Answer:
20
Step-by-step explanation:
The common factors for 60,40,20,80 60 , 40 , 20 , 80 are 1,2,4,5,10,20 1 , 2 , 4 , 5 , 10 , 20 . The GCF for the numerical part is 20 .
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The area of the circular sector is equal to 49π / 10 square units.
How to find the area of a circular sector
In this problem we find the case of a circular sector, whose area (A) must be found by means of the following formula:
A = (α / 360°) · π · r²
Where:
α - Central angle, in degrees.r - RadiusIf we know that r = 6 and α = 49°, then the area of the circular sector is:
A = (49° / 360°) · π · 6²
A = 49π / 10
The circular sector has an area of 49π / 10 square units.
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Find all of the zeros
Answer:
{-3, -1, 1}
Step-by-step explanation:
Zeros refer to x-intercepts. X-intercepts are x values when y = 0. You can tell where they are by looking at where the line passes the x-axis.
Therefore, {-3, -1, 1} are the zeros.
The zeros of a 5-th degree polynomial are 2,i,-2i. Find the remaining zeros.
Answer:
-i,2i
Step-by-step explanation:
zeros(2,i,-2i {5th degree}
then the conjugate zeroes are,
I,2i {conjugate zeros}
so the answer is i, 2i
I’m am so lost please help thank you all
Answer:
Step-by-step explanation:
148 people
8. Which equation matches the model?
A 5 X 0.18 = 0.9
B 5 X 0.18 = 90
C 5 x 0.18 = 9.0
D 5 X 0.18 = 0.09
A stick is 20cm long.A student makes 5% error in measuring the stick.find two possible values for the student's measurement
Can someone please help, ty!!
Will mark brainliest!
Answer:
Distribute 4 to a and -5.
Step-by-step explanation:
Multiplication goes first.
pleaseeeee helppppp meee
18 ABCDEFGH is a cuboid. AB= 7.3 cm CH= 8.1 cm Angle BCA = 48° F A E D G B Find the size of the angle between AH and the plane ABCD Give your answer correct to 1 decimal place. H C (Total for Question 18 is 4 marks)
The size of the angle between AH and the plane ABCD is approximately 74.4°, rounded to one decimal place.
To find the size of the angle between AH and the plane ABCD in the given cuboid, we can use the concept of three-dimensional geometry.
First, let's consider the right triangle BCA. The given angle BCA is 48°, and we know that the length of AB is 7.3 cm. Using trigonometric functions, we can find the length of BC:
BC = AB * sin(BCA)
BC = 7.3 * sin(48°)
BC ≈ 5.429 cm
Now, let's look at the right triangle BAH. The length of AH is given as 8.1 cm. We can find the length of BH by subtracting BC from AB:
BH = AB - BC
BH ≈ 7.3 - 5.429
BH ≈ 1.871 cm
Next, let's consider the right triangle ABH. We want to find the angle BAH, which is the complement of the angle between AH and the plane ABCD. We can use the cosine function to find the angle BAH:
cos(BAH) = BH / AH
cos(BAH) ≈ 1.871 / 8.1
BAH ≈ arccos(1.871 / 8.1)
BAH ≈ 74.4°
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Albert and John are partners in a Bakery store. They needed $70,000 to start the business. They
invested in the ratio 3:7, respectively. How much did Albert invest in the business? How much did John invest in the business?
Answer:
Albert invested $21,000
John invested $49,000
Step-by-step explanation:
First add 3 and 7
3+7=10
Now divide 70,000 by 10
70,000/10=7000
Now multiply 7000 by 3 and 7
7000x3=21,000
7000x7=49,000
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Josue ran 6/10 of a mile and jogged 4/10 of a mile. What is the difference in simplest form
Answer:
1/5
Step-by-step explanation:
what is x + 3 1/2 = 9
Answer:
Step-by-step explanation:
x+3 1/2=9
x=9-7/2
x=(18-7)/2=11/2
x=5 1/2
Answer:
3 1/2 + 5 1/2= 9.
Step-by-step explanation:
Hope this helps? im sorry if it doesn't :)
Subtract the radical expression. Simplify if needed.
Answer:
7\(\sqrt{7}\)
Step-by-step explanation:
Take 9 out of \(\sqrt{63}\)
You get 3\(\sqrt{7}\)
Take 4 out of \(\sqrt{28}\)
You get 2\(\sqrt{7}\)
So, 3(3\(\sqrt{7}\)) - 2\(\sqrt{7}\)
= 9 \(\sqrt{7}\) - 2\(\sqrt{7}\)
=7\(\sqrt{7}\)
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British sterling silver is a copper-silver alloy that is 7.5% copper by weight. How many grams of pure copper and how many grams of British sterling silver should be used to prepare 330 grams of a copper-silver alloy that is 10% copper by weight? (Round your answers to one decimal place.)
British sterling silver ____________ g
Copper ___________g
British sterling silver = 321.1 grams
Copper = 8.9 grams
========================================================
Work Shown:
x = amount of British sterling silver (in grams)330-x = amount of pure copper (in grams)The two amounts add to 330 grams total. The x is some number in the interval 0 < x < 330.
7.5% of x = 0.075x = amount of pure copper from the British sterling0.075x+(330-x) = -0.925x+330 = total amount of pure copperWe want to end up with 330 grams of 10% copper, so we want 0.10*330 = 33 grams of pure copper after mixing the two metals.
Set the 33 equal to the expression -0.925x+330 and solve for x.
-----------
-0.925x+330 = 33
-0.925x = 33-330
-0.925x = -297
x = -297/(-0.925)
x = 321.081 approximately
x = 321.1 when rounding to one decimal place
330-x = 330-321.1 = 8.9
-----------
We'll need 321.1 grams of British sterling silver.
We'll also need 8.9 grams of pure copper.
Solve for b
(PLZ HELP ASAP!!)
Answer:
b = 39
Step-by-step explanation:
The sum of the angles in a triangle are 180 degrees
b+ 2b+ b+24 = 180
Combine like terms
4b +24 =180
Subtract 24 from each side
4b+24-24 =180-24
4b = 156
Divide each side by 4
4b/4 =156/4
b =39
Answer:
\( b = 39 \: \: degrees \\ \)
Step-by-step explanation:
Sum of the angles in a triangle is 180 degrees.
\(b + 2b + b + 24 = 180 \\ 4b + 24 = 180 \\ 4b = 180 - 24 \\ 4b =1 56 \\ \frac{4b}{4} = \frac{156}{4} \\ b = 39 \: \: degrees\)
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Sal's Sandwich Shop sells wraps and sandwiches as part of its lunch specials. The profit on every sandwich is $2, and the profit on every wrap is $3. Sal made a profit of $1,470 from lunch specials last month. The equation 2x + 3y = 1,470 represents Sal's profits last month, where x is the number of sandwich lunch specials sold and y is the number of wrap lunch specials sold. Describe how you would graph this line using the slope-intercept method. Be sure to write using complete sentences. Write the equation in function notation. Explain what the graph of the function represents. Be sure to use complete sentences. Graph the function. On the graph, make sure to label the intercepts. You may graph your equation by hand on a piece of paper and scan your work or you may use graphing technology. Suppose Sal's total profit on lunch specials for the next month is $1,593. The profit amounts are the same: $2 for each sandwich and $3 for each wrap. In a paragraph of at least three complete sentences, explain how the graphs of the functions for the two months are similar and how they are different.
Answer:
2x+3y=1470
Step-by-step explanation:
Sam is 13 years old and in 8th grade. Sam’s friend Sherry is 13 years old and in 8th grade. Sherry’s friend Tanya is also 13 years old and in 8th grade. Sam concludes that all 13 year olds are in the 8th grade. Determine if Sam’s conclusion is valid. Justify your response by typing in the space provided in the box below this prompt.
Answer:
whatt????/
Step-by-step explanation:
Answer:
It is not valid because some peoples birthday may be late so they will be 12 in 8th grade or some peoples birthday are early so they will be 14 in 8th grade.
Step-by-step explanation:
if the arithmetic mean of 8,4,6,x,2,7 is 5 then find the value of x?
Answer:
This gives us the value of $x$ as 3. Hence the answer is 3.
Step-by-step explanation:
Step-by-step explanation:
if you would arrange it in order and solve you will get 3
Henry has a recipe that calls for 1 1/2 cups of sugar. He wants to use 1/2 of that amount. How much sugar will Henry use?
Given a square, you can cut the square into smaller squares by cutting along lines parallel to the sides of the original square (these lines do not need to travel the entire side length of the original square). For example, by cutting along the lines below, you will divide a square into 6 smaller squares
Prove, using strong induction, that it is possible to cut a square into n smaller squares for any n≥6
Since our assumption holds for all values between 6 and k, and we have shown it also holds for k+1, we can conclude by strong induction that it is possible to cut a square into n smaller squares for any n ≥ 6.
To prove this using strong induction, we will first establish a base case and then prove that if the statement holds true for any value k, then it also holds true for k+1.
Base Case: n = 6
Divide the square into four equal smaller squares by drawing two lines, one vertical and one horizontal, each passing through the center.
Then, divide one of these smaller squares into two equal rectangles by drawing a line parallel to the side.
We have now divided the original square into 6 smaller squares.
Inductive Step:
Assume the statement is true for all values n = 6, 7, ..., k,
where k ≥ 6.
We want to prove that the statement is true for n = k+1.
Consider a square that is divided into k smaller squares.
We will show that it is possible to divide this square into k+1 smaller squares.
Choose one of the k squares and label it S.
If S is a rectangle, divide it into two smaller squares by drawing a line parallel to the shorter side.
If S is a square, divide it into two equal rectangles by drawing a line through the center parallel to a side.
In either case, we have replaced one of the original k squares with two smaller squares, resulting in a total of k+1 squares.
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I need the answer asap
-5x=25 how to solve this problem
Can you help me please asap
The general solution to the given differential equation is:
y = (x/12) - (1/288)
How to solve the Differential Equation?
We want to solve the differential equation given as: y' - 24xy = -2x
The integrating factor is given by the exponential of the integral of the coefficient of y, which in this case is -24x. Therefore, the integrating factor is e^(-24x).
Multiplying the entire equation by the integrating factor, we get:
e^(-24x)y' - 24xe^(-24x)y = -2xe^(-24x)
The left side of the equation is the derivative of (e^(-24x)y) with respect to x:
(d/dx)(e^(-24x)y) = -2xe^(-24x)
Integrating both sides with respect to x, we have:
e^(-24x)y = ∫(-2xe^(-24x))dx
Integrating the right side, we get:
e^(-24x)y = -∫(2xe^(-24x))dx
To evaluate the integral on the right side, we can use integration by parts. Let's differentiate -2x and integrate e^(-24x):
u = -2x (differential of u = -2dx)
dv = e^(-24x) (integral of dv = -1/24e^(-24x)dx)
Using the integration by parts formula:
∫uv dx = uv - ∫v du
We can compute the integral as follows:
-∫(2xe^(-24x))dx = -[(-2x)(-1/24e^(-24x)) - ∫(-1/24e^(-24x))(-2dx)]
= -[x/12e^(-24x) + 1/12∫e^(-24x)dx]
= -[x/12e^(-24x) + 1/12(-1/24)e^(-24x)]
= -[x/12e^(-24x) - 1/(12*24)e^(-24x)]
= -[x/12e^(-24x) - 1/(288e^(-24x))]
= -[x/12 - 1/288]e^(-24x)
Substituting this back into the previous equation, we have:
e^(-24x)y = -[-(x/12 - 1/288)e^(-24x)]
Simplifying further:
e^(-24x)y = (x/12 - 1/288)e^(-24x)
Canceling out e^(-24x) on both sides:
y = x/12 - 1/288
Therefore, the general solution to the given differential equation is:
y = x/12 - 1/288
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if Δabc≅Δpqr, then ac≅
ac is congruent to pr because those sides correspond
A car that has a weight W is on an inclined plane with an angle of pi/12. A cable is holding the car in place ( the whole problem is shown the picture )
Answer:
Ok, in this problem we first need to define the components parallel and perpendicular to the plane of the inclined plane, so we can project the gravitational component in each one of these. (see the image below to see the change in coordinates)
The perpendicular component will be defined by -cos(pi/12) (because the weight vector points down) and the parallel one is defined by sin(pi/12).
Now, the gravitational force will be, in magnitude, F = g*w
where g is the gravitational acceleration: g = 9.8m/s^2
Now, the perpendicular projection is:
Pe = -W*9.8m/s^2*cos(3.14/12) = W*9.799 m/s^2 (this component is canceled due to the normal force of the inclined plane)
The parallel projection will be:
Pa = W*9.8m/s^2*sin(3.14/12) = W*0.045 m/s^2
Now, we know that the car is still, then the tension on the cable must be equal in magnitude to this force (but in the opposite direction)
Then the module of the tension of the cable is:
ITI = W*0.045 m/s^2
or
T = -W*0.045 m/s^2 in the parallel axis.
b) The force that the pavement is applying on the car will be the normal force, that is equal to the perpendicular projection of the gravitational force (But again, in opposite direction).
Then the magnitude will be:
INI = W*9.799 m/s^2
7 whole number 1 over 2 percent to it's lowest term
The fraction in its lowest terms for 7 1/2 percent is 3/40.
To express the mixed number 7 1/2 percent as a fraction in its lowest terms, we need to convert it to a fraction and simplify.
First, we convert the mixed number to an improper fraction:
7 1/2 percent = 7 1/2 / 100
To simplify this fraction, we find the least common multiple (LCM) of the denominator (2) and the percent denominator (100), which is 200.
Now, we can rewrite the fraction with the common denominator:
7 1/2 / 100 = (7 * 2 + 1) / 200 = 15/200
To simplify the fraction further, we can divide both the numerator and denominator by their greatest common divisor (GCD). In this case, the GCD of 15 and 200 is 5.
15/200 = (15 ÷ 5) / (200 ÷ 5) = 3/40
Therefore, the fraction in its lowest terms for 7 1/2 percent is 3/40.
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Solve for x.
x² = 9
x=±3
x=±4.5
x=±18
x=±81
Rewrite each subtraction equation as an addition equation.
p - 20 = - 30
Answer:
p + 30 = 20
Step-by-step explanation:
we can add 30 to both sides to make this an addition equation:
p - 20 = -30 (now add 30 to both sides)
p - 20 + 30 = 0 (then, add 20 to both sides)
p + 30 = 20 (this would be the addition equation)
16. (x4 - 3x° – 7x - 14) = (x - 4) 4
Brand A has a box of 25 forks for 1.99 and Brand B has a box of 42 totals for 3.89. What is the unit price for each brand and what brand is a better buy based on unit price
Answer:
Brand A
Step-by-step explanation:
Brand A has a box of 25 forks for 1.99
Take the price per fork
1.99 /25 = .0796
.08 per fork
Brand B has a box of 42 totals for 3.89
3.89 / 42
.092319048
.09 per fork