9514 1404 393
Answer:
lamp: $80end table: $140Step-by-step explanation:
If we let x and y represent the costs of a lamp and end table, respectively, the two purchases can be written as ...
3x +2y = 520
2x -y = 20
__
These equations can be solved many ways. If we use "elimination", we can add twice the second equation to the first to eliminate y:
(3x +2y) +2(2x -y) = (520) +2(20)
7x = 560 . . . . simplify
x = 80 . . . . . . divide by 7
y = 2x -20 = 2(80) -20 = 140
The cost of a lamp is $80; the cost of an end table is $140.
Write the decimal represented by the shaded square.
Answer:
40\100= 4\10=0.4
Answer:
Percentage Form: 40/100 Decimal Form: 0.4 Word Form: 4 tenths
Your grandmother is worried about the heat during the family reunion picnic yesterday between 10 am and noon the temperature rose 6 degrees then between noon and 3pm it rose 4 degrees what was the average rate of increase in temperature between 10am and 3pm
Answer:
Average rate of temperature increase is 2 degrees per hour
Step-by-step explanation:
Here, we want to calculate the average rate of increase in temperature
From what we have above, we can calculate this by dividing the total temperature rise by the number of hours
The total temperature rise is 6 + 4 = 10 degrees
This means that the temperature rose by 10 degrees between 10 am and 3 pm
The number of hours between 10 am and 3 pm is 5 hours
So the average rate of temperature increase is 10 degrees/ 5 hours = 2 degree per hour
Graham graphs the following system of equations to determine its solution.
2x + 4y = 12
2x - y = 2
What is the correct solution?
Enter your answer by filling in the boxes.
(__,__)
ASAP plz
Answer: (2,2)
Step-by-step explanation:
I'm going to use substitution to solve this:
First, I use the second equation to solve for y in terms of x.
2x - y = 2
-y = 2 - 2x
y = 2x - 2
Then, I plug the value for y into the first equation:
2x + 4y = 12
2x + 4(2x - 2) = 12
2x + 8x - 8 = 12
10x - 8 = 12
10x = 20
x = 2
Now that we have x, we can plug it into either equation (I used the first) to get the value for y:
2x + 4y = 12
2(2) + 4y = 12
4 + 4y = 12
4y = 8
y = 2
We get the point (2,2) as a solution.
Note: This is the point where both lines intersect.
After solving the equation, the value of for the points x and y are (2, 2).
What is an equation?Equations are mathematical expressions that have two algebra on either side of an equal (=) sign. The expressions on the left and right are shown to be equal to one another, demonstrating this relationship. L.H.S. = R.H.S. (left-hand side = right side) is a fundamental simple equation.
As per the given equation in the question,
2x + 4y = 12 (i) and
2x - y = 2 (ii)
Solve the value for y,
5y = 10
y = 10/5
y = 2
Substitute y=2 in equation (i)
2x + 4(2) = 12
2x = 12 - 8
x = 4/2
x = 2
Therefore, the point is (2, 2).
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can you simplify this?
[tex] \frac{a {}^{3} }{2} [/tex]
What is the sample space of a single spin of the spinner
Answer:
The sample space of an experiment is the set of all possible outcomes of that experiment.
Answer:
Y, P, R, B (or something like that)
Step-by-step explanation:
just read what the other answer said
I WILL GIVE YOU BRAINLIEST PLEASE HELP!!!! which statement best describes the functions represented in the table?
Answer:
C. Both functions are nonlinear but only function p is exponential.
is the answer 117? or am i wrong
Answer:
Correct
Step-by-step explanation:
You do the equation the same as you would a rectangle.
9 * 13 = 117
Answer:
well you need to do this,(2 times 9)+(2 times 13) =44
Step-by-step explanation:
Oscar has 5 baseballs jerseys , 2 hockey jerseys , 1 basketball jersey and 3 football jerseys . What’s the ratio of hockey jerseys to the total number of jerseys
Answer:
2:9
Step-by-step explanation:
Answer:
2:11
Step-by-step explanation:
There are 2 hockey jerseys and 11 TOTAL. Total is including the hockey jerseys aswell
sammy and two friends rented three life jackets and a sailboat . the life jackets were $3 each and boat was $12 an hour . The total cost was $81 . for how many hours did they rent the sailboat
3 life jackets $3.00= $9.00
1 sailboat $12.00/hr
Total cost = $93.00
93-9= 84
84/12= 7
7 hours
FAKE ANSWERS WILL BE REPORTED
Determine whether the figure has rotational symmetry. If so, describe any rotations that map the ligure onto itself.
look at picture for the figure
please solve this for me
Answer:
the square of -5 is 25 not -25
, -4(1)(-3) is 12 not -12 because when we multiply 2 negative numbers their result is positive
+5 should be written instead of -5
Step-by-step explanation:
+5 should be written instead of -5 as the formula is (-b+-(b²-4ac)½)/2a . since b=-5 ;-b=+5
44. Find the arc length on a circle with radius =5 inches and a central angle of pi/3 help plsss
Answer:
Step-by-step explanation:
Because your angle is in radians, I'm assuming we can use the pre-calculus version of the arc length formula which is
s = rt where s is the arc length, r is radians, and t is the angle in radian measure. Filling in accordingly:
[tex]s=5(\frac{\pi}{3})[/tex] so
[tex]s=\frac{5\pi}{3}[/tex] inches
*last question I need help with* SOLVE FOR X.
PLEASEEE HELP ME ASAP!!!! thank you!! *will give brainliest*
what is 890+987x 78-9080=
Answer:
68796
Step-by-step explanation:
Answer:
76986x − 8190
Step-by-step explanation:
I beg you to help me .
Answer:
16+3=y
y=19
Step-by-step explanation:
PLS HELP ASAPPPp!!! I DONT HAVE TIME I ONLY GOT 5 MINUTES PLS HELP THERES TWO QUESTIONS AHHH IM FREAKING OUT!
Answer:
1) $500
Step-by-step explanation:
It literally says $500 on the table hope this helps :D
For #2, i cant see the full question.
Hope this helps :D Please hit the crown if you want me to help you on the last one then tell me and make a new question !!!!!!!!!!!!
Answer:
500, x times 500 = y
Step-by-step explanation:
Question 1: $500, if you look at the table underneath the section for "one" compute it says 500 in the cost section.
Question 2: X times 500 = Y (since for every "x" (computer) there is $500 "y" (cost))
$4 per pound to cents per ounce
Step-by-step explanation:
4$ is equal to 400 cents, so it would be 400 cents a pound, for every 1 dollar it is the same as 100 cents
Answer:
400
Step-by-step explanation:
What is the y-intercept of the graph?
Answer:
1
intercepts on the y line
Carlton has a job offer for a position as a telemarketer. The job pays $60 per week, plus a
$15 commission for each sale he makes. How many sales would Carlton have to make in
a week in order to earn $240?
Answer:
He would have to make 12 sales a week in order to make $240
Step-by-step explanation:
So every week the job pays him $60
And $15 more every sell he makes So 15x12=180
So if he makes 12 sells in a week he will make $180 dollars.
Plus the 60 the job pays him every week
So 180+60=$240
What’s the equation?
Write a function in any form that would match the graph shown below. please help :)
Answer:
0, -4
2,0
-4,0
-2,-8
Step-by-step explanation:
I chose the points that were most visable
Find the slope of the line through each pair of points.
6. *
(4, 10), (0, 3)
Answer:
Slope: 1.75
Step-by-step explanation:
Slope = (3-10) / (0-4)
= -7 / -4
= 1.75
i need the slope intercept for this equation
Answer:
y = -2/3x + 8
Step-by-step explanation:
Evaluate expression using the order of operations. 17 − 5 ⋅ 4 ÷ 2
Answer:
7
Step-by-step explanation:
5x4=20
20/2=10
17-10=7
Answer:
your answer is 7
Step-by-step explanation:
17-5×4÷2
P- parenthesis
E- Exponents
M- Multiplication
D- Divide
A- Add
S- Subtract
Can I actually get help and not people saying random stuff just for points????
What is the radian measure of an angle equal to 225 degrees????
Answer:
225° = 5π/4 radians.
Step-by-step explanation:
hope this helps :D
The radian measure of an angle of 225 degrees is 1.25π radian or 3.925 radians.
Given,
225 degrees.
We need to find the radian measure of 225 degrees.
What is the radian measure of an angle?
We have,
π radian = 180 degree
So,
2π = 360 degrees.
This is the formula for the radian of an angle.
Find the radian measure for 225 degrees.
We have,
π radian = 180 degrees
Multiply 225/180 on both sides by 180.
225/180 x π radian = 225/180 x 180 degrees
1.25 π radian = 225 degrees
or
We can take π = 22/7 = 3.14
225/180 x 3.14 radian = 225 degrees.
3.925 radian = 225 degrees
Thus the radian measure of an angle of 225 degrees is 1.25π radian or 3.925 radians.
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Omar says that 4a times 4a will get 16a. Explain his mistake.
Answer:
You have to multiply be A before each other
Step-by-step explanation:
Find the coordinates of the orthocenter of a triangle with vertices at each set of points on a coordinate plane. a. (0,0), (16,4), (4,6) b. (3,4), (11,12), (8,15)
Answer:
The answer is below
Step-by-step explanation:
a) The equation of a line passing through the point (0,0) and (16,4) is given by:
[tex]y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)\\\\y-0=\frac{4-0}{16-4}(x-0)\\\\y=\frac{1}{4}x[/tex]
We have to find the equation of the line perpendicular to y = (1/4)x and passing through the point (4,6).
The line perpendicular to y = (1/4)x has a slope of -4 (product of their slope = -1).
Hence:
[tex]y- y_1=m(x-x_1)\\\\y-6=-4(x-4)\\\\y-6=-4x+16\\\\y=-4x+22[/tex]
The slope of a line passing through the point (16,4) and (4,6) is given by:
[tex]m=\frac{y_2-y_1}{x_2-x_1}\\\\m=\frac{6-4}{4-16}=-\frac{1}{6}[/tex]
We have to find the equation of the line perpendicular to the line with slope of -1/6 and passing through the point (0,0).
The line perpendicular to a line with slope -1/6 has a slope of 6
Hence:
[tex]y- y_1=m(x-x_1)\\\\y-0=6(x-0)\\\\y=6x[/tex]
Solving y = 6x and y = -4x + 22, gives:
x = 2.2, y = 13.2
Hence the orthocenter is at (2.2, 13.2)
b)
The slope of a line passing through the point (3,4) and (11,12) is given by:
[tex]m=\frac{y_2-y_1}{x_2-x_1}\\\\m=\frac{12-4}{11-3}=1[/tex]
We have to find the equation of the line perpendicular to the line with slope of 1 and passing through the point (8,15).
The line perpendicular to a line with slope 1 has a slope of -1
Hence:
[tex]y- y_1=m(x-x_1)\\\\y-15=-1(x-8)\\\\y=-x+8+15\\\\y=-x+23[/tex]
The slope of a line passing through the point (11,12) and (8,15) is given by:
[tex]m=\frac{y_2-y_1}{x_2-x_1}\\\\m=\frac{15-12}{8-11}=-1[/tex]
We have to find the equation of the line perpendicular to the line with slope of -1 and passing through the point (3,4).
The line perpendicular to a line with slope -1 has a slope of 1
Hence:
[tex]y- y_1=m(x-x_1)\\\\y-4=1(x-3)\\\\y=x-3+4\\\\y=x+1[/tex]
Solving y = -x + 23 and y = x + 1, gives:
x = 11, y = 12
Hence the orthocenter is at (11, 12)
Please solve this problem if u are brainliest
Answer:
Step-by-step explanation:
2. 3x-1/3 = 5
+1/3 +1/3
___________-
3x= 5 1/3
÷3 ÷3
__________________
x=1.77777777778
5. 3x-9=5x-3
+3 +3
_____________-
3x-6=5x
-3x -3x
_______________-
-6=2x
÷2 ÷2
______________-
-3=x
8. 3x-2x=8 ( I crossed multiplied btw)
x=8
Hope this helps ∞<3
Santa's sleigh is powered by units of Christmas spirit. If 9/10 people show Christmas spirit Santa's sleigh will deliver all packages. If there are 13,000,000 people in Pennsylvania, how many people would have to show Christmas spirit for packages to be delivered in PA? Make sure to put commas in your answer and use a calculator if you need to. * 2 points
Answer: 11,700,000
Step-by-step explanation:
Number of people in Pennsylvania =13,000,000
Fraction of people that will show Christmas spirit for Santa's sleigh to deliver all packages = 9/10
The number of people that would have to show Christmas spirit for packages to be delivered in PA will be:
= 9/10 × 13,000,000
= 11,700,000
