Is (–5, 0.5) a solution of this system? x – 4y = –7, 0.2x + 2y = 0 Substitute (–5, 0.5) into x – 4y = –7 to get . Substitute (–5, 0.5) into 0.2x + 2y = 0 to get . Simplify the above equations to get
Answer:
Substitute (–5, 0.5) into x – 4y = –7 to get
✔ –5 – 4(0.5) = –7
.
Substitute (–5, 0.5) into 0.2x + 2y = 0 to get
✔ 0.2(–5) + 2(0.5) = 0
.
Simplify the above equations to get
✔ –7 = –7 is true and 0 = 0 is true; a solution.
Step-by-step explanation:
PLEASE MARK BRAINLIEST!!!!!!!!!!!(–5, 0.5) a solution of the system of equations.
What is a system of equations?A system of equations is a set or collection of equations that you deal with all together at once.
Given are the equations, x – 4y = –7 and 0.2x + 2y = 0;
Substitute (–5, 0.5) into x – 4y = –7 to get
–5 – 4(0.5) = –7
Substitute (–5, 0.5) into 0.2x + 2y = 0 to get
0.2(–5) + 2(0.5) = 0
Simplify the above equations to get
–7 = –7 and 0 = 0 is true
Hence, (–5, 0.5) a solution of the system of equations.
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whats the answer????????????
Answer: B. 9
Step-by-step explanation:
3^4 / 3^2
When dividing deomenators, it is the same as subtracting the exponents.
3^4 / 3^2 is the same as 3^2 or 3 * 3 which is 9
The lowest temperature ever recorded in the U.S. was - 79.8 degrees Fahrenheit in Prospect Creek, Alaska. Which of the following best explains what temperature means.
A. It means the temperature was 79.8 Fahrenheit more than one.
B. It means the temperature was 79.8 Fahrenheit more than zero.
C. It means the temperature was 79.8 Fahrenheit less than one.
D. I means the temperature was 79.8 Fahrenheit less than zero.
Answer:
D
Step-by-step explanation:
Negative numbers are less than zero.
Please help! Three one-inch cubes are stacked. What is the surface area of the composite figure that is formed?
Answer:
i think it would just be 3
Step-by-step explanation:
since the surface area of one cube is 1 (1x1x1) and then there is 2 more, you would do 1+1+1 so yea i think its three
Zoey is going to invest in an account paying an interest rate of 3.4% compounded
quarterly. How much would Zoey need to invest, to the nearest ten dollars, for the
value of the account to reach $81,000 in 8 years??
Answer:
61780
Step-by-step explanation:
Find the two square roots of 1/16
Step-by-step explanation:
The square root of a fraction is the square root of the numerator over the square root of the denominator. In this case, 1/4. The square root of 1/16 = 1/4 Ans.
The square root of 1/16 is 1/4.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
√(1/16)
This can be written as,
= √1 / √16
= 1 / 4
Thus,
1/4 is the square root of 1/16.
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help Please ill give branliest.
The juniors and seniors at a high school are ordering class shirts. The amounts ordered in each size are shown in the two-way frequency table below.
Small Medium Large X-Large Total
Juniors 65 84 68 23 240
Seniors 51 62 79 28 220
Total 116 146 147 51 460
Which statement is true about the information represented in the table?
A The percentage of Seniors who ordered a large shirt is greater than the percentage of students who ordered a large shirt who are also in the Senior class.
B The percentage of Seniors who ordered a small shirt is the same as the percentage of students who ordered a small shirt who are also in the Senior class.
C The percentage of Juniors who ordered a medium shirt is greater than the percentage of students who ordered a medium shirt who are also in the Junior class.
D The percentage of Juniors who ordered a medium shirt is less than the percentage of students who ordered a medium shirt who are also in the Junior class.
Answer:
it b
Step-by-step explanation:
To determine which statement is true, we need to calculate the percentages for each option and compare them and option c is correct.
Option A: The percentage of Seniors who ordered a large shirt is greater than the percentage of students who ordered a large shirt and are also in the Senior class. To calculate the percentage of Seniors who ordered a large shirt, we divide the number of Seniors who ordered a large shirt by the total number of Seniors:
Percentage of Seniors who ordered a large shirt =[tex](79 / 220) * 100 = 35.91[/tex]% To calculate the percentage of students who ordered a large shirt and are also in the Senior class, we divide the number of Seniors who ordered a large shirt by the total number of students who ordered a large shirt: Percentage of students who ordered a large shirt and are also in the Senior class [tex]= (79 / 147) * 100 = 53.74[/tex]% Since the percentage of students who ordered a large shirt and are also in the Senior class is greater than the percentage of Seniors who ordered a large shirt, statement A is false.
Similarly, we can calculate the percentages for the other options: Option B: The percentage of Seniors who ordered a small shirt is the same as the percentage of students who ordered a small shirt and are also in the Senior class. Percentage of Seniors who ordered a small shirt [tex]= (51 / 220) * 100 = 23.18[/tex]% Percentage of students who ordered a small shirt and are also in the Senior class [tex]= (51 / 116) * 100 = 43.97[/tex] % Since the percentages are not the same, statement B is false.
Option C: The percentage of Juniors who ordered a medium shirt is greater than the percentage of students who ordered a medium shirt and are also in the Junior class. Percentage of Juniors who ordered a medium shirt [tex]= (84 / 240) * 100 = 35[/tex]% Percentage of students who ordered a medium shirt and are also in the Junior class [tex]= (84 / 146) * 100 = 57.53[/tex]% Since the percentage of students who ordered a medium shirt and are also in the Junior class is greater than the percentage of Juniors who ordered a medium shirt, statement C is true.
Hence the correct option is C.
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FIRST GETS BRAINLIEST HURRY
Answer:
C is the answer
Step-by-step explanation:
30 Points DUE TOMORROW
Answer:
An angle is by the right angle paq is to the left
Step-by-step explanation:
hope this helped
If Karen's 45 minute lunch break ended at 12:30 P.M., what time did her lunch break begin?
Answer:
11:45 PM
Step-by-step explanation:
please mark brainliest :D
Write a polynomial in standard form with
zeros of 0 with a multiplicity of 2, and -1
Answer:
[tex]P(x)=x^3+x^2[/tex]
Step-by-step explanation:
Polynomials
Given the roots or zeros of a polynomial as x1, x2, x3, ...xn and the leading factor a, the polynomial can be expressed as:
[tex]P(x)=a(x-x_1)(x-x_2)(x-x_3)...(x-x_n)[/tex]
We are given the zeros of a polynomial as x1=0, x2=0 (multiplicity or zeros), and x3=-1, thus the polynomial is:
[tex]P(x)=a(x-0)(x-0)(x+1)[/tex]
Operating:
[tex]P(x)=a.x.x(x+1)[/tex]
[tex]P(x)=ax^2(x+1)[/tex]
[tex]P(x)=ax^3+ax^2[/tex]
Assuming a=1, the polynomial is
[tex]\mathbf{P(x)=x^3+x^2}[/tex]
Hey! I know this seems easy, but I really do need help!:(
Answer:
2b+9
Step-by-step explanation:
(7-b)+(3b+2) ---> remove parenthesis
7-b+3b+2 ---> combine like terms
2b+9
Who can solve this LAST RIDDLE???
Answer:
30 squares?
Step-by-step explanation:
You go to Wal-Mart to buy some holiday candy. You decide to buy snickers because they have a special deal on snickers. A bag
of snickers costs $3.45, but if you buy 4 or more bags, they only cost $3.00 per bag.
Create a piecewise function to represent the cost of the bags of snickers.
6
SNICKERS
Let "n" be the number of bags of snickers
and "C(n)" be the cost of all bags of snickers purchased.
The piecewise function is
C(n) - {(first option)
{ (second option)
Answer:
The piecewise function is given as follows;
[tex]\begin{cases}C(n) = \$ 3.45 \times n & \text{ if } x< 4 \\ C(n) = \$ 3.00 \times n & \text{ if } x\geq 4 \end{cases}[/tex]
Step-by-step explanation:
The given parameters are;
The cost of each bag of snickers = $3.45
The cost of each bag of sneakers when buying 4 or more bags = $3.00
Let "n" be the number of bags of snickers and "C(n)" be the cost of all the snickers purchased
The piecewise function is C(n) = {($3.45 × n) for n < 3
{($3.00 × n) for n ≥ 4
What are the zeros of fx) =-8x+ 16? Yes
Answer:
There is one Zero.
Step-by-step explanation:
Hope this helps:)
PLS ANSWER AND IF YOUR DOING IT JUST FOR POINTS ILL HAUNT YOU IN YOUR NIGHTMARES
Answer:
132
Step-by-step explanation:
Answer: 132 lb
Step-by-step explanation:
Observe the pattern here:
20 lbs * 200 = 4000 ft
50 lbs * 200 = 10,000 ft
Notice the pattern here?
Each lb covers 200 ft.
You can use this same method to find the answer.
? * 200 = 26,400 ft
Dividing by 200 on both sides, you’ll find that the answer is 132 lb.
Pls help ASAP and pls explain someone:)
Answer:
D is the answer
:D
Hi! Solve for x and y.
Answer: 14x -8= -112
Step-by-step explanation:
The coffee merchant plans to mix some fancy $6.50 per pound ground coffee called royal soil with 10 pounds of a lowly $2 per pound ground called royal peasant. How many pounds of the $6.50 per pound ground coffee should he use?
Answer and explanation:
Given:
Royal soil= $6.50 per pound
Royal peasant = $2 per pound of 10 pounds
Blend total pounds is x+10, price is unknown hence solved below
Using algebra
We find unknown x = number of pounds of royal soil
$6.50(x)+$2(10)=6.50x+20/x+10(x+10)
= 6.50x+20= 6.50x²+85x+200
Answer: its 8 :)
i hope this helps!!!!
The point-slope form of the equation of the line that passes through (-4,-3) and (12, 1) is y-1=1/4(x-12). What is
the standard form of the equation for this line?
x - 4y = 8
O x - 4y=2
4% - y = 8
O 49 - y = 2
Answer:
The answer is: x-4y=8
I NEED HELP ASAP PLEASE
Which equation represents a line parallel to the line shown on the graph?
On a coordinate plane, a line goes through (0, 8) and (2, 0).
y = 4 x minus 1
y = negative 4 x + three
y = one-fourth x + 5
y = negative one-fourth x minus 1
9514 1404 393
Answer:
y = -4x +3
Step-by-step explanation:
The given line has a "rise" of -8 for a "run" of 2, so its slope is ...
m = rise/run = -8/2 = -4
A parallel line will have the same slope, so you want to choose the equation that has an x-coefficient of -4. That equation is ...
y = -4x +3 . . . . the second choice
Answer:
y = one-fourth x minus 2
Step-by-step explanation:
What is the equation of this line? Carlos started at 1 meter and he rode for 5 meters for 2 seconds. y = mx + b
This is the last question from my questions before
Answer:
Just right the numbers they put
Answer:
see explanation
Step-by-step explanation:
Under a reflection in the line y = - x
a point (x, y ) → (- y, - x ) , thus
M(- 7, 1 ) → M'(- 1, 7 )
N(- 4, 1 ) → N'(- 1, 4 )
O(- 4, - 4 ) → O'(4, 4 )
P(- 7, - 4 ) → P'(4, 7 )
I need help I’m timed
what is the y- intercept of the linear function?
y= 1/2 x + 4
Answer: (0,4)
Step-by-step explanation:
hi could somebody help me im slow
Need HELP
Evaluate the expression
14.3-2x5²÷5
Answer:
4.3
Step-by-step explanation:
14.3 - 2 × 5² ÷ 5
14.3 -2 ×25÷5
14.3 -2 × 5
14.3 - 10
4.3
Please answer correctly !!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!
Answer: C {48,65,80}
Step-by-step explanation:
In order for it to be a right triangle it would have to be {48,64,85}
Hope this helps
Antônio, que é dono de uma queijaria artesanal, estava colocando todos os queijos produzidos, num determinado dia em prateleiras destinadas a maturação. Ao organizá-los nessas prateleiras, percebeu que apenas a metade deles caberia. Assim, os queijos que não couberam nas prateleiras foram destinados a quatro caixas de maturação. Ao colocar nove queijos em cada caixa. sobraram ainda cinco queijos, que foram distribuídos entre seus familiares. Quantos queijos foram produzidos por Antônio nesse dia?
Answer:
82 cheesesStep-by-step explanation:
Antônio, who owns an artisanal cheese shop, was placing all the cheese produced on a given day on shelves destined for ripening. When organizing them on these shelves, he realized that only half of them would fit. Thus, cheeses that did not fit on the shelves were destined for four ripening boxes. By placing nine cheeses in each box. there were still five cheeses left, which were distributed among their families. How many cheeses were produced by Antônio that day?--------------------
Placed in boxes and distributed number:
5 + 4*9 = 41Add the other half on shelves:
41 + 41 = 82Charlie wants to earn at least $33 trimming trees he charges six dollars per hour and pays nine dollars in equipment fees.
What are the possible numbers of hours Charlie could trim trees
Use t for the number of hours
write your answer as an inequality solved for t
Answer:
51
Step-by-step explanation:
PLZ HELP ANSWER ONLY LAST QUESTION PLEASE!