Answer: C
Step-by-step explanation:
x-3y=5, y=x-7 *solve it
the answer is (8,1)
so..
C. (8,1) is a solution to both equations so it is a solution to the system
The pair (8,1) satisfies both of the given equations, so it is indeed a solution to the system, making option C correct.
For the first equation:
8 - 3(1) = 5
8 - 3 = 5
5 = 5 (True)
For the second equation:
1 = 8 - 7
1 = 1 (True)
Since both equations are satisfied when x is 8 and y is 1, the pair (8,1) is indeed a solution to both equations and therefore a solution to the system.
Estimate 29.14 x 5.2
Answer:
About 151.500
Step-by-step explanation:
Actual answer is 151.528 Just go with mental math.
Liam bought a comic book and had $5 left. If he had a total of $8 walking into the store, how much did he spend on the comic book?
Liam used the equation 5x=8 to model the problem. He said that x represents the amount of money he spent. Liam said that the solution, x=1.6, means that he spent $1.60. Is he correct? Why or why not? If he is incorrect find the correct answer showing your work.
Pls Help Me
Answer: The comic book was $3.
Step-by-step explanation:
Instead of 5x=8, it should have been 5+x=8 because he only purchased a single comic book. Subtract 5 from 8 and your X value is 3.
Answer:
Liam spent $3 on the book.
Step-by-step explanation:
Liam bought a comic book and had $5 left.
He had a total of $8 walking into the store, so he spent [tex]8-5=3[/tex] dollars on the comic book.
Liam used the equation 5x=8 to model the problem.
This is wrong. The correct form would have been [tex]8-x=5[/tex] or [tex]5+x=8[/tex] where x represents the amount of money he spent.
Hence, Liam spent $3 on the book.
transform pls in fraction (transformati in fractie pls) 3,(7)
Answer:
The fraction number is [tex]\frac{34}{9}[/tex]
Step-by-step explanation:
we have
[tex]3.777...[/tex]
This is a repeating decimal (a decimal that has a digit, that repeat over and over and over again without ever ending)
Convert to fraction number
Let
[tex]x=3.777...[/tex]
[tex]10x=37.777...[/tex]
we know that
[tex]10x-x=37.777...-3.777...[/tex]
[tex]9x=34[/tex]
[tex]x=\frac{34}{9}[/tex]
therefore
The fraction number is [tex]\frac{34}{9}[/tex]
|b|+b^3;b=-2 evaluate the expression
Answer:
-6
Step-by-step explanation:
[tex] | - 2| = 2 \\ {( - 2)}^{3} = ( - 2)( - 2)( - 2) = ( - 8) \\ \\ | - 2 | + {( - 2)}^{3 } = 2 - 8 = - 6[/tex]
To evaluate the expression |b|+b^3 when b=-2, substitute -2 for b, evaluate |b| and b^3 separately and then add the results.
Explanation:To evaluate the expression |b|+b^3 when b=-2, we substitute -2 for b in the expression.
The absolute value of a number is that number's distance from zero on a number line, regardless of which direction. This means that the absolute value of any negative number is its positive equivalent. Thus, |b| is the same as |-2|, which equals 2.
Secondly, b^3 means b multiplied by itself twice. So (-2)^3 equals -2*-2*-2 which is -8.
First, we evaluate |b|. The absolute value of -2 is 2, so |b| = 2.
Next, we evaluate b^3. (-2)^3 = -8.
Finally, we add the two results together: 2 + (-8) = -6.
Therefore, when b=-2, the expression |b|+b^3 evaluates to -6.
Learn more about Evaluating expressionshttps://brainly.com/question/4344214
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convert 35 inches into feet
Answer:
2.91666667 ft
Step-by-step explanation:
12x +10+3+8x ? What do I have to do ?
Simplifying
12x + 10 + 3 + 8x = 0
Reorder the terms:
10 + 3 + 12x + 8x = 0
Combine like terms: 10 + 3 = 13
13 + 12x + 8x = 0
Combine like terms: 12x + 8x = 20x
13 + 20x = 0
Solving
13 + 20x = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-13' to each side of the equation.
13 + -13 + 20x = 0 + -13
Combine like terms: 13 + -13 = 0
0 + 20x = 0 + -13
20x = 0 + -13
Combine like terms: 0 + -13 = -13
20x = -13
Divide each side by '20'.
x = -0.65
Simplifying
x = -0.65
Answer:
You have to do like terms
Step-by-step explanation:
12x+10+8+8x
12x+8x = 20x
10+3 = 13
your answer would be
20x+10
Solve for the indicated variable y=5x-6(x)
Answer:
x=-y
Step-by-step explanation:
2x - 3y = 3
x + 2y = 5
by substitution or elimination
2x - 3y = 3
x + 2y = 5
In the second equation we have an x-term that has a coefficient of 1 (which means the x is all by itself), so we can isolate that x and solve by substitution.
x + 2y = 5
x + 2y - 2y = 5 - 2y
x = 5 - 2y
The expression 5 - 2y will be substituted for x in the first equation.
2x - 3y = 3
2(5 - 2y) - 3y = 3
Solve for y.
2(5 - 2y) - 3y = 3
10 - 4y - 3y = 3 (distribute the 2)
10 - 7y = 3 (collect like terms)
-7y = -7 (subtract 10 from both sides)
y = 1 (divide both sides by -7)
Substitute 1 for y in the second equation to find x.
x + 2y = 5
x + 2(1) = 5
Solve for x.
x + 2(1) = 5
x + 2 = 5 (multiply)
x = 3 (subtract 2 from both sides)
Always check your work. Substitute into the original system.
2x - 3y = 3
2(3) - 3(1) = 3
6 - 3 = 3
3 = 3
x + 2y = 5
3 + 2(1) = 5
3 + 2 = 5
5 = 5
Answer:x = 3 and y = 1; (3,1)
Enter the numerical coordinates of the vertices of quadrilateral ABCD in the table. (Point A has been done for you.) Then predict the numerical coordinates of the vertices of quadrilateral A′B′C′D′ as the figure translates four different ways: 7 units up, 1 unit down, 4 units to the right, and 3 units to the left.
Answer:
Step-by-step explanation: Edmentum Answer
Answer:
Step-by-step explanation: I got it wrong lol
one fifth of a number decreased by 7
Let n = the number
(1/5)n - 7
I need the answer for number 6 please:)
Answer: 12.5
25 / 2 = 12.5
and so does
25 x .50 = 12.5
We are just cutting the price in half, or 50%.
Hope this helps you!
Malachi’s garden is 2 3/5 meters long. He wants to plant tomato plants every 1/5 of a meter. How many plants can Malachi fit?
Answer:
13 plants.
Step-by-step explanation:
We have been given that Malachi’s garden is 2 3/5 meters long. He wants to plant tomato plants every 1/5 of a meter.
To find the number of tomato plant that will fit the garden, we will divide length of garden by 1/5 as:
[tex]\text{Number of tomato plant that will fit the garden}=2\frac{3}{5}\div \frac{1}{5}[/tex]
Convert mixed fraction into improper fraction:
[tex]2\frac{3}{5}\Rightarrow\frac{2\times5+3}{5}=\frac{10+3}{5}=\frac{13}{5}[/tex]
[tex]\text{Number of tomato plant that will fit the garden}=\frac{13}{5}\div \frac{1}{5}[/tex]
Convert to multiplication problem by flipping the 2nd fraction:
[tex]\text{Number of tomato plant that will fit the garden}=\frac{13}{5}\times \frac{5}{1}[/tex]
[tex]\text{Number of tomato plant that will fit the garden}=\frac{13}{1}\times \frac{1}{1}[/tex]
[tex]\text{Number of tomato plant that will fit the garden}=13[/tex]
Therefore, 13 plants will fit Malachi's garden.
Allen Barry deposited checks
totaling $1,584.19 into his savings
account. He withdrew $96.00 while
depositing some loose change. Allen's
total deposit was $1,530.24. How much
did he deposit in loose change?
Answer:
$42.05
Step-by-step explanation:
Take $96.00 from 1,584.19 to figure out how much he had before he deposited
1,584.19 - 96 = 1,488.19
Now take away what he had after he took 96, to after he added.
1,530.24 - 1,488.19 = 42.05
Allen deposited $42.05
551.985 in expanded notation
Answer:
(5 x 100) + (2 x 50) + (1 x 1) + (9 x 0.10) + (8 x 0.01) + (5 x 0.001)
Answer:
(5 x 100) + (1 x 50) + (1 x 1) + (9 x 1/10) + (8 x 1/100) + (5 x 1/1000)
step by step explanation:
500 + 50 + 1 + 0.9 + 0.08 + 0.005
= 551.985
What is 13.56 • 10 to the power of -8
I rlly need this for math tomorrow
Answer 0.0000001356
Step-by-step explanation:Since the exponent of the scientific notation is negative, move the decimal point
8 places to the left.
A line is parallel to y = 3x - 12 and
intersects the point (1, -2). What is the
equation of this parallel line?
Answer:
y=3x-5
Step-by-step explanation:
parallel means that both lines share the same gradient.
from the equation y=3x-12 , we can deduce that the gradient is 3 because it is in the gradient-intercept form
now substitute values into formula
y-y1=m (x-x1)
y--2=3 (x-1)
expand brackets and simplify
y+2=3x-3
subtract 2 from both sides of equation
y=3x-5
what is
[tex] \sqrt{180 } [/tex]
simplified?
Answer:
Step-by-step explanation:
I don't know exactly how simplified it will be, but you can get the square root smaller.
180: 2*2 * 3*3 *5
For every pair of prime factors you can take 1 of the pair outside the the square root and throw the other one away
sqrt(2*2*3*3*5) = 2 * 3 * sqrt(5) = 6*sqrt(5)
A lawyer has an annual income of $173, 482 and will pay a 5.5% income tax rate. What is the amount of income tax in dollars and cents that the lawyer will have too pay?
Final answer:
The lawyer with an annual income of $173,482 and a tax rate of 5.5% will pay $9,541.51 in income taxes.
Explanation:
To calculate the amount of income tax that the lawyer needs to pay, we multiply their annual income by the income tax rate. In this case, the lawyer has an annual income of $173,482 and the income tax rate is 5.5%. The calculation would be:
Income Tax = Annual Income × Income Tax Rate
Income Tax = $173,482 × 0.055
Income Tax = $9,541.51
Therefore, the lawyer will pay $9,541.51 in income taxes.
HELP WITH THE ONES CIRCLED PLEASE HELP ASAP
Answer:
4. as they move clockwise they change/gain .01 points
5. .32 , .33 , .34 , .36 , .37 , .39
.8 , .81 , .83 , .85 , .86 , .88
Step-by-step explanation:
how many vertical asymptotes does the graph of this function have? f(x)=5/3x(x+1)(x-7)
Answer:
The graph of the function has three vertical asymptotes
Step-by-step explanation:
we have the function
[tex]f(x)=\frac{5}{3x(x+1)(x-7)}[/tex]
we know that
To find the vertical asymptotes of a rational function, simply set the denominator equal to 0 and solve for x.
so
[tex]3x(x+1)(x-7)=0[/tex]
The values of x are x=-1,x=0, x=7
using a graphing tool
see the attached figure to better understand the problem
therefore
The graph of the function has three vertical asymptotes
Answer:
3. The answer is 3
Step-by-step explanation:
Let's assume that bacteria doubles every 10 minutes. If a culture begins with exactly
30 bacterial cells, how many bacteria will be present after 1 hour?
A 960 Bacteria
B 1000 Bacteria
C 1520 Bacteria
D 1920 Bacteria
Greetings!
First off, we should know that there are 60 minutes in an hour. Therefore, the first step we will need to do, is divide 60 by 10.
60 ÷ 10 = 6
As shown above, we now know we will have to double the number 6 times. If we start with 30, this will be our first problem.
(1) 30 + 30 = 60
And so on and so forth...
(2) 60 + 60 = 120
(3) 120 + 120 = 240
(4) 240 + 240 = 480
(5) 480 + 480 = 960
(6) 960 + 960 = 1920
And after our sixth time we have our answer:
1920 bacteria
Hope this helps!
~Fluerie
can anyone find the measurements of these angles (#7 ONLY THANK U)
Identify the x-intercept.
1) y= 1/5x + 3
2) y= 6x - 7
3) y= -8/3x + 9
Answer:
Step-by-step explanation:
the x-intercept when y = 0
1 ) 1/5 x +3 =0 1/5x = - 3 so : x = -15
2) 6x -7 = 0 6x = 7 so ; x =7/6
3) -8/3x +9 = 0 -8/3 x = -9 so : x =27/8
How to write 12 ten thousands 8 thousands 14 hundreds 7ones
Answer:
129,407.
Step-by-step explanation:
12 ten-thousands = 12*10000=120,000.
8 thousands = 8*1000=8000;
this gives us 120,000+8,000=128,000.
14 hundreds = 14*100=1400;
this gives us 128,000+1,400=129,400.
7 ones = 7*1=7;
this gives us 129,400+7=129,407.
Answer:
12,000 8,000 1,400 7
Step-by-step explanation:
I hope u get a tutor if u dont know how to do this I hope this helps
There was 5/8 of pie left in the fridge. Daniel are 1/4 of the leftover pie. How much of pie did he have?
Answer:
he had 1/4 of the pie; there's 3/8 left over. That's also 37.5% of the pie left over. Not sure what you're trying to get.
Step-by-step explanation:
1/4 is also 2/8
What is 14/18 as decimal
Answer:
14/18 = 0.778
Step-by-step explanation:
14 divided by 2 = 7
18 divided by 2 = 9
7/9 is the same as 7 divided by 9
= 0.778
The decimal equivalent of [tex]\( \frac{14}{18} \)[/tex] is approximately 0.777777777777778.
To convert [tex]\( \frac{14}{18} \)[/tex] to a decimal, one divides 14 by 18. This can be done by hand or with a calculator. When dividing 14 by 18, the result is a repeating decimal where the digit 7 repeats indefinitely. This repeating decimal can be represented as 0.777777777777778 when rounded to the nearest 10th decimal place.
Alternatively, one can simplify the fraction [tex]\( \frac{14}{18} \)[/tex] before converting it to a decimal. By dividing both the numerator and the denominator by their greatest common divisor, which is 2, the fraction simplifies to [tex]\( \frac{7}{9} \)[/tex]. When 7 is divided by 9, the result is again the repeating decimal 0.777777777777778.
In summary, [tex]\( \frac{14}{18} \)[/tex] simplifies to [tex]\( \frac{7}{9} \)[/tex] and as a decimal, it is approximately 0.777777777777778.
What is 4/3 - (-3/4)
Answer:
0 I think
Step-by-step explanation:
Answer:
25/12 or 2 1/12
Step-by-step explanation:
4/3 - (-3/4) =
= 4/3 + 3/4
= 16/12 + 9/12
= 25/12
= 2 1/12
can someone help me do this problem please
|2x-4|=22
Answer:
2x-4 = 22
2x = 26
x=13 check |26-4|=22
-(2x-4) = 22
-2x+4 = 22
-2x = 18
x=-9 Check |-18 -4| = |-22| = 22
Answer:
x=13
Step-by-step explanation:
Finding the answer to this is very simple actually. you can actually solve this problem without the || because x has to be a positive value for this to work. 2x-4=22 can be done by adding 4 to both sides and getting the answer 26. Isolate the variable by dividing both sides by 2 to get x=13
let f be a linear function such that f(1)=5 and f(3)=9. Find an equation for f(x)
Answer:
[tex]y = 2x + 3[/tex]
Step-by-step explanation:
First, we can find the slope of the line.
[tex]m = \frac{y1-y2}{x1-x2}\\m=\frac{9-5}{3-1}\\m = \frac{4}{2}=2\\[/tex]
Using the [tex]y = mx + b[/tex] equation, we can solve for b
[tex]9 = 2(3)+b\\9 = 6 + b\\b = 9-6 = 3[/tex]
Let's see if [tex]y = 2x + 3[/tex] works
[tex]2(1) + 3 \\2 + 3 = 5\\\\2(3) + 3\\6 + 3 = 9[/tex]
It checks out!
SOLVE FAST BRAINLIEST ASAP
Y-9=41
Answer:
Y = 50
Step-by-step explanation:
Solve for Y:
Y - 9 = 41
Add 9 to both sides:
Y + (9 - 9) = 9 + 41
9 - 9 = 0:
Y = 41 + 9
41 + 9 = 50:
Answer: Y = 50
Answer:
Y=50
Step-by-step explanation:
First you have to know that whatever you do to one side of the equal sign you must do to the other. Now you want to try and get rid of the 9 so you can separate the variable.
Y-9=41
+9 +9
Y = 50