Answer:
x = 4 / 3, y = 7 / 3
Step-by-step explanation:
We are given the following system of equations;
{ 7x - y = 7, ⇒ Let us multiply the first equation by 2,
x + 2y = 6 }
2 * ( 7x - y = 7 ) ⇒ 14x - 2y = 14 ⇒ Now add the two equations
+ x + 2y = 6 + x + 2y = 6
14x + x = 14 + 6 ⇒ Simplify
15x = 20,
x = 4 / 3 ⇒ Now substitute this value of x into the first equation to solve for the value of y,
7 * ( 4 / 3 ) - y = 7 ⇒ Simplify,
28 / 3 - y = 7,
y = 7 / 3
Solution; x = 4 / 3, y = 7 / 3
5. Ms. Peregrino is using her cards to call on
students in period 7. She has 34 students.
She has 2 girls with the same name. What is the probability of Ms.peregrino calling in those girls with the same name one after the other?
Answer: 2/34
Step-by-step explanation: there are 2 sticks with the same name and the total number of students are 34 so its 2/34
Hurry workingon it now. Only answer if you know very important and have to pass. ( I posted a picture of everything. Will Mark Brainliest.
Answer:
Bottom right
Explanation:
It shows the trend of the graph most effectively, this is also called the line of best fit. When making/looking for the line of best fit you want to follow the trend and have as close to the same amount of point on top & bottom of the line.
In North Carolina, the Tar River is 346 miles long. The Neuse River is 275 miles long. How much longer is the Tar River than the Neuse River?
Answer:
71
Step-by-step explanation:
You subtract both numbers.
Answer:
71 miles longer
Step-by-step explanation:
Subtract 275 from 346
The radius of a grapefruit is 5/2 inches. What is the approximate surface area ? Use 22/7 for π.
Answer:
19.6 in^2 approximately.
Step-by-step explanation:
Assume it's close to being a sphere.
So the approximate surface area
= 4 pi r^2
= 4 * 22/7 * (1/2* 5/2)^2
= 19.6 in^2.
Answer:
550/7
Step-by-step explanation:
Does choosing a blue marble represent the complement event of choosing a red marble? Explain.
Answer:
No, the probability of choosing a red marble is not the complement of choosing a blue marble.
P(red) + P(blue) = 3/5, not 1.
The number of blue and red marbles does not add to the total number of outcomes.
There are other marbles besides red ones and blue ones.
Step-by-step explanation:
i got it right.
Answer:
The complementary event for choosing a red marble is choosing a blue or purple. The total number of marbles is 5. The probability of choosing a red marble is 1/5, and the complement would be 4/5. That is not the same as choosing a blue marble.
How many 4-digit numbers are multiples of at least one of these two numbers: 2, 5
Answer:
There is a total of 5,400 4 digit numbers that are multiples of 2 and/or 5.
Step-by-step explanation:
Hope this helps! :)
The length of the rectangle is 3 feet less than twice its width.
The area of the rectangle is 35 ft? . What is the length of the
rectangle?
Answer:
I think it’s 14.5 but if I am wrong correct me plz
Step-by-step explanation:
2/5 of it is 22.\
I need help PLS
Answer
55
Step-by-step explanation:
2
5
(22)
=(
2
5
)(
22
1
)
=
(2)(22)
(5)(1)
=
44
5
(Decimal: 8.8)
which will give 55
PLease mark brainllest!!!!!!!
Answer:
2 divided by 5 = 0.4
22/0.4=220/4=55
55 is the number. Hope this helps.
Step-by-step explanation:
I need help uwuwuwuwuwuauauuwuwuauaua
The answer is B
35+50+35+20=140
175-140= 35
How many extraneous solutions does the equation below have? StartFraction 9 Over n squared + 1 EndFraction = StartFraction n + 3 Over 4 EndFraction 0 1 2 3
Answer:
a. 0
Step-by-step explanation:
hope this helps!
The solutions to the equation n³+3n²+n-33=0 are n=-11, n=-3, and n=1.
What is an equation?In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.
The solution of an equation is the set of all values that, when substituted for unknowns, make an equation true.
Given that, 9/(n²+1) = (n+3)/4.
Here, 9×4=(n²+1)×(n+3)
36=n²(n+3)+1(n+3)
36=n³+3n²+n+3
n³+3n²+n+3-36=0
n³+3n²+n-33=0
The equation n³+3n²+n-33=0 can be solved by factoring. The factors of -33 are -1 and 33. Since the coefficient of the n³ term is 1, this means that n-1 and n+33 are factors of the equation.
Dividing both sides of the equation by n-1, we get:
n²+3n+33/(n-1)=0
Factorizing the numerator, we get:
(n+11)(n+3)=0
Solving this equation, we get n=-11 and n=-3.
Therefore, the solutions to the equation n³+3n²+n-33=0 are n=-11, n=-3, and n=1.
To learn more about an equation visit:
https://brainly.com/question/14686792.
#SPJ2
Martin has 38 dollars.raymond had x fewer dollars than Martin . Choose the expression that shows how much money Raymond has
Answer:
38-x=raymond
Step-by-step explanation:
if m has 38 and raymond has let's say 10 less you would put 38-10=raymond. Its the same thing with this problem but with variables. Tell me if this doesn't make sense.
The expression that shows how much money Raymond has is 38 - x.
What is an expression?An expression is a number, or a variable, or a combination of numbers and variables and operation symbols.
Now it is given that,
Martin has 38 dollars
Raymond had x fewer dollars than Martin
Converting them into numerical expression.
So, x fewer than 38 = 38 - x
Thus, Raymond had = 38 - x
So, this is the required expression.
Thus, the expression that shows how much money Raymond has is 38 - x
To learn more about expression :
brainly.com/question/11568837
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HELP WITH WORD PROBLEM - You want to find the probability that three out of five babies are boys. You decide to toss coins to simulate the problem. How many coins would you use? Explain.
Answer:I would think five one for each baby
Step-by-step explanation:
Sorry If i am wrong
Which represents the inverse of the function f(x)=4x?
Answer:
[tex]h(x) = \frac{1}{4}x[/tex]
Step-by-step explanation:
Suppose h is the inverse of f then
f(x) = y ⇔ h(y) = x
f(x) = y ⇔ 4x = y ⇔ x = y/4
and since x = h(y) then h(y) = y/4
then we can write :
[tex]h(x) = \frac{x}{4}[/tex]
______________________
:)
What are the solutions to the system of equations? {y=x2−4x+8y=2x+3
Answer:
1) C 2) (-2,0) 3) 4) 5) c )S={(0,3)} 6) (0,2) 7) 8) Missing graph 9) Vertical line (check below) 10) B 11)
Step-by-step explanation:
1) Solving by the Addition/Elimination Method. Firstly, let's reduce one variable by making some algebraic adjustments and then adding it up:
2) Solving by Substitution Method. Where y=x+2 is plugged in the 2nd equation.
3) Solving it, again, by the Substitution Method due to the I equation form:
4) By the Addition Method
5) To use the graph method to solve the system of Linear equations is possible by graphing each equation on the Cartesian Plane.
Check the graph below, this system has only one solution.
c)S={(0,3)}
6) Solving y=-1/3x+2 y=x+2
(Check the graph below)
A) A) (0, 2)
7) Solving by Substitution Method:
8) Missing graph
9)
Check the graph below its answer
10) Solving by the Addition Method
11) Sorry, missing graph for the question.
12) Sorry, missing graph for the question.
13) D Check the graph below
14) Sorry, missing graph for the question.
help me you don’t have to explain!!
Answer:
option b ................
Can someone pls help
Answer:
a) At what time does Bethan arrive home from school?
The answer would be C) 15:30
b) What distance does Siobhan travel each day when going to school and back?
The answer would be D) 16km
Step-by-step explanation:
Sal is tiling his entryway. The floor plan is drawn on a unit grid. Each unit length represents 1 foot. Tile costs $1.85 per square foot. How much will Sal pay to tile his entryway? Round your answer to the nearest cent.
Answer:
$80.48
Attached is the image of the entry way
Step-by-step explanation:
Given that each unit length represents 1 foot.
To find the area of the shape shown in the attached image, we need to divide the shape into two parts at about 4 ft from the bottom.
The top shape is a trapezoid of base length 4 ft, top length 7 ftand height 5 ft, while the bottom shape is a parallelogram with one side equal to 4 ft and height 4 ft
Area of a Trapezium = 1/2 × (a+b)h
a = 4ft, b= 7ft, h = 5ft
Substituting the values;
Area of trapezoid = 1/2 × (7 + 4)x 5
Area of trapezoid = 27.5 ft^2
Area of a parallelogram = length × height
Length = 4 ft, height = 4 ft
Substituting the values;
Area of parallelogram = 4 x 4
Area of parallelogram = 16 ft^2
Total area = area of trapezium + parallelogram
Total area = 27.5 + 16 = 43.5 ft^2
Cost per square foot = $ 1.85
Total cost = cost per square foot × area
Total cost = $1.85 per square foot × 43.5ft^2
Total Cost = $80.48
Answer:
Sal will pay $ 80.48 to tile his entryway.
Step-by-step explanation:
Separate the entryway into simpler shapes: a trapezoid and a parallelogram.
Find the area of the simpler figures. Count units to find the dimensions.
Trapezoid
A = 1/ 2
h(b₁ + b₂)
A = 1/ 2
(5)(4 + 7)
A = 1/ 2
(5)(11)
A = 27.5
The area of the trapezoid is 27.5 ft
2 .
Parallelogram
A = bh
A = 4 · 4
A = 16
The area of the parallelogram is 16 ft
2 .
Find the area of the entryway.
A = 27.5 + 16
A = 43.5
The area of the entryway is 43.5 ft
2 .
Calculate how much Sal will pay to tile his entryway.
Area · Cost per foot = Total Cost
43.5 · $1.95 = $84.83
Sal will pay $84.83 to tile his entryway.
Surface area of a cone in terms of pi
I will give you the brainliest if you answer asap please
Answer:
168
Step-by-step explanation:
You just need to triple the answer to get 168.
find the missing letter N if the width is 2ft and the area equal 28 sq ft
Answer:
Step-by-step explanation:
Area = 28 Sq.ft
length * width = 28
2 * n = 28
Divide both sides by 2
2n/2 = 28/2
n = 14 ft
Jackson at the collectibles fair. He has exactly $8 and will purchase a collectible from a vendor for $5. What percent of his money will Jackson spend on the purchase?
Answer:
62.5%
Step-by-step explanation:
Total money with Jackson = $8
Money spent for buying collectible = $5
__________________________________________________
Percentage of any number A with respect to another number B is calculated by multiplying fraction A/B with 100
Numerically A as percentage of b will be expressed as (A/B)100 %
It means that if there are 100 items instead of B item then what will be the value of A.
______________________________________________________
Percentage of money spent = (Money spent for buying collectible /Total money with Jackson)
Substituting the total money and money spent for buying collectible
we have
Percentage of money spent = 5/8 * 100 = 0.625*100 = 62.5%
Thus, 62.5% percent of his money will Jackson spend on the purchase of collectible.
The base of a rectangular prism has an area of 26.25, and the height of the prism is 4.5. What is the volume? Round to the nearest hundredths.
The right answer is 118.
Look at the attached picture
Hope it will help you....
Good luck on your assignment.
Answer:
[tex]v = 118.25[/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!
Which line segment is a radius of circle A?
AB and AC ................................
math question below
Answer: The package reaches the ground in
4.67 s
and hits the ground with a speed of
33.8 m/s
Answer:
3m/s or option 1
Step-by-step explanation:
Given,
Height(h)=90m
time(t)=30s
Speed(v)=?
Now,
Speed(v)=distance/time
v=height/time(Since,height here is the distance covered by the balloon)
v=90/30
v=3
Unit of speed is m/s
Therefore,v=3m/s
By the way,this is a question related to physics
2 Points
Which of the following is an advantage to using graphs and diagrams?
A. They sometimes give you too much information so you must
decide what is relevant to the problem,
O B. They help to visualize the problem.
C. They are always the most useful in any problem.
O D. They are best used alone.
SUB
Answer:
They help to visualize the problem
Step-by-step explanation:
Gabrielle is going to shop with the $150.00 that she earned from doing chores. She wants to save 20% of her money to put into a savings account. She buys a shirt for $42.00 and a pair of pants for
$70.00, with 8% sales tax on both items. Does Gabrielle still have the amount of money she planned to put into her savings account?
no she will not have have the amount she planned on putting into her savings because she has 29.03 left over
please help with sis i give ponts
Answer:
x +5
Step-by-step explanation:
x² + 10x + 25 = x² + 5x + 5x + 5*5
= x(x + 5) + 5(x + 5)
= (x + 5) (x +5)
[tex]\frac{x^{2}+10x+25}{x+5}=\frac{(x+5)(x+5)}{(x+5)}\\\\=x+5[/tex]
Answer:
x^3+35 over z+5
Step-by-step explanation:
how do u simplify this this is all i can do
If you answer this correct I mark you Brainelst:
Martha has eighteen marbles see loses 90 and then throws away her dignity whats the the answer? PS: you have to answer the dignity part to! If not then its wrong!
Answer:
72 and dignity is not important
Step-by-step explanation:
I think
Add "two" plus "eight" and type the numeric (integer) answer here:
Answer:
10
Step-by-step explanation:
When you add 2 integers with the same sign, you leave the signs out and add there absolute values. Example:
+2 + +8= I2I + I8I
I hope you learned from this answer.
need answer as soon as possible
Answer:
I(n)=(n4)+−5n3+45n2−70n+2424⋅δ2(n)
−3n2⋅δ4(n)+−45n2+262n6⋅δ6(n)+42δ12(n)
+60n⋅δ18(n+35n⋅δ24(n)−38n⋅δ30(n)
−82n⋅δ42(n)−330n⋅δ60(n)−144n⋅δ84(n)
R(n)=n4−6n3+23n2−42n+2424
+−5n3+42n2−40n−4848⋅δ2(n)−3n4⋅δ4(n)
+53n2+310n12⋅δ6(n)+49n2⋅δ12(n)
+32n⋅δ18(n)+19n⋅δ24(n)−36n⋅δ30(n)
−50n⋅δ42(n)−190n⋅δ60(n)−78n⋅δ84(n)
−48n⋅δ90(n)−78n⋅δ120(n)−48n⋅δ210(n)
Step-by-step explanation:
