Answer:
[tex]x= 6+ \sqrt {6}[/tex]
Step-by-step explanation:
[tex]-\sqrt {2x-5}+x=5\\-\sqrt {2x-5}=-x+5\\\\\frac {-\sqrt {2x-5}}{-1} = \frac {-x+5}{-1}\\\\\sqrt {2x-5}=x-5\\2x-5=(x-5)^2\\2x-5=x^2-10x+25\\2x-5-(x^2-10x+25)=x^2-10x+25-(x^2-10x+25)\\-x^2+12x-30=0\\\\x=\frac {-12(+/-)\sqrt {12^2-4(-1)(-30)}}{2(-1)}\\\\x=6+\sqrt {6}[/tex]
In Mrs. Kee’s class there are 20 boys and 16 girls. 25% of her students wore a jacket to class. How many students wore a jacket to class?
Answer: 9
Step-by-step explanation: there are 36 students in total. Since 25% of students wore a jacket, you would multiply 36 by 1/4 which gets you 9, so 9 students wore jackets
Determine the x- and y-intercepts of the graph of x – 4y = 8. Then plot the intercepts to graph the equation.
Answer:
the x is -8,0 and the y is 0,2
hope this helps!
I need help ASAP answer both questions please show work
Answer:
3. <BAC = <BCA
so,
x+x+36° = 180°
=>2x + 36 = 180
=>2x = 180–36
=>2x = 144
=>x = 144/2
=>x = 72°
please help :) :) Math is hard
Answer:
Hard math okay cant get
Step-by-step explanation:
Emma earned $120 at her part-time job.
She also received a bonus of 20% of her
salary for additional hours worked. How
much did Emma earn in all?
Answer:
She earned $144 in total.
Q4: Tell whether side lengths (4, 2, 5) form a Right Triangle.
Yes they would form a right triangle you can figure this out by adding the two smaller values and if that is equal to a larger number then the larger number then it is a right triangle
Lin read 44 pages in 132 minutes. Diego read 35 pages in 140 minutes. Who is reading at a faster rate, Lin or Diego? Show and Explain your reasoning.
Answer:
Diego
Step-by-step explanation:
divide 132 minutes by 44 pages and you get 3 pages per minute, then divide 140 minutes by 35 pages and you will get 4 pages per minute. so Diego reads 1 more page a minute than lin. hope i helped you :)
Describe the roots of x2 + 6x + 9 = 0
Answer:
x2+6x+9=0
x^2+3x+3x+9=0
x(x+3)+3(x+3)=0
x=-3 twice
Can someone help please?
Answer:
C
Step-by-step explanation:
If you reduce 21/28 you get 3/4 and if you reduce 12/16 you get 3/4 which makes them both proportional.
The height above the surface of the Earth (in meters) of a rock thrown into the air at 10 m/s after x seconds is given by f(x)=−9.8x2+10x+1.5. On the surface of the moon, the height is given by g(x)=−1.6x2+10x+1.5. How much higher does the rock travel on the moon than on Earth? The rock travels about __ meter(s) higher on the moon than on Earth.
Answer:
Rock travels about 8.2x²meters higher on the moon than on the Earth.
Step-by-step explanation:
Expression showing the height of a rock thrown into the air at Earth is,
f(x) = -9.8x² + 10x + 1.5
Similarly, expression showing the height of rock thrown on the moon is,
g(x) = -1.6x² + 10x + 1.5
Difference in the height of the rock thrown on moon = g(x) - f(x)
= (-1.6x² + 10x + 1.5) - ( -9.8x² + 10x + 1.5)
= -1.6x² + 9.8x² + 10x - 10x + 1.5 - 1.5
= 8.2x²
Therefore, rock travels about 8.2x²meters higher on the moon than on the Earth.
Please hurry!! (But no rush, thank you)
Answer:
The answer is d 3 to the power of 108
Answer:
c
Step-by-step explanation:
:) srry if its wrong
12y = 4x + 8
A=
B=
C=
Can someone please help!!
12y = 4x + 8
A = 12y -4x + 8
B = 8yx = 8
C = yx =8/8
=yx = 1
2.4(x - 6) = -5.6x + 8
Let's solve your equation step-by-step
2.4(x-6)=-5.6x+8
Step 1: simplify both sides of the equation
2.4(x-6)=-5.6x+8
(2.4)(x)+(2.4)(-6)=-5.6x+8 (distribute)
2.4x+-14.4=-5.6x+8
2.4x-14.4=5.6x+8
Step 2: Add 5.6x to both sides.
2.4x-14.4+5.6x=-5.6x+8+5.6x
8x-14.4=8
Step 3:Add 14.4 to both sides
8x-14.4+14.4=8+14.4
8x=22.4
Step 4 : Divide both sides by 8
8x/8 =22.4/8
Answer : x=2.8
n+5= -5
What is n? Thank you
Answer:
the answer is -10 -10+5=-5
Which of the binomials below is a factor of this trinomial?
6x2 - 6x - 72
[tex]6 {x}^{2} - 6x - 72 = [/tex]
[tex]6( {x}^{2} - x - 12) = [/tex]
[tex]6(x - 4)(x + 3)[/tex]
Which number is IRRATIONAL?
A) 47
B)
0.09
C)
15
D)
8
45
Your answer would be B. 0.09, the reason being is that any number that has a 0 and then a decimal point is irrational (or a regular fraction
A man drives 3 km east from home to the store and then 2 km west to a friend’s house. What is his displacement from his starting point at home?
Answer:
1 kilometer east
Step-by-step explanation:
if you subtract 2 from 3 you get one, plus it's east with the bigger number, so that's why it's one kilometer east
The displacement from his starting point at home is 1 km.
What is a vector?The quantity which has magnitude, and direction, and follows the law of vector addition is called a vector.
A man drives 3 km east from home to the store and then 2 km west to a friend’s house.
The term "displacement" refers to a shift in an object's location. It is a vector quantity with a magnitude and direction.
The displacement from his starting point at home is calculated as,
Displacement = 3 - 2
Displacement = 1
The displacement from his starting point at home is 1 km.
More about the vector link is given below.
https://brainly.com/question/13188123
#SPJ3
75 is % of 300 what is the answer
Answer:
25%
Step-by-step explanation:
Can someone help me
m < 1 = 130°
m < 1 = 130°m < 2 = 50°
We know this is a linear pair, therefore the two angles must add up to 180°
[tex](m < 1 )+ (m < 2 )= 180[/tex]
[tex]5x + x + 24 = 180[/tex]
Combine like terms
[tex]6x + 24 = 180[/tex]
Isolate the variable
[tex]6x = 156[/tex]
[tex]x = 26[/tex]
Plug in 26 for x in both of the individual angle equations.
[tex]m < 1 = 5x[/tex]
[tex] = 5(26)[/tex]
[tex] = 130[/tex]
[tex]m < 2 = x - 24[/tex]
[tex] = (26) + 24[/tex]
[tex] = 50[/tex]
A good way to check if we did this correctly, is to add up the two angles. Because 180 + 50 = 180, we did this correctly.
I hope this helped. Let me know if you have any questions!
Chang bought 15 pounds of flour for $7.
How many pounds of flour did he get per dollar?
Ũ poundsper dollar
Answer:
2.14 pounds of flour per dollar
Step-by-step explanation:
This is a simple ratio. All you need to do is divide the amount he paid from the pounds to get how many he got for every dollar.
Which of the following scenario could be represented by 2/5?
Answer: C
Step-by-step explanation: 2 is the numerator so you are dividing 2 by the denominator which is 5. Equation 2/5. So you can cross out A and B because they start with 5 and we need one that starts with 2. Then you can't divide people so your answer would be C because everything can be divided correctly.
Three sides of a triangle are consecutive even integers. The
perimeter of the triangle is 48 in. Find the side lengths of the
triangle.
Answer:
The side lengths of the triangle are 14, 16, and 18.
Step-by-step explanation:
(x) + (x + 2) + (x + 4) = 48
3x + 6 = 48
3x = 42
x = 14
(14) = 14
(14 + 2) = 16
(14 + 4) = 18
The required lengths of side of triangle are 14 in, 16 in and 18 in.
What is a triangle?A triangle is a geometric figure with three edges, three angles and three vertices. It is a basic figure in geometry.
The sum of the angles of a triangle is always 180°
Given that,
Sides of a triangle are consecutive integers.
Also given that,
Perimeter of triangle is 48.
Let the sides of triangle are x, x+2 and x +4.
x + x + 2 + x + 4 = 48
3x = 48 - 6
3x = 42
x = 14
The length of the triangles
x + 2 = 14 + 2 = 16
x + 4 = 14 + 4 = 18
The side lengths of the triangle are 14, 16 and 18.
To know more about Triangle on:
https://brainly.com/question/2773823
#SPJ2
Segment addition, step by step on how u figure it out.
Answer:
Step-by-step explanation:
2x - 8 + x + 17 = 39
3x + 9 = 39
3x = 30
x = 10
2(10) - 8 = 20 - 8= 12 m for AB
10 + 17 = 27 m for BC
Simplify
6 minus the square root of 25 over 4
I would appreciate some help :)
Is 48.4 closest to 49 on a number line
Answer:
if there are any less than 4.84 then yes it is.
Step-by-step explanation:
please give brainliest and hope this helps
Last year Jo paid £245 for her car insurance.
This year she has to pay £883 for her car insurance.
Work out the percentage increase in the cost of her car insurance
Answer:
The percentage increase in the cost of her car insurance is 260.4%
Step-by-step explanation:
First, we are going to find by how much the insurance increased:
We know that this year she pays £883 and the last year she paid £245, so
insurance increase = £883 - £245
insurance increase = £638
Now, we are going to find what percentage of the last year price is the insurance increase. So, to find the percentage increase in the cost of the car insurance, we need to divide the insurance increase by the last year price and multiply the result by 100%
percentage increase = (\frac{638}{245} )(
245
638
) (100%)
percentage increase = (2.604)(100%)
percentage increase = 260.4%
We can conclude that Jo's car insurance cost increased 260.4%
If anyone can read my teachers bad handwriting, please help me it is 1:30 in the morning and if someone does this for me I will be giving them a cookie and hugs::):):)
Answer:
she wrote: (3,1) (6,1) (6,4)
1 step one R (X-axis) --> step two R (180°,0) --> step three R (Y-axis)
(I honestly have no clue what she is doing but, its stupid)
What's the slope and y-intercept of the 2 points: (1, -7) (-5, 0)
Answer:
Slope is -7/6. Y - intercept is -35/6
Step-by-step explanation:
Hope this helps!
Urgent help !!
The word "or" in probability implies that we use which operation?
A. Addition
B. Multiplication
C. Multiplication then subtraction
D. Subtraction
Answer:
its c
Step-by-step explanation:
i think im sorry if it wrong this a unusal term for operation
answer for 5 stars pls I need it quick
Answer:The answer is 1/x^12y
Step-by-step explanation:
