Answers
Related Questions
1. 2x + y = 7 and 6x + 5y = 27*
Your answer
Answers
2x-5y=-1;6x-5y=27
Solution :
{x,y} = {7,3}
System of Linear Equations entered :
[1] 2x - 5y = -1
[2] 6x - 5y = 27
Graphic Representation of the Equations :
-5y + 2x = -1 -5y + 6x = 27
Solve by Substitution :
// Solve equation [2] for the variable x
[2] 6x = 5y + 27
[2] x = 5y/6 + 9/2
// Plug this in for variable x in equation [1]
[1] 2•(5y/6+9/2) - 5y = -1
[1] - 10y/3 = -10
[1] - 10y = -30
// Solve equation [1] for the variable y
[1] 10y = 30
[1] y = 3
// By now we know this much :
x = 5y/6+9/2
y = 3
// Use the y value to solve for x
x = (5/6)(3)+9/2 = 7
Solution :
{x,y} = {7,3}
Hope I helped! :)
1.2x+y=7
x=4
Y=3
6x + 5y= 27
x=2
y=3
A writer’s last four articles and fees paid have been recorded below. What is the rate of change in the writer’s fee from writing a 700-word article to an 800-word article
Answers
Answer:
i don't think anyone an answer this without the picture below.
Step-by-step explanation:
A pool is comprised of a rectangle with 2 semicircles on the ends.
The local public pool is a rectangle with two semicircles.
The area of the rectangle is .
Using 3.14 for π and rounding to the nearest meter, the area of each half circle is m2.
The area of the surface of the pool is m2.
Answers
Answer:
Step-by-step explanation:
The formula for determining the area of a rectangle is expressed as
Area = length × width
Length = 100 m
Width = 52 m
Area of rectangle = 100 × 52 = 5200 m²
A semicircle is half of a circle
The formula for determining the area of a semicircle is
Area = 1/2 × πr²
Diameter = 52 m
Radius = diameter/2 = 52/2
Radius = 26 m
The area of each semicircle is
1/2 × 3.14 × 26² = 1061.32 m²
The area of the surface of the pool is
1061.32 + 1061.32 + 5200 = 7322.64 m²
Answer:
5200
1061
7322
hope this help
A photo of an ant in a science book is increased 515% as large as the actual size. If the ant is 16 millimeters, what is the size of the ant in the photo
Answers
Answer:
82.4 millimeters is the size of the ant in the photo
Step-by-step explanation:
In this question, we are asked to calculate the size of an ant in a science book given the actual size of the ant and the percentage increase is the size of the ant in the book.
From the question, we can identify that the actual size is 16 millimeters
Now let’s find 515% of this to know the size to which it would be magnified in the science book.
That would be;
515/100 * 16 = 82.4 millimeters
Hence, this means the ant will have a size of 82.4 millimeters in the science book
Answer:
The size of the ant in the photo is 88 mm
Step-by-step explanation:
Here, we have the percentage increase = 515 %
Size of ant = 16 millimeters in real life,
Therefore, the size of the ant in the in the photo, is given by,
[tex]\frac{16 \, mm}{100} = \frac{y\, mm}{550} = \frac{16 \times 550}{100} = \frac{y \times 100 \, mm}{100} \rightarrow 88 \, mm = y[/tex]
y = 88 mm
The size of the ant in the photo = 88 mm.
find perimeter and area of figure
Answers
7 x 25 = 175
7x 20 = 140
175 + 140 = 315
Or it could be 227.5
7 x 25 = 175
175 / 2 = 87.7
7x 20 = 140
175 + 140 = 315
As for the perimeter is 92 please tell me if I’m right
I hope this helps
Have a nice day
~ Pam Pam
What is the area of the parallelogram 1.2 cm 7cm
Answers
Answer:
8.4 cm
Step-by-step explanation:
Hope this helps!
Answer:
8.4 cm²
Step-by-step explanation:
Area of a parallelogram= base × height
= 1.2× 7 cm² = 8.4cm²
if the radius of circle r is 7 and the radius of circle s is 9, what is the ratio of the circumference of circle r to circle s
Answers
Answer:
43.96 : 56.52
Step-by-step explanation:
Circumference = 2 * pi * Radius
Circumference = Diameter * pi
Circle R's Circumference = 43.96 (7 * 2 * 3.14)
Circle S's Circumference = 56.52 (9 * 2 * 3.14)
The ratio of the circumference of circle r to s = 43.96:56.52
Cecil recivies $15 per week for complting chores. He spend $12 on a video game. What percent of his monthly allowence did cecil spend on teh video gmae
Answers
12 is 20 percent of 60
So the answer is 20%
Final answer:
Cecil spent 20% of his monthly allowance on the video game, calculated by dividing the $12 spent on the game by his $60 monthly allowance and then multiplying by 100 to get the percentage.
Explanation:
To find out what percent of his monthly allowance Cecil spent on the video game, we first need to calculate his total monthly allowance. Cecil receives $15 per week for completing chores. There are typically 4 weeks in a month, so Cecil's monthly allowance is 15 dollars/week * 4 weeks/month = $60 per month.
Next, we will calculate the percentage of his allowance that was spent on the video game. Cecil spent $12 on a video game. To find this percentage, we use the formula:
Percentage spent = (Amount spent / Total allowance) * 100
Percentage spent = ($12 / $60) * 100
Percentage spent = 0.2 * 100
Percentage spent = 20%.
Therefore, Cecil spent 20% of his monthly allowance on the video game.
WILL REWARD THE BRAINLIEST
9-18
Use what you have learned about triangles and angles to write an equation that represents each situation. Then find each of the missing angles in the triangles below.
9-19.
Additional Challenge: Use what you know about triangles and angle relationships to find the missing angles in the triangles below.
Answers
Answers and Step-by-step explanations:
9-18.
a) All the angles of a triangle add up to 180, by definition. So, we can write the expression: 30 + 115 + x = 180.
Then, we can just solve for x by subtracting 30 and 115 from both sides:
x = 180 - 115 - 30 = 35 degrees
b) Again all three angles should add up to 180, so:
x + x + x = 180 ⇒ 3x = 180 ⇒ x = 180/3 = 60 degrees
9-19.
a) These angles add up to 180:
2x + x + 30 = 180 ⇒ 3x + 30 = 180 ⇒ 3x = 150 ⇒ x = 50
2x = 50 * 2 = 100
The missing angles are 100 degrees and 50 degrees.
b) Again, these add up to 180:
x + 10 + x + 90 = 180 ⇒ 2x + 100 = 180 ⇒ 2x = 80 ⇒ x = 40
x + 10 = 40 + 10 = 50
The missing angles are 50 degrees and 40 degrees.
Hope this helps!
Answer:
9-18
a)
x = 180 - (115 + 30) = 180 - 145 = 35°
b)
3x = 180 => x = 180 : 3 => x = 60°
9-19
a)
180 = x + 2x + 30
180 - 30 = 3x
3x = 150
x = 50°
b)
180 = x + 10 + x + 90
180 - 10 - 90 = 2x
2x = 80
x = 40°
Fred has saved 3 quarters from washing cars how many cents does Fred have
Answers
Answer:75 cents
Step-by-step explanation:
one quarter is equal to 25 cents and since you have 3 of them you multiple 25 times 3 and get 75.
Fred has 3 quarters, and since each quarter is worth 25 cents, he has a total of 75 cents from washing cars.
Fred has saved 3 quarters from washing cars, and we need to determine how many cents he has. In U.S. currency, one quarter is equivalent to 25 cents. To find out the total number of cents Fred has, we can perform the following multiplication:
25 cents × 3 quarters = 75 cents
Therefore, Fred has a total of 75 cents.
Jeremy caught 8 fish in a contest.
The mean weight of the fish was 4.3125 kg.
He forgot to make his own record of the weight of the last fish,
but the first 7 were: 4.3 kg, 5.3 kg, 6.8 kg, 2.6 kg, 3.2 kg, 4.4 kg and 4.8 kg.
What was the weight of the last fish?
kg [2]
Answers
Answer:
Step-by-step explanation:
4.3 kg + 5.3 kg + 6.8 kg + 2.6 kg + 3.2 kg + 4.4 kg + 4.8 kg
4.3+5.3+6.8+2.6+3.2+4.4+4.8
= 31.4 ÷ 7
= 4.4857142857
Approx. 4.5kg
In a class of 666, there are 444 students who are secretly robots.
If the teacher chooses 222 students, what is the probability that neither of them are secretly robots?
Answers
Answer:
1/15
Step-by-step explanation:
2/6 for the first one the first the second is 1/5, so 2/6=1/3, so 1/3 x 1/5 = 1/15 your answer is 1/15
Helga signs up to coach hockey. she wants to make at least $775 during the season. she gets $200 at the start of the season and $50 for each practice session she has. how many practice sessions does Helga need to have this season?
Answers
Answer:
12
Step-by-step explanation:
Well 775-200 = 575
575÷50= 11.5
round up because you cannot got to a half of practice.
So 12 practices.
Find the domain of the following function:
y = x^3 − 8
_________
x^2 + 9
Select the appropriate response:
A) 483xy
B) domain: all values of y
C) all values of x
D) Not possible to solve
Answers
Answer:
C) all values of x
Step-by-step explanation:
Domain is the set of values of input 'x'
Since the denominator is not 0 for any x, there's no domain restriction
Which of the following statements are true about the angles in the figure? Select all that apply.
∠X and ∠Z are vertical angles.
∠X and ∠Y are a linear pair.
∠W and ∠Z are supplementary.
∠Y and ∠Z are supplementary.
∠W and ∠X are adjacent.
Answers
Answer:2 , 3 , and 5 would be your answer
Step-by-step explanation:
Answer:
B,C,E
Step-by-step explanation:
so the guy above me is right
ABCD is a square. BD = 21.21 in. Find the perimeter to the nearest whole number.
Answers
Answer:
60 in
Step-by-step explanation:
BD² = s² + s²
21.21² = 2s²
s² = 224.93205
s = 14.997734829
Perimeter = 4s
= 59.990939316
A silver bracelet has a mass of 52.45g and volume of 5cm³ find the density of silver bracelet
Answers
Answer:
10.49 g/cm³
Step-by-step explanation:
d = m/V = 52.45g/5cm³ = 10.49 g/cm³
Answer:
10.49g/cm3
Step-by-step explanation:
mass=52.45g
volume=5cm3
density=mass divided by volume
52.45 divide by 5=10.49
whats 11/12 of a full rotation?
Answers
Pls mark Brainliest.
Answer:
330°
Step-by-step explanation:
A full rotation is 360°. Saying 11/12 of a full rotation is equivalent to saying 11/12 * 360°, which equals 330°.
We have that for the Question "whats 11/12 of a full rotation?" it can be said that 11/12 of a full rotation is
[tex]X=330 \textdegree[/tex]
From the question we are told
whats 11/12 of a full rotation?
Generally the equation for the Statement is mathematically given as
[tex]x=\frac{11}{12}[/tex]
Where
360° signifies full rotation
Therefore
11/12 of a full rotation is
[tex]\frac{11}{12}*360[/tex]
[tex]X=330 \textdegree[/tex]
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Mrs. Maldonado has $3,000 she wants to invest for the next 4 years. Her credit union offers a 5.96% interest rate compounded yearly, while a new bank will pay a 7.27% annual simple interest on her investment. Assume Mrs. Maldonado makes no additional deposits or withdrawals over the 4-year period.
Step 2: Use the correct formula to calculate the interest earned for the offer at the bank.
Answers
3972.95
Jake makes 9 loaves of olive bread. He uses 30 grams of olives in each loaf. He started with 1 kilograms of olives. How many grams of olives does jake have left?
307 grams
730 grams
269 grams
961 grams
Answers
Jake has 730 grams left.
Step-by-step explanation:Lets start by converting the kilograms to grams. Kilos to Base is x1000
So he started with 1000 grams of olives.
How much olives did he use?
9*30=270
SO the answer is 1000-270=730
The vertex form of h(x) = x2 – 14x + 6 is h(x) = (x -
)2-
Answers
Answer:
(X-7)2-43
Step-by-step explanation:
Answer:
7
43
Step-by-step explanation:
Please help me with these Square Root problems. Part 2. Please Show and check the work.
[tex]5. \sqrt{x+4} = 3 - \sqrt{x} \\\\6. \sqrt{x+4} =3 + \sqrt{x} \\\\7. \sqrt{x+ 3} = \sqrt{5x+6} - 3\\\\8. \sqrt{2x+1} = x - 1[/tex]
Answers
Answer:
5. 25/36
6. 25/36
7. -3/4 or 6
8. 0 or 4
Step-by-step explanation:
5. Square both sides: x + 4 = 9 - 6[tex]\sqrt{x}[/tex] + x
Subtract x from both sides and subtract 9 from both sides:
-5 = -6[tex]\sqrt{x}[/tex]
Square both sides again: 25 = 36x
Divide both sides by 36: x = 25/36
6. Square both sides: x + 4 = 9 + 6[tex]\sqrt{x}[/tex] + x
Subtract x and 9 from both sides: -5 = 6[tex]\sqrt{x}[/tex]
Square both sides: 25 = 36x
Divide both sides by 36: x = 25/36
7. Square both sides: x + 3 = 5x + 6 - 6[tex]\sqrt{5x+6}[/tex] + 9
Add 6[tex]\sqrt{5x+6}[/tex] to both sides and isolate it: 6[tex]\sqrt{5x+6}[/tex] = 4x + 12
Divide both sides by 2 and then square both sides again:
3[tex]\sqrt{5x+6}[/tex] = 2x + 6
9 * (5x + 6) = 4x^2 + 24x + 36
45x + 54 = 4x^2 + 24x + 36
4x^2 - 21x - 18 = 0
Factorize: (4x + 3)(x - 6) = 0 ⇒ x = -3/4 or x = 6
8. Square both sides: 2x + 1 = x^2 - 2x + 1
Move all the terms to one side and combine like terms: x^2 - 4x = 0
Factorize: x(x - 4) = 0 ⇒ x = 0 or x = 4
Hope this helps!
Answer:
5. x = 25/36
6. No real solutions
7. x = 6
8. x = 4
Step-by-step explanation:
5. sqrt(x + 4) = 3 - sqrt(x)
Square both sides
x + 4 = 9 - 6sqrt(x) + x
6sqrt(x) = 5
sqrt(x) = 5/6
x = 25/36
6. sqrt(x + 4) = 3 + sqr(x)
x + 4 = 9 + 6sqrt(x) + x
6sqrt(x) = -5
sqrt(x) = -5/6
Not possible. A + square root can not be negative
7. sqrt(x + 3) + 3 = sqrt(5x + 6)
Square both sides
x + 3 + 6sqrt(x + 3) + 9 = 5x + 6
6sqrt(x + 3) = 4x - 6
3sqrt(x + 3) = 2x - 3
Square both sides
9(x + 3) = 4x² - 12x + 9
4x² - 21x - 18 = 0
Using quadratic formula:
x = [21 +/- sqrt(21² - 4(4)(-18)]/(2×4)
x = [21 +/- 27]/8
x = 6, -¾
x = -¾ is rejected because it doesn't satisfy the initial equation
8. sqrt(2x + 1) = x - 1
2x + 1 = (x - 1)²
2x + 1 = x² - 2x + 1
x² - 4x = 0
x(x - 4) = 0
x = 0, 4
0 is rejected because it doesn't satisfy the initial equation
Twin brothers, Mike and Mark, are both offered jobs at grocery stores. Mike is offered a job at Fresh Foods making $10 per hour. Mark is offered a job at Groovy Groceries making $8 per hour plus a one-time hiring bonus of $100. Each twin believes he has been offered the better job. It's your responsibility to determine which brother has been offered the better job.
Answers
Answer: Mike offer is the best.
Step-by-step explanation:
Assuming he work for 30hrs per week in a month he gets
30hrs x 10 = $300 x 4 = $1200
If Mark work 30hrs per week he gets
30hrs x $8 = $240 x 4 = $960 + Bonus $100 = $1,060
Therefore, Mike makes more money.
Consider the steps to solve the equation. 2 5 ( 1 2 y + 20 ) − 4 5 = 9 20 (2y − 1) Distribute: 1 5 y + 8 − 4 5 = 9 10 y − 9 20 What is the next step after using the distributive property? Use the multiplication property of equality to isolate the variable term on one side of the equation. Use the multiplication property of equality to isolate the constant on one side of the equation. Combine the like terms on the right side of the equation. Combine the like terms on the left side of the equation.
Answers
Answer: It’s D
Step-by-step explanation:
Just took assignment
Answer:
-DStep-by-step explanation:
I got 100% on this assignmenta cereal box has a length of 8 inches, a width of 1.75 inches, and a height of 12.25 inches. What is the volume of the cereal box?
Answers
Answer:
171.5
Step-by-step explanation:
Answer:
The answer to your question is Volume = 171.5 in ³
Step-by-step explanation:
Data
length = 8 in
width = 1.75 in
height = 12.25 in
To find the volume of this box, look for the formula to get the volume of a rectangular prism, substitute the values and simplify.
Formula
Volume = length x width x height
Substitution
Volume = 8 x 1.75 x 12.25
Simplification
Volume = 171.5 in ³
During a game, a basketball team scored 38 points worth of two-pointers, 33
points worth of three-pointers, and 8 points worth of free throws. How many
shots did the basketball team make during the game?
Answers
Answer:
185 Points
Step-by-step explanation:
38 x 2 = 76
33 x 3 = 99
8 x 1 = 8
78 + 99 + 8 = 185
Work Shown:
"38 points worth of two-pointers" means 38/2 = 19 two point shots were made.
"33 points worth of three-pointers" means 33/3 = 11 three point shots were made
"8 points worth of free throws" means 8/1 = 8 free throws were made
In total, 19+11+8 = 38 shots were made
Express your answer in the form (a + bi)
(21 + 2i) + (13 + 8i) =
Answers
Answer:
The answer to your question is (34 + 10i)
Step-by-step explanation:
Data
(21 + 2i) + (13 + 8i) =
To solve this operation, just sum up the whole numbers and get a result then, sum up the imaginary numbers and get another result. Finally, write the result.
-Whole numbers 21 + 13 = 34
-Imaginary numbers 2i + 8i = 10i
Result (34 + 10i)
Answer:
34 +10i
Step-by-step explanation:
( 21 + 2i) + (13 + 8i) =
Add the real numbers
21+13 = 34
Add the imaginary numbers
2i+8i = 10i
The complex number is the real plus the imaginary number
34 +10i
Find the distance between (2, -75) and (10, 235).
Answers
Answer:
2
Step-by-step explanation:
Answer:
Use the distance formula to determine the distance between two points.
Exact Form:
2 √ 24041
Decimal Form:
310.10320862
Two new puzzle apps have 2,000 downloads on their first days. Jigsaw Junction
is downloaded 10,000 times each day after that, while Impossible Puzzles
double in total number of downloads each day. How many days will it take for
Impossible Puzzles to have more downloads than Jigsaw Junction?
5 Days
O 6 Days
7 Days
8 Days
Answers
Answer: 6 days
Step-by-step explanation: 6 days= 62,000 for jigsaw junction and 64,000 for impossible puzzles
i hope this helps
Impossible Puzzles will have more downloads than Jigsaw Junction in 1 day.
Explanation:To find out how many days it will take for Impossible Puzzles to have more downloads than Jigsaw Junction, we need to set up an equation and solve for the number of days.
Let's assume that the number of downloads for Impossible Puzzles on the first day is x. Since it doubles in total number of downloads each day, the number of downloads on the second day would be 2x, on the third day would be 4x, and so on.
On the other hand, Jigsaw Junction is downloaded 10,000 times each day after the first day. So, for n number of days, the number of downloads for Jigsaw Junction would be [tex]10,000 * n.[/tex]
We want to find the number of days when the number of downloads for Impossible Puzzles is greater than the number of downloads for Jigsaw Junction. So, we can set up the equation [tex]4x > 10,000n.[/tex]
To find the value of x, we can substitute 2,000 (the number of downloads on the first day for Impossible Puzzles) into the equation: [tex]4(2000) > 10,000n.[/tex]
Putting all the information together, we can set up the equation [tex]8,000 > 10,000n.[/tex]
To solve for n, we can divide both sides of the equation by[tex]10,000: 8,000/10,000 > n[/tex]. This simplifies to 0.8 > n.
Since n represents the number of days, we round up to the nearest whole number. Therefore, it will take 1 day for Impossible Puzzles to have more downloads than Jigsaw Junction.
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An oblique prism is created using rohmbuses with the edge lengths of 25 units. The area of one rhombus is 600 square units. The perpendicular distance between the bases is 24 units.
What is the volume of the prism?
Answers
Given:
The length of each edge of rhombus = 25 unit
The area of one rhombus is 600 square units.
The perpendicular distance between the bases is 24 units.
To find the volume of the prism.
Formula
The volume of the prism
[tex]V = Bh[/tex]
where, B is area of one rhombus
h be the height.
Now,
Putting, B = 600 , h = 24 we get,
[tex]V = (600)(24)[/tex] cube unit
[tex]or, V = 14400[/tex] cube unit
Hence,
The volume of the prism 14400 cube unit.