Find the values of x and y.
X is a right angle so 90 degrees.
The B will be equal to C so B is 47 degrees.
The Y is 180 degrees - X - C so Y is 43 degrees.
Hope this helps.
You mix 1/3
quart of blue paint for every 1/2
quart of red paint to make 2 1/2
quarts of purple paint. How much blue paint and how much red paint do you use?
Answer:
1 quart blue + 1 1/2 quart red
Step-by-step explanation:
Given:
Ratio of blue paint : red paint = 1/3 : 1/2
simplifying this ratio into whole numbers by multiplying both sides by 2 and 3, we get:
(1/3) x (3x2) : (1/2) x (3x2)
2 : 3
From this we can determine the fractions of red and blue paint used in any total purple mix
fraction of blue paint = 2/(2+3) = 2/5 of purple mix
fraction of red paint = 3/(2+3) = 3/5 of purple mix
we are given that we want to make 2 1/2 (= 5/2) quarts of purple paint
hence
amount of blue paint
= fraction of blue paint in purple mix x total amount of purple paint
= (2/5) x (5/2) = 1 quart
amount of red paint
= fraction of redpaint in purple mix x total amount of purple paint
= (3 /5) x (5/2) = 3/2 quart = 1 1/2 quart
What is 7.65x10with 3 exponent
Answer:
Step-by-step explanation:
7.56 × 10^3
= 7.56×1000
= 7560
Answer:
447,697.125
Step-by-step explanation:
multiply 7.65 by 10
76.5
76.5 to 3rd power is just 76.5 times 76.5 times 76.5
answer is 447,697.125
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Given the function ƒ(x) = 3x + 5, find ƒ(4) and x such that ƒ(x) = 38.
Select one:
A. 17; 11
B. 20; 13
C. 12; 15
D. 24; 9
Answer:
A. 17 , 11
f(4)=3(4) + 5
=17
f(x)= 38
38 = 3x + 5
38 - 5 = 3x
33 = 3x
x =11
What is 100% written as a decimal?
O
0.01
O 0.1
O
1
O
10
Answer: 1.0
Step-by-step explanation: Since a percent is a ratio that compares a number to 100, think of 100% as the ratio 100/100 or 100 divided by 100.
Now, dividing a number by 100 moves the decimal point two places to the left so 100 divided by 100 will move the decimal point two places to the left which will gives us 1.0 or simply just 1.
So 100% can be written as the decimal 1.0.
Answer:
1
Step-by-step explanation:
Take 100 and add a decimal point at the end -> 100.Move the decimal over [left] two decimal pointsPut your numbers together and get rid of the 0'sYou get 1Byeeee, get a hundred!
4. Find the slope of the line between the points (9,-12) and (5,4)
The slope of the line is -4.
Work is provided in the image attached.
Answer:
[tex]m=-4[/tex]
Step-by-step explanation:Using the Slope Formula:
[tex]m= \frac{4+12}{5-9}=\frac{16}{-4} =-4[/tex]
In the equation 3/4y+1/2=3 1/4, the fractional coefficient is
Answer:
[tex]\frac{3}{4}[/tex]
Step-by-step explanation:
Given equation: [tex]\frac{3}{4}y + \frac{1}{2} = 3 \frac{1}{4}[/tex]
In the given equation, [tex]\frac{3}{4}[/tex] is a coefficient and y is the variable.
coefficient is a constant number or quantity multiplied to a variable in an algebric expression. Like in the above equation [tex]\frac{3}{4}[/tex] is a coefficient and y is the variable. We use term variable for y as its value may vary or change. If variable does not have any coefficient in any expression then in that case, we consider 1 as coefficient, for example: [tex]x+4[/tex], here variable have 1 as coefficient.
Hence, the fractional coefficient is [tex]\frac{3}{4}[/tex].
Final answer:
The fractional coefficient in the equation 3/4y+1/2=3 1/4 is 3/4.
In the given equation, the fractional coefficient is 3/4, which is the fraction that multiplies the variable y.
Explanation:
The fractional coefficient in the equation 3/4y+1/2=3 1/4 is 3/4.
In the equation 3/4y + 1/2 = 3 1/4, the fractional coefficient refers to the fraction that is multiplied by the variable y.
In this case, the coefficient is 3/4.
When working with algebraic expressions and equations, understanding how to identify and manipulate coefficients is essential for problem-solving.
The student's query seems to be aimed at identifying the coefficient of the variable in the equation. In algebra, fractions like 3/4 can be seen as coefficients when they are directly next to a variable.
No unit cancellations are needed here as the question pertains to pure algebra and not to unit conversions or applied mathematics.
Suppose you have $30 to spend on a bag is tootsie rolls that are worth $3 and bags of lolli-pops worth $5.If you have to use all of their money , What combinations of candy bags can they buy ? Construct a liner equation and find /explain the y -intercept,x-intercept ,and slope
Answer:
Part a) [tex]3x+5y=30[/tex]
Part b) see the explanation
Part c) see the explanation
Step-by-step explanation:
Part a) Construct a liner equation
Let
x ----> the number of bags of tootsie rolls
y ----> the number of bags of lolly-pops
we know that
The number of bags of tootsie rolls bought multiplied by their price ($3) plus the number of bags of lolly-pops bought multiplied by their price ($5) must equal $30
so
The linear equation that represent this problem is
[tex]3x+5y=30[/tex]
Part b) Find the intercepts
Find the y-intercept
The y-intercept is the value of y when the value of x s equal to zero
In this context, the y-intercept is the number of bags of lolly-pops that i can buy when the number of bags of tootsie rolls is equal to zero
For x=0
[tex]3(0)+5y=30[/tex]
[tex]y=6[/tex]
The y-intercept is the point (0,6)
so
I can buy 6 bags of lolly-pops and 0 bags of tootsie rolls
Find the x-intercept
The x-intercept is the value of x when the value of y s equal to zero
In this context, the x-intercept is the number of bags of tootsie rolls that i can buy when the number of bags of lolly-pops is equal to zero
For y=0
[tex]3x+5(0)=30[/tex]
[tex]x=10[/tex]
The x-intercept is the point (10,0)
so
I can buy 10 bags of tootsie rolls and 0 bags of lolly-pops
Part c) Find the slope
we have
[tex]3x+5y=30[/tex]
isolate the variable y
[tex]5y=-3x+30[/tex]
[tex]y=-\frac{3}{5}x+6[/tex]
The slope is m=-3/5 ---> is negative because is a decreasing function
That means ---> For every three less lollipops you get, you can have 5 more tootsie rolls
An arborist examined trees in an orchard to see if they were infected with a virus. Out of 90 trees, 40% had the virus. How many trees were infected with the virus?
Answer:
36 trees were infected with the virus.
Step-by-step explanation:
Given:
Total number of trees = 90
Percentage of tree that had virus 40%
To find:
Number of tress that were infected by virus = ?
Solution:
Let the number trees that was affected by the virus be X.
then
X = 40% of 90
X = [tex]\frac{40}{100} \times 90[/tex]
X = [tex] 0.4 \times 90[/tex]
X= 36
ABCD is a trapezium in which AB is parallel to DC, bd is a diagonal and E is the mid point of AD a line is drawn through E parallel to AB intersecting BC at F show that F is the mid point of BC
Answer:
F is the mid point of BC. (Proved)
Step-by-step explanation:
See the attached diagram.
Given AB ║ CD and EF is drawn to be parallel to AB.
So, EF ║ AB ║ CD .......... (1)
Now, in Δ ABD, E is the midpoint of AD and EG is parallel to AB.
So, G must be the midpoint of BD.
Now, in Δ BCD, G is the midpoint of DB and GF is parallel to CD. {From relation (1)}
So, we can write F is the midpoint of BC. (Proved)
[Since we know the theorem that if we joint the midpoints of two sides of a triangle then the line formed will be parallel to the third side.]
school spirit club wants to raise money by selling t-shirts. one local company charges a fixed fee of $75 for creating the design and $5 for each shirt that they print. Write an equation describing the spirit club's income if they sell each t-shirt for $8
Answer:
The profit = $(3x - 75) where x = number of t-shirts sold
Step-by-step explanation:
School spirit club wants to raise money by selling t-shirts. one local company charges a fixed fee of $75 for creating the design and $5 for each shirt that they print.
We have to find the club's income if they sell each t-shirt for $8.
Let the number of t-shirts that the club sell be equal to x.
So the cost of making x t-shirts = 75 + 5x
If the club sells x t-shirts , then the money they earn = 8x
Profit = selling price - cost price
= 8x - (75 + 5x)
= $(3x - 75)
The club also needs to sell at least 25 t-shirts to make a profit and from then on makes a profit of $3 on each t-shirt they sell.
When 2 5/8 is written as an improper fraction in lowest terms, what is the numerator of the fraction?
A. 10
B. 16
C. 18
D. 20
E. 21
Option E
The numerator of fraction is 21
Solution:[tex]2\frac{5}{8}[/tex] is to be written as improper fraction in lowest terms
To find: numerator of fraction
An improper fraction is a fraction in which the numerator (top number) is greater than or equal to the denominator (bottom number).
To convert a mixed fraction to an improper fraction, follow these steps:
Multiply the whole number part by the fraction's denominator. Add that to the numerator. Then write the result on top of the denominator.[tex]2\frac{5}{8} = \frac{8 \times 2 + 5}{8} = \frac{16 + 5}{8} = \frac{21}{8}[/tex]
Thus the numerator of fraction is 21. Option E is correct
Six cars pull up to a red light, one at a time. At the light, there are three lanes, one left-turn lane, one straight-going lane, and one right-turn lane. How many ways can the cars stack up so that all three lanes are occupied? Note that if the first car turns left and the second goes straight, this is considered different from the first car going straight and the second car turning left. In other words, the cars are distinguishable, but pull up to the intersection in a fixed order.
Answer: [tex]540[/tex]
We count the number of ways that some lane can be left empty, and subtract from the total:
Each driver has three choices, so it's [tex]3^6 = 729[/tex].
Now, we count the ways where at least 1 lane is left empty:
But we have double-counted the situations where two lanes are left empty. Since each driver only has one choice, there are [tex]3(1^6)[/tex] situations we overcount. This leaves [tex]729 - (192 - 3) = 540[/tex] ways to fill all three lanes.
Also, you took this question directly from Alcumus. The source is AoPS Staff they wrote this problem, and might request this post be taken down since you technically are not allowed to post Alcumus problems on the internet or their own forums.
Sunil takes 5 more days than Anil to a certain work . Anil left the work after 4days,Sunil takes 5days to complete the rest work . How many days they took to complete the work
Answer:
Anil would take 10 days and Sunil would take 15 days to complete the work.
Step-by-step Explanation:
To Determine:
How many days they took to complete the work?
Information Fetching and Solution steps:
Sunil takes 5 more days than Anil to a certain workAnil left the work after 4 daysSunil takes 5 days to complete the rest workLet is consider,
The number of days taken by Anil to complete the required work = d.
The number of days taken by Sunil to complete the required work = d + 5
Work done by Anil in one day = 1÷d
Work done by Sunil in one day = 1÷ (d+5)
Work done together by Anil and Sunil for one day = 1/d + 1/(d+5)
= (d+5+d)/d(d+5)
= (2d+5)/d(d+5)
Work done together by Anil and Sunil for 4 days = 4×(2d+5)/d(d+5) ....[A]
Work done by Sunil in 5 days = 5÷ (d+5) ....[B]
By adding equation [A] and [B], we can determine the complete work
[A] + [B] = 1
((4×(2d+5)/d(d+5))) + (5÷ (d+5)) = 1
8d+20+5d=1d(d+5)
13d+20=d²+5d
−d²+8x+20=0
(−d−2)(d−10)=0
d=−2 or d=10
As number of days can not be negative. So, d = 10. Therefore,
The number of days taken by Anil to complete
the required work = 10 days
The number of days taken by Sunil to complete
the required work = d+5 = 15 days
Hence, Anil would take 10 days and Sunil would take 15 days to complete the work.
Keywords: days, work
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a circle with radious of 1cm sits inside a 11cm times 12 cm rectangle what is the area of the shaded region
Answer: 128.86cm²
Step-by-step explanation:
The circle is inscribed in the rectangle. To find the shaded portion, subtract he area of the circle from the are of the rectangle.
Area of the rectangle = 11 x 12
= 132cm²
Area of the circle with radius of 1cm = πr²
= 3.142 x 1²
= 3.142cm²
Therefore , area of the shaded region = 132cm² - 3.142cm²
= 128.86cm²
Answer:128.86
Step-by-step explanation: I got it correct on khan
Two cars travel at the same speed to different destinations. Car A reaches its destination in 15 minutes. Car B reaches its destination in 35 minutes. Car B travels 15 miles farther than Car A. How fast do the cars travel? Write your answer as a fraction in simplest form.
Answer:
The cars are travelling ar the speed 45 mph.
Step-by-step explanation:
Let the two cars are moving at the speed of x mph.
Now, Car A reaches its destination in 15 minutes i.e. [tex]\frac{15}{60} = 0.25[/tex] hours.
Therefore, Car A travels in 15 minutes by 0.25x miles.
Again, Car B reaches its destination in 35 minutes i.e. [tex]\frac{35}{60} = 0.583[/tex] hours.
Therefore, Car B travels in 35 minutes by 0.583x miles.
Given that, (0.583x - 0.25x) = 15
⇒ 0.333x = 15
⇒ x = 45 mph
Therefore, the cars are travelling ar the speed 45 mph. (Answer)
The cars travel at a speed of 3/4 miles per minute.
Explanation:To find the speed of the cars, we can use the formula Speed = Distance/Time. Let's assume that Car A's speed is x miles per minute. Since Car B travels 15 miles farther than Car A and takes 35 minutes to reach its destination, Car B's speed would also be x miles per minute. Now, using the given information, we can set up two equations:
x * 15 = x * 35 - 15
Simplifying the equation, we get:
15x = 35x - 15
20x = 15
x = 0.75
Therefore, the cars travel at a speed of 0.75 miles per minute or the fraction 3/4 miles per minute.
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An airplane has 29 seats. The price for a coach seat is $600 in the price for a first class seat is $1050. The airline collected a total of $21,900 for the flight. How many coach seats were sold
Answer:
19 coach seats
Step-by-step explanation:
let the number of coach seats be C and number of first class seats be F
given that the total number of seats is 29,
C + F = 29 ---------(eq 1)
also given that each coach seat = $600, each 1st class seat is $1050 and a total of $21900 was collected,
600C + 1,050F = 21,900 -------(eq 2)
we have 2 equations and 2 unknowns, we can solve the system of equations by elimination
(eq 1) x 1,050 gives us:
1,050 (C + F) = 1,050(29)
1,050C + 1,050F = 30,450 ----- (eq 3)
by elimination, subtract eq 2 from eq 3
(1,050C + 1,050F) - (600C + 1,050F) = 30,450 - 21,900
1,050C - 600C = 8,550
450C = 8550
C = 855 /450
C = 19
Bruno needs to solve the equation x2 + 6x – 8 = 0 by completing the square. Which pair of steps is the most efficient way to begin?
There are probably some choices we're not being shown, but let's just do the whole procedure.
x² + 6x - 8 = 0
Step one: move the 8 to the other side.
x² + 6x = 8
Step two: add (6/2)²=9 to both sides.
x² + 6x + 3² = 8 + 9
Step three: Factor
(x + 3)² = 17
Step four: take the square root
x + 3 = ±√17
Step five: Solve for x,
x = -3 ± √17
Help, I know D2 is the dilation of 2? And I know the rotation is 90 degrees but I’m not to sure on how to find my answer? Help please
Answer:
(-18, 2)
Step-by-step explanation:
To rotate a point by 90°:
R₉₀ (x, y) = (-y, x)
R₉₀ (1, 9) = (-9, 1)
To dilate by 2:
D₂ (x, y) = (2x, 2y)
D₂ (-9, 1) = (-18, 2)
-3W + 2(8x -9) use x = 5 and w = 7
Answer:
41
Step-by-step explanation:
Substitute in 5 and 7 into the correct spots:
(-3)(7)+2((8)(5)-9)
Multiply and simplify:
-21+2(40-9)
-21+2(31)
-21+62
41
:)
Answer:
50
Step-by-step explanation:
-21 + 16x - 9
-21 + 80 - 9
59 - 9
50
A sequence is defined by the recursive function f(n + 1) =
f(n). If f(3) = 9, what is f(1) ?
Mark this and return
Save and Exit
Next
Submit
Answer:
[tex]f(1)=9[/tex]
Step-by-step explanation:
[tex]Given \ f(n+1)=f(n)\\f(3)=f(2)\\f(2)=f(1)\\f(1)=f(2)=f(3)\\f(1)=f(3)\\f(1)=9[/tex]
what is the radius of the circle x^2+y^2+21=10x
Answer:
The radius of the given equation is 2 .
Step-by-step explanation:
The equation of a circle whose center (h, k) and radius is r,
(x - h)² + (y - k)² = r² ..............................(i)
Here given that-
x² + y² + 21 = 10 x
x² - 10 x + y² + 21 = 0
( To making perfect square, add and subtract 25 ) -
x² - 10 x + 25 - 25 + y² + 21 = 0
(x² - 10 x + 25) + y² -4 =0
[As we know that -
(x - 5)² = x² - 10 x + 25]
(x - 5 )² + y² = 4
(x - 5)² + (y - 0)² = 4
(x - 5 )² + (y- 0)² = 2² ................................(ii)
On comparing equation (i) and(ii)-
r = 2
Hence the radius of the given equation is 2 and center is ( 5, 0).
Liu deposited 3,500 into a savings account . The simple interest rate is 4%. How much interest will the account earn in 2 years .
Interest = interest rate x principal x time
Answer:
$280
Step-by-step explanation:
Interest = Interest Rate x Principal x time
Interest = 0.04 x $3,500 x 2
Interest = $280
What is the answer ? Please
Subtract the length of the tail from the whole length.
3/5 - 1/5 = 2/5
The answer is 2/5
3/5 - 1/5 = 2/5
so your answer is 2/5
Given: JP = KP; PX = PY
Prove: APYJ - APXK
Which best describes the missing reasons?
Answer:
SAS Reflective property
Step-by-step explanation:
By reflexive property and SAS, we prove that ΔPYJ and ΔPXK are congruent.
What is congruency?We know two similar planer figures are congruent when we have sides or angles or both that are the same as the corresponding sides or angles or both.
Given, JP = KP and PX = PY.
∴ JX = KY.
Hence Z is the midpoint of JY and XK.
∴ JY = XK.
Reflexive property.
And the included ∠P is common to both the ΔPYJ and ΔPXK.
Side angle side congruency.
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Simplify the expression 8(5x- 3y)
Answer:
40x-24y
Step-by-step explanation:
Pheonix ran 4.5 miles per hour for three fourths of an hour. How did Aliyah run today?
Answer:
3.375 miles
Step-by-step explanation:
3/4 can be changes to 0.75. SO multiply 4.5 times 0.75 to get your answer
Tony buys 7 packages of mini-muffins. There are 3 mini-muffins in each packages. How many does tony buy?
Answer:
21 mini-muffins
Step-by-step explanation:
7 multiplied by 3 equals 21
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Tony bought a total of 21 mini-muffins. This was calculated by multiplying the number of packages he bought (7) by the number of mini-muffins in each package (3).
Explanation:This question is about a mathematical operation called multiplication. Tony purchases 7 packages of mini-muffins. There are 3 mini-muffins in each package. To find the total number of mini-muffins Tony buys, multiply the number of packages he bought (7) by the number of mini-muffins in each package (3). This calculation is written as 7 * 3. Therefore, Tony buys a total of 21 mini-muffins.
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A typical marathon is 26.2 miles. Allan averages 12 kilometers per 1 hour when running in marathons. How long does it take for Allan to complete a marathon, to the nearest tenth of an hour.
Answer:
3.5 hours
Step-by-step explanation:
Given: Distance= 26.2 miles
Speed= 12 km/h
First lets convert the unit of speed from kmh to mph.
Remember, 1 mile= 1.609 km
∴ For speed of 12 km/h= [tex]\frac{12}{1.609}= 7.45\ mph[/tex]
Speed= 7.45 mph
Next, find time taken by Allan to complete a Marathon.
[tex]Time= \frac{Distance}{speed}[/tex]
⇒ Time= [tex]\frac{26.2}{7.45}[/tex]
∴ Time= 3.516 hours ≅ 3.5 h (nearest tenth)
∴ Allan took 3.5 hours to complete marathon.
Allan takes approximately 3.5 hours to complete a marathon. This is determined by converting the marathon distance to kilometers and dividing it by his running speed.
To determine how long it takes Allan to complete a marathon, we need to convert the marathon distance from miles to kilometers and then find the time it takes based on his running speed.
1 mile is approximately 1.60934 kilometers, so:
26.2 miles × 1.60934 km/mile ≈ 42.164 km
Allan runs at an average speed of 12 kilometers per hour. The time (t) needed to complete the marathon can be calculated as:
t = distance / speed
t ≈ 42.164 km / 12 km/h ≈ 3.514 hours
Rounding to the nearest tenth of an hour, Allan takes approximately 3.5 hours to complete the marathon.
Drag each number to the correct location on the table. Each number can be used more than once, but not all numbers will be used.
Simplify the given polynomial expressions, and determine the degree and number of terms in each expression.
Degree
Degree
Number of
Terms
4x + 2.2(3x - 5)
(-304 +503 - 12) + (7x3 - 25 + 6)
(3x2 – 3)(3x2 + 3)
Answer:
1. [tex]12x^2-13.4x-11[/tex]
- Degree: 2
- Number of terms: 3
2. [tex]7x^3+168[/tex]
- Degree: 3
- Number of terms: 2
3. [tex]9x^4-9[/tex]
- Degree: 4
- Number of terms: 2
Step-by-step explanation:
For this exercise you need to remember the multiplication of signs:
[tex](+)(+)=+\\(-)(-)=+\\(-)(+)=-\\(+)(-)=-[/tex]
1. Given:
[tex](4x + 2.2)(3x - 5)[/tex]
Apply the Distributive property:
[tex]=12x^2+6.6x-20x-11[/tex]
Add the like terms:
[tex]=12x^2-13.4x-11[/tex]
You can idenfity that:
- Degree: 2
- Number of terms: 3
2. Given:
[tex](-304 +503 - 12) + (7x^3 - 25 + 6)[/tex]
Add the like terms:
[tex]=187 + 7x^3 - 25 + 6=7x^3+168[/tex]
You can idenfity that:
- Degree: 3
- Number of terms: 2
3. Given:
[tex](3x^2 - 3)(3x^2 + 3)[/tex]
Apply Distributive property:
[tex]=9x^4-9x^2+9x^2-9[/tex]
Add the like terms:
[tex]=9x^4-9[/tex]
You can idenfity that:
- Degree: 4
- Number of terms: 2