explanation:
[tex] \frac{1}{2} b \times h[/tex]
[tex] \frac{1}{2} 11 \times 15[/tex]
Kelsha purchased a prepaid phone card for $30. Long distance calls cost 21 cents a minute using this card. Kelsha used her card only once to make a long distance call. If the remaining credit on her card is $22.44, how many minutes did her call last?
Answers
Answer:
2.646
Step-by-step explanation:
please help. my grade in math is terrible all i want is help please.
Charmaine buys candy that costs $5 per pound. She will spend less than $45 on candy. What are the possible numbers of pounds she will buy?
Use P for the number of pounds Charmaine will buy.
Write your answer as an inequality solved for P.
Answers
Answer:
45 divided by 5 = p
p= 9.
....
There are 20 students in a class and 13 of these students passed their Algebra test. What percentage of these students passed their test?
Answers
Answer:
65%
Step-by-step explanation:
13÷20=.65
.65x100= 65%