Step-by-step explanation:
given :
A=5x - 10
B = 3x
C= 2x - 10
solution:
A+B+C = 180°
5x - 10 + 3x+ 2x - 10 = 180
10x -20 = 180
10x = 200
x = 20
A = 5(20)-10 = 100-10 = 90°
B = 3x = 3(20) = 60°
C = 2x-10 =2(20)-10 =40-10 = 30°
this is the right triangle and scalene triangle
please help
dgfhkcgfkgnglhgdh
A contractor is installing tiles on a floor that measures 132 x 216 inches. If each tile measures 4 x 4 inches, how many tiles will the contractor use to cover the floor?
Answer:
1782 tiles
Step-by-step explanation:
Given that:
Dimension fo floor = 132 x 216 inches
Area of floor = 132 * 216 = 28512 in²
Dimension of tiles = 4 * 4 inches
Area of tiles = 4 * 4 = 16 in²
Number of tiles needed to cover floor :
Area of floor / Area of tiles
28512 in² / 16 in²
= 1782 tiles
Jermey paid 20.40 for a box of 15 pens.How much does each pen cost?
Jeremy paid $20.40 for a box of 15 pens.
The cost of one pen can be calculated by dividing the total cost by 15. This is shown below:
\(\Rightarrow\frac{20.40}{15}=1.36\)Hence, each pen costs $1.36.
The cost of each pen is $1.36.
We will use the formula:
Cost of one pen = total amount/number of pens
Given in the question,
Total amount = $20.40
Number of pens = 15
Now, we will put the values in the above formula,
Cost of one pen = 20.40 / 15
= $1.36
Therefore, the cost of each pen is $1.36.
To learn more about such Pen related questions:
https://brainly.com/question/472939
https://brainly.com/question/2973352
Option 1: The R9 000 invested at 8% p.a. simple interest for 3 years.
The final amount or balance in the account will be 11,160.
What is Simple Interest?Simple interest is defined as the interest obtained over the principal amount on a certain rate.
Given,
Principal amount (Starting amount) = 9000
Rate of interest = 8% = 8/100 = 0.08
Time = 3 years
The final amount in a simple interest is,
Final amount = Principal amount [1 + (interest rate × time)]
= 9000 [ 1 + (0.08 × 3)]
= 11,160
Hence the final amount is 11,160.
Learn more about Simple Interest here :
https://brainly.com/question/25845758
#SPJ1
Jacob is painting the walls of his new tiny house. If 3⁄4 of a can of paint is enough to paint 1⁄8 of the walls, how much paint does Jacob need to paint all of the walls?
Answer:
6 cans
Step-by-step explanation:
for the walls it would be 8* 3/4 = 6 cans
Answer:
It will take 6 cans of paint to paint all the walls of his tiny house.
Step-by-step explanation:
If 3/4 of a can of paint is enough to paint 1/8 of all of the walls in his tiny house, we need to find out how much paint he needs to paint the rest of the walls.
This is done by multiplying 3/4 by 8, because there are eight 1/8th parts to a whole.
3/4 x 8 = ?
3/4 x 8/1 = ?
Now, multiply the numerators together (3 x 8 = 24), and the denominators together (4 x 1 = 4).
The fraction is now written as 24/4.
24/4 = 6
Jacob will need 6 cans of paint to paint all the walls of his new tiny house.
Pls help super hard question
he got the same answer i did
Step-by-step explanation:
I need help on this
3 friends go on a hike and bring 14 cookies with them. If they split them evenly how much will each get
14÷3= 4.6666666...
so 4 cookies for each one... with 2 cookies left
solve the problem. if the null space of a 7 × 9 matrix is 3-dimensional, find rank a, dim row a, and dim col a.
If the null space of a 7 × 9 matrix is 3-dimensional, we can determine the rank of matrix A, the dimension of the row space of A, and the dimension of the column space of A.
The rank of a matrix is equal to the number of linearly independent columns or rows in the matrix. Since the null space is 3-dimensional, the rank of A would be 9 - 3 = 6.
The dimension of the row space, also known as the row rank, is equal to the dimension of the column space, or the column rank. Therefore, the dimension of the row space and the dimension of the column space of A would also be 6.
The rank of matrix A would be 6, and both the dimension of the row space and the dimension of the column space of A would also be 6.
Learn more about matrix here: brainly.com/question/28180105
#SPJ11
A plane flies 1890 km in 3.5 hours. How far will the plane fly in 4.2 hours if it maintains the same air speed?
Answer:
2267 km
Step-by-step explanation:
1890 km/3.5 hours = 2267 km/4.2 hours
2268 km far will the plane fly in 4.2 hours if it maintains the same air speed.
How far will the plane fly in 4.2 hours if it maintains the same air speed?
The formula speed = distance ÷ time can be rearranged like any other equation. The formula can be rearranged in three ways: speed = distance ÷ time. distance = speed × time.
Given,a plane flies 1890 km in 3.5 hours.
So, distance = 1890 km and time = 3.5 hours.
We know,
Distance = Speed × Time
For example, If speed of a car is 20 m/s and the car travel 60 s then the car cover total distance
\(= 20 \times 60 = 1200 \: m\)
Again
\(speed = \frac{distance}{time}\)
According to question,
Speed
\( = \frac{distance}{time} \\ = \frac{1890}{3.5} \\ = 540 \)
So, speed of the plane is 540 km/hour.
Again given time is 4.2 hours
So, Distance = Speed × Time
\( = 540 \times 4.2 \\ = 2268 \: km\)
Speed and distance related one more question,
https://brainly.com/question/12759408
#SPJ2
What is3/5written as a percent?
Answer:
60%
Step-by-step explanation:
5÷3=0.6
0.6×100=60
Turn it into a percent.
60%
Could I please have BRAINLIEST?
Answer:
60%
Step-by-step explanation:
. Find the slope of the line through the points (-5, 86) and (95, 16).
The slope's equation is:
⇒ \(\frac{y2-y1}{x2-x1}\)
Since the two points are (-5,86) and (95,16)
⇒\(slope = \frac{16-86}{95--5} =-\frac{70}{100} =-\frac{7}{10}\)
Thus the slope is -7/10.
Hope that helps!
What is order of magnitude?
The magnitude of the number of the minutes in the school is 2.
What magnitude is 0 in?Although the order of magnitude of zero is not specified, it is occasionally stated to have a magnitude of. Zero is less than any other positive number, and so is its order of magnitude, according to this infinitely negative order of magnitude.
Can a magnitude order be negative?There can be no negative magnitude. The component of the vector that lacks direction is its length (positive or negative).
The order of magnitude is the approximate representation of the logarithmic of the order's value and is typically considered to be 10 taken as the base.
On a scale of 10 logarithmic, the difference in the order of magnitude can be quantified.
The value storage is where you may find the number into the various magnetic.
As a result, the number of minutes spent in school is 2.
To learn more about order of magnitude from given link
https://brainly.com/question/15698632
#SPJ1
Complete question -
What is the Order of Magnitude of the number of minutes in a school day?
Is the line y=3x-7 parallel or perpendicular to 3x+9y=9? Explain your answer
Answer:
The lines are perpendicular because perpendicular lines have slopes that are opposite reciprocals. To compare the slopes, you can rewrite the second equation in slope-intercept form as y = (–1/3)x + 1. The slope of the given line is 3, and the slope of the second line is –1/3. These have a product of –1, which means they are opposite reciprocals. Thus, the two lines are perpendicular.
Step-by-step explanation:
I don't need to explain.
It is perpendicular. Because 3x + 9y = 9 in slope-intercept form would be -1/3x + 1, -1/3x would be the opposite of 3x. Therefore, it is perpendicular.
But if you want the sample response instead, here you go
Sample Response: The lines are perpendicular because perpendicular lines have slopes that are opposite reciprocals. To compare the slopes, you can rewrite the second equation in slope-intercept form as y = (–1/3)x + 1. The slope of the given line is 3, and the slope of the second line is –1/3. These have a product of –1, which means they are opposite reciprocals. Thus, the two lines are perpendicular.
pls help anyone. i rlly need help
Answer:
980
Step-by-step explanation:
30x7=210
18x24 divided by 2=216
18x7=126
210
+216
426x2=854
+126
980
Hope this helps
Brainliest pls
Have a great day!
Answer:
936 cm^3
Step-by-step explanation:
Split into pieces
Sides: \(\frac{1}{2} *18*24 = 216\)
Multiply that by 2 because there are 2 of this piece
Bottom Area: \(24*7 = 168\)
Slope: \(30*7 = 210\)
Last piece: \(18*7 = 126\)
126+210+168+432 = 936
Simplify 3 square root of 2 - 3 square root of 18
Answer:
-6 √(2) = -8.48528137424
Step-by-step explanation:
:))
Consider the following vector field.
F(x, y, z) =
9ex sin(y), 2ey sin(z), 8ez
sin(x)
(a)
Find the curl of the vector field.
curl(F) =
(b)
Find the divergence of the vector field.
div(F) =
The curl of the vector field
curl(F) = -2ey cos(z)i + 8ez cos(x)j - 9ex cos(y)k
The divergence of the vector field
div(F) = 9e^x sin(y) + 2e^y sin(z) + 8e^z
To find the curl of the vector field F(x, y, z) = 9ex sin(y), 2ey sin(z), 8ez sin(x), we need to compute the determinant of the curl matrix.
(a) Curl of F:
The curl of a vector field F = P(x, y, z)i + Q(x, y, z)j + R(x, y, z)k is given by the following formula:
curl(F) = (∂R/∂y - ∂Q/∂z)i + (∂P/∂z - ∂R/∂x)j + (∂Q/∂x - ∂P/∂y)k
In this case, we have:
P(x, y, z) = 9ex sin(y)
Q(x, y, z) = 2ey sin(z)
R(x, y, z) = 8ez sin(x)
Taking the partial derivatives, we get:
∂P/∂y = 9ex cos(y)
∂Q/∂z = 2ey cos(z)
∂R/∂x = 8ez cos(x)
∂R/∂y = 0 (no y-dependence in R)
∂Q/∂x = 0 (no x-dependence in Q)
∂P/∂z = 0 (no z-dependence in P)
Substituting these values into the curl formula, we have:
curl(F) = (0 - 2ey cos(z))i + (8ez cos(x) - 0)j + (0 - 9ex cos(y))k
= -2ey cos(z)i + 8ez cos(x)j - 9ex cos(y)k
Therefore, the curl of the vector field F is given by:
curl(F) = -2ey cos(z)i + 8ez cos(x)j - 9ex cos(y)k
(b) Divergence of F:
The divergence of a vector field F = P(x, y, z)i + Q(x, y, z)j + R(x, y, z)k is given by the following formula:
div(F) = ∂P/∂x + ∂Q/∂y + ∂R/∂z
In this case, we have:
∂P/∂x = 9e^x sin(y)
∂Q/∂y = 2e^y sin(z)
∂R/∂z = 8e^z
Substituting these values into the divergence formula, we have:
div(F) = 9e^x sin(y) + 2e^y sin(z) + 8e^z
Therefore, the divergence of the vector field F is given by:
div(F) = 9e^x sin(y) + 2e^y sin(z) + 8e^z
Learn more about divergence of the vector this link:
https://brainly.com/question/30907324
#SPJ11
pls answer these questions
By using factοrs, the numbers are 17, 35, 12, 50.
What is a factοr?A factοr is a number that can be evenly divided intο anοther number withοut leaving a remainder. In οther wοrds, when yοu divide οne number by anοther number and the remainder is zerο, then the secοnd number is a factοr οf the first number.
a) The οnly number less than 40 with 7 as a factοr is 7 itself. Since the sum οf the digits is 8, and 7 is already οne οf the digits, the οther digit must be 1. Therefοre, the number is 17.
b) The twο factοrs οf the mystery number are 3 and 5. The οnly number less than 100 with 3 and 5 as factοrs, and with digits that are 1 apart, is 35.
c) The cοmmοn multiple οf 3, 4, and 10 is 60, which is a factοr οf 120. The οnly factοr οf 120 with digits that add up tο 6 is 12 (1+2=3).
d) The cοmmοn multiple οf 2 and 5 that is a factοr οf 100 is 10. The οnly number less than 100 that is a multiple οf 2 and 5 and has digits that add up tο 5 is 50 (5+0=5).
To know more about factors visit:
brainly.com/question/30242986
#SPJ1
Find positive numbers x and y satisfying the equation xy such that the sum xy is as small as possible.
To find positive numbers x and y that satisfy the given condition, we need to minimize the sum x + y while keeping the product xy constant. We can use the Arithmetic Mean-Geometric Mean (AM-GM) Inequality for this problem. The AM-GM inequality states that the arithmetic mean of a set of non-negative numbers is always greater than or equal to the geometric mean of the same numbers.
In this case, we have two numbers, x and y. The arithmetic mean of x and y is (x + y)/2, and the geometric mean is √(xy). According to the AM-GM inequality, we have:
(x + y)/2 ≥ √(xy)
Multiplying both sides by 2, we get:
x + y ≥ 2√(xy)
Now, we want to minimize the sum x + y, which means we need to find the minimum value for the right-hand side of the inequality. The minimum value occurs when the inequality becomes an equality:
x + y = 2√(xy)
To achieve this equality, x must be equal to y (x = y). This is because the arithmetic mean and geometric mean are equal only when all the numbers in the set are equal. Therefore, x = y and the product xy will have the minimum sum. The exact values of x and y will depend on the given constraint for the product xy.
To know more about mean visit:
https://brainly.com/question/31101410
#SPJ11
You must decide whether to buy new machinery to produce product X or to modify existing machinery. You believe the probability of a prosperous economy next year is 0.7. Prepare a decision tree and use it to calculate the expected value of the buy new option. The payoff table is provided below (+ for profits and - for losses).
When entering the answer, do not use the $ symbol. Do not enter the thousand separator. Enter up to 2 decimal places after the decimal point. For example, $6,525.35 must be entered as 6525.35
N1: Prosperity ($) N2: Recession ($)
A1 (Buy New) $1,035,332 $-150,000
A2(Modify) $823,625 $293,648
The expected value of the "Buy New" option is 724732.60.
Decision Tree:
To solve the given problem, the first step is to create a decision tree. The decision tree for the given problem is shown below:
Expected Value Calculation: The expected value of the "Buy New" option can be calculated using the following formula:
Expected Value = (Prob. of Prosperity * Payoff for Prosperity) + (Prob. of Recession * Payoff for Recession)
Substituting the given values in the above formula, we get:
Expected Value for "Buy New" = (0.7 * 1,035,332) + (0.3 * -150,000)Expected Value for "Buy New" = 724,732.60
Therefore, the expected value of the "Buy New" option is 724,732.60.
Conclusion:
To conclude, the decision tree is an effective tool used in decision making, especially when the consequences of different decisions are unclear. It helps individuals understand the costs and benefits of different choices and decide the best possible action based on their preferences and probabilities.
The expected value of the "Buy New" option is 724,732.60.
For more questions on expected value
https://brainly.com/question/14723169
#SPJ8
What’s the x and y to this
\(\huge\begin{array}{ccc}y=-\dfrac{3}{2}x+3\end{array}\)
The equation of a straight line passing through two points.
The "point-slope" form of the equation of a straight line:
POINTS:
\((x_1,\ y_1),\ (x_2,\ y_2)\)
EQUATION:
\(y-y_1=m(x-x_1)\)
where
SLOPE:
\(m=\dfrac{y_2-y_1}{x_2-x_1}\)
SOLUTION:We have two points whose coordinates can be read from the graph:
\((0,\ 3),\ (2,\ 0)\)
Substitute:
\(m=\dfrac{0-3}{2-0}=\dfrac{-3}{2}=-\dfrac{3}{2}\\\\y-3=-\dfrac{3}{2}(x-0)\\\\y-3=-\dfrac{3}{2}x\)
add 3 to both sides
\(y-3+3=-\dfrac{3}{2}x+3}\\\\\boxed{y=-\dfrac{3}{2}x+3}\)
Which product represents the fraction of the circle that is shaded?
Answer:
1/4
Step-by-step explanation:
how would you interpret the findings of a correlation study that reported a linear correlation coefficient of 0.3?
The linear correlation coefficient of 0.3 indicates a moderate positive correlation between the two variables.
This suggests that when one variable increases, the other variable tends to increase too. However, there is not a strong linear relationship between the two variables, meaning that the increase in one variable does not guarantee a predictable change in the other variable.
When interpreting the findings of a correlation study, it is important to note the strength of the relationship between the two variables. A linear correlation coefficient of 0.3 indicates a moderate positive correlation, meaning that the two variables increase together but there is not a strong linear relationship between the two variables.
This means that the increase in one variable does not guarantee a predictable change in the other variable. To put it another way, the strength of the correlation means that when one variable increases, it is likely that the other will increase as well, but it is not guaranteed.
Therefore, caution should be used when making predictions based on the results of a correlation study.
To know more about linear correlation coefficient click on below link:
https://brainly.com/question/24881420#
#SPJ11
CASE :
A stationery shop has been running for 10 years and is located
near a campus where you study in Jakarta. You often stop by this
store to buy stationery, markers, rulers, and photocopiers for
co
The given paragraph states that a stationery shop has been running for 10 years near campus in Jakarta.
Students like the asker often visit this store to purchase stationery, markers, rulers, and photocopiers.
The word "been" is a past participle of the verb "be." It is used to show the completion of an action in the past.
In this case, it implies that the stationery shop has been operating for the past 10 years near the campus.
The sentence can be rewritten as follows to make use of the word "been":
"The stationery shop has been providing stationery, markers, rulers, and photocopiers to students near the campus for 10 years."
To know more about the word implies visits :
https://brainly.com/question/2507296
#SPJ11
3) John is starting a roofing business. He will need to buy a truck and some supplies to get his business going. The truck costs $3400 used. If hammers cost $22 each and he only has $3750, how many hammers can he purchase?
Answer:
15 hammers
Step-by-step explanation:
Let's first find how much money he has left after he buys the truck:
3750-3400=$350
Now let's find how many hammers he can purchase:
350/22=15.91
This means he can purchase 15 hammers since he cannot have .91 of a hammer.
Answer:
15
Step-by-step explanation:
Since John's truck costs 3,400, subtract that from 3,750
3750
-3400
-----------
350
22 goes into 350 fifteen times, hence giving you the answer 15.
Here is a system of equations:
-7x + 3y = -65
-7x + 10y = -135
Write an equation that results from subtracting the two equations.
Answer:
y = -10
Step-by-step explanation:
(-7x+3y) - (-7x +10y) =-65 -(-135)
-7x + 3y + 7x -10y = 70
-7y = 70
y = -10
The equation that results from subtracting - 7x + 3y = - 65 and
- 7x + 10y = - 135 is 7y = - 70.
What are simultaneous equations?We know two simultaneous equations have a unique solution when they intersect at a point,
when they are parallel they have no solution and when they are coinciding they have an infinite no. of solutions.
Given, a system of equations - 7x + 3y = - 65 and - 7x + 10y = - 135.
Subtracting the first equation from the second we get,
- 7x + 10y = - 135
(-) - 7x + 3y = - 65
_________________
Negative sign gets distributed
- 7x + 10y = - 135
+ 7x - 3y = + 65
_________________
7y = - 70
y = - 70/7
y = - 10.
So, the value of x is -7x +10×(-10) = - 135.
- 7x - 100 = - 135.
- 7x = - 135 + 100.
- 7x = - 35.
x = 7.
learn more about the system of equations here :
https://brainly.com/question/24065247
#SPJ2
what is the equation of y=x^3 with the given transformations
Each transformation affects the shape and position of the graph. It is important to carefully consider the order of the transformations and their impact on the equation.
1. Horizontal Shift (c):
If there is a horizontal shift, the equation becomes y = (x - c)^3.
For example, if there is a shift of 2 units to the right, the equation would be y = (x - 2)^3.
2. Vertical Shift (d):
If there is a vertical shift, the equation becomes y = x^3 + d.
For example, if there is a shift of 3 units upwards, the equation would be y = x^3 + 3.
3. Vertical Stretch (a):
If there is a vertical stretch or compression, the equation becomes y = a * x^3.
For example, if there is a vertical stretch by a factor of 2, the equation would be y = 2 * x^3.
4. Reflection (along the x-axis):
If there is a reflection along the x-axis, the equation becomes y = -x^3.
This flips the graph of the original function upside down.
5. Reflection (along the y-axis):
If there is a reflection along the y-axis, the equation becomes y = (-x)^3.
This mirrors the graph of the original function.
6. Combined Transformations:
If there are multiple transformations, we can apply them in the order they are given. For example, if there is a vertical stretch by a factor of 2 and a horizontal shift of 3 units to the right, the equation would be y = 2 * (x - 3)^3.
Remember, each transformation affects the shape and position of the graph. It is important to carefully consider the order of the transformations and their impact on the equation.
To know more about equation here:
brainly.com/question/29292690
#SPJ11
In triangle RST,RS=15,ST=16,and RT=18.Arrange the angles from largest to smallest
Answer:
RT=18 ST=16 and last RS =15
The following table represents the number of tickets purchased at a movie theatre and the cost of purchase.
# of Tickets Cost
2 $17
4 $34
6 $51
8 $68
The number of tickets purchased varies directly with the total cost of the purchase. Determine the constant of variation.
Rational number can expressed as_.
Answer:
⏃ rational number can be expressed as ⏃ number that can be written in the form of ⏃ fracton.