Answer:
1 ladrillo cuesta 1 dólar. 1 brick costs 1 dollars.
1 kg de cemento cuesta 3 dólares: 1 kg cement costs 3 dollars
1 kg de arena cuesta $ 16: 1 kg sand costs $ 16
Step-by-step explanation:
Spanish
Deje que los ladrillos, la arena y el cemento se denoten por b, sy c. Luego, de acuerdo con la condición dada
20b + 5s + 10c = $ 130 --- ecuación 1
1c = 3b ------ ecuación 2
1s = 4c + 4b ------ ecuación 3
Poniendo la ecuación 2 en la ecuación 3
1s = 4 (3b) + 4b
1s = 16b ---------- ecuación 4
20b + 5s + 10 (3b) = $ 130
50b + 5s = 130 --- ecuación 5
Poniendo la ecuación 4 en la ecuación 5
50 b + 5 (16b) = 130
50 b + 80b = 130
130 b = 130
b = 130/130 = $ 1 ------- ecuación a
1 ladrillo cuesta 1 dólar.
Poner el valor de costo de 1 ladrillo en estas ecuaciones
1c = 3b ------ ecuación 2
1s = 4c + 4b ------ ecuación 3
1c = 3 (1) = $ 3 -------- ecuación b
1 kg de cemento cuesta 3 dólares
1s = 4c + 4b
1 s = 4 (3) + 4 (1)
1 s = 12 + 4
1s = $ 16 ------ ecuación c
1 kg de arena cuesta $ 16
Poner valores de la ecuación a, b, c en la ecuación 1
20b + 5s + 10c = $ 130
20 (1) + 5 (16) + 10 (3) = 130
20 + 80 + 30 = 130
130 = 130 ------------ por lo tanto probado
English
Let the bricks , sand and cement be denoted by b, s and c. Then according to the given condition
20b+ 5s+ 10c= $130--- equation 1
1c= 3b------ equation 2
1s= 4c+4b------ equation 3
Putting equation 2 in equation 3
1s= 4(3b) + 4b
1s= 16b---------- equation 4
20b+ 5s+ 10(3b)= $130
50b + 5s= 130--- equation 5
Putting equation 4 in equation 5
50 b + 5 (16b) = 130
50 b+ 80b= 130
130 b= 130
b= 130/130= $1------- equation a
1 brick costs 1 dollars.
Putting the cost value of 1 brick in these equations
1c= 3b------ equation 2
1s= 4c+4b------ equation 3
1c= 3(1)= $3-------- equation b
1 kg cement costs 3 dollars
1s= 4c+4b
1s= 4(3) + 4(1)
1s= 12+4
1s= $16 ------ equation c
1 kg sand costs $ 16
Putting values from equation a, b, c in equation 1
20b+ 5s+ 10c= $130
20 (1) + 5 (16) + 10 (3)= 130
20 + 80 + 30 = 130
130 = 130 ------------ hence proved
Help and no links pls
Answer: -1
Step-by-step explanation:
x is the slope and the value of x is negative one.
log x + log (x-3) = 1
Given:
The logarithmic equation is:
[tex]\log x+\log (x-3)=1[/tex]
To find:
The value of x.
Solution:
Properties of logarithm used:
[tex]\log a+\log b=\log (ab)[/tex]
[tex]\log 10=1[/tex]
[tex]\log x[/tex] is defined for [tex]x>0[/tex].
We have,
[tex]\log x+\log (x-3)=1[/tex]
Using properties of logarithm, we get
[tex]\log [x(x-3)]=\log 10[/tex]
[tex]x^2-3x=10[/tex]
Splitting the middle term, we get
[tex]x^2-5x+2x-10=0[/tex]
[tex]x(x-5)+2(x-5)=0[/tex]
[tex](x-5)(x+2)=0[/tex]
[tex]x=5,-2[/tex]
In the given equation, we have a term [tex]\log x[/tex]. It means the value of x must be greater than 0 or positive. So, the only possible value of x is:
[tex]x=5[/tex]
Therefore, the value of x is 5.
ILL MARK BRAINLIEST TO FIRST PERSON THAT ANSWERS CORRECTLY.
Explain the steps of solving the system of equations y = -x+4 and y = 3x by substitution.
Answer:
X=1, y=3
Step-by-step explanation:
-x+ 4=3x
4=4x
1=x
insert value of x into either equation to solve for y.
Y=3x
y=3(1)
y=3
What’s the domain of this graph?
Answer: ( ∞ , -∞ )
Step-by-step explanation:
The probability of a high school basketball team winning any game is 58%. This team is in a six-game tournament, and the games are played independently of one another. Let X represent the number of games the team might win in this tournament. What are the mean and standard deviation of X?
Mu Subscript x Baseline = 2.52, Sigma Subscript x Baseline = 2.15
Mu Subscript x Baseline = 3.48, Sigma Subscript x Baseline = 1.21
Mu Subscript x Baseline = 3.48, Sigma Subscript x Baseline = 1.46
Mu Subscript x Baseline = 5, Sigma Subscript x Baseline = 1.46
Answer:
C)
Step-by-step explanation:
I’m not sure
B.) μx = 3.48 σx = 1.21
NO LINKSS PLS!!! Help a girl out plsss I need to passThe following comparative stem-and-leaf plot represents the ages in years)
of the members of two professional basketball teams. Which of the following
statements is correct?
Answer:
B
Step-by-step explanation:
A car company makes 5 different types of compact cars , 4 different types of mid-sized cars and 3 different types of large cars. If a rental company would like to buy one compact car, one mid-sized car and one large, how many different ways can a set of cars be bought?
Answer:
a set of cars can be bought in one way
1 different way
Which equation has a greater rate of change than the linear function in the table?
х
-5
-3
у
-18
-8
1
12
3
22
A
y = 5х – 3
B
y = -4x – 18
С
y = -3.2 + 2
D
y = 6x + 13
Can someone pleaseeee help and if you’re correct i’ll give brainliest
......Answer: V = 1046.6
One of the legs of a right triangle measures 14 cm and the other
leg measures 9 cm. Find the measure of the hypotenuse. If
necessary, round to the nearest tenth.
Answer:
16.6
Step-by-step explanation:
[tex]14^{2}+9^{2}= 277\\[/tex]
[tex]\sqrt{277}[/tex]=16.6(rounded)
i think its like 126
Your friend thinks that the regular pentagon in the diagram has 10 lines of symmetry. Explain and correct your friend's error.
Answer:
A pentagon has 5 lines of symmetry, not 10.
Step-by-step explanation:
There are only 5 lines connecting to form a pentagon and all five lines are the same length.
A game rental service allows customers to rent games for $5 each
after paying a monthly membership fee of $7. The total amount
spent each month can be modeled by y=5x+7. What does the
variable x represent in this function?
a) The total money spent each month
b) The number of games rented
c) The cost of renting 1 game
Anyone can help
Me with this?
Answer:
the number of games rented
Step-by-step explanation:
in y=5x + 7
7= membership fee
5x represents the $5 per game times the number of games rented x
PLEASE HELP!! NO LINKS- I WILL MARK BRAINLIEST!!
#3) Using this picture, find the measure of J.
A. 28 square root 3
B. 14
C. 28
D. 56
#4) Using the same picture, find the measure of side K.
A. 28 square root 3
B. 14
C. 28
D. 56
The answer for both is NOT B- it’s either A, C, or D :(
Answer:
J: 28 square root 3
K: 56
Step-by-step explanation:
not sure about J but def sure abt K
**NOTE YOU WOULD GET 34 POINTS IF YOU ANSWER THIS**
Answer:
The answer is 25
Step-by-step explanation:
Answer: 25 Is the correct answer.
(05.03 LC)
What is the initial value of the function represented by this graph? (5 points)
1 is the initial value because it started at 1 in the beginning, and it transfered up to 6,7.
Answer:
1
Step-by-step explanation:
The initial value is the y intercept or where the line crosses the y axis.
Which equation is true?
A.
43 + 24 = 38 + 30
B.
43 + 24 = 38 + 19
C.
43 + 24 = 38 + 24
D.
43 + 24 = 38 + 29
Answer:
43 + 24 = 67
38 + 29 = 67
This means that there equal making
D. 43 + 24 = 38 + 29
The correct answer.
someone please help thanks!<3
Answer:
y = -5x + 4/3
Step-by-step explanation:
m is the slope and b is the y intercept. m= -5 so -5 is the slope and b= 4/3 so 4/3 is the y intercept.
Which graph represents the inequality
X > 15?
this one because x has to be bigger than 15.
The graph with inequality x>15 is (B)
What is inequality?A statement of an order relationship—greater than, greater than or equal to, less than, or less than or equal to—between two numbers or algebraic expressions.
Given:
x>15
As, x is greater than 15.
So, the graph with x value labelled from the numbers greater than 15 which is represented by graph on right top corner.
Learn more about inequality here:
https://brainly.com/question/20383699
#SPJ2
y=2x^2+12x+14 in vertex form
Answer:
y = 2(x + 3)² - 4
Step-by-step explanation:
The equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
Using the method of completing the square
y = 2x² + 12x + 14 ← factor out 2 from the first 2 terms
= 2(x² + 6x) + 14
To complete the square
add/subtract ( half the coefficient of the x- term)² to x² + 6x
y = 2(x² + 2(3)x + 9 - 9 ) + 14
= 2(x + 3)² - 18 + 14
= 2(x + 3)² - 4 ← in vertex form
Oceanside Bike Rental Shop charges 13 dollars plus 7 dollars an hour for renting a bike. Sandy paid 41 dollars to rent a bike. How many hours did she pay to rent the bike?
Sandy rented the bike for _____
hours.
Two number cubes with sides numbered 1-6 are rolled. What is the probability that the sum of the numbers on the cubes is 12?
Answer:
1/36
Step-by-step explanation:
Attached is a chart showing the 36 possible outcomes for rolling 2 number cubes. The sum of the two cubes is 12 in only one of the outcomes (both sixes). The probability is 1/36.
what is wrong with the information given in the diagram?
Answer:
the answer is c
Step-by-step explanation:
inscribed angles made by same base should be equal
I write this question for no reason
Answer has to be at least 20 words long to get brainliest
Answer:
hi i need points and i dont know what to write i hope you have a great day or night :)
Step-by-step explanation:
yeoo, how are you? I hope you're doing well and having a great day g. Anyways I only need one more brainliest to pass this rank, so it would be real helpful but it's okay if not. I hope you are taking care of yourself, have a nice day/night !
Are the ratios 18:9 and 2:1 equivalent?
Answer:
Yes
Step-by-step explanation:
[tex]\frac{18}{9} =\frac{2}{1}[/tex]
The two ratios are,
→ 18 : 9 and 2 : 1
We have to find,
→ whether the ratios are equivalent?
Now simplify the first ratio,
→ 18(÷9) : 9(÷9) = 2 : 1
→ 2 : 1 = 2 : 1
Yeah, the two ratios are equivalent.
Find the slope of the line that passes through the points (2, -3) (-1, 2).
im just going to type in all of the questions i need answers with tysm besties
-16 t+3.5
Answer:
on the x axis start from the point and draw it forward to -16(basically negative side) the draw a line upwards on the y-axis to the line inbetween 3 and 4 (this is on the y axis)
Step-by-step explanation:
-4(w+1) = -24−4(w+1)=−24minus, 4, left parenthesis, w, plus, 1, right parenthesis, equals, minus, 24 w =w=w, equals
Answer:
W=5
Step-by-step explanation:
-4(w+1}=-24
-4w-4=-24
-4w=-20
w=5
Answer:
its 5
Step-by-step explanation:
i got i correct ;)
mb- The graph shows the relationship between time and the number of soda bottles a machine can make. Use the points (2,100) and (4,200) to find the number of soda bottles the machine can make each minute
Answer:
1200
Step-by-step explanation:
We can gather from what's given that y=20xy represents the total number of bottles produced in the given time in seconds, which is x. When x=1, y=20, This means that each second the machine can make 20 soda bottles. Each minute is 60 seconds, so when x=60, y=20*60 =1200 soda bottles.
find the length of side x using the Law of Cosines.
Answer:
The length of side x is 22.91
Step-by-step explanation:
As per law of cosine
[tex]X = \sqrt{a^2 + b^2- 2*a*bcos\gamma}[/tex]
Where
[tex]gamma = 56[/tex] degrees
a = 20
b = 27
Substituting the given values in above equation, we get -
[tex]X = \sqrt{20^2 + 27^2 - 2*20*27*cos 56} \\X = 22.91[/tex]
Hence, the length of side x is 22.91
Each of the figures are similar. Find the missing length
Answer:
63
Step-by-step explanation:
the first one is 9x bigger then the second one
so 7x9 is 63