Answer:
a square matrix in which all the elements of the principal diagonal are ones and all other elements are zeros. The effect of multiplying a given matrix by an identity matrix is to leave the given matrix unchanged.
Find the y-intercept and then write the linear equation for the line passing
through (-12, 5) with m = -2/3,
Answer:
Y-intercept: -3
Equation: y = -2/3x -3
Step-by-step explanation:
Slope intercept equation: y = mx + b, m is the slope and b is the y-intercept
Substitute m with -2/3, your equation should now be y = -2/3x + b
To find the y-intercept, plug in the point (-12,5) and solve for b.
1. 5 = -2/3(-12) + b
2. 5 = 8 + b
3. b = 8 - 5
4. b = 3
In a muncipality ,Two of the most well-known activities for teenagers are biking and motorcycling riding.Out of 100 teenagers,58 in biking,42 like motorcycling and 18 like both
a.create a veen diagram represent the problem
Answer:
See belowStep-by-step explanation:
Given:
Total number is 100Biking = 58Motorcycling = 42Both = 18Biking only:
58 - 18 = 40Motorcycling only:
42 - 18 = 24Neither:
100 - (40 + 18 + 24) = 18Venn diagram consists of:
Biking | Both (Intersection) | Motorcycling | Neither (outside of circles)
40 18 24 18
Someone help me please. I don't just want the answer, I need an explanation on how it's done too.
Answer:
Below.
Step-by-step explanation:
f) (a + b)^3 - 4(a + b)^2
The (a+ b)^2 can be taken out to give:
= (a + b)^2(a + b - 4)
= (a + b)(a + b)(a + b - 4).
g) 3x(x - y) - 6(-x + y)
= 3x( x - y) + 6(x - y)
= (3x + 6)(x - y)
= 3(x + 2)(x - y).
h) (6a - 5b)(c - d) + (3a + 4b)(d - c)
= (6a - 5b)(c - d) + (-3a - 4b)(c - d)
= -(c - d)(6a - 5b)(3a + 4b).
i) -3d(-9a - 2b) + 2c (9a + 2b)
= 3d(9a + 2b) + 2c (9a + 2b)
= 3d(9a + 2b) + 2c (9a + 2b).
= (3d + 2c)(9a + 2b).
j) a^2b^3(2a + 1) - 6ab^2(-1 - 2a)
= a^2b^3(2a + 1) + 6ab^2(2a + 1)
= (2a + 1)( a^2b^3 + 6ab^2)
The GCF of a^2b^3 and 6ab^2 is ab^2, so we have:
(2a + 1)ab^2(ab + 6)
= ab^2(ab + 6)(2a + 1).
Ali box 3 1\4 yards of blue ribbon for a craft project she bought 2 2\3 yards of green ribbon how much ribbon does she have in total to complete her project?
Answer:
5 /12
Step-by-step explanation:
A regular polygon has an exterior angle of 40
°
Work out the number of sides of the polygon.
Answer:
9 sides
Step-by-step explanation:
The sum of the exterior angles of a polygon = 360°
To find the number of sides n divide the sum by 40°
n = 360° ÷ 40° = 9
Multiply the binomials:
(3x + 4)(5x − 2)
Answer:
15x^2 + 14x - 8
Step-by-step explanation:
How do you solve (x+4)2 ?
Answer:
Simplify the expression.
x2+8x+16
Step-by-step explanation:
Dilations map lines to lines.
true or false ?
Answer:
true
Step-by-step explanation:
Find the side length of the triangle 4x+8=3x+12
Answer:
I think it might be 4.
Step-by-step explanation:
:)
I found something that says 6x or something if that helps?
I hope you get it right!!!
stteps for solving 6(4x-3) are shown
which of these is not a part of the solution prosess
Answer:2 4 − 1 8
Step-by-step explanation:
pls help me with this question ...
Here is ur perfect answer
Answer:
x = 207
Step-by-step explanation:
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
([tex]\sqrt{x}[/tex] )² + 7² = 16²
x + 49 = 256 ( subtract 49 from both sides )
x = 207
A square has an area of 146.41m2 work out the premeter of the square
Suppose that one of sides is x :
Area = x²
thus :
[tex]146.41 = {x}^{2} [/tex]
[tex]x = \sqrt{146.41} [/tex]
[tex]x = 12.1[/tex]
_____________________________________________
Perimeter = 4x
[tex]p = 4 \times 12.1[/tex]
[tex]p = 48.4[/tex]
The Perimeter of Square is 48.4 m.
What is Area and Perimeter of Square?The Area of square is the product of the side.
Area of Square = side x side
and, The Perimeter of Square is 4 times the side of square
Perimeter of Square = 4 x side
Given:
Area of Square = 146.41 m²
Now, Area of Square = side x side
Area of Square = side²
side² = 146.41 m²
side = √146.41 m²
side = 12.1 m
Now, the Perimeter of Square = 4 x side
= 4 x 12.1
= 48.4 m.
Lear more about Area and Perimeter of Square here:
https://brainly.com/question/29199125
#SPJ2
4(t²-5t) + 3u³ when t=4 and u=5?
ASAP
Answer: 359
Step-by-step explanation:
4(t²-5t) + 3u³ plug in the t and u
= 4[4²-5(4)] + 3(5)³
= 359
y=-2x + 7
y = 5х – 7
Find the solution
Answer:
x = 2
Step-by-step explanation:
Given:
y = -2x + 7 y = 5х – 7If y = -2x + 7 and y = 5х – 7, then -2x + 7 = 5х – 7. Now, let's solve.
=> -2x + 7 = 5х – 7
=> 7x = 14
=> x = 2
Since we found 'x', let's find 'y' with the given clue using one equation among any of the two equations.
=> y = 5х – 7
=> y = 5(2) - 7
=> y = 10 - 7
=> y = 3
Hoped this helped.
please help what is #4?
To Prove:-
JK=IJ
JK= ½IK = IJ= ½IK
JK= IJ(Equal Distance)
GK//HI (Parallel)
Therefore, JK congruent IJ
Hope This Helps
(8+ 4)divided by 2 - 3
Answer:
3
Step-by-step explanation:
(8 + 4) / 2 - 3
12 / 2 -3
6 - 3
3
Answer:
3
Step-by-step explanation:
You do the parenthesis first (8+4)
Then you divide 12 by 2 if you are following Pemdas
6 - 3 = 3
Hope this helped!
A fourth of the product of 13 and a number M
Answer:
[tex]\frac{13m}{4}[/tex]
Step-by-step explanation:
"the product of 13 and a number M" should be written as 13m.
To get a fourth of the produce we would need to divide it by four.
A fourth of the product of 13 and a number M should be [tex]\frac{13m}{4}[/tex] .
Hope this helps.
can yall help me plzz
Answer:
x = 8
Step-by-step explanation:
To get x on its own we need to divide both sides by 0.6: 4.8 ÷ 0.6 which is 8.Hope this helps!
Which of the following properties could be used to rewrite the expression (2/3 . 1/5) . 5/2 as 2/3 . (5/2 . 1/5)
a. The commutative property used twice
b. The associative property followed by the commutative property
c. The commutative property followed by the associative property
d. The associative property used once
Answer:B
Step-by-step explanation:
Can you give 50 cent in 8 dollars to 17 people
max has x dollars. Keisha has four more dollars then max
Answer:
4x
Step-by-step explanation:
Simply add 4 and x, and that is 4x.
How many times larger is 8 X 10^5 than 2 X 10^3
Answer:
798,000
Step-by-step explanation:
Simplify all the exponents
8×10^5
=8×100,000
=800,000
2×10^3
=2×1,000
=2,000
Difference=800,000-2,000
=798,000
The polynomial f(2) = 2? + 432 - 594 is a parabola. The parabola's x-intercepts are (11, 0) and (-54, 0). Give the factored form of the
polynomial.
725182626282527736282628
HURRY for Brainlist
The drama club is printing t-shirts for its 21 members. The printing company charges a certain amount for each shirt plus a setup fee of $40.
Write an equation to represent the total cost for printing the shirts.
Question 1 options:
C = 21 + 40t
C = 21t - 40
C = 21t + 40
C = 21t
The ratio of students in Class X to Class Y is 2 : 5. There are 24 more students in Class Y than Class X. How many students must transfer from Class Y to Class X so that both classes have equal number of students?
Answer:
The answer will be 12 students. 12 students must transfer from Class Y to Class X so that both classes have equal number of students.
Step-by-step explanation:
Since the ratio is 2 : 5, we would multiply both number to 8 and get 16 : 40.
Now find the average of those two numbers: (16 + 40) / 2 which gets you 28. Now either subtract 16 from 28 or subtract 28 from 40 and you will get 12.
28 - 16 = 12 students
40 - 28 = 12 students.
CAN SOMEONE HELP ME PLEASE ASAP!
Answer:
The correct answer is approximately 20 ft !
Please mark me brainliest if you are able to do it :)
the answer is 20,336 ft
6,200 mm is 6,2 m and you multiply it with 3,28 feet then you get the answer.
5
7
2
8
1) what is the area (square units)
Solve the equation the square root of the quantity x plus 4 minus 3 equals 1 for the variable. Show each step of your solution process. (10 points) SOLVE FOR X
x + 4 - 3 = 1
x + 1 = 1
x = 0
Answer:
x = 8
Step-by-step explanation:
√x + 4 - 3 = 1
1) Move constant terms to the opposite side of the equation: √x + 4 = 1 + 3
2) Simplify the right side: √x + 4 = 4
3) Now square both sides to eliminate the square root: (√x + 4)^2 = 4^2 (x + 4) = 16
4) Move the constant term to the other side: x + 4 = 16 – 4
5) Simplify the right side: x + 4 = 12
6) Move constant side to the other side: x = 12 – 4
7) Finally, after simplifying the right side again, you get: x = 8
Therefore, the solution to the equation √(x + 4) - 3 = 1 is x = 8.
What is a good estimate for 280% of 30? Explain.
Answer:
84
Step-by-step explanation:
Calculator:280÷100×30=84
Answer:
84
Step-by-step explanation:
Order the numbers 0.64, 2/3, 65%, and 7/10 from least to greatest.
(Please explain how you did it too-)
Answer:
the order is 0.64, 65%, 2/3, and 7/10
Step-by-step explanation:
because 2/3=0.66666, 65%=0.65, 7/10=0.7