Notice that y = 2x, which means you can replace any y and turn them into 2x
x = -y + 6
x = -(2x) + 6
Move the x terms to the left and change the sign
x + 2x = 6
3x = 6
x = 2
Now that you know x, substitute them back into the first y = 2x
y = 2(2)
y = 4
Answer: x = 2, y = 4
Construct an isosceles right-angled triangle ∆PQR where ∠
Answer:
Please find attached the required triangle drawn with Microsoft Visio
Step-by-step explanation:
The isosceles triangle ΔPQR we are to construct has the following parameters;
∠PQR = 90°
Length of side hypotenuse PR = 4 cm
Therefore, given that the triangle is right triangle is an isosceles triangle the length of each of the side legs are equal
Therefore, we have;
Length of PQ = Length of QR
The length of the legs , [tex]\overline {PQ}[/tex] and [tex]\overline {QR}[/tex], are given by Pythagoras's theorem as follows;
[tex]\overline {PR}[/tex] = √([tex]\overline {PQ}[/tex]² + [tex]\overline {QR}[/tex]²) = √([tex]\overline {PQ}[/tex]² + [tex]\overline {PQ}[/tex]²) = [tex]\overline {PQ}[/tex]·√2
∴ [tex]\overline {PQ}[/tex] = 4 cm/(√2) = 2·√2 cm = [tex]\overline {QR}[/tex]
The required triangle drawn with Microsoft Visio is attached
What is the surface area of a sphere that
has a diameter of 12 inches?
Answer: The surface area is 452.39in²
Step-by-step explanation:
Formula
A=4πr²
d= 2 r
Solving for A
A=πd²=π·12²≈452.38934in²
The surface area of a sphere that has a diameter of 12 inches is 452.39 in².
To solve the question, we need to know what the surface area of a sphere is.
What is the surface area of a sphere?The surface area of a sphere is given by A = 4πr² where
r = radius of sphere = d/2 where d = diameter of sphere.Given that d = 12 inches, r = d/2 = 12 in/2 = 6 in
Substituting the value of r into A, we have
A = 4πr²
A = 4π × (6 in)²
A = 4π × 36 in²
A = 144π in²
A = 452.39 in²
So, the surface area of a sphere that has a diameter of 12 inches is 452.39 in².
Learn more about surface area of a sphere here:
https://brainly.com/question/24357913
scrap metal buyer pays $3.18 Per square foot of steel. how much can you earn by selling the steel drum below? round your answer to the nearest dollar.
Answer:
79.82
(Rounded to the nearest dollar 80)
Step-by-step explanation:
Surface area of Cylinder:
Circle:
π[tex]r^{2}[/tex]=
1π = π
so since there are 2 circles it is 2π
Rectangle:
length*width=
3*Circumference
3*(2π)=
6π
Add them all together:
2π + 6π = 8π
≈ 8*3.14
so the answer is approximately 79.82
Hope this helps :)
Please I need serious help with this ASAP!!! I will mark brainliest if correct!! Please explain!!!
Answer:
1. Given
2. Reflection property of congruence
3. Definition of a a midpoint
4. Reflexive property of congruence
5. CPCTC
Step-by-step explanation:
Which of these operations is not closed for polynomials?
A. Division
B. Multiplication
O C. Subtraction
Answer
A. Division
Step-by-step explanation:
Katie takes an Uber to work. She pays $1.50 per mile and she tips
the driver $10.
Write an equation to show how many miles she can go for $34
Answer:
1.50x+10=34
Step-by-step explanation:
the radius of a sphere is 21cm find its area and volume
Answer:
5544cm (squared)
Step-by-step explanation:
Surface area of a sphere=4πr (squared) =4× 7/ 22 ×21×21cm (squared)
Surface area of the sphere=5544cm
.
Answer:
Area = 5164.8 cm; volume = 38792.4 centimeters
Step-by-step explanation:
Since the radius is known, we can substitute it for r in the first formula.
A = 4πr²
A = 4π(21)²
A = 4π(411)
A = 12.566370614359 * 411
A = 5164.8
V = 4/3πr^3
V = 4/3π21^3
V = 4/3π(9261)
V = 4.1887902047863 * 9261
V - 38792.4
what is the value of x in the equation 1/3x + 7 = -2
In ΔCDE, the measure of ∠E=90°, the measure of ∠D=22°, and CD = 80 feet. Find the length of EC to the nearest tenth of a foot.
Answer:
30
Step-by-step explanation:
You select 35 marbles from a bag. The results are as follows: 9 blue marbles, 8 green marbles, 4 red marbles, 8 white marbles, and 6 yellow marbles. Find (red). Write the probability as a fraction in simplest form, a decimal, and a percent.
Answer:
4/35, 0.114, 11.4%
Step-by-step explanation:
Please I need help with this question
Answer:
substituting the value of x into the equation y=x^2 + 1
Step-by-step explanation:
where x=-2, y= 5
where x=-1, y=2
Answer:
x = -2 ---------> y = 5
x = -1 --------->y = 2
x = 0 --------->y = 1
x = 1 --------->y = 2
x = 2 --------->y = 5
x = 3 --------->y = 10
Step-by-step explanation:
IF THIS IS RIGHT CAN U PLEASE MAKE ME A BRAINLIEST SO I CAN REACH TO TOP RANK
THANK U
STAY SAFE AND BE HEALTHY :)
PLEASE HELP ME OUT ON MATH TO ALL THE MATH NERDS OUT THERE
Answer:
4 847 575, 389362513
Step-by-step explanation:
is the answer
hope i helped
Answer: 6.85x100,000,000
Step-by-step explanation: 10^8=100,000,000
Use your graph to find estimates of the solutions to the equation x^2 - x - 2 = 3
Answer:
x = -1.791 and x = 2.791
Step-by-step explanation:
Graphing x^2 - x - 2 = 3
we got 2 intersects at x = -1.791 and x = 2.791
Answer:
I dont know if this is the right answer hehe
PLEASE HELP!!!!! ASAP
Answer:
y = -x + 30
Step-by-step explanation:
You will want to put the equation in the form y = mx + b where m is the slope and b is the y-intercept (an example is y = 2x - 1).
First, to find the slope you want to find how much x goes up by when y goes up by 1. You know from the table that when y goes up by 5, x goes up by -5 (using the points (10, 20) and (5, 25))
Then, you can divide each value by 5, so it would be when y goes up by 1, x goes up by -1. That means the slope is -1.
So far, the equation is y = -x + b. To find b, you can plug in one of the points you have and solve for b. For example, substitute in x = 10 and y = 20, so:
20 = -10 + b
add 10 to both sides
30 = b
So you know the equation is y = -x + 30
Please let me know if any parts of these explanation are confusing, I definitely think this concept can be confusing at time. Good luck with your work! :)
Answer:
To create an equation, you need to find the slope first. The slope formula is [tex]\frac{y^2-y^1}{x^2-x^1}[/tex]. Let's use two random coordinates: (10,20) and (5,25). Plug in these digits into the formula to get [tex]\frac{25-20}{5-10}[/tex]. Simplify to get [tex]\frac{5}{-5}[/tex] or -1. The equation would look like y=-x+b. Now we need to find b. Again, let's use a random coordinate: (10,20). Plug in the digits into the variables to get 20=-10+b. Add 10 on both sides to get 30=b. So, the equation would be y=-x+30.
Please help me this is half my grade I will give 50 points also it’s 64 guest if you couldn’t see it please help.
Factor- 5x2-10x PLEASE HELP NEED TO PASS MATH WILL MARK BRAINLIEST!!!!!
−5(+2) uh
Hope thats correct have a great day
Answer:
um not really sure
Step-by-step explanation:
Death Star shoots at Earth! Earth explodes! No survivors!
Answer:
WHY?
Step-by-step explanation:
i need 1 MORE BRAINLIEST!!!
Are You Ready For More?
A loaf of bread is cut into slices.
1. If each slice is 1/2 of a loaf, how many slices are there?
:
2. If each slice is 1/5 of a loaf, how many slices are there?
:
3. What happens to the number of slices as each slice gets smaller?
:
1. There would be 2 slices as the denominator is 2.
2. There would be 5 slices as the denominator is 5.
3. As each slice gets smaller, the denominator gets bigger, because the bigger the denominator is, the more pieces it needs to make a whole.
Hope this helps :)
There are 2 pieces if each slice is 1/2 of a loaf, and 5 pieces if each slice is 1/5 of a loaf, and the total number of pieces get increases if each slice gets smaller.
What are fractions on number lines?When fractions are represented on a number line, we can plot them on a number line just like we can with whole numbers and integers. Parts of a whole are represented by fractions. In order to depict fractions on a number line, equal pieces of a whole are divided.
Given A loaf of bread is cut into slices.
1. If each slice is 1/2 of a loaf, how many slices are there,
here slices are 1/2 of the loaf so the loaf is divided into two equal parts,
1/2 + 1/2 = 1
2. If each slice is 1/5 of a loaf, how many slices are there,
here loaf has 5 equal parts,
1/5 + 1/5 + 1/5 +1/5 + 1/5 = 1 loaf
3. What happens to the number of slices as each slice gets smaller?
the value of the denominator in fraction goes on increasing and since the value is increasing the number of slices also gets increases.
Hence there are 2 pieces for 1/2 of the loaf,
5 pieces for 1/5 of the loaf,
and the number of slices increases when each slice gets smaller.
Learn more about fractions on number lines;
https://brainly.com/question/17658856
#SPJ5
Solve equations using properties of equality, inverse operations, and inverse order of operations.
7. -4 + 5b = 11
8. 8m + 7 = -9
9. -3 + 2c = -13
Answer:
7. b = 3
8. m = -2
9. c = -5
Step-by-step explanation:
Area of a rectangle is (6x25x + 2) sq. units.
the breadth of the rectangle is 6x - 7 units, what is its length?
write the expression which represents the perimeter of the rectangle
lf x=10m, find the actual length, breadth and area of the rectangle.
what is 60 times 400 equalsssssss
Answer:
24000 is ur awnser
Step-by-step explanation:
Answer:
24,000
Step-by-step explanation:
R1 V
Х
Х
Complete the following table, by using x for no and ✓ for yes:
N No. Z
Q 04 R
e.g.: 0
✓ ✓ ✓
-6 X X
0,12543
V2
1
4
22
7
V-8
5
끓
0,999....
Answer:
✓ ✓ ✓
-6 X X✓ ✓ ✓
-6 X X
What is the difference between Standard Notation and Scientific Notation?
Answer:
Scientific notation is a way of expressing numbers that are too big or too small to be conveniently written in decimal form. Standard notation is the normal way of writing numbers.
Answer:
Scientific notation: c * 10^n where 1 <= c < 10
Now standard notation is basically multiplying c * 10^n out
For example:
Scientific notation: 4.5 * 10^4
Would be written as 45000 in standard notation (either multiply by 4.5 * 10^4 or just simply move the decimal in 4.5 four places to the right)
For example:
Scientific notation: 0.6 * 10^-3
Would be written as 0.0006 in standard notation (either multiply by 4.5 * 10^-3 or just simply move the decimal in 0.6 three places to the left)
The scatter plot shows the relationship between the test scores of a group of students and the number of hours they play computer games in a week: Part A: What is the group of points labeled A called? What is the point labeled B called? Give a possible reason for the presence of point B. Part B: Describe the association between students' test scores and the number of hours they play computer games. I'm giving 20 points for this!!
Answer:
part a - clusters
part b - outlier
That one person couldve been really smart or studied a lot after he played video games
For the most part the less time a student spends on computer games the higher the test score is
Step-by-step explanation:
evaluate f(.25) if f(x) = [[2x-1]]
Answer:
(-.5)
Step-by-step explanation:
Graphing Quadratic Functions (help please )
Find the vertex and zeros of each graph, then make a graph of each function. Label the vertex and zeros of each graph.
1. f(x) = - 2(x - 4) (x + 6). 4. Y = -(x - 4)^2 + 11
Vertex = _______
Zeros = _______
Vertex = _______
Zeros = _______
2. Y= 3(x + 1)(x + 6)
Vertex =_______
Zeros =_______
3. Y= -2(x - 4) (x + 6)
Vertex =______
Zeros =_______
Answer:
#1
Zeroes: x = 4, x = -6
The vertex is at ( -1 , 50 )
Step-by-step explanation:
I'll do the first one, you try the rest
All of these are written in y = a(x - x1)(x - x2) where x1 and x2 are given and x are the two different zeroes (or x-intercepts)
f(x) = -2(x-4)(x+6)
The zeroes are x - 4 = 0 and x + 6 = 0 if you solve, you get 4 and -6
Zeroes: x = 4, x = -6
The x value of the vertex can be found using -b/2a (in the form ax^2 + bx + c)
First expand f(x)
-2(x^2 + 2x - 24) => -2x^2 - 4x + 48
b = -4 and a = -2
-(-4)/2(-2) = 4/-4 = -1
the x-value of the vertex is -1
Now substitute -1 as x to find the y-value of the vertex
-2(-1-4)(-1+6) = -2(-5)(5) = 50 <= y-value of vertex
The vertex is at ( -1 , 50 )
Peanuts cost $6.40 per pound. How much will 8 pounds cost?
Answer:
51.2 dollars
Step-by-step explanation:
you have to multiply 6.40 by 8
Sid wants to buy a pair of sunglasses that is 65% off. The original price is $37.35 . What is the amount of discount ( to the nearest hundredth) ? What is the sale price? ( to the nearest hundredth) ?
Answer:
Step-by-step explanation:
discount = 65% of $37.35 = 0.65×37.35 ≅ $24.28
sale price = $37.35 - 24.28 = $13.07
What is the length of CF?
Answer:
8.5
Step-by-step explanation:
BF * EF = CF * DF
7 * 17 = CF * 14
119 = CF * 14
CF = 119 / 14
CF = 8.5
Which number is between √ 6 /2 and √8
Answer:
4567890
Step-by-step explanation:
this is not correct
Answer:
2
Step-by-step explanation:
