Answer:
x ≈ 14.4
Step-by-step explanation:
using the cosine ratio in the right triangle
cos59° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{x}{28}[/tex] ( multiply both sides by 28 )
28 × cos59° , then
x ≈ 14.4 ( to the nearest tenth )
If 3x + 2y = 1 and
2x + 7y = 3
How do you find x and y step by step?
Step-by-step explanation:
there are 2 main approaches (in their core they are the same, of course, but they look different) :
1. use one equation to express one variable by the second, and then use this in the second equation to solve for the remaining variable. with that you go back into the first equation and solve for the first variable.
2. multiply both equations by certain factors as needed, then add both results, so that there is one summary equation with only one variable, and then solve for it. then use that in one of the original equations and solve for the second variable.
using 1.
3x + 2y = 1
3x = 1 - 2y
x = (1 - 2y)/3
2x + 7y = 3
2(1 - 2y)/3 + 7y = 3
2(1 - 2y) + 21y = 9
2 - 4y + 21y = 9
17y = 7
y = 7/17
x = (1 - 2y)/3 = (1 - 2×7/17)/3 = (1 - 14/17)/3 =
= (17/17 - 14/17)/3 = 3/17 / 3 = 1/17
using 2.
multiply first equation by 2, the second by -3
6x + 4y = 2
-6x - 21y = -9
----------------------
0 -17y = -7
-17y = -7
17y = 7
y = 7/17
and so on (as under 1.).
Step-by-step explanation:
First, you can multiply the both equation by one of the coefficient of either X or Y as shown above.
Secondly, after doing that you can multiply one of the equations by the negative sign in order for one of the coefficient to cancel out.
From there you can find X
After getting X , you can put the answer you get into any equation of your choice. collect like terms and then you'll find Y.
Hope this helps. If you don't understand use the picture if the solving above for better explanation. Thanks
Triangles A B C and N M L are shown. Angles B A C and L N M are right angles.
What additional information could be used to prove that △ABC ~ △NML? Check all that apply.
∠B ≅ ∠M
△ABC is a right triangle.
△ABC was rotated and dilated by a scale factor between 0 and 1.
△ABC was translated right and down.
∠C ≅ ∠L
The additional information needed to prove both triangles are similar are:
A. ∠B ≅ ∠M
C. △ABC was rotated and dilated by a scale factor between 0 and 1
E. ∠C ≅ ∠L
What are Similar Triangles?When a triangle is rotated and dilated by a scale factor, the new triangle formed has the same shape but different size of the original triangle. However, all its corresponding angles remains congruent.
Thus, for triangles ABC and NML to be similar to each other, since we already known each have one congruent right angles, the additional information needed are:
A. ∠B ≅ ∠M
C. △ABC was rotated and dilated by a scale factor between 0 and 1
E. ∠C ≅ ∠L
Learn more about similar triangles on:
https://brainly.com/question/2644832
#SPJ1
Point Q is the center of dilation. Rectangle L M N P is dilated to form rectangle L prime M prime N prime P prime. Side L M is 4 inches and side M N is 6 inches. The length of Q L is 12 and the length of L L prime is 42.
Sissy wants to enlarge a picture of a constellation so that she can put it on the wall in her daughter’s room. What will be the area of the enlarged picture on the wall?
24 in.2
108 in.2
224 in.2
486 in.2
The area of the enlarged picture on the wall is gotten as; D: 486 in²
How to use center of Dilation?The formula for Linear scale factor is;
L.S = Image distance/object distance
Thus, from the attached image, we can find the Linear scale factor as;
L.S = OL'/OL
L.S = 54/ 12
L.S = 9/2
Area scale factor is equal to the square of linear scale factor. Thus;
Area scale factor = (9/2)²
Area scale factor = 81/4
Now,
81/4 = Area of larger rectangle/Area of smaller rectangle
Area of the smaller rectangle = 4 ×6 = 24 in²
Thus;
Area of enlarged picture on wall = (81/4) × 24
Area of enlarged picture on wall = 486 in²
Read more about Center of Dilation at; https://brainly.com/question/3457976
#SPJ1
Answer:
Step-by-step explanation:
its D
The ratio of Jessica’s stickers to Rod’s stickers is 7:4. Jessica has 21 stickers. How many
stickers does Rod have?
Answer:
12stickers
Step-by-step explanation:
that's all I could do.have a nice day.hope it helps.
A local electronics store offers a rewards card to each of its customers. The number of rewards points a customer earns varies directly with the amount of money, in dollars, that the customer spends at the store. After spending $60 at the electronics store, Jay earned 15 points. If Jay spends 40 at the store, how many points will he earn?
If Jay spends 40 at the store, the number of points he will earn is; 10 points
How to solve direct variation?Let the number of rewards points a customer earns be y
Let the amount of money, in dollars, that the customer spends at the store be x.
Since the number of rewards points a customer earns varies directly with the amount of money, in dollars, that the customer spends at the store, then we can say that;
y ∝ x
Thus;
y = kx
where k is the constant of proportionality.
We are given x = 15 when y = $60. Thus;
60 = 15k
k = 60/15
k = 4
If Jay spends $40, it means the number of points will be;
40 = 4x
40/4 = x
x = 10 points.
Read more about Direct Variation at; https://brainly.com/question/6499629
#SPJ1
Which congruence criteria cab be used directly from the information about triangles jhk ghl to prove hk and ghl
Triangle JHK and GHL are congruent based on the angle-angle-angle congruency theorem.
What are congruent triangles?Two triangles are said to be congruent if they have the same shape and angles. The ratio of their corresponding sides are also to be proportional.
Given triangle JHK and GHL are congruent based on the angle-angle-angle congruency theorem.
Find out more on congruent triangles at: https://brainly.com/question/2938476
#SPJ1
The monthly income of Ram is Rs 40,000. If he paid Rs 8,000 as income tax. Find the rate of income tax.
Hello!
Rate of income tax = Tax paid / Monthly income
⇒ Rate = 8,000 / 40,000
⇒ Rate = 0.2
⇒ Rate = 20%
∴ The rate of income tax is 20%.
So please answer this please for 50 points so you can do what im doing.
Answer:
I think it's C
Step-by-step explanation:
Hope it helps
use the distrubutive property to simply -9(n-4)
Answer:
The distrubutive property
-9(n-4)
=-9n+36
Help please!
What’s the answer for graphing the piece wise function to get the right answer?
Answer:
-b
Step-by-step explanation:
-2x+9x^6+1-9x^2 how do you answer this question in descending order
Answer:
9x ^ 6 -9x ^ 2-2x + 1
Step-by-step explanation:
]Triangles H J K and L M N are congruent. Triangle H J K is rotated about point H to form triangle L N M. Triangle L M N is higher than triangle H J K.
Two rigid transformations are used to map ΔHJK to ΔLMN. The first is a translation of vertex H to vertex L. What is the second transformation?
a reflection across the line containing HK
a rotation about point H
a reflection across the line containing HJ
a rotation about point K
The second transformation is a rotation about point H.
What is a congruent triangle?It should be noted that a congruent triangle simply means when two triangles have the same sides and the same angles.
As two rigid transformations, to map ΔHJK to ΔLMN.
The first is a translation of vertex H to vertex L, and the second transformation is a rotation about point H.
Learn more about this concept here:
https://brainly.com/question/19121847?referrer=searchResults
#SPJ1
Answer:
B. a rotation about point H
Step-by-step explanation:
got it correct on my quiz
I NEED HELP ASAP ILL GIVE BRAINLIEST!
What is the probability of getting a sum of 7 when rolling two number cubes?
Answer:
1/6
Step-by-step explanation:
Answer:1\6
Step-by-step explanation:
HELP PLS! I need this FAST!
30 points and BRAINLIEST!
Answer:
36
Step-by-step explanation:
MC : BC : MB = 1 : √3 : 2
MC : BC = 1 : √3
12 : BC = 1 : √3
BC = 12 : 1/√3
BC = 12 × √3/1
BC = 12 × √3
BC = 12√3
MC : MB = 1 : 2
12 : MB = 1/2
MB = 12 : 1/2
MB = 12 × 2/1
MB = 12 × 2
MB = 24
AB = 2BD
AB = 2CD√3
AB = 2(½BC)√3
AB = 2(½ × 12√3) √3
AB = 2 × 6√3 × √3
AB = 12 × √9
AB = 12 × 3
AB = 36
The point-slope form of the equation of the line that passes through (–4, –3) and (12, 1) is y – 1 = y minus 1 equals 1/4 left-parenthesis x minus 12 right-parenthesis.(x – 12). What is the standard form of the equation for this line?
The equation in point slope form is y-1 = 1/4(x - 12)
Equation of a lineThe formula for calculating the equation of a line is expressed as;
y = mx + b
m is the slope
b is the intercept
Slope = 1+3/12+4
Slope = 4/16
Slope = 1/4
For the intercept
1 = 1/4(12) + b
b = 1 - 3
b = -2
Hence the equation in point slope form is y-1 = 1/4(x - 12)
Learn more on equation of a line here: https://brainly.com/question/18831322
#SPJ1
The standard form is:
4y - x = -8
How to get the standard form of the line?We know that the point-slope equation of the line is:
y - 1 = (1/4)*(x - 12)
Expanding the right side, we get:
y - 1 = (1/4)*x - 3
Now we can move the term with x to the left side:
y - (1/4)*x = +1 - 3
y - (1/4)*x = -2
Now we can multiply both sides by 4:
4y - x = -8
This is the standard form of the linear equation.
If you want to learn more about linear equations:
https://brainly.com/question/1884491
#SPJ1
Solving 8 problems per Minute, Fast Funn can finish his test in time. He was, however, working fast, solving 10 problems per minute. That is why he finished 6 minutes early. How many problems were on the text
The number of problems that were on the text was 240 problems.
What is an equation?An equation is an expression that shows the relationship between two or more variables and numbers.
Let x represent the total number of problems that were on the text, y represent the time to be spent, hence:
y = x/8
Also:
y - 6 = x/10
x/8 - 6 = x/10
x = 240
The number of problems that were on the text was 240 problems.
Find out more on equation at: https://brainly.com/question/13763238
#SPJ1
A 15 foot ladder is placed on the top of a wall. The distance from the bottom of the wall to the bottom of the ladder is 7 feet. Calculate the height of the wall.
The height of the wall from the question is 13.27ft
Pythagoras theoremThe theorem states that the square of the longest side is equal to the sum of square of other two sides.
From the given question
Hypotenuse (ladder length) = 15ft
Adjacent = 7feet
Required
Height of the wall H
According to the theorem
15² = 7² + H²
H² = 225 - 49
H² = 176
H = 13.27feet
Hence the height of the wall from the question is 13.27ft
Learn more on pythagoras theorem here; https://brainly.com/question/343682
#SPJ1
A student wrote the expression: 2(5x + 3) what are two expressions that are equivalent to the student's expression
Answer:
[tex]\frac{(20x+12)}{2}[/tex] and [tex]\sqrt{100x^2+36}[/tex]
Step-by-step explanation:
The expression 2(5x + 3) equals 10x + 6
One other way to get 10x + 6
[tex]\frac{(20x+12)}{2}[/tex]
finally, you could do:
[tex]\sqrt{100x^2+36}[/tex]
evalute the following integral.
Help me...step by step
Answer:
= ax + b ln x - c/x + C
Step-by-step explanation:
Recall:
integral a dx = ax + C
integral 1/x dx = ln x + C
integral x^(n) = [x^(n +1)]/(n + 1) + C
Also:
c = variable in this problem
C = constant you add when you integrate
Separate each term of the numerator and set it over the denominator.
integral (ax^2 + bx + c)/x^2 dx =
integral [(ax^2)/x^2 + (bx)/x^2 + c/x^2] dx
Simplify each term and separate into the sum of 3 integrals.
= integral (a dx) + integral (b/x dx) + integral (c/x^-2) dx
= ax + b ln x + (cx^-1)/(-1) + C
= ax + b ln x - c/x + C
what is the first quartile of the set of data 14,28,33,42,53,81,97
The first quartile of the data set is 28.
Determining the first quartileFrom the question, we are to determine the first quartile of the given data set
The first quartile or lower quartile, (Q1), is the value under which 25% of data points are found when they are arranged in increasing order.
The given data set is
14,28,33,42,53,81,97
In the given data set, the first quartile is 28.
Hence, the first quartile of the data set is 28
Learn more on Calculating first quartile here: https://brainly.com/question/9707857
#SPJ1
30 men can complete a job in 12 days if each man works 8 hours a day. if the job is to be completed with 24 men working at the same rate, how many hours must they work in a day
Answer:
15
Step-by-step explanation:
→ Write the ratio of men to days to hours
30 : 12 : 8
→ Write the new proportion
24 : x : 8
→ Find the multiple between 30 and 24
1.25
→ Multiply by 12
12 × 1.25 = 15
equation with a slope of -4 and goes through the point (-1,1)
[tex]\Large\maltese\underline{\textsf{A. What is Asked}}[/tex]
What's the equation with a slope of -4 that goes through (-1,1)? find it
[tex]\Large\maltese\underline{\textsf{B. This problem has been solved!}}[/tex]
The equation used, here is [tex]\bf{y-y1=m(x-x1)}[/tex].
[tex]\bf{y-1=-4(x-(-1)}[/tex] | simplify after putting in the information given
[tex]\bf{y-1=-4(x+1)}[/tex]
[tex]\rule{300}{1.7}[/tex]
[tex]\bf{Result:}[/tex]
[tex]\bf{=y-1=-4(x+1)}[/tex]
[tex]\boxed{\bf{aesthetic\not101}}[/tex]
When dividing the polynomial using synthetic division, which of the following setup boxes would be used?
The setup boxes in the synthetic division are (b)
How to determine the setup boxes?The dividend is given as:
x^3 + 4x^2 + x - 6
The divisor is given as:
x - 2
Set the divisor to 0
x - 2 = 0
Solve for x
x = 2
Remove the variables in the dividend
1 + 4 + 1 - 6
Remove the arithmetic signs
1 4 1 - 6
So, the setup is:
2 | 1 4 1 - 6
Hence, the setup boxes are (b)
Read more about synthetic division at:
https://brainly.com/question/12951962
#SPJ1
To prove that ΔAED ˜ ΔACB by SAS, Jose shows that StartFraction A E Over A C EndFraction = StartFraction A D Over A B EndFraction.
Triangle A E D is shown. Line segment B C is drawn from side A D to A E to form triangle A C B.
Jose also has to state that
The other equality which must be stated by Jose is that angles BAC and BAE are congruent and their measures are equal.
What other congruence statements must Jose state?It follows from the task content that Jose is trying to prove the congruence of both triangles by means of the Side-Angle-Side congruence theorem.
It therefore follows that since, Jose has identified that the ratio of corresponding sides are equal as indicated in the task content, the equality which Jose has to state is the angle congruence equality.
Read more on congruence theorem;
https://brainly.com/question/3168048
#SPJ1
the question is on the image
by the way the 20cm is meant to be 15cm
Answer:
2.36 liters
Step-by-step explanation:
The volume Janet wants is 1/3 of 1/2 of the volume of a sphere with radius 15 cm. The formula for the volume of a sphere is given.
ApplicationThe water volume is ...
V = (1/3)(1/2)(4/3π)(15 cm)³ = 750π cm³ ≈ 2356 cm³
There are 1000 cm³ in 1 liter, so Janet needs about ...
2356 cm³/(1000 cm³/L) = 2.356 L
Janet should put about 2.36 liters of water in the fish tank.
Answer:
it is all I could.
Hope it helps
What numbers go in the sqaures?
On the first two pairs you need to write 3 and 4, and 6 and 2.
On the second page we have:
1) 4
2) 2 and 7
3) 1
4) 1 and 3
5) 3.
What numbers go in the squares?
a) Here we just need to use scientific notation.
For the first case, the numbers that go in the exponent boxes are the same ones that go in the example, which are 4 in the first one and 2 on the second one.
Then, if we want the difference to be 29,400, then we can use 3 on the first box and 6 on the second. OR, because this is an absolute value, we can just invert those.
This is:
6 and 2 on the first two squares, and 3 and 4 on the second two squares.
b) Here we want to make perfect squares.
For example, on the first case we have:
x*2*2
We need to find the value of x such that this is a perfect square. Notice that we can rewrite this as:
x*2*2 = x*4
Then it only is a perfect square if x = 4.
For the second case:
14*x*y
This is only a perfect square if x*y = 14
Then we can use x = 2 and y = 7.
With similar reasoning, on the next box we have:
2*8*x
2*8 = 16, is already a perfect square, so x = 1.
The next one is:
x*3*y
Here we can define x = 3 and y = 1, so we get a perfect square.
Finally:
3*x
Here the only possible value of x is 3.
If you want to learn more about perfect squares:
https://brainly.com/question/1538726
#SPJ1
What is the solution to the system of equations {−2x+4y=1−4x+3y=12
The solution to the system of equation is ( -4.5 , -2)
What is a system of Equation ?A system of equation is a set of equations that have a common solution.
The set of equation given are
-2x +4y = 1
-4x +3y = 12
To find the solution , Elimination Method will be used
Multiplying equation 1 by 2 and then
Subtracting equation 1 by 2
-4x +8y = 2
-4x +3y = 12
+ - -
5y = -10
y = -2
Substituting this value to determine the value of x
-2x -8 = 1
-2x = 9
x = -4.5
Therefore the solution to the system of equation is ( -4.5 , -2)
To know more about System of Equation
https://brainly.com/question/12895249
#SPJ1
a factory uses 3/8 of a barrel of raisins in each batch of granola bars.yesterday the factory use 3/4 of a barell of rasins how many batches of granola bars did the factory make yesterday
Answer:
2
Step-by-step explanation:
3/4=6/8
(6/8)/(3/8)=2
Please help ill give whoever answers the best the brainliest answer :)))
Answer:
Distance on the graph is representing the distance from Michelle's home. On her morning jog, Michelle ran to the end of her street, turned around and jogged at a slower pace back home.
The process of evaluating a decision in the face of uncertainty by quantifying the likelihood and magnitude of an undesirable outcome is known as _____. Group of answer choices risk analysis regression analysis data mining decision tree analysis
The process of evaluating a decision in the face of uncertainty by quantifying the likelihood and magnitude of an undesirable outcome is known as risk analysis
Risk analysis is define as the the process of identifying and analyzing potential issues that could negatively impact key business initiatives or projects. This process is done in order to help organizations avoid or mitigate those risks.
So, The process of evaluating a decision in the face of uncertainty by quantifying the likelihood and magnitude of an undesirable outcome is known as risk analysis
Learn more about RISK ANALYSIS here https://brainly.com/question/1224221
#SPJ4