Answers
Answer:
c
Step-by-step explanation:
Step 1
Solve 3x-y=-63x−y=−6 for yy.
y=6+3xy=6+3x
Step 2
Substitute 6+3x6+3x for yy in the second and third equation.
2\left(6+3x\right)-5z=-52(6+3x)−5z=−5 x-\left(6+3x\right)-2z=-4x−(6+3x)−2z=−4
Step 3
Solve these equations for xx and zz respectively.
x=-\frac{17}{6}+\frac{5}{6}zx=−
6
17
+
6
5
z z=-1-xz=−1−x
Step 4
Substitute -\frac{17}{6}+\frac{5}{6}z−
6
17
+
6
5
z for xx in the equation z=-1-xz=−1−x.
z=-1-\left(-\frac{17}{6}+\frac{5}{6}z\right)z=−1−(−
6
17
+
6
5
z)
Step 5
Solve z=-1-\left(-\frac{17}{6}+\frac{5}{6}z\right)z=−1−(−
6
17
+
6
5
z) for zz.
z=1z=1
Step 6
Substitute 11 for zz in the equation x=-\frac{17}{6}+\frac{5}{6}zx=−
6
17
+
6
5
z.
x=-\frac{17}{6}+\frac{5}{6}\times 1x=−
6
17
+
6
5
×1
Step 7
Calculate xx from x=-\frac{17}{6}+\frac{5}{6}\times 1x=−
6
17
+
6
5
×1.
x=-2x=−2
Step 8
Substitute -2−2 for xx in the equation y=6+3xy=6+3x.
y=6+3\left(-2\right)y=6+3(−2)
Step 9
Calculate yy from y=6+3\left(-2\right)y=6+3(−2).
y=0y=0
Step 10
The system is now solved.
x=-2x=−2 y=0y=0 z=1z=1
Solution
x=-2x=−2
y=0y=0
z=1z=1
Related Questions
Graph x = 4 help please!!! :(
Answers
Answer:
x = 4 would be a vertical line along with the value x=4
Step-by-step explanation:
The line of x=4 represents all values with the x value 4 so any value with (4,y) would be on the line x = 4 so if plot (4,0), (4,1), (4,2). It will form a vertical line at x=4.
help will mark Brainliest!!
Answers
Answer:
Subtract 4 from 17, then divide by 3.
Step-by-step explanation:
hope this helps =)
The two formats used in an observation checklist are:
A. Performance profiles and Tallies
B. Tallies and video recording
C. Video recording and audio recording
D. Performance profiles and SMART Targets
Answers
The two formats used in an observation checklist are: D. Performance profiles and SMART Targets.
What is observation checklist?Observation checklist can be defined as the process of observing and evaluating a person or group of people performance.
When carrying out an observation checklist endeavors to make sure that the checklists are dated.
Observation checklist includes Performance profiles and SMART Targets. Where SMART stands for:
S=Specific
M=Measurable
A=Achievable
R=Relevant
T= Time-Bound
Therefore the correct option is D.
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HELP PLS
The function of F is defined by f(x)=x+2
find F(n-4)
Answers
Answer:
Step-by-step explanation:
f(n - 4)= n - 4 + 2 = n - 2
What is the area of this figure?
Please help
Answers
Area of centre rectangle
(8+6+2)(7)(16)(7)112mm²Area of right rectangle
6(3)18mm²Area of triangle
1/2(16-12)(8)4(4)16mm²Total
16+18+112146mm²Given the function = f(x) = 2x - 5, solve f(x) = 7.
Answers
Answer:
f(7) = 9
Step-by-step explanation:
f(x) = 2x - 5, solve f(x) = 7.
f(7) = 2(7) -5
f(7) = 9
What is the probability of picking a pink marble and rolling an even number?
Write your answer as a fraction or a whole number. With fractions, use a slash ( / ) to separate the numerator and denominator.
Answers
Answer:
[tex]\frac{6}{14}[/tex]
Step-by-step explanation:
P(A and B) = P(A) × P(B)
~~~~~~~~
P(A) = [tex]\frac{6}{7}[/tex]
P(B) = [tex]\frac{3}{6}[/tex] = [tex]\frac{1}{2}[/tex]
P(A and B) = [tex]\frac{6}{7}[/tex] × [tex]\frac{1}{2}[/tex] = [tex]\frac{6}{14}[/tex]
URGENT PLEASE HELP!!
Write the equation of the given line in slope-intercept form:
Answers
Answer:
y = -3x - 1
Step-by-step explanation:
The slope intercepts the y-axis at -1, and moves down 3 on the y for every one space right on the x-axis
write two equations that when graphed look like this *see image*. please help its due soon and i will give ya 75 points for answering, thanks, 5 stars, and brainlist.
Answers
The graph is showing the equation of circle x²+y²=4
What is a circle?A circle is a two-dimensional geometry on the plane having a centre point and the circular line is drawn equidistant from the centre point.
The given graph in the question represents the equation of the circle cutting the points on the x-axis and y-axis at 4 which is the radius of the circle.
The equation will be as follows:-
x²+y²=4
Hence the graph is showing the equation of circle x²+y²=4
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You have a jar of marbles in front of you with the following colors: 12 are red, 17 are blue, 8 are yellow, and 13 are white. Suppose you had a larger jar of 250 marbles with the same ratio of colors. What is the probability of selecting either a red or white marble from the larger jar?
Answers
Answer: 12+17+8+13=50, meaning that if we wanted to scale the amount of marbles to 250, we would need to multiply by 5.
So, if we multiply each amount of marbles times 5, that would give us:
60 red marbles
85 blue marbles
40 yellow marbles
65 white marbles
now, the probability of selecting a red or white marble from the jar of 250 marbles, you would need to add together the amount of white and red marbles, and divide that by 250.
60 + 65= 125 / 250
Wwe could stop there if the question wants the answer in fractions, and just simplify, but if it needs the answer in a percentage, then you would still divide 125 by 250.
125/250=0.5
0.5 is equal to 50%
(If the fraction needs to be simplified it would be 5/10, which is also 1/2.)
The original price of the bedroom set is 2850. Since they are opening a credit card, they receive 15% off. What is the new price of the bedroom set
Answers
Answer:
$2,422.50
Step-by-step explanation:
$2,850- 15% (427.5)= 2422.5
You could also multiply $2850 * 0.85= $2,422.5
‼️ See Picture ‼️Select the reason that best supports Statement 5 in the given proof.
Answers
The reason that best supports statement 5 is: B. multiplication property of equality.
What is the Multiplication Property of Equality?When you multiply both sides of an equation by the same quantity, you have applied the multiplication property of equality.
In statement 5, both sides of the equation was multiplied by 2. Therefore, the best reason is: B. Multiplication Property of Equality.
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Consider the line 9x+8y=-2.
Find the equation of the line that is parallel to this line and passes through the point (-3, 2).
Find the equation of the line that is perpendicular to this line and passes through the point (-3, 2).
Equation of parallel line:
Equation of perpendicular line:
Answers
Considering the definition of parallel and perpendicular line:
the equation of parallel line is y= -[tex]\frac{9}{8}[/tex]x - [tex]\frac{11}{8}[/tex].the equation of of perpendicular line is y= [tex]\frac{8}{9}[/tex]x + [tex]\frac{14}{3}[/tex].Linear equationA linear equation o line can be expressed in the form y = mx + b.
where
x and y are coordinates of a point.m is the slope.b is the ordinate to the origin and represents the coordinate of the point where the line crosses the y axis.Parallel lineParallel lines are two lines that are always at the same distance from each other and that prolonged towards infinity never touch.
Two lines are parallel if they have the same slope and different y-intercepts. That is, they have the same value of m and different value of b.
Perpendicular linePerpendicular lines are lines that intersect at right angles or 90° angles. If you multiply the slopes of two perpendicular lines, you get –1.
Equation of parallel line in this caseIn this case, the line is 9x+8y=-2. Expressed in the form y = mx + b, you get:
8y= -2 - 9x
y= (-9x -2)÷ 8
y= -[tex]\frac{9}{8}[/tex]x - [tex]\frac{1}{4}[/tex]
Two lines are parallel if they have the same slope. So, in this case, the parallel line has a slope of -[tex]\frac{9}{8}[/tex] and has a form of: y= -[tex]\frac{9}{8}[/tex]x + b
The line passes through the point (-3, 2). Replacing in the expression for parallel line:
2= -[tex]\frac{9}{8}[/tex]× (-3) + b
2= [tex]\frac{27}{8}[/tex] + b
2- [tex]\frac{27}{8}[/tex]= b
- [tex]\frac{11}{8}[/tex]= b
Finally, the equation of parallel line is y= -[tex]\frac{9}{8}[/tex]x - [tex]\frac{11}{8}[/tex].
Equation of perpendicular line in this caseThe line is y= -[tex]\frac{9}{8}[/tex]x - [tex]\frac{1}{4}[/tex].
If you multiply the slopes of two perpendicular lines, you get –1. In this case, the line has a slope of -[tex]\frac{9}{8}[/tex]. So:
-[tex]\frac{9}{8}[/tex]× slope perpendicular line= -1
slope perpendicular line= (-1)÷ (-[tex]\frac{9}{8}[/tex])
slope perpendicular line= [tex]\frac{8}{9}[/tex]
So, the perpendicular line has a form of: y= [tex]\frac{8}{9}[/tex]x + b
The line passes through the point (-3, 2). Replacing in the expression for parallel line:
2= [tex]\frac{8}{9}[/tex]× (-3) + b
2= -[tex]\frac{8}{3}[/tex] + b
2+ [tex]\frac{8}{3}[/tex]= b
[tex]\frac{14}{3}[/tex]= b
Finally, the equation of of perpendicular line is y= [tex]\frac{8}{9}[/tex]x + [tex]\frac{14}{3}[/tex].
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Yuna grows two varieties of pears—Bosc and Anjou. She took a sample of each variety to test if their average caloric contents were significantly different. Here is a summary of her results:
Calories
Variety nnn Mean StDev SE mean
Bosc 656565 120120120 151515 1.861.861, point, 86
Anjou 656565 116116116 131313 1.611.611, point, 61
99\% \text{ CI for } \mu_\text{B} - \mu_{\text{A}}\text{:}99% CI for μ
B
−μ
A
:99, percent, start text, space, C, I, space, f, o, r, space, end text, mu, start subscript, start text, B, end text, end subscript, minus, mu, start subscript, start text, A, end text, end subscript, start text, colon, end text 4 \pm 6.444±6.444, plus minus, 6, point, 44
Yuna wants to use these results to test \text{H}_0\text{: }\mu_\text{B}=\mu_\text{A}H
0
: μ
B
=μ
A
start text, H, end text, start subscript, 0, end subscript, start text, colon, space, end text, mu, start subscript, start text, B, end text, end subscript, equals, mu, start subscript, start text, A, end text, end subscript versus \text{H}_\text{a}\text{: }\mu_\text{B} \neq \mu_\text{A}H
a
: μ
B
=μ
A
start text, H, end text, start subscript, start text, a, end text, end subscript, start text, colon, space, end text, mu, start subscript, start text, B, end text, end subscript, does not equal, mu, start subscript, start text, A, end text, end subscript. Assume that all conditions for inference have been met.
Based on the interval, what do we know about the corresponding P-value and conclusion at the \alpha=0.01α=0.01alpha, equals, 0, point, 01 level of significance?
Answers
Answer:
The P-value is greater than α=0.01 and she cannot conclude that there is a difference between the means.
Step-by-step explanation:
did the khan assignment
Which of the following figures has a circumference that is closest to 121 inches?
A
a circle with a diameter of 38.5 inches
B
a circle with a diameter of 19.3 inches
C
a circle with a radius of 38.5 inches
D
a circle with a radius of 6.2 inches
Answers
Answer:
A.
Step-by-step explanation:
C = 2πr = πd
A. C = π(38.5 in.) = 120.95 in.
First guess: Answer: A.
16 km
12 km
What is the length of the hypotenuse? If necessary, round to the nearest tenth.
С
kilometers
Answers
Step-by-Step Explanation:
three times the sum of x and y is increased by 5
Answers
Answer:
Here is the answer .Please mark as brainliest plshope its help you
Step-by-step explanation:
3(x+y)+5=0
3x+3y+5=0
or,3x+3y= -5
Answer:
3*(x+y) + 5
Step-by-step explanation:
This is an mathematical expression....it isi NOT an equation...the question does NOT say this is equal to zero (or anything else)
it is this 3 (x+y) + 5 or 3x + 3y + 5
If ( x - y ) = 2 and xy = 3 find the value of...
[tex] {x}^{3} + {y}^{3} [/tex]........
Answers
Answer: 4:7
Step-by-step explanation:
Answer:
28
Step-by-step explanation:
Given :
x - y = 2xy = 3Solving :
2 values which satisfy the given conditions are x = 3 and y = 1Evaluating the expression :
x³ + y³(3)³ + (1)³27 + 128What is the value of 3(a-9) when a =6
Answers
Answer:
-9
Step-by-step explanation:
We are given the value of "a", which is 6. Let us substitute the value of "a" into the expression to determine a numerical value of 3(a - 9).
⇒ 3(a - 9)⇒ 3[(6) - 9] . . . . . . . . {a = 6}Open the parentheses to simplify the expression inside the long brackets [ ].
⇒ 3[(6) - 9] . . . . . . . . {a = 6}⇒ 3[6 - 9]Subtract the expression inside the long brackets [ ]
⇒ 3[6 - 9]⇒ 3[-3]Finally, simplify the product of 3 and -3.
⇒ 3[-3] ⇒ 3 × -3 = -9Therefore, -9 is the value of 3(a - 9) when a = 6.
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[tex]\huge\text{Hey there!}[/tex]
[tex]\mathsf{3(a - 9)}\\\\\mathsf{= 3(\bold{6} - 9)}\\\\\mathsf{= 3(6) + 3(-9)}\\\\\mathsf{= 18 - 27}\\\\\large\text{OR EVEN \rm{3(-3)}}\\\\\mathsf{= 3(-3)}\\\\\mathsf{= -9}\\\\\\\\\huge\text{Therefore, the answer is: \boxed{\mathsf{-9}}}\huge\checkmark[/tex]
[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
Tanisha's website had x visitors on Friday. On Saturday, it had 500 more visitors than it did on Friday. The total
number of visitors on Friday and
Saturday was twice the number on Sunday. In terms of x, how many visitors did Tanisha's website have on
Sunday?
Answers
If the number of visitors on Friday, Saturday, and Sunday is x, x + 500, and x + 250. Then the total number of visitors will be 3x + 750.
What is Algebra?Algebra is the study of mathematical symbols, and the rule is the manipulation of those symbols.
Tanisha's website had x visitors on Friday.
On Saturday, it had 500 more visitors than it did on Friday. That is x + 500
The total number of visitors on Friday and Saturday was twice the number on Sunday. That is (2x + 500)/2
Then the total number of the visitors will be
→ Friday + Saturday + Sunday
Then we have
[tex]\rm \rightarrow x + x + 500 + \dfrac{2x + 500}{2}\\\\\rightarrow 2x + 500 + x + 250\\\\\rightarrow 3x + 750[/tex]
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Write the equation of the line that passes through the points (4,-5)(4,−5) and (4,-7)(4,−7). Put your answer in fully simplified point-slope form, unless it is a vertical or horizontal line.
Answers
well, it's a vertical line, so, Check the picture below.
What is the value of x in the equation 1/5x - 2/3y = 30, when y = 15?
A. 4
B. 8
C. 80
D. 200
Answers
200
Step-by-step explanation:
1/5x -2/3y =30
Plug in 15 for y.
x-(15)= 30
2/3x of 2/3(15) is 10.
1/5x -10-30
Add 10 to each side.
1/5x = 40
Divide each side by 1/5.
(dividing by a fraction is the same as multiplying by its reciprocal...flip 1/5...*5)
x=200
Urgent help,
Translate the following words into equations step 2 solve the equation.
8 more than a number is equal to 15
The product of 7 and a number is 35
Answers
Answer:
x+8=15
-8. -8
x=7
7x=35
7. 7
x=5
Find the area of the figure. Round to the nearest hundredth where necessary.
24 m
28 m
Answers
[tex]\bold{ANSWER:}[/tex]
629.94 m^2
[tex]\bold{SOLUTION:}[/tex]
Write and solve an equation to find the measure of angle X.
Answers
Answer:
x = 43°
Step-by-step explanation:
In order to find the measure of angle x we'll use Vertical Angles Theorem.
x = 180° - (90 + 47)x = 180° - 137x = 43°Therefore, the measure of angle x is 43° ✓.
«•••••••••••••••••»
solve for h
A=7h
thank you
Answers
Answer:
The equation of the circle with the origin as centre and passing through the point A(-2;4)
A nickel is selected at random out of a bag containing 15 pennies, 10 nickels, and 15 dimes. What is the probability of the complement of the event? Express your answer as a fraction in simplest form.
Answers
The probability of the complement of the event is 3/4 if the nickel is selected at random out of a bag containing 15 pennies, 10 nickels, and 15 dimes.
What is probability?It is defined as the ratio of the number of favourable outcomes to the total number of outcomes, in other words, the probability is the number that shows the happening of the event.
Total number of contains in the bag = 15+10+15 = 40
Total number of nickel = 10
The probability of getting the nickel = 10/40 = 1/4
The complement of the probability:
P' = 1 – 1/4
P' = 3/4
Thus, the probability of the complement of the event is 3/4 if the nickel is selected at random out of a bag containing 15 pennies, 10 nickels, and 15 dimes.
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Choose an image (2, 3, or 4) and answer the questions.
a. How does this image change from the previous image?
Answers
The camera cost $540 if the sales tax is 7.2% what is the tax change and the total cost?
Answers
Answer:
$75 ?
Step-by-step explanation:
If this is wrong super sorry :)
Find the solution(s) to the system of equations represented in the graph. (2,0) (0,-2)
Answers
the solution to a system of equation is the point where they intersect. This occurs at (0, -2) and (2, 0).
