Responder:
Copias del libro A = 50
Copias del libro B = 70
Explicación paso a paso:
Costo por libros A = 200
Costo por libro B = 150
Sea el número de libros A = x
Número de libros B = y
Número total de libros comprados = 120
Costo total = 20,500
x + y = 120 - - - (1)
200x + 150y = 20500 - - - (2)
De 1)
x = 120 - y
Sustituya x = 120-y en (2)
200 (120 - años) + 150y = 20500
24000 - 200y + 150y = 20500
24000 - 50y = 20500
-50 años = 20500 - 24000
-50y = - 3500
y = 70
x = 120 - y
x = 120 - 70
x = 50
what is the square root of 16
Answer:
the square root of 16 is 4
Step-by-step explanation:
Will give brainliest screenshot Will give brainliest screenshot Will give brainliest screenshot Will give brainliest screenshot attached
Answer:
one 5 and 2 ones hope this will help u
Answer:
One and five should be the answer.
I WILL GIVE BRAINLIEST!!!!
Answer:
the top right is 18 and the bottom middle is 5 there are 18 apples in a group that has 10 pears.
Step-by-step explanation:
ratio
The ice cream shop sells sundaes for $2 each and banana splits for $3 each. One day, the shop sold 8 more sundaes than banana splits and also made a total of $156. Which system of equations represents the situation?
Answer:
[tex]s = 8+b\\2s+3b=156[/tex]
Step-by-step explanation:
To find which systems of equation represents the situation, we can break down the key information and create two variables:
Variables:
Let [tex]s[/tex] = number of sundaes sold.
Let [tex]b[/tex] = number of banana splits sold.
Given information:
Sundae: [tex]\$2[/tex]
Banana Splits: [tex]\$3[/tex]
8 more sundaes sold than banana splits. This can be expressed by [tex]s=8+b[/tex].
Total sold was [tex]\$156[/tex]. This can be expressed as [tex]2s+3b=156[/tex].
∴ The systems of equation that expresses this situation are [tex]s=8+b[/tex] and [tex]2s+3b=156[/tex].
Hope this helps :)
Which of the following in the picture is true about the function f(x) = (x-7)^2 + 9
Answer:
A).a. The vertex is in quadrant IV and the graph opens down.
Step-by-step explanation:
Please help me!!!!! I’m confused
Answer:
means you divide.
Step-by-step explanation:
A positive you would multiply and a negative you divide.
Does that make sense>
If 5 more than 5 times a number is 20, what is the number?
Answer:
9
Step-by-step explanation:
20 divided by 5 is 4 plus 5 is 9
A function is defunded by f(x)=x/4. What is f(-8)?
pls help :(
A rectangle has a perimeter of 38+x 38+x centimeters. The rectangle has a length of 3x−2 3x−2 centimeters and a width of x centimeters. What is the length of the rectangle? A. Substitute the dimensions of the rectangle info the perimeter formula P=2w+2l P=2w+2l b. Solve for x. C. Find the length of the rectangle.
Answer:
The length of the rectangle is 6 centimeters
Step-by-step explanation:
The perimeter of a rectangle =
P = 2L + 2W
A rectangle has a perimeter of 38+x centimeters. The rectangle has a length of 3x−2 centimeters and a width of x centimeters.
Hence:
38 + x = 2(3x - 2) + 2(x)
38 + x = 6x - 4 + 2x
Collect like terms
38 + 4 = 6x + 2x - x
42 = 7x
x = 42/7
x = 6 centimeters
The length of the rectangle is 6 centimeters
Am i right???
plss check and dont lie
will give brainliest
Answer:
by the looks of it yeah you are
Step-by-step explanation:
give the new coordinates. Square WXYZ with vertices W(1,7), X(6,5),
Y(4,0), and Z(-1, 2): (x, y) = (x-7, y-6)
Given:
The vertices of square WXYZ are W(1,7), X(6,5), Y(4,0), and Z(-1, 2).
Consider the rule of transformation is [tex](x, y)\to (x-7, y-6)[/tex].
To find:
The new coordinates.
Solution:
We have,
[tex](x, y)\to (x-7, y-6)[/tex]
Using the above rule of transformation, we get
[tex]W(1, 7)\to W'(1-7, 7-6)=W'(-6,1)[/tex]
[tex]X(6, 5)\to X'(6-7, 5-6)=X'(-1,-1)[/tex]
[tex]Y(4, 0)\to Y'(4-7, 0-6)=Y'(-3,-6)[/tex]
[tex]Z(-1, 2)\to Z'(-1-7, 2-6)=Z'(-8,-4)[/tex]
Therefore, the new vertices are W'(-6,1), X'(-1,-1), Y'(-3,-6) and Z'(-8,-4).
n − 23 ≥ 19 solve the inequality
Answer:
N greater than or equal to 42
Step-by-step explanation:
You have to look at the equation and then add 23 to both of the sides. After you will get 42 and drop down everything.
Sometimes, people have a pet house mouse. If a mouse could travel at top speed, running 20.25 miles in 2.5 hours, how far could It travel In one hour?
Answer:
8.1 miles
Step-by-step explanation:
You have to divide
What is the equation of the line that passes through the point (7,−3) and has an undefined slope
Answer:
The equation of the line that passes through the point (7,−3) and has an undefined slope will have the equation: x = 7.
Step-by-step explanation:
As the line has an undefined slope, meaning the line is vertical.
As we know that the vertical line passes through (7, -3), so it can never pass through any x-value other than x = 7, although it can pass through infinite y-values.
so the equation of line will be: x = 7
Therefore, the equation of the line that passes through the point (7,−3) and has an undefined slope will have the equation: x = 7.
SOMEONE PLZ HELP! ALSO DONT SPAM!
Answer
A : (1,-5)
Explanation
Dude, I'm pretty sure the stuff is used to throw you off. Just find the coordinates.
Answer:
A : (1,-5)
Step-by-step explanation:
Jane made a mistake when writing down a mutliplication , and she multiplied by 54 instead of 45. Her answer was 198 more than it should have been. What number did she multiply 54 by?
Answer:
22
Step-by-step explanation:
Given that:
Let number multiplied by 54 = x
Let output = y
x * 54 = y + 198
x * 45 = y
54x = y + 198 - - - (1)
45x = y - - - (2)
Put y = 45x in (1)
54x = 45x + 198
54x - 45x = 198
9x = 198
x = 22
Number multiplied by 54 is 22
Does anyone know how to dilate a rectangle by 1/3
Will mark BRAINLIEST!!!!! if possible!
Answer:
Does this help?
Step-by-step explanation:
The chart shows the elevation of several cities. City Elevation (m) Amsterdam 2 Rotterdam –4 Utrecht 1 Zuidplaspolder –7 Which city in the chart has the lowest elevation? Amsterdam Rotterdam Utrecht Zuidplaspolder
Answer:
The Answer Is -7 Zuidplaspolder
Step-by-step explanation:
Answer:
im sure its 7 no cap
Step-by-step explanation:
Can someone help me with 1,2,3
Answer:
I think its
1. AC=14
2.x=6
3.x=4
help me find x is this question
Answer:
12.25
Step-by-step explanation:
You have to work it out like if it was a ratio.
basically you need to make 7/x equal to 4/7
to do this you divide 4 by 7 and the divide 7 by the answer. This will make x equal to 12.25
Problem 1:
1
Define the variable
1. Trini needs more than 51
cubic feet of soil to top up
his raised garden. Each bag
of soil contains 1.5 cubic
feet. Write and solve an
inequality to find how many
bags of soil Trini needs.
2. Write the inequality
B. Solve the inequality
Interpret the solution
d speaker notes
Answer:
variable or scalar is a storage location paired with an associated symbolic name, which contains some known or unknown quantity of information referred to a
What is an equation of the line that passes through the point (-2,-6)(−2,−6) and is parallel to the line x+2y=8x+2y=8?
Answer:
y=
2
1
x−7
Step-by-step explanation:
uii
Answer:
y=1/2x-7
I know it because the guy who typed the other answer was a idiot
What is the height of the prism shown below?
25
13
7
10
I start with 100 and subtract 3 repeatedly. (100 - 3, 97 - 3, 94 - 3 and so on). How many subtractions would I have to do to get the FIRST single-digit number?
Using an arithmetic sequence, it is found that you would need to do 32 subtractions
In an arithmetic sequence, the difference between consecutive terms is always the same, called common difference d.
The nth term of an arithmetic sequence is given by:
[tex]a_n = a_1 + (n - 1)d[/tex]
In which [tex]a_1[/tex] is the first term.
In this problem:
Starts with 100, which is the first term, hence [tex]a_1 = 100[/tex].Subtracts 3, which is the common difference, hence [tex]d = 3[/tex]Then:
[tex]a_n = a_1 + (n - 1)d[/tex]
[tex]a_n = 100 - 3(n - 1)[/tex]
[tex]a_n = 103 - 3n[/tex]
To get a single-digit number, we need that:
[tex]a_n \leq 9[/tex]
Hence, solving the inequality:
[tex]103 - 3n \leq 9[/tex]
[tex]-3n \leq -94[/tex]
[tex]3n \geq 94[/tex]
[tex]n \geq \frac{94}{3}[/tex]
[tex]n \geq 31.3[/tex]
Rounding up, 32 subtractions need to be done.
A similar problem is given at https://brainly.com/question/23842987
Which ones form a square?
Answer:
the first one
Step-by-step explanation:
f(1) = 25
(1) =
f(n) = f(n − 1). (-5)
f(3) =
Answer:
f(3)=1
It is correct
Multiply (3x2 + y2) by (x2 + 2y2)
Answer:
3x^4 + 7x^2y^2 + 2y^4
Step-by-step explanation:
(3x^2 + y^2) (x^2 + 2y^2)
3x^4 + 6x^2y^2 + x^2y^2 + 2y^4
3x^4 + 7x^2y^2 + 2y^4
-TheUnknownScientist
In Carna's desk drawer, there are 16 paper clips and 20 elastic bands. In Noelia's office supply tray, there are 10 paper clips and 13 elastic bands. Who has a lower ratio of paper clips to elastic bands?
Answer:
Carna has a lower ratio of paper clips to elastic bands
0.2
Step-by-step explanation:
step one
given data
In Carna's desk drawer
number of paper clips 16
number of elastic band= 20
ratio of paper clips to elastic bands
16:20= 1/5 =0.2
Noelia's office supply tray
number of paper clips 10
number of elastic band= 13
ratio of paper clips to elastic bands
10:13= 0.76
Carna has a lower ratio of paper clips to elastic bands
0.2
One week, Isabella bought two bags of apples and three bags of oranges. The next week, she bought one bag of apples and two bags of oranges. If a represents the cost of each bag of apples and are represents the cost of each bag of oranges, which expression could Isabella used to calculate the difference between the amount she spent each week?
A: 3a-r
B: 3a-r
C: (2a-3r)-(a-2r)
D: (2a+3r)-(a+2r)
Answer:
c
Step-by-step explanation:that is the answer
PLEASE GIVE ME AN ANSWER QUICKLY! Hiroshi spends 30 minutes on history homework , 60 minutes on English homework, and x minutes on math homework. One fourth of his total homework time is spent on math. Which equation can be used to find the amount of time Hiroshi spends on his math homework?
A. 1/4 (x+30+60)=x
B. 1/4 (x)=x(30+60)
C. 1/4x(30+60)=x
D. 1/4(x)=(30+60)
Answer:
A
Step-by-step explanation:
He spends:30 mins on History60 mins on Englishx mins on mathso the total time he spends is [tex](TotalTime)minutes=(30+60+x)minutes[/tex] one fourth of this is his math time, since x is math time, then we have [tex]\frac{1}{4}(TotalTime)minutes=(x)minutes[/tex] But we know what totaltime in minutes is so [tex]\frac{1}{4}(30+60+x)minutes=(x)minutes[/tex] or simply: [tex]\frac{1}{4}(30+60+x)=x[/tex]