Answer:
$30
Step-by-step explanation:
d + s= 86.50----------1
d - 25.50 = s
d - s=25.50------------2
1 - 2
(d-d) +(s-(-s))=86.50-25.50
2s=60
s=60/2=$30
The cost of a stool is $30.5 if the total cost of a desk and a stool is $86.50 and the stool costs $25.50 less than the desk.
What is a linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
It is given that:
The total cost of a desk and a stool is $86.50.
The stool costs $25.50 less than the desk.
Let the cost of the desk is $d
Let the cost of the stool is $s
d + s = 86.50
s = d - 25.50
The above two equations represent two linear equations in two variables.
By solving by substitution method:
Plug s = d - 25.50 in the first equation
d + d - 25.50 = 86.50
2d = 86.50 + 25.50
2d = 112
d = 112/2
d = $56
s = 86.50 - 56
s = $30.5
Thus, the cost of a stool is $30.5 if the total cost of a desk and a stool is $86.50 and the stool costs $25.50 less than the desk.
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4. (k? - 4k+7)+(k? +9k – 3)
ON SA
Answer:
7k + 4
Step-by-step explanation:
I don't know what ON SA means, but here's how I solved it:
(k - 4k + 7) + (k + 9k – 3)
(-3k + 7) + (10k - 3)
(-3k + 10k) + (7 - 3)
7k + 4
PLSSS NEED HELP WILL GIVE CROWN
Add :
-1.25 + 2.5 = 1.25
For plotting the first one we first need to see the integer as here is 1 we will move to 1. Now, here it is given 0.25. Each line between 1 and 2 has 10 numbers gap so, as it 25 > 20 and 25 < 30. So, we should plot it between the 2nd and the 3rd line. As it is 5 it should be in between the line.
Refer the plotting for better identification
Add :
4.2 + (-0.4)
4.2 - 0.4
3.8
For plotting this one we will move to 3 than it has 8 < 10 so it should be plotted within the first dot.
Refer the attachment for better identification
PLS HELP SHOW ME HOW TO DO THIS
A polynomial function h(x) has a zero of x = 2 – 5i with a multiplicity of one. Certain values of h(x) are given in the following table.
x h(x)
–5 0
–2 3
–1 –1
1 2
4 0
7 6
10 5
If every real x-intercept of h(x) is shown in the table and each has a multiplicity of one, what is the degree of h(x)?
A. 2
B. 3
C. 4
D. 5
Using function concepts, it is found that the degree of the function is: 4, option C.
----------------------------------------
The x-intercepts of a function are the values of the function for which the output is zero.The degree of a function is the sum of the multiplicities of the x-intercepts of the function.If a function has a complex root, it means that the conjugate is also a root.----------------------------------------
When [tex]x = -5, h(x) = 0[/tex], thus, x = -5 is one x-intercept.When [tex]x = 4, h(x) = 0[/tex], thus, x = 4 is one x-intercept.There is also a x-intercept(zero) at [tex]x = 2 - 5i[/tex]. There will also be a x-intercept at the conjugate, which is [tex]x = 2 + 5i[/tex].Thus, there are 4 x-intercepts, all with multiplicity 1, which means that the degree of h(x) is 4, option C.A similar problem is given at https://brainly.com/question/10539060
Jaishree studies for 5 hours daily. She devotes 2 hours of her time for science and mathematics. How muþch time does she devote for other subjects ?
Let Time devoted for others be x
[tex]\\ \rm\Rrightarrow x+2=5[/tex]
[tex]\\ \rm\Rrightarrow x=5-2[/tex]
[tex]\\ \rm\Rrightarrow x=3h[/tex]
Answer:
3 hours
Step-by-step explanation:
All we need to do here is subtract to find out how many hours she has left to devote to other subjects.
5 - 2 = 3
Best of Luck!
what’s the solution for
-108pi=6pij
Answer:
j is -18
Step-by-step explanation:
[tex] - 108pi = 6pij \\ - 108 = 6j \\ j = - 18[/tex]
The solution is j = -18 for the expression -108π = 6πj
What are Arithmetic operations?Arithmetic operations can also be specified by subtracting, dividing, and multiplying built-in functions.
The operator that performs the arithmetic operations is called the arithmetic operator.
Operators who let do basic mathematical calculations.
- Subtraction operation: Subtracts the right-hand operand from the left-hand operand.
for example 4 -2 = 2
* Multiplication operation: Multiplies values on either side of the operator
For example 4*2 = 8
Given that the expression
⇒ -108π = 6πj
Divided by 6π both sides
⇒ -108π/6π = 6πj/6π
⇒ -18 = j
⇒ j = -18
Thus, the solution is j = -18 for the expression -108π = 6πj
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When commercial aircraft are inspected, wing cracks are reported as nonexistent, detectable, or critical. The history of a particular fleet indicates that 70% of the planes inspected have no wing cracks, 25% have detectable wing cracks, and 5% have critical wing cracks. Five planes are randomly selected. Find the probability that
a. one has a critical crack, two have detectable cracks, and two have no cracks.
b. at least one plane has critical cracks.
Answer:
b. at least one plane has critical cracks.
find the midpoint of R(5,3) and S(-4,6)
Answer:
(1/2, 9/2)
Step-by-step explanation:
Using the midpoint formula
[tex]\left(\frac{-4+5}{2},\:\frac{6+3}{2}\right)[/tex]
=[tex]\left(\frac{1}{2},\:\frac{9}{2}\right)[/tex]
Answer:
Mid point is (0.5, 4.5)
Step-by-step explanation:
Formular:
[tex]{ \bf{mid - point = ( \frac{x_{1} + x _{2} }{2}, \: \frac{y_{1} + y_{2} }{2} ) }}[/tex]
x1 is 5
x2 is -4
y1 is 3
y2 is 6
[tex]{ \sf{mid - point = ( \frac{ 5 + ( - 4)}{2}, \: \frac{3 + 6}{2} ) }} \\ \\ = { \sf{( \frac{1}{2} , \: \frac{9}{2} )}} \\ \\ = ({ \sf{0.5, \: 4.5)}}[/tex]
how many litters is in a gallon
Answer:3.785 liters
Step-by-step explanation:
Answer:
1 gal = 3.78541
Step-by-step explanation:
A quick search will do it.
solve
pls need help
pls answer now
k/3 + 4 - 5k = -2k / · 3
k + 12 - 15k = -6k
k - 15k + 6k = -12
-8k = -12 / : (-8)
k = 12/8
k = 3/2 ← the end answer
Answer: A)
PLEASE HELP!
Write an absolute value equation with the solution -1 and 5
Write an absolute value equation with no solution
the absolute value of -1 is 1 and the absolute value of 5 is 5 since its still positive. I could be wrong so double check with someone else
the absolute value of -1 is 1 and the absolute value of 5 is 5 since its still positive.
6 pounds of apples cost $12 how much do 8 pounds cost?
Answer:
8=$16
Step-by-step explanation:
6=$12
divide both sides by 6
1=$2
so one pound equals $2 so if 6 pounds equals $12 just add 2 pounds to 6 to make it 8 pounds. you added two pounds so that means you have to add $4 to the total witch will give you
8=$16
You join an aerobics class at the local gym. The
cost is $3 per class plus $10 for the initial mem-
bership fee.
17. Write an equation that shows the relationship
between the number of classes n you attend
and the amount you pay p.
18. Evaluate the equation for n = 1, 2, 5, 8, and
10. Organize your results in an input-output
table.
19. Draw a line graph to represent the data in the
input-output table.
Answer:
#17: p=3n+10
Step-by-step explanation:
#18:
input output
1 13
2 16
5 25
8 34
10 40
#19: for the line graph, plot the points (1, 13), (2, 16), (5, 25), (8, 34), and (10, 40), and draw a straight line through the points.
In the figure, angle DEF is 34x + 11, angle DEG is 2x + 24, and angle GEF is 3x + 12. The value of x is ___.
Answer:
25/29
Step-by-step explanation:
34x+11=2x+24+3x+12
34x+11=5x+36
34x-5x=36-11
29x=25
x=25/29
Which symbol correctly compares the two fractions? Use >, <, or =. Select the correct choice from the drop down. 2/4 Choose... 3/8
Answer:
3/8
Step-by-step explanation:
Stella and brain each heat up a small pizza.stella cuts her pizza into 4 equal slices. Brain cuts his pizza into 8 equal parts,Stella eats two pieces of her pizza Brian eats four pieces of his pizza do they eat the same amount of pizza? PLEASE ANSWER!!!!
Answer:
They are the same amount of pizza.
Step-by-step explanation:
Stella cut her pizza into 4 pieces. If she eats 2 pieces, then she has eaten half of her pizza. Likewise, Brian cut his pizza into 8 pieces. If he eats 4 pieces, then he has eaten half of his pizza. Therefore, they have both eaten the same amount of pizza.
Model:
find the midpoint of the segment with the given endpoints. (2,9) and (-8,-8)
Answer:
The midpoint is (-3, 1/2)
Step-by-step explanation:
To find the x coordinate of the midpoint, add the x coordinates of the endpoint and divide by 2
(2+-8)/2 = -6/2 = -3
To find the y coordinate of the midpoint, add the y coordinates of the endpoint and divide by 2
(9+-8)/2 = 1/2
The midpoint is (-3, 1/2)
Stan's, Mark's, and Wayne's ages are consecutive whole numbers. Stan is the youngest, and Wayne is the oldest. The sum of their ages is 111. Find their ages.
Let Stan's age be x, Mark's age be (x + 1) & Wayne's age be (x + 2).
According to the conditions,⇒x + (x + 1) + (x + 2) = 111
⇒x + x + x + 1 + 2 = 111
⇒3x + 3 = 111
⇒3x = 111 - 3
⇒3x = 108
⇒ x = 108/3
⇒ x = 36
Hence,Stayn's age will be x = 36 years.Mark's age will be (x + 1) = 36 + 1 = 37 years.Wayne's age will be (x + 2) = 36 + 2 = 38 years.▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄In a party of 60 people, 35 had vanilla ice-cream, 35 had chocolate ice-cream. All the people has at least one ice cream then how many of them had i) both vanilla and chocolate ice-cream ii) only Vanilla ice-cream iii) Only chocolate ice-cream
Step-by-step explanation:
[tex]its \: your \: answer \: I \: hope \: it's \: help \: you \: \\ dear[/tex]
A line segment on a number line has its endpoints at -9 and 6. Find the coordinate of the midpoint of the segment.
A. 1.5
B. -1.5
C. 2
D. -3
Answer:
B -1.5
Step-by-step explanation:
please give brainliest if you can, have a good day<3 :)
Answer:
-1.5
Step-by-step explanation:
what did one function say to the other function?
Answer:
2，3
Step-by-step explanation:
for number 1
178X718DIVIDED BY 20x12+478-289divided by 12
Answer:
77136.3166667
Step-by-step explanation:
Hope it helps
Assume that I=E/(R+r) prove that 1/I=R/E+r/E ?
Explanation:
If [tex]I=\frac E{R+r}[/tex] then taking the reciprocal gives
[tex]\frac1I=\frac1{E/(R+r)}=\frac{R+r}E=\frac RE+\frac rE[/tex]
If f(x)=3x^2-2x+4 and g(x)=5x^2+6x-8,find (f-g) (x)
Answer:
-2x^2-8x+12
Step-by-step explanation:
f(x)=3x^2-2x+4
g(x)=5x^2+6x-8
(f-g) (x)= 3x^2-2x+4 - (5x^2+6x-8)
Distribute the minus sign
(f-g) (x)= 3x^2-2x+4 - 5x^2-6x+8
Combine like terms
=-2x^2-8x+12
Answer:
[tex] - 2( {x}^{2} - 4x + 6)[/tex]
Step-by-step explanation:
[tex] f(x)=3x^2-2x+4 \\ g(x)=5x^2+6x-8 \\ (f-g) (x) = 3 {x}^{2} - 2x + 4 - (5 {x}^{2} + 6x - 8) \\ = 3 {x}^{2} - 2x + 4 - 5 {x}^{2} - 6x + 8 \\ = - 2 {x}^{2} - 8x + 12 \\ = - 2( {x}^{2} - 4x + 6)[/tex]
Find (fog)(x) when f (x) =
=-2 and 3(A)= = (I point)
2x
O Gog)(x) =
1+ 6x
1
O Gog)(x) =
2+3x
O Gog(x) =
x+3
4
1
Otog)(x)=
x+3
Finish
Cance
Answer:
A
Step-by-step explanation:
fog(x) = f(g(x) = f(1/2x) = 4x/(1+6x)
Last one for the night
Answer:
C. 2/3, 0.66, 66 2/3%
Step-by-step explanation:
There are 36 inches in a yard.
24/36 (simplify) = 2/3
What is 7x-4(3x-2)=18
Trình bày khái niệm và cách giải phương trình bậc nhất 1 ẩn, hệ phương trình bậc nhất 2 ẩn
what is a perimeter of triangle
Answer:
a+b+c is the formula for calculating the perimeter of a triangle:)
Step-by-step explanation:
9 gal 2 qt to quarts
Answer:
38 us liquid quarts
Step-by-step explanation:
Translate the sentence into an equation.
The sum of 5 times a number and 6 is equal to 7