Answer:
x = 6 , y = -4
Step-by-step explanation:
Solve the following system:
{-9 y - 3 x = 18 | (equation 1)
3 y + 4 x = 12 | (equation 2)
Swap equation 1 with equation 2:
{4 x + 3 y = 12 | (equation 1)
-(3 x) - 9 y = 18 | (equation 2)
Add 3/4 × (equation 1) to equation 2:
{4 x + 3 y = 12 | (equation 1)
0 x - (27 y)/4 = 27 | (equation 2)
Multiply equation 2 by 4/27:
{4 x + 3 y = 12 | (equation 1)
0 x - y = 4 | (equation 2)
Multiply equation 2 by -1:
{4 x + 3 y = 12 | (equation 1)
0 x+y = -4 | (equation 2)
Subtract 3 × (equation 2) from equation 1:
{4 x+0 y = 24 | (equation 1)
0 x+y = -4 | (equation 2)
Divide equation 1 by 4:
{x+0 y = 6 | (equation 1)
0 x+y = -4 | (equation 2)
Collect results:
Answer: {x = 6 , y = -4
The table below represents the number of hours a student worked and the amount of money the student earned. What is the initial amount this student is paid? (Base pay, when number of hours, h = 0) I’LL PAY YOU 30 DOLLARS IN CASHAPP RIGHT NOW WHEN YOU DO IT!
The initial amount this student is paid is 0 and this can be determined by using the two-point slope form of the line.
Given :
The given table represents the number of hours a student worked and the amount of money the student earned.
The following steps can be used in order to determine the initial amount this student is paid:
Step 1 - The two-point form of the line can be used in order to determine the initial amount this student is paid.
Step 2 - So, the linear equation that represents the given situation is:
[tex]\rm \dfrac{d-50}{h-8}=\dfrac{93.75-50}{15-8}[/tex]
Step 3 - Simplify the above expression.
[tex]\rm \dfrac{d-50}{h-8}=6.25[/tex]
d - 50 = 6.25h - 50
d = 6.25h
Step 4 - Now, substitute the value of (h = 0) in the above expression.
d = 0
Therefore, the correct option is D) There is no base pay.
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ASAP PLEASE HELP IM TIMED WILL MARK BRAINLIEST
Letr stand for "O > 2" and s for "2<5'. What is the truth value for r ^ s? Why?
A)
True; the truth value of s is true.
B)
False; the truth value of r is false.
C)
False; the truth value of s is false.
D)
The truth value cannot be determined because the statements are a
contradiction.
Answer: im sorry that nobody got to you, im having the same problem right now
Step-by-step explanation:
Answer: FALSE
Step-by-step explanation:
x ∧ y is true only when x and y are both true
So, since r and s are both false, r ∧ s is also false.
Therefore, s ∧ (r ∧ s) is false since r ∧ s is false.
long division method hcf of 430,516 and 817
Answer:
you need to add up 430,516 x 817 and see what it gives you for my exclusive seen 1247.516
Step-by-step explanation:
Someone help me please ASAP
Answer:
3. 45, 4. 24
Step-by-step explanation:
use formula: hypotenuse²= side² + other side ²
3.
x²= 27²+36² calculate the squares then add
x²=2025 square root both sides
x= √2025= 45
4.
25²= x²+7² isolate the vaiable by subtracting 7² from both sides
25²-7² = x² square then subtract
576 =x² square root both sides
24=x
Classify the following triangle. Check all that apply.
O A. Obtuse
B. Equilateral
c. Right
D. Acute
O E. Scalene
OF. Isosceles
Answer:
This is an Equilateral Acute triangle.
Does anyone know this
Answer:
2.5
Step-by-step explanation:
2.5
Answer:
2.5s
Step-by-step explanation:
Time = [tex]\frac{Distance}{Speed} =\frac{5 meters}{2m/s} =2.5s[/tex]
34. What is the smallest subset containing 100 ?
A. Irrational Numbers
B. Whole Numbers
C. Natural Numbers
D. Rational Numbers
Shoe Size and Height the shoe sizes and heights (in in.) for 12 men.
Shoe
7.5 8
8 18 19 19 9 10 10 10 11 12
Size, X
Height,
61 63.5 62.5 65 65 67 65.5 64.5 66.5 67 68 65.5
У
Based on this Linear Regression Line, how tall would a man be, who wore size 13
shoes?
64.29 in
(1 65.29
K 66.79
68.79
Answer:
68.79
Step-by-step explanation:
I used a graphing calculator to ender the points then used the linear regression line option to finf the line of best fit. Im not sur ehow to do it with an equation.
Draw a line through the point (−2,−2) with a slope of 1/4. Draw a line through the point (2, 0) with a slope of 1/4
Answer:
Step-by-step explanation:
The standard equation of a line in point-slope form is expressed as;
y-y0 = m(x-x0) where:
m is the slope
b is the y-intercept.
Given the following
Slope = 1/4
(x0, y0) = (-2, -2)
The equation becomes;
y-(-2) = 1/2(x-(-2))
y+2 = 1/2(x+2)
2(y+2) = x+2
2y+4 = x+ 2
2y-x = 2-4
2y-x = -2
For the line through the point (2, 0) with a slope of 1/4
y - 0 = 1/4(x-2)
y = 1/4(x-2)
4y = x- 2
4y - x = -2
Find the plotted lines below:
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Help!!! 100 POINTS
Examine the number line and select all the statements that are true.
The sum of a and 0 is positive.
The product of a and c is negative.
The quotient of b and a is positive.
The sum of a and b is positive.
The quotient of c and 0 is undefined.
b < a
Answer:
the product of a and c is negitive
Step-by-step explanation:
Answer:
The second one is true
The third one is true
The fourth one is false
The fifth one is true
The sixth one is false
Which of the following graphs could be the graph of the function f(x)=.03x2(x2-25)
Answer:were are the graphs
Step-by-step explanation:
Which sets of values belongs to the domain and range of a relation
full answer:
As we know that
The domain of a relation is defined as the set of all possible independent values the relation can really take - basically the group of all possible inputs.
The range of a relation is defined as the set of all possible dependent values the relation can generate from the domain values - basically the group of all possible outputs.
As
The domain is the set of independent values, meaning the set of x-coordinates of the ordered pairs as x is an independent variable.
The range is set of dependent values, meaning the set of y-coordinates of the ordered pairs as y is an independent variable.
So, in the set of ordered pairs of a relation
A student's work to solve an equation is shown.
9514 1404 393
Answer:
incorrectlyone solutionStep-by-step explanation:
The third line of the solution is incorrect. It should be ...
5x +2 = -5x +2
Then the one solution can be found:
10x = 0 . . . . . . . . . add 5x-2 to both sides
x = 0
Is 0.23 a rational number? Choose the best explanation.
Answer:
yes because it can be written as 23/100
Step-by-step explanation:
I did this before and I have gotten it correct.
triangle ABC is being dilated with center of dialation at the origin. The image of c, point C', has coordinates of (7.2, 3.6). What is the scale factor of the dilation and what are the coordinates of point A'?
Answer:
4
Step-by-step explanation:
Coordinates of the image point A' will be (-3.6, 3.6).
Rules for the transformation:If a point (h, k) is dilated by scale factor 'a' about the origin, coordinates of the image point point C' will be → (ah, ak)If a point C(6, 3) is dilated by a scale factor 'a', coordinates of the image point C' will be → (6a, 3a)From the graph attached, image point of C(6, 3) is C'(7.2, 3.6)
By the rule of transformation → (6a, 3a) = (7.2, 3.6)
6a = 7.2 ⇒ a = 1.2
Coordinates of point A → (-3, 3)
If the point A is dilated by a scale factor 1.2 about the origin,
Coordinates of the image point A' will be → A'(-3×1.2, 3×1.2)
→ A'(-3.6, 3.6)
Find out more information about the transformation here,
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PLEASE HELP! I REALLY NEED HELP WITH THIS!! I WILL MARK BRAINLIEST!!!
All of the following expressions are equivalent to 12w + 6, except:
-1(12w - 6)
(3 + 6w)2
6(1 + 2w)
-1(-12w - 6)
Answer:
2nd one
Step-by-step explanation:
Expand: -3(x – y + 5)
Answer:
-3x+3y-15
Step-by-step explanation:
;)
Answer:
-3x+3y-15
Step-by-step explanation:
-3*x= -3x
-3*-y= 3y
-3*5= -15
Robinson Crusoe is an adventure novel about one man's seafaring adventures that change who he is and how perceives the world. Describe a significant event in your life that made you stop and think about your own destiny or approach to life.
What is the solution to the equation 3(2x+5) = 3x+4x?
O x 0
O X-4
O X-5
O X-15
Sa
Mark this and return
Answer:
15
Explanation:
Answer: 15
Step-by-step explanation:
On edg2020
Dierdre’s work to solve a math problem is shown below.
Problem: How many 1 and one-half-foot pieces can be cut from a 12-foot length of ribbon?
Step 1:
1 and one-half divided by 12 = n
Step 2:
Three-halves divided by 12 = n
Step 3:
Three-halves times StartFraction 1 Over 12 EndFraction = n
Step 4:
StartFraction 3 Over 24 EndFraction = n
Answer:
One-eighth = n
What was Dierdre’s first error?
She switched the divisor and the dividend in step 1 when creating an equation to model the problem.
She used an improper fraction in step 2 that is not equivalent to 1 and one-half.
She replaced the divisor by its reciprocal in step 3 instead of replacing the dividend by its reciprocal.
She reduced the fraction in step 4 incorrectly.
Step-by-step explanation:
step 1
Answer:
Step 1)-She switched the divisor and the dividend in step 1 when creating an equation to model the problem.
Step-by-step explanation:
I got it right on my unit test :>
Convert − 6 7to a decimal. Go out 3 decimal places and round as appropriate.
Answer:
-0.85714285714
Rounded answer:
-0.86
Step-by-step explanation:
Azel has 10 apples and Emily has 5 apples
Where does emily live?
A. Port geese 2546
B. In Atlanta
C. Nowhere
D. All the above
Answer: I think all of the above
Step-by-step explanation:maybe there traveling so…
Two lines, A and B, are graphed (Look at the picture):
Determine the solution and the reasoning that justifies the solution to the systems of equations.
a.(−4, 6), because both the equations are true for this point
b.(2, 8), because the graph of the two equations intersects at this point
c.(2, 8), because neither of the two equations is true for this coordinate point
d.(−4, 6), because the graph of the two equations intersects the axis at these points
Answer:
B. (2,8), because both equations intersect at this point
Answer:
B. (2,8), because both equations intersect at this point
Step-by-step explanation:
Why is it answer B? Because of Enlarging the graph, we find that the intersection of the two lines drawn is at point (2,8). Hence, the solution of the equation is (2,8) because the graphs of the two lines intersect at this point.
Peyton's car used 6 gallons to travel 192 miles. How many gallons of gas would she need to travel 480 miles?
Answer:16
Step-by-step explanation:
Answer:15
Step-by-step explanation:
900 students attend Ridgewood Junior High School. 5% of students bring their lunch to school everyday. How many students brought their lunch to school on Thursday?
Answer:
180 students brought their lunch to school on Thursday
Step-by-step explanation:
We are told that out of 900, 5% of the students brought their lunch to school everyday
So the number that brought their lunch on Thursday will be;
5% of 900
= 5/100 * 900 = 180
3.3g+4=1.3g+8 helppp pls
Answer: 2
Step-by-step explanation:
3.3 x 2 = 6.6
6.6 + 4 = 10.6
1.3 x 2 = 2.6
2.6 + 8 = 10.6
The speed of sound in hydrogen is about 3.9 times its speed in air. If its speed in
hydrogen is almost 1287 m/s, what is its speed in air?
Answer:
330
Step-by-step explanation:
Answer:
330 m/s
Step-by-step explanation:
Divide 1287 m/s by 3.9 to get the speed of sound in air as given that the speed of sound in hydrogen is 3.9 times it's speed in hydrogen.
Hope this makes sense.
Good luck!!
Which statement must be true about line TU?
Line TU is parallel to line RS.
Line TU is perpendicular to line RS.
Line TU has no slope.
Line TU has a slope of –5.
Answer:
line TU is parallel to line RS
Step-by-step explanation:
edg2020
Answer: line TU is parallel to line RS
Step-by-step explanation:
A lotion is made from an oil blend costing $1.50 per ounce and glycerin costing $1.00 per ounce. Four ounces of lotion costs $5.50.
A table titled Lotion, showing Ounces, Cost per Ounce, and Total. The first row shows, Oil Blend, and has 4 minus g, 1.50, and x. The second row shows Glycerin, and has g, 1.00, and blank. The third row shows, Mixture, and has 4, blank, and 5.50.
Answer:
(4 – g) 1.5
Step-by-step explanation:
Trust
Answer:
(4 – g) 1.5
Step-by-step explanation:
Joey completed 3,556 push ups over a 4-week period (there are 7 days in a week). Joey did the same number of push-ups every day. How many push-ups did Joey do each day
Answer:
127 per day
Step-by-step explanation:
Total pushups in 4 weeks = 3,556
4-week period( 7 days a week) = 4 × 7
= 28 days
How many push-ups did Joey do each day?
Push ups per day = Total push ups / Total number of days
= 3,556 / 28
= 127
Push ups per day = 127
Joey did 127 push-ups each day for a 4-week period( 7 days a week)
