Answers
6x + ( 3x - 9) = 90°( being complementary angles )
6x+3x -9 = 90°
9x = 90° + 9
x = 99 / 9
x = 11
Related Questions
What is the correct first step to solve this system of equations by elimination?
(2x−3y=−6) (x+3y=12)
What is the solution? Write the ordered pair using integers or fractions.
Answers
[tex]\bold{\huge{\pink{\underline{ Solution }}}}[/tex]
[tex]\bold{\underline{ Given }}[/tex]
We have given two linear equations that is 2x - 3y = -6 and x + 3y = 12 .[tex]\bold{\underline{ To \: Find }}[/tex]
We have to find the value of x and y by elimination method.[tex]\bold{\underline{ Let's \: Begin }}[/tex]
[tex]\sf{ 2x - 3y = -6 ...eq(1)}[/tex]
[tex]\sf{ x + 3y = 12 ...eq(2)}[/tex]
Multiply eq( 2 ) by 2 :-
[tex]\sf{ 2( x + 3y = 12 )}[/tex]
[tex]\sf{ 2x + 6y = 24 }[/tex]
Subtract eq(1) from eq(2) :-
[tex]\sf{ 2x + 6y -( 2x - 3y) = 24 -(-6)}[/tex]
[tex]\sf{ 2x + 6y - 2x + 3y = 24 + 6 }[/tex]
[tex]\sf{ 9y = 30 }[/tex]
[tex]\sf{ y = 30/9}[/tex]
[tex]\sf{\red{ y = 10/3}}[/tex]
Now, Subsitute the value of y in eq( 1 ):-
[tex]\sf{ 2x - 3(10/3) = -6 }[/tex]
[tex]\sf{ 2x - 10 = -6 }[/tex]
[tex]\sf{ 2x = -6 + 10}[/tex]
[tex]\sf{ x = 4/2}[/tex]
[tex]\sf{\red{ x = 2}}[/tex]
Hence, The value of x and y is 2 and 10/3
Write the equation of the line that passes through the points (3, 2) and
(-8,4). Put your answer in fully simplified point-slope form, unless it
is a vertical or horizontal line.
Answers
Answer:
y= -2/11x + 28/11[tex]\frac{-2}{11}x + \frac{28}{11}[/tex]Multiple Choice, A standard circus ring has a radius of 6.5 meters, Which of the following is the approximate circumference of the circus ring? A. 13 meters B. 20.4 meters C. 40.8 meters D. 132,7 meters
Answers
Answer:
C 40.8 meters
Step-by-step explanation:
circumference equals diameter, aka 2r, times 3.14, aka pi
have a good day friend :)
What is the end behavior of the graph of f(x) = – 0.5x2 – 3x – 4?
Answers
please help me i dont know how to solve
Answers
Answer:
31.7079632679 round it up and you get 32
Step-by-step explanation:
pi times 25 +16 because 8 times 2 is the area of the base
so basically the equation is
pi x 25 + 16=
pi x 25 is about 15.7079632679 if my calculations are correct
and then 15.7079632679 + 25 and we get 31.7079632679
Answer:
A=264 pi
? Is 264
Hope this helps!
Help me please i need it
Answers
Step-by-step explanation:
what are you looking for
drop ur comment below
the cost of a meal is split evenly between between alania and her two friends.they determine that each person owes $ 14.68. how much was the entire meal?
write the equation:
and solution :
Answers
A city has current population of 55,000, and it is growing at a rate of 2% each year. What is the approximate predicted population after 7
years?
OA. 8,178
B. 14,000
C. 63,178
D. 142,075
Answers
1 + 1 express as fraction
Answers
Answer: 2 over 1
Step-by-step explanation:
1+1=2
However we want this as a fraction
Any whole number as a fraction is just over one
Therefore the final answer is 2 over 1
You’re welcome Kaeya!
Answer: it’s 2 over 1 mate
Step-by-step explanation: you’re welcome
Let a # b = a 2– b 2 . What is the value of (3 # 2) – (4 # 3)?
Answers
Answer:
-6
Step-by-step explanation:
[tex](3 \times 2) - (4 \times 3) \\ (6) - (12) \\ 6 - 12 \\ = - 6[/tex]
investment after 20 years equals 130000. original investment was 50000. What was the interest rate?
Answers
Step-by-step explanation:
The formula states that
S. I=P*R*T/100
R=S. I*100/P*T
Simple Interest= Amount - principal
Simple Interest = 130000 - 50000
Simple Interest = 80000
R= 80000*100/50000*20
R= 800000/100000
R=8%
Samira babysits for 4.5 hours and earns $22.50. How much does she earn per hour?
P
Answers
Answer:
Samira earns $5 dollars per hour.
Step-by-step explanation:
$22.50 divided by 4.5 hours = $5 dollars
hi please help!! i will mark as brainliest if i can
Answers
Answer:
3.1x + 2.2x - 2.4y - 1.4y + 1.9 - 3.4
Step-by-step explanation:
3.1 x - 2.4 y + 1.9 + 2.2x - 1.4y - 3.4
→ Collect all the like terms
3.1x + 2.2x - 2.4y - 1.4y + 1.9 - 3.4
The graph shows the number of game consoles sold in millions since 2009.
Game Console
9
(0, 25.5)
25
20
(1, 15.3)
Number of Game Consoles Sold
(millions)
15
10
(2, 9.18)
0
2 3 4 5 6 7
Number of Years Since 2009
Based on this information, which function best models the number of game consoles sold in
millions x years since 2009?
A 9(x) = 0.6(25.5)
09(x) = 25.5(0.6)
c g(x) - 6.12(25.5)
D 9(x) = 25.516 Y
Answers
The graph is an illustration of an exponential function
The equation of the graph is: [tex]y = 25.5 * 0.6^x[/tex]
How to determine the equation of the graphFrom the graph, we have the following ordered pairs
(x,y) = (0, 25.5), (1, 15.3) and (2, 9.18)
An exponential function is represented as:
[tex]y = ab^x[/tex]
When x = 0, we have:
[tex]25.5 = ab^0[/tex]
[tex]a = 25.5[/tex]
When x = 1, we have:
[tex]15.3 = ab^1[/tex]
[tex]15.3 = ab[/tex]
Substitute 25.5 for a
[tex]15.3 = 25.5b\\[/tex]
Solve for b
[tex]b = 0.6[/tex]
So, the exponential equation is:
[tex]y = 25.5 * 0.6^x[/tex]
Hence, the exponential equation of the graph is: [tex]y = 25.5 * 0.6^x[/tex]
Read more about exponential functions at:
brainly.com/question/11464095
g(x) =25.5(0.6)ˣ function best models the number of game consoles sold in millions x years since 2009?
From the given graph we can observe three ordered pairs which are (0, 25.5), (1, 15.3) and (2, 9.18).
We have to find the function which best models the number of game consoles sold in millions x years since 2009.
This we can find by using exponential function.
y=abˣ
When x = 0, we have:
a=25.5
When x=1, then y should be 15.3
15.3=ab
Substitute 25.5 for a
15.3=25.5b
Divide both sides by 25.5:
b=0.6
So the function is g(x)=25.5(0.6)ˣ
To learn more on Functions click:
https://brainly.com/question/30721594
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The sum of the digits of an odd 2-digit number is 1.What is the number?
Answers
Answer:
-23
Step-by-step explanation:
Negative 2 plus positive 3 equals 1.
-2 + 3 = 1
I hope this helps you out :)
Write AB with A(-9, 2) and B (-1,
6) in component form.
Answers
The written form of vector AB in component form is; (4,8)
Vectors in component formFrom the given points;
The magnitude of vector AB is given as;AB = √((-1-(-9))² + (6-2)²AB = √80 = 4√5From evaluation, the angle direction of AB is;
Hence, the x and y components of vector AB are;
AB(x) = 4√5 × (1/√5) = 4AB(y) = 4√5 × (2/√5) = 8.Read more on component of vectors;
https://brainly.com/question/2142917
when asked for a measurement of a thing why do we not give a negative value of a number?
Answers
Answer:
See below.
Step-by-step explanation:
A measurement could be a distance or a length, or a weight, or a volume. All those quantities are expressed as positive numbers.
For example, what is the distance from New York to Los Angeles?
Answer: 2,800 miles
What is the length of a book?
Answer: 8 inches
How much does John weigh?
Answer: 150 lb
All those numbers are positive.
There is one measurement that is often a negative number. That is a temperature.
Jill eFind the value of the expression 4a4 − 2b2 + 40 when a = 2 and b = 7.
Answers
Answer:
6
Step-by-step explanation:
substitute the given values into the expression
4[tex]a^{4}[/tex] - 2b² + 40
= 4[tex](2)^{4}[/tex] - 2(7)² + 40
= 4(16) - 2(49) + 40
= 64 - 98 + 40
= - 34 + 40
= 6
how can i solve -8/x-11=-2?
Answers
Answer:
See below
Step-by-step explanation:
-8/x - 11 = -2
First add 11 to both sides
-8/x - 11 + 11 = -2 + 11 simplifies to -8/x = 9
Now multiply both side by x
( -8/x) X ( x ) = ( 9 ) X ( x ) which simplifies to -8 = 9x
Divide each side by 9
-8/9 = (9x)/9 which simplifies to -8/9 = x or x = - 8/9
I need help please help
Answers
Answer:
Show similarity between triangle WXZ and triangle VXY then write XY/XZ=VY/WZ
The reason is: The ratio of corresponding sides of similar triangle are equal.
The circumference of a circle is 23π inches. What is the radius of this circle?
Answers
Answer:
132.25π m²
Step-by-step explanation:
pls help plsssss due in a few minsss
Answers
6. x=1 , y=2
7. x=-4 , y=5
8. Infinitely Many Solutions
A function is represented by the graph.
Complete the statement by selecting from the drop-down menu.
The y-intercept of the function y = 3x + 2 is
Choose...less than, greater than, or equal to
the y-intercept of the function represented in the graph.
points passing (0,2) (2,6)
Answers
Rita makes and sells necklaces. The materials to make each necklace cost $2. 75. Last week she made 8 necklaces and wants to make a total profit of $78. Using the equation 8 (x 2. 75) = 78, Rita determined that she needs to sell each necklace for $7 to make a total profit of $78. Which error did Rita make? Although she has the correct equation, she needs to sell each necklace for $12. 50. Although she has the correct solution, she should have used the equation 8 (x minus 2. 75) = 78. The equation should be 8 (x minus 2. 75) = 78, and she needs to sell each necklace for $12. 50. The equation should be StartFraction 1 over 8 EndFraction (x minus 2. 75) = 78, and she needs to sell each necklace for $75. 25.
Answers
Profit function gives the profit earned for given input. Thus, Rita has correct solution, that is, she needs to make 7 necklace to get $78 profit.
How to find the value of unknown variable in a linear equation?It might not be always possible. But for simple cases, we can try using addition or subtraction or such operations in linear equations if there is single variable with single equation.
For the given case, the profit $78 for x necklace manufactured is
[tex]8(x + 2.75) = 78[/tex]
(remember that many times, when using letters or symbols, we hide multiplication and write two things which are multiplied, close to each other. As in [tex]2 \times (x + 3) = 2(x + 3)[/tex])
Solving this equation, we get:
[tex]8(x + 2.75) = 78\\\\\text{Dividing by 8 on both the sides}\\\\(x + 2.75) = \dfrac{78}{8} = 9.75\\\\\text{Subtracting 2.75 from both the sides}\\\\x = 9.75 - 2.75 = 7[/tex]
Rita has correct solution, that is, she needs to make 7 necklace to get $78 profit.
Learn more about solving linear equations here:
https://brainly.com/question/6196569
Answer:
C
Step-by-step explanation:
Help me asap i don’t know how to do this please help me
Answers
4x+18=7x-27
x=15
180-(4x+18)=4y+2
102=4y+2
y=25
Angle 1=4(15)+18=78 degrees
Angle 4=4(25)+2=102 degrees
I need help please if anyone can help that would be great
Answers
Answer:
f = 2.75p
Step-by-step explanation:
You can see that the amount of flour for 6 cakes is double the amount for 3 cakes, so the amount of flour is proportional to the number of cakes. An equation for a proportional relationship will have the form ...
f = kp
We can find the value of k from any column in the table.
8.25 = k(3) . . . . using the values in the first column
8.25/3 = k = 2.75 . . . . . divide by 3
The equation is ...
f = 2.75p
_____
Additional comment
If the input doubles, but the output does not, then the relationship is not proportional. We ordinarily expect recipes to have proportional relationships.
4(2x + 3) ÷ 5y From the expression above, provide an example of each of the following: sum, term, product, factor, quotient, and coefficient. If any are not present, write "not present." (6 points)
Answers
Answer:
sum: 2x + 3 but you cant add not like terms
Term 2x + 3
Product 8x+12
factor 2,x ;5,y; 4,(2x+3)
quotient 4(2x+3) ÷ 5 = 12 ÷ 5y
coefficient = 2 and 5
Step-by-step explanation:
sum: 2x + 3 but you cant add not like terms
Term 2x + 3
Product 8x+12
factor 2,x ;5,y; 4,(2x+3)
quotient 4(2x+3) ÷ 5 = 12 ÷ 5y
coefficient = 2 and 5
Class criteria are a set of articulations of significant value or behavior that contribute to dynamic and impartial support in the research hall. You set assumptions for everyone, adults, and understudy around the classroom. Class criteria are expressed in an exciting atmosphere, constant in all situations, and very few. Class standards support undergraduate students and provide them with the opportunity to take responsibility for their surroundings and pursue the prosocial benefits of commitment, respect, sanity, attention and support. They support equitable interaction, a commitment to arithmetic, and the creation of a positive class of climate. At the beginning of the school year, we will establish the standards for study rooms and develop them consistently.
1. Norms- what, why and when?
2. How do we set them?
3. How do we reinforce them?
4. Do you agree with the sample norms given in the article?
5. Take a position and defend your position in reference to the norms suggested in the article.
Answers
Answer: Class room dynamics includes student behavior, emotions and imagination. It also includes teacher's ways of presenting academic materials and student interactions. It helps in creating a positive class room culture. Effective teaching and learning cannot take place in a poorly managed classroom.
Step-by-step explanation:
HELP! Find the value for x.
Answers
Answer:
x=6
Step-by-step explanation:
6 +2 is 8
2(6) - 9 = 3
8 times 3 is 24
Mark Brainliest :)
One day ill get the hang of it but for now i'm asking for help
Answers
Answer:
37.68
Step-by-step explanation:
circumference is diameter, which in this case is 12,times pi which I always simplify to 3. 14
12 times 3. 14 is approximately 37cm so that is why I have given this answer
brainliest?
Option B) is correct.
Here, we are given –
Diameter of circle is = 12 cm [tex]\star{\underline{\boxed{\sf{\pink{Diameter = 2 \times Radius }}}}}[/tex]Let's find it's radius first.
[tex]\qquad[/tex][tex] \sf \longrightarrow Radius = \dfrac{Diameter }{2} [/tex]
[tex]\qquad[/tex][tex] \sf \longrightarrow Radius = \dfrac{12 }{2}[/tex]
[tex]\qquad[/tex][tex] \sf \longrightarrow Radius = \cancel{\dfrac{12 }{2}}[/tex]
[tex]\qquad[/tex][tex] \bf \longrightarrow Radius = 6 \: cm[/tex]
We know that–
[tex]\qquad[/tex][tex] \pink{\bf \longrightarrow Circumference \: of \: circle = 2\pi r}[/tex]
[tex]\qquad\qquad\quad\underline{\sf{Substituting \ Values \ :}}[/tex]
⠀⠀⠀━━━━━━━━━━━━━━━━━━━━━━━━━━
[tex]\qquad[/tex][tex] \sf \longrightarrow Circumference_{(Circle)} = 2 \pi r[/tex]
[tex]\qquad[/tex][tex] \sf \longrightarrow Circumference_{(Circle)} = 2 \pi \times 6[/tex]
[tex]\qquad[/tex][tex] \sf \longrightarrow Circumference_{(Circle)} =2 \times 3.14\times 6[/tex]
[tex]\qquad[/tex][tex]\pink{ \bf \longrightarrow Circumference_{(Circle)} = 37.68 \: cm }\\[/tex]
Henceforth, circumference of the given circle will be 37.68 cm.