Answer:
true because you combine like terms
Answer:
True.
Step-by-step explanation:
The two terms share the same variable (as well as the same amount of that variable), that being y. Combine the coefficients:
7y + 8y = (7 + 8)y = 15y
~
Ecuación 2:
10x + 20y = 8000
ayudaaa
Answer:
y = 300
x = 200
Step-by-step explanation:
Esta pregunta parece incompleta, parece que acá tenemos un sistema de ecuaciones:
x + y = 500
10*x + 20*y = 8000
Estas ecuaciones tienen que resolverse en conjunto, y de acá sacaremos un par de puntos (x, y) que son solución para ambas ecuaciones.
El primer paso para resolver esto es aislar una variable en una de las ecuaciones, en este caso podemos aislar x en la primera ecuación y así obtener:
x = 500 - y.
Ahora podemos reemplazar eso en la segunda ecuación y obtener:
10*(500 - y) + 20*y = 8000.
Ahora resolvemos esto para y.
5000 - 10*y + 20*y = 8000
10*y = 8000 - 5000 = 3000
y = 3000/10 = 300.
Y sabíamos que:
x = 500 - y = 500 - 300 = 200
Entonces la solución es:
y = 300
x = 200
If the length of a rectangle in terms of x is x2 + 2x + 5, and its width is 2x + 3, what is the perimeter of this rectangle?
Answer:
6x
Step-by-step explanation:
Perimeter of rectangle is [tex]2x^{2} +8x+16[/tex].
What is perimeter of rectangle?The perimeter of a two-dimensional shape is the total length of the outline. To find the perimeter of a rectangle, we add the lengths of all four sides.
Given
Length of a rectangle in terms of x = [tex]x^{2} +2x+5[/tex]
Width of a rectangle in terms of x = [tex]2x+3[/tex]
Perimeter of rectangle = 2(length + width)
P = [tex]2(x^{2} +2x+5 + 2x+3)[/tex]
P = [tex]2(x^{2} +4x+8)[/tex]
P = [tex]2(x^{2} )+2(4x)+2(8)[/tex]
P = [tex]2x^{2} +8x+16[/tex]
Hence, Perimeter of rectangle is [tex]2x^{2} +8x+16[/tex].
Find out more information about perimeter of rectangle here
https://brainly.com/question/15287805
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The graph shows the amount of savings over time in Eliana's account. Lana, meanwhile, puts $40 each week into her savings account. If they both begin with $0, who is saving at the greater rate?
Answer:
Lana
Step-by-step explanation:
hello everyone.
i want to remind everyone to take a break and take care of themselves
take a minute to breath
how are you feeling
if you feel overwhelmed, you are not alone
everything will be okay
look at the seal
it's so cute
Answer
Wow, thanks.
Step-by-step explanation:
I really needed that. Maybe I shouldn't say something personal, but I've been going through a bunch of pointless stress. So thank you, I really found confort through this. I hope you have a good day too. Lots of love and I hope you are safe and happy, wherever you are. No matter who you are, thanks.
:)
(That seal is really is really cute.)
Find the range for the measure of the third side of a triangle given the measures of the other two sides are 4 and 8
Answer:
4 < x < 12
Step-by-step explanation:
Given 2 sides, then let x be the third side and
difference of 2 sides < x < sum of 2 sides , that is
8 - 4 < x < 8 + 4
4 < x < 12
What is the perimeter of this triangle ?
Answer:
36 units
Step-by-step explanation:
The two legs of this right triangle are 9 and 12. In order to find the length of the hypotenuse, you must plug in the 9 and 12 to the Pythagorean theorem:
a^2 + b^2 = c^2, where a and b are legs and c is the hypotenuse
If you plug in the values 9 and 12, you get:
9^2 + 12^2 = c^2
= 81 + 144 = c^2
= 225 = c^2
= 15 = c
This means that the hypotenuse is 15 units long. Now, you just need to add all the sides to get:
9 + 12 + 15
= 36 units
(Also as a fun fact, a Pythagorean Triple is when the three sides of a right triangle are integers. It is good to memorize a few of these, like 3-4-5, 5-12-13, 7-24-25 and 8-15-17. The largest side value is always the hypotenuse, and if you multiply all the sides by a scale factor, you can get other triples. If you knew the 3-4-5 triple, you might have noticed that 9 and 12 are 3 times each of the legs 3 and 4. From that information, you could just multiply the 5 by 3 to get 15 for the hypotenuse of this triangle, which might've made this problem a little easier)
Answer:
36
Step-by-step explanation:
What is the answer to this question 3x+7=4x
Answer:
7=x
Step-by-step explanation:
Anyone want to help me with math
Solve 1−2/5 < 5x+2/5−4x
Answer:x > 1/5
Step-by-step explanation:
how do you solve this equation?
x/2 - x = x/4 + 6
Answer:
[tex]x=-8[/tex]
Step-by-step explanation:
[tex]\frac{x}2} -x=\frac{x}{4} +6[/tex]
Let's begin by getting rid of the fractions by multiplying both sides of the equation by the least common multiple of the denominators 2 & 4 (4).
[tex]4(\frac{x}2} -x)=4(\frac{x}{4} +6)[/tex]
Distribute:
[tex]\frac{4x}{2} -4x=\frac{4x}{4} +24[/tex]
Simplify:
[tex]2x-4x=x+24[/tex]
Combine like terms:
[tex]-2x=x+24[/tex]
Subtract [tex]x[/tex] from both sides of the equation:
[tex]-3x=24[/tex]
Divide both sides of the equation by the coefficient of [tex]x[/tex], which is [tex]-3[/tex]:
[tex]x=-\frac{24}{3}[/tex]
Simplify:
[tex]x=-8[/tex]
Which of the following happens when 21.63 is multiplied by 103?
A.The digit in the tens place moves to the hundredths place.
B.The digit in the tens place moves to the thousandths place.
C.The digit in the hundredths place moves to the tens place.
D.The digit in the hundredths place moves to the hundreds place.
Lea wrote a number riddle. Her clues were:
9 is 10 times the value of the 9 in 329,513
2 is 110 the value of the 2 in 7,562
6 is 110 the value of the 6 in 4.68
Which number is an answer to Lea's riddle?
Answer:
498,173.26
Step-by-step explanation:
whoever gets it right is going to get marked as brainiest
Answer:
1/4
Step-by-step explanation:
Chen completed the division problem below. 0.9 StartLongDivisionSymbol 192.6 EndLongDivisionSymbol right arrow 9 StartLongDivisionSymbol 192.6 EndLongDivisionSymbol minus 18 = 12. 12 minus 9 = 36. 36 minus 36 = a remainder of 0 and a quotient of 21.4. What is Chen’s error? He included a 4 in the quotient, which does not belong. He multiplied the dividend by 100 instead of 10. He should have multiplied both numbers by 100. He did not subtract correctly in one of the steps.
i will give the crown to the correct answer please and thank you :)
Answer:
the answer is
He did not subtract correctly in one of the steps. D
step by step explination: just took the test.
put me as branliest
Answer:
He multiplied the dividend by 100 instead of 10.
Step-by-step explanation:
Have a great day!
(Edgeunity quiz)
I’ve been trying to get help on this app but no one is helping me at all . So again, if someone can help me I would appreciate it. Please!!. I’ll give a brainlest
1). What is y when x = 40?
A) about 120
B) about 150
C) about 190
D) about 210
2). What is x when y=400?
A) about 72
B) about 74
C) about 79
D) about 83
Pleaseee help !!!
Answer:
I believe it is this :
1) C
2) B
((I wasn't paying attention before thanks GuffeyK14))
Find the quotient of x4 + 2x + 4x - 10 divided by x + 2.
show your work
Step-by-step explanation:
5u = 56 -3u i dont get how this works ;-; :p
The center of a circle lies on the line y=6x+2 and is tangent to the X axis at (-2,0) what is the equation of the circle in standard form?
Answer:
(x+2)^2 + (y+10)^2 = 100
Step-by-step explanation:
y = 6x + 2
Z(-2,0)
x = -2
y = 6 x (-2) + 2
y = -12 + 2
y = -10
M(-2, -10)
r = 0 - (-10) = 10
(x + 2)^2 + (y + 10)^2 = 100
Answer:
(x + 2)^2 + (y + 10)^2 = 100
Step-by-step explanation:
+2.....+10..100
exactly that
Triangle ABC is graphed in the xy-coordinate plane, as shown.
You may interact with the applet to help answer the questions,
Triangle ABC is reflected across the y-axis to form
AA'B'C'. What are the coordinates of B' after the
reflection?
А
B' (2, - 1)
A 6
5
B
B' (2, 1)
4.
С
B'(-2, 1)
3
С
2
D
B' (1, 2)
1
-8-7 -6 -5 -4 -:B
-1.
1
1 2 3 4
5 6 7
-2
-3
-4
-5
-6
-7
to
Answer:
that will be A
Step-by-step explanation:
Simplify: (1/3 - 2b)27
......................................
Answer:
9 -54b ________________
R(0, 9) and S(4, 5) are the endpoints of a line segment. What is the midpoint M of that line segment?
Write the coordinates as decimals or integers.
M = (
,
)
M = ( 2, 7)
Step-by-step explanation:
formula to find mindpoint is
[tex](\frac{x2 + x1}{2} \frac{y2 + y1}{2} )[/tex]
(0,9) = (x1, y1)
(4,5) = (x2,y2)
now substitute those into the formula!
[tex](\frac{4 + 0 }{2} \frac{5 + 9}{2} )[/tex]
now solve for x & y !!
[tex]x = \frac{4 + 0}{2} = \frac{4}{2 } = 2[/tex]
[tex]y = \frac{5 + 9}{2} = \frac{14}{2} = 7[/tex]
so now that we have solved for x & y put it in point form and your done !!
point for is (x,y)and thanks why the Midpoint is (2,7)
Naomi is buying bagels for a family gathering. Each bagel costs $1.25. Answer the questions below regarding the relationship between the total cost and the number of bagels purchased.
Answer:
total cost = 1.50x
Step-by-step explanation:
Given cost of 1 bagel = $1.25
Let the number of bagels purchased by x
cost of x bagels = cost of 1 bagel *x
cost of x bagels = 1.50*x
Thus,
relationship between bagels and total cost is as shown below
total cost = 1.50x
where x is the number of bagels purchased.
Answer:
The independent variable, x, represents the number of bagels purchased, and the dependent variable is the total cost of the bagels, because the total cost of the bagels depends on the number of bagels purchased.
A function relating these variables is N(x) = 1.25x.
So N(4) =5, meaning 4 bagels will cost 5 dollars.
Please give me Thanks
Sydney asked her friends to write down the number of hours they practice their instruments each week. The data is shown.
1, 6, 6, 5, 2, 2, 0,5,6,7
What is the median of the data?
Answer:
5.5
Step-by-step explanation:
if you order the number from least to greatest like this 0,1,2,2,5,5,6,6,6,7 the median is the median number so here the median is 5.5 the reason it is 5.5 is bc the middle number is 5 and 6 and the middle number of that is 5.5
-11 + 9(x + 1) = 4(1 + 3x) - 3
Answer:
x = -1
Step-by-step explanation:
-11 + 9(x+1) = 4(1+3x) - 3
9x + 9 - 11 = 12x + 4 -3
9x - 2 = 12x +1
-2 = 3x + 1
-3 = 3x
x = -1
Hope this helped
Sorry if it's wrong
:)
WHY must the same operation be performed on both sides of an equation?
Answer:When you are given a problem, the two sides are equal, so they are equally weighted. As long as you do the same thing on both sides, they remain the same weight. The only way that one side can become "more weight" on a side is if you make a math mistake, and thus the answer would not satisfy the original equation
Step-by-step explanation:looked it up... have a good day!
Last week, the value of an investment changed at a rate of –$0.80 each hour.
After how many hours was the total change in value –$3.60?
Answer:
4 hours
Step-by-step explanation:
3.6 / .8
Graph the function f(x) = -x-8x-13
Answer:
the answer is there...
Please please please help me with geometry
“Solve for z. Remember to write your statements and your reasons.”
The reasons are very tricky for me because if we don’t use the right terms we don’t get credit
Answer:
w r riwuhensjshdbbxbdhdurydhdhhrjjrdjdhjeie9
Answer:
I solve this one already let me check it and will put it in comments
Question 3
dilation of 2
K(-1,0), (1, 2), uſo,-2)
Which of the following sets of ordered pairs correctly identify
K', C' and U'?
OK(-1/2.0), C (1/2, 1). U (0.-1)
K(-2.0): C 12.4). U (2-4)
OK[-2.0): C 12,2). U (0,-4)
OK[-2.0): C (2.4). U (0-4
Answer:
The correct answer is K(-2,0) C(2,4) U ( 0,-4)
Step-by-step explanation:
Evaluate 42,147÷63. Round to the nearest whole number, if necessary.
Answer:
669 is the answer to this equation
Step-by-step explanation:
brainliest?
Answer:
669
Step-by-step explanation:
g. If you are going 70.0 mi/hr, how many miles do you travel in 0.681 hours!
Answer:
47.67 miles (in 40.86 minutes or 40 minutes and 51.6 seconds)
Step-by-step explanation:
Simple. Multiply these values together to cancel out the quantity in the denominator (cross multiply).
0.681 * 70 = 47.67
let x be the distance in miles:
70.0/1 = x/0.681
0.681 * 70 = 1 * x
47.67 = 1 * x
47.67 = x