Please help with these 3 pretty easy problems and explain how you got it!!! 100 POINTS AND BRAINLIEST!!!! Serious answers please..
Answers
Answer:
Step-by-step explanation:
1)
(x-3)/18=12/9, cross multiply
9(x-3)=18(12)
9x-27=216, add 27 to each side
9x=243, divide each side by 9
x=27
2)
(x-16)/(x+6)=3/5, cross multiply
5(x-16)=3(x+6)
5x-80=3x+18, subtract 3x from each side
2x-80=18, add 80 to each side
2x=98, divide each side by 2
x=49
3)
Since the triangles are similar we can say that
25/(4x-1)=10/(x+5), cross multiply
25(x+5)=10(4x-1)
25x+125=40x-10, subtract 40x from each side
-15x+125=-10, subtract 125 from each side
-15x=-135, divide each side by -15
x=9
here are the answers!
1)
(x-3)/18=12/9, cross multiply
9(x-3)=18(12)
9x-27=216, add 27 to each side
9x=243, divide each side by 9
x=27
2)
(x-16)/(x+6)=3/5, cross multiply
5(x-16)=3(x+6)
5x-80=3x+18, subtract 3x from each side
2x-80=18, add 80 to each side
2x=98, divide each side by 2
x=49
3)
Since the triangles are similar we can say that
25/(4x-1)=10/(x+5), cross multiply
25(x+5)=10(4x-1)
25x+125=40x-10, subtract 40x from each side
-15x+125=-10, subtract 125 from each side
-15x=-135, divide each side by -15
x=9
Related Questions
can somebody help me with this question
Answers
Answer: C
Step-by-step explanation:
The area of a circle is ∏r2- (Pi)(Radius)-squared
The Answer is C
maths help please!!!!!!
Answers
Answer:
VW = √2
Step-by-step explanation:
y = x+1
x²+y²+2x+2y+1=0 (x²+2x+1) + (y²+2y+1) = 1
(x+1)² + (y+1)² = 1 : Circle: (x-h)² + (y-k)² = r² Center (O): (h , k) = (-1 , -1) r = 1
solve for roots: x²+(x+1)²+2x+2(x+1)+1=0
2x² + 6x + 4 = 0 x²+3x+2=0
(x+1)(x+2)=0
x = -1 or x = -2
y = 0 or y = -1
V and W: (-1 , 0) and (-2 , -1) forms a 90° center angle
√vw = √1²+1² = √2
solve the inequality for n.
14 < n - 3
Answers
Answer:
n > 17
Step-by-step explanation:
Add 3 on both side: n - 3 + 3 > 14 + 3
--> n > 17.
If it is helpful, plz give me Brainliest.
Answer:
n>17
Step-by-step explanation:
14<n-3
move the terms
-n<-3-14
calculate
-n<-17
change the signs and you get n>17
What shapes have a trapezoidal cross section
Answers
Please tell me or explain how u got the answer
Answers
Answer:
C
Step-by-step explanation:
like terms are terms that are the same, so in c its 7x and 9x. so when you add them it will be 16x, or you can multiply them or do whatever you want with them
which of the following is the correct factorization of the trinomial below -7x^2+5x+12
Answers
It’s always good to know the several ways to solve these problems, but one of the easiest and fastest would be the box method.
The box method involves you finding you a, b, and c values in a quadratic equation. It goes as follows, Ax^2+bx+c. When doing the box method, you multiply only your A and c. In this case -7*12 which gives you -84. Next you just find you b value (which is 5).
Now comes the trick part, you need to find the factors of -84 that ADD UP to equal 5. Therefore we just find the factors of 84 by listing them (find them for 84 then determine with the negative later). So we have 2, 42/ 3,28/ 4/21/ 6,14 / and 7,12. It becomes easier to find your factor, but 7 and 12 can equal to 5 in this condition due to 84 being negative, therefore one of the factors will be negative. By making 7 negative we can make 12+-7 equal to our b value of 5.
Now that we have the factors, we put them into fractions. We put them in the form that a would be on top and the factor would be on the bottom. Therefore a/(factor). In this case is would be -7/12 and -7/-7. With these fractions, we then simplify as much as we can, -7/12 cannot be simplified so it stays the same, but -7/-7 can be simplified to 1/1.
These fractions then become you FACTORS of your quadratic equation, in which case the a value in the fraction adds x to it, therefore it would be -7x+12 and x+1. The correct would would be (-7x+12)(x+1).
Answer:
-1(7x-12)(x+1)
Step-by-step explanation:
Ape s* x
How many solutions does the system have?
Answers
Answer:
you have exactly one
Step-by-step explanation:
hope it helped
Solve using the quadratic formula. (Identify a, b, and c. Write the
formula. Show the substitution step.
8n^2 + 4n -2 = 0
Answers
Answer:
Step-by-step explanation:
Here a = 8, b = 4 and c = -2. The discriminant here is b^2 - 4ac, which, when the above coefficients are substituted, results in:
discriminant = (4)^2 - 4(8)(-2), or 16 + 64, or 80.
The solutions are:
-(4) ± √80 -4 ± 4√5 4(-1 ±√5) -1 ± √5
n = ------------------ = ----------------- = --------------- = --------------
2(8) 16 4^2 4
What property is shown below?
129 × 1 = 129
OA.
Commutative Property of Multiplication
OB.
Associative Property of Multiplication
OC. Identity Property of Multiplication
OD
Identity Property of Addition
Answers
Answer:
Associative property of multiplication
Step-by-step explanation:
Help me!?!
I’ll give you 5 stars?!
Answers
Answer:
i think its b 68 because if you add al the sides that what i got
Step-by-step explanation:
18 + 18 + 10 + 10 + 6 + 6= = 68
Answer:
1080 or 68
Step-by-step explanation: 10*18*6=1080
10+10+18+18+6+6=68
2) Dan is playing a game that involves the spinners shown below.*
10 points
Spinner 1
Spinner 2
Spinner 3
6
2
Greon Red
Blue Yellow
5
3
F
Which durt shows all of die possible combinations of an even number on Spinner 1,
Red or Blue on Spinner 2, and a B on Spinner 3?
A
с
Spinner 1 Spinner 2 Spinner 3
2 Red B
4
Red
B
6 Red B
2 Blu B
Blue B
6 Blue B
Spinner 1 Spinner 2 Spinner 3
2
Rod B
2 Red B
Red
4 Blue
B
6 Blue B
6 Blue B
B
D
CC
Spinner 1 Spinner 2 Spinner 3
1
Red B
2. Blue B
3 Red B
Blue B
5 Rod
B
6
Blue B
Spinner 1 Spinner 2 Spinner 3
2 Red
4 Red
B
6 Red А
2 Blue B
Blue А
6
Blue B
Answers
Answer:
1 spanner 2 greoun red 3 blue 4 .... 6 blue
Solve for A
-2a -12 < -8
How do I do this step by step?
Answers
Help I don’t know this and I really need help you don’t have to explain them if you want :)
Answers
Answer:
1.) false, was rotated 90 degrees clockwise
2.) false, was flipped over y-axis
3.) true
Step-by-step explanation:
Henry went to an amusement park with $100.00 and spent all of it. He spent of the money on parking. He spent $42.50 on admission to the park. He spent 20% of the money on food. He paid a $12.75 fee for admission into a water park located inside the amusement park. He spent the remainder of his money on games that cost $1.75 each. How many games did Henry play?
Answers
Answer:
19 games
Step-by-step explanation:
Henry went to an amusement park with $100.00 and spent all of it.
Starting amount = $100.00
He spent $42.50 on admission to the park.
Amount left = $100.00 - $42.50
Amount left = $57.5
He spent 20% of the money on food.
Amount spent = 20% of amount left ($57.5) = $11.5
Amount left = $57.5 - $11.5 = $46
He paid a $12.75 fee for admission into a water park located inside the amusement park.
Amount left = $46 - $12.75
Amount left = $33.25
He spent the remainder of his money on games that cost $1.75 each. How many games did Henry play?
Number of games = Amount left / Cost per game
Number of games = $33.25 / $1.75 = 19
The percent of sales tax is 8% if the skateboard cost $98 what is the total amount you will pay including tax?
Answers
Answer:
The total amount of tax is $7.84, so add that to $98 and you get $105.84 dollars total.
Step-by-step explanation:
Which term matches the definition? one that can be answered with
data and for which it is anticipated that the data collected to answer the
question will vary.
A. symetrical graphs
B. skewed right
C. skewed left
D. statistical question
Answers
The sides of the base of a right square pyramid and its slant height are tripled. What is the surface area of the larger pyramid divided by the surface area of the smaller pyramid? A. 3 B. 6 C. 9 D. 12
Answers
Answer:
Step-by-step explanation:
If the base length and slant height are multiplied by 3, the surface area is multiplied by 3² = 9
i need help T^T ill mark brainliestT^T
Answers
Answer:
it's A (I'm sure)
Step-by-step explanation:
........
Answer:
option A is correct 2:10=14:10
HURRY
An angle measures 47°. What are the measures of the angle’s complement and supplement? A. complement, 43°; supplement, 133° B. complement, 133°; supplement, 43° C. complement, 53°; supplement, 143° D. complement, 143°; supplement, 53°
Answers
The supplementary angle of 47 degrees is 133 degrees
Answer:
A.) complement, 43°; supplement, 133°
Step-by-step explanation:
A compliment angle is any angle(s) that adds up to 90°
A supplement angle is any angle(s) that adds up to 180°
For compliment:
90 - 47 = 43
For supplement:
180 47 = 133
Therefore, the answer would be A.
-kiniwih426
How do you evaluate fuctions?
Answers
Step-by-step explanation: To evaluate functions substitute the given number or expression function's variable.
Ms. White is going to the grocery store to buy peamut butter for $3.50 a jar. She's going to the store with
$35 but needs to save $15 for tomorrow.
Answers
Answer:
5. your question wasnt finished so there was not answer.
Step-by-step explanation:
Im guessing your question was how many jars can she by?
If so then
35 - 15 is 20
20 divided by 3.50 is 5.714
So she only has enough money left to buy 5 whole jars
Which points are reflections of each other across the y-axis?
8
-2
2
4
8
8
X
--
-B
(-7, -3) and (7.–3)
(-5, 4) and (5. -4)
( 71 RX and X
Answers
Answer:
A. ( -7, -3) and ( 7, -3)
Step-by-step explanation:
I looked at the picture and I know it is because I already learned this
Please help thanks I appreciate it! :)
Answers
Answer:
Step-by-step explanation:
120 x .6 =72
120-72 = 48
48x .6 = 28.8
72+28.8 = 100.8
She sold approximately 101 cups of coffee
write the equation of a line that has a slope of 3x - 4y = 12 and passes through the point (8, 8)
Answers
3x - 4y = 12
-4y = 12 - 3x
y = -3 + ³/₄ x
y = ³/₄x - 3
so the slope is ³/₄
now the equation is :
y-y₁ = m (x-x₁)
y-8 = ³/₄ (x-8)
y-8 = ³/₄ x - 6
y = ³/₄ x -6 + 8
y = ³/₄x + 2
Please help ?? I don’t remember how to do this
Answers
Answer:
i hope it help you
Step-by-step explanation:
1) x not equal 3
2) x not equal 5 and greater than or equal 3
3) x greater than or equal 3
4) x not equal 5
The time required to complete a job varies inversely as the number of people working.
It took 3 hours for 8 electricians to wire a building. How long would it have taken 6 electricians to do the job?
Answers
You like math then here
Answers
Answer:
-8b + 9 - 5k
Step-by-step explanation:
I am assuming the blue highlighted portion is your answer, and is not a part of the initial question
(-4b + 15 - 7k) - (6 + 4b - 2k)
Combine like terms
-4b - + 4b
Negative + Positive = Negative
-4b - 4b = -8b
15 - 6 = 9
-7k - - 2k
Negative + Negative = Positive
-7k + 2k = -5k
Put them all together:
0b + 9 - 5k
Simplify
-8b + 9 - 5k
I got the same answer as you (just in a different order)
A small plant manufactures riding lawn mowers. The plant has fixed costs of GHC48,000 per day and a variable cost of GHC1,400 per unit produced. The mowers are sold for GHC1,800 each. The cost and revenue functions are in that order and , where is the total number of mowers produced and sold each day. How many units must be manufactured and sold each day for the company to break even?
Answers
Answer:
120
Step-by-step explanation:
The break-even point is the point where revenue =cost
48,000+ 1400x = 1800x
48000=400x
X=48000/400
X=120
Equilibrium quantity is 120 mowers
Find the slope.
Find the y-intercept
Write the equation (y=mx+b)
At Philip’s Phones you can get a new cell phone plan for $45 a month plus $30 activation fee.
Answers
x=months
y= fee
9514 1404 393
Answer:
slope: 45y-intercept: 30equation: y = 45x + 30Step-by-step explanation:
The slope is the cost per month. (A slope is often expressed as a ratio: dollars per month, in this case.) The slope is 45.
The y-intercept is the value that obtains when the number of months (in this case) is zero. It is the activation fee, 30. The y-intercept is 30.
__
The equation in slope-intercept form is ...
y = mx + b . . . . . where m is the slope and b is the y-intercept
Using the above numbers, the equation is ...
y = 45x + 30
Enter the exponential function using t (for time) as the independent variable to model the situation. Then
find the value of the function after the given amount of time.
The value of a textbook is $63 and decreases at a rate of 14% per year for 13 years.
The exponential function that models the situation is y = 63(0.86).
After 13 years, the value of the textbook is $
Answers
Answer:
An exponential function is given by;
f(x)=ba^x
where a is any value greater than 0,
b is the intial value
when a>1 then f(x) is defined as an exponential growth
when a<1 then f(x) is defined as an exponential decay
From the our function;
f(t)=15000(0.86)^t
a=0.86<1
b=15000
since a<1, the function will be an exponential decay.
Step-by-step explanation: