Answers
Answer:
x=16
Step-by-step explanation:
If the triangles are similar then their sides are in proportion.
Set the proportions 20/(3x+8)=(x-1)/(x-1+27)
solve for x,
cross multiply
20(x+26)=(x-1)(3x+8),
distribute
20x+520= 3x² +8x-3x-8,
combine like terms
3x²-15x-528=0
solve using quadratic formula
x=16 and x= -11 reject because we cannot have negative measurements
Related Questions
simplify the expression 4x+3 (5y+x)
Answers
Answer:
7x + 15y
Step-by-step explanation:
4x+ 3 ( 5y + x)
Step 1: remove the brackets by multiplying 3 with (5y + x)
4x+ 15y + 3x
Step 2: add the 4x and 3x
7x + 15y
Answer:
[tex]=7x+15y[/tex]
Step-by-step explanation:
[tex]4x+3\left(5y+x\right)[/tex]
[tex]3(5y+x)[/tex]
[tex]15y+3x[/tex]
[tex]=4x+15y+3x[/tex]
[tex]4x+15y+3x[/tex]
[tex]7x+15y[/tex]
[tex]=7x+15y[/tex]
Point A located at -11 and -7 on the coordinate plan is reflected over the X axis to form point B.Then point B is reflected over the y axis to form point C. What are
the coordinates of points B and C
Answers
Answer:
The coordinates of B are (-11,7)
The coordinates of C are (11,7)
Step-by-step explanation:
Reflection of Points
Given a point (x,y), it can be reflected in several ways. Two of the most-used are reflection over the x-axis and reflection over the y-axis.
When the point is reflected over the x-axis, the x-coordinate is unchanged, and the y-coordinate is inverted: (x,y) -> (x,-y).
When the point is reflected over the y-axis, the y-coordinate is unchanged, and the x-coordinate is inverted: (x,y) -> (-x,y).
Point A is located at (-11,-7). It's reflected over the x-axis to form point B whose coordinates are (-11,7).
Then, point B is reflected over the y-axis to form point C with coordinates (11,7).
The coordinates of B are (-11,7)
The coordinates of C are (11,7)
whats -5 5/8 divided by -4 7/12 as a fraction?
Answers
-5 5/8 = - 45/8
-4 7/12 = - 55/12
Remember, when you divide by a fraction, you take its reciprocal and multiply it:
(-48/8) / (-55/12) = (-48/8) x (-12/55)
Simplify the fraction:
72/55
I think this is the answer.
Can the intersection of a plane and a line segment be a ray ?
Answers
Answer:
No, it can not. I searched Brainly and people have asked this question before which always ended in the same answer, no.
Step-by-step explanation:
please help me limited time
Answers
Answer:
its 1
Step-by-step explanation:
Answer:
its number one
Step-by-step explanation:
thank you and I'm sure
Find the value of x. Then find the angle measures of the triangle.
3x°
40°
Sum of angle
measures: 180°
Answers
-40. -40
——————————-
4x. 140
—. ——-
4. 4
x = 35
Answer:
x=35°
3x= 105°
Step-by-step explanation:
[tex]40 + 3x + x = 180[/tex]
[tex]40 + 4x = 180[/tex]
[tex]4x = 180 - 40[/tex]
[tex]4x = 140[/tex]
[tex]x = \frac{140}{4} [/tex]
[tex]x = 35[/tex]
[tex]3x = 3(35) \\ 105[/tex]
Use the percent proportion.
1. What number is 120% of 60?
A 20
B 72
C 7.2
D 2
Answers
Answer:
72
Step-by-step explanation:
use a percentage calculator! Hope this helped! <3
3(x+5)=15
A.3
B.0
C.1/3
Answers
Answer:
x=0
Step-by-step explanation:
letter B
Answer:
B
Step-by-step explanation:
Take the three outaide the parentheses and distribute to both terms inside the parentheses. You would then get 3x+15= 15
subtract 15 from the left and right.
3x=0
Which means that x=0/3
So x=0
What is x- value of point A
A or B?
Answers
how coordinates change when we add or subtract outside the function?
Answers
Answer:
if c is positive, the graph is shifted up. If c is negative, the graph is shifted down. Informally: Adding a positive number after the x outside the parentheses shifts the graph up, adding a negative (or subtracting) shifts the graph down.
Step-by-step explanation:
hope this helps
What is the Increasing Interval?
What is the Decreasing Interval?
What is the Maximum?
What is the Minimum?
What is the Axis of Symmetry?
Answers
Answer: The decreasing interval is
Step-by-step explanation:
Answer:
The decreasing interval is
Step-by-step explanation:
The equation P = 2m + 15 represents the price P (in dollars) of a bracelet, where m is the cost of the materials (in dollars). The price of a bracelet is $115. What is the cost of the materials? Explain your reasoning.
Answers
Answer:
50
Step-by-step explanation:
115 = p
115 = 2m + 15
-15 -15
100 = 2m
/2 /2
50 = m
If you take away like I did in this method it will get you answer (backwards PEMDAS)
You have point D (4, 2) that is rotated 180 degrees about the origin, what are the coordinates of D'? Type answer as an ordered pair: (x, y)
Answers
Answer:
-4,-2 I think
Step-by-step explanation:
what are some strategies for rational numbers.
Answers
Answer:
Simplify
Step-by-step explanation:
Which of the following is a true statement about polygons?
A) Each line segment intersects exactly two other line segments
B) Each line segment intersects at least two other line segments
C) Each line segment intersects exactly one other line segment
D) Each line segment intersects at least one other line segment
Will mark as brainliest if correct!!
Answers
Answer:
A
Each side must intersect exactly two others sides but only at their endpoints. The sides must be noncollinear and have a common endpoint.
y varies inversely with x. y=15 when x=10, find y when x=5
Answers
=
25
Explanation:
y
=
k
x
;where
x
and
y
are variables and
k
is constant
or
5
=
k
10
or
k
=
5
(
10
)
or
k
=
50
So Equation becomes
y
=
50
x
When
x
=
2
y
=
50
2
or
y
=
25
Find the value of x that makes m ∥ n.
Answers
Answer:
x=60
Step-by-step explanation:
X+2x=180degree because it is co interior angle
3x=180
X=180/3
X=60.
Verification
X+2x=180
60+2(60)=180
60+120=180
Which points are separated by a distance of 5
Answers
Answer:
A
Explanation
6-1=5
3-3=0
0+5=5
help idk how to do math
use the distributive property
Answers
Answer:
Distributive property is when you multiply or add the numbers in the parentheses equally to the number outside the parentheses.
That probably isn't a good answer, here's what I found on google:
To “distribute” means to divide something or give a share or part of something. According to the distributive property, multiplying the sum of two or more addends by a number will give the same result as multiplying each addend individually by the number and then adding the products together.
Step-by-step explanation:
I'll do #10 as an example:
(x-5)y
distribute the numbers- y(x)-y(5)
without the parentheses- yx-y5
you can't really get an answer by multiplying a number and a variable, or a variable and a variable, so you just leave them and take the parentheses.
Here's #11:
-4(2a-3b+c)
distribute the numbers- (-4*2a)-(-4*3b)+(-4c)
solve- -4*2= -8
-4*3= -12
-8a-(-12)b+4c
*I dunno how to use parentheses for negative numbers but what I did for distributing is pretty much the same thing
Hope this helps you.
What is the percent increase ???? Help please
Answers
Answer:
25 percent increase
Step-by-step explanation:
im pretty sure
what two numbers multiply to -36 and add up to 5
Answers
Answer:
9 and -4
Step-by-step explanation:
Finding these 2 numbers can be found by guessing and checking. By doing this, it will get you the numbers 9 and -4.
First, test if they multiply to -36:
9(-4)
= -36
Then, check if they add up to 5:
9 + (-4)
= 5
So, 9 and -4 are the 2 numbers that multiply to -36 and add to 5
How do I find the x in this special triangle?
Answers
Answer:
x=5
Step-by-step explanation:
a^2+b^2=c^2
a=4
b=3
c=x
4^2+3^3=x^2
16+9=x^2
25=x^2
5=x
George bought 2.45 pounds of tofu and 1.62 pounds of fish. How many more pounds of tofu did he buy than fish?
Answers
Answer:
George has a seafood addiction
Step-by-step explanation:
which one of these is. linear function
Answers
Yeah this is rlly old work I didn’t do anddd I don’t remember how to do any of it cs I’m so far ahead so help? The first person I’ll mark as brainliest
Answers
Answer:
125x
Step-by-step explanation:
5x*5x*5x
5x*5x = 25x
25x*5x
125x
how we find persentage of 200/300
Answers
Round it up to the nearest tenth and we get 0.67
Move two decimals to the right and we have the answer, 67%
Hope this helped!
If it costs Melissa $8.20 to make a pie, how much should she charge for a pie? Round your answer to the nearest cent if necessary.
Answers
Answer:
$16.40
Step-by-step explanation:
Original Price $35
Sale Price $28
Find the percent of discount.
Answers
Answer:
-20%
Step-by-step explanation:
The percentage decrease from 35 to 28 is -20%.
It is a decrease that's why it is a negative number
20% discount is the percentage that was discounted from $35 giving you the sale cost of $28
Andre and Elena are solving this system of equations.
Y=3x
Y=9x-30
Andre’s first step is to create a new system:
3y=9x
Y=9x-30
Do you agree with either first step?
A-both strategies work
B-only the first strategy works
C-only the second strategy works
D-neither strategies work.
Answers
Answer:
A-both works
Step-by-step explanation:
one can simply sub into the second equation from the first step's one and remove an unknown, making it easy to solve
For the function F(x) = 1/x+1 which of these could be a value of F(x) when x is close to -1?
Answers
Answer:
Option B, -10000
Step-by-step explanation:
Step 1: Find the number that would be valid
As the x value gets closer to -1, the y values go to positive and negative infinity. Therefore, the best value out of the options given would be -10,000 since it is the closest to negative infinity.
Answer: Option B, -10000