Answer:
30
Step-by-step explanation:
30 i think
please help pls show ur work
Answer: a= -3 and b=2.
Step-by-step explanation:
If a system of linear equations has infinitely many solutions, then
Ratio of coefficient of y= ratio of coefficient of x = ratio of constants.
Given system: [tex]y=2x+a[/tex]
[tex]y=bx-3[/tex]
It it has infinitely many solutions, then
[tex]\dfrac{1}{1}=\dfrac{2}{b}=\dfrac{a}{-3}\\\\\Rightarrow\ \dfrac{2}{b}=1\ \ \ \text{ and }\ \ \dfrac{a}{-3}=1\\\\\Rightarrow\ b=2\ \ \ \text{ and } \ \ a=-3[/tex]
hence, a= -3 and b=2.
HELP ASAP!!WILL GIVE BRANLIEST!!!
Answer:
i think it is b
Step-by-step explanation:
The dot plot represents the scores of a group of students on an English test. If the dot
plot is converted to a box plot, the first quartile would be drawn at
, and the median would be drawn at
Answer:
the first quarter would be drawn before the median and the median would be drawn after the first quarter
Answer:
3,4
Step-by-step explanation:
whats 28*292 yo someone help
Answer:
The answer to 28 times 292 is 8,176
494 is 152% of what number?
Answer:
747.84
Step-by-step explanation:
change the percent to a decimal 1.52 then multiply by 494
1.52×494=747.84
it says I need to find f(2)
For any number n>1, is
(0.7 + 0.7i)n
a. Greater than 1?
b. Less than 1?
C. Equal to 1?
Using complex numbers, it is found that the correct option regarding the expression is:
a. Greater than 1.
What are complex numbers?Complex numbers are numbers that have a real and an imaginary part, and are modeled by:
[tex]z = a + bi[/tex]
In which:
a is the real part.b is the imaginary part.The magnitude of the number is:
[tex]|z| = \sqrt{a^2 + b^2}[/tex]
In this problem, the number is:
[tex](0.7 + 0.7i)n[/tex]
The smallest possible value is n = 4, hence:
[tex]z = 1.4 + 1.4i[/tex]
And the magnitude is:
[tex]\sqrt{1.4^2 + 1.4^2} = 1.98[/tex]
Which is greater than 1, hence option a is correct.
You can learn more about complex numbers at https://brainly.com/question/25572463
Answer: it’s b
Step-by-step explanation: the answer is .98 which is less than 1
prime numbers have
less than 2 numbers
more than 2 factors
exactly 2 factors
less than or equal to 2 factors
Answer:
wfddďdrfrrttyyyytgghhghhu
What is the only prime number HURRY
A jar contains at least 600 marbles. Two-thirds of the marbles are red. The rest are blue. How many marbles are blue?
Answer:
200 marbles are blue only if there are 600 marbles in total. If there are more than 600, you calculate by dividing the total number of marbles by three.
Answer:
200 blue marbles
Step-by-step explanation:
two-thirds of 600 is 400... so the rest is easy 600-400=200
brainliest pls
How do you solve this problem? What is the answer?
9514 1404 393
Answer:
65 feet
Step-by-step explanation:
The problem involves finding the perimeter of a rectangle, then making adjustments to remove parts of the perimeter that aren't wanted.
The perimeter of a rectangle is given by the formula ...
P = 2(L+W)
For Aubrey's 12' × 8' room, the perimeter is ...
P = 2(12' +8') = 40'
This is the length of the border Aubrey needs at the ceiling.
__
At "waist-high", we need to subtract the total width of all the windows and doors. That total is ...
3' + 4' + 3' + 5' = 15'
So, the waist-high border is 40' -15' = 25'.
__
The total amount of border Aubrey needs is ...
ceiling border + waist-high border = 40' + 25' = 65'.
Aubrey needs 65 feet of border.
A triangle has sides with lengths of 9 feet, 13 feet, and 16 feet. Is it a right triangle?
Step-by-step explanation:
no..................
The figure below shows a rectangular prism and a cube:
A rectangular prism and a cube are drawn side by side. The length of the rectangle prism is 6 inches, the width is 5 over 6 inch, and its height is 1 and 2 over 6 inches. The cube has a side length of 1 over 6 inch.
How many such cubes are required to completely pack the prism without any gap or overlap?
Calculate the volume of each shape.
Volume of rectangle = 6 x 5/6 x 1 2/6 = 6 2/3 cubic inches.
Volume of cube = 1/6 x 1/6 x 1/6 = 1/216 cubic inch.
Now divide the volume of the rectangle by the volume of the cube:
6 2/3 / 1/216 = 1440
It will take 1.440 cubes to fill the rectangle.
Answer:
1,440
Step-by-step explanation:
√27 + √48 - √12 the correct answers for this please
Answer:
5[tex]\sqrt{3}[/tex]
Step-by-step explanation:
Using the rule of radicals
[tex]\sqrt{a}[/tex] × [tex]\sqrt{b}[/tex] ⇔ [tex]\sqrt{ab}[/tex]
Simplifying the radicals
[tex]\sqrt{27}[/tex] = [tex]\sqrt{9(3)}[/tex] = [tex]\sqrt{9}[/tex] × [tex]\sqrt{3}[/tex] = 3[tex]\sqrt{3}[/tex]
[tex]\sqrt{48}[/tex] = [tex]\sqrt{16(3)}[/tex] = [tex]\sqrt{16}[/tex] × [tex]\sqrt{3}[/tex] = 4[tex]\sqrt{3}[/tex]
[tex]\sqrt{12}[/tex] = [tex]\sqrt{4(3)}[/tex] = [tex]\sqrt{4(3)}[/tex] = [tex]\sqrt{4}[/tex] × [tex]\sqrt{3}[/tex] = 2[tex]\sqrt{3}[/tex]
Then
[tex]\sqrt{27}[/tex] + [tex]\sqrt{48}[/tex] - [tex]\sqrt{12}[/tex]
= 3[tex]\sqrt{3}[/tex] + 4[tex]\sqrt{3}[/tex] - 2[tex]\sqrt{3}[/tex]
= 5[tex]\sqrt{3}[/tex]
Answer:
[tex] \sqrt{27} + \sqrt{48} - \sqrt{12} \\ \sqrt{3 \times 3 \times 3} + \sqrt{2 \times 2 \times 2 \times 2 \times 3} - \sqrt{2 \times 2 \times 3} \\ 3 \sqrt{3} + 4 \sqrt{3} - 2 \sqrt{3} \\ 7 \sqrt{3} - 2 \sqrt{3} \\ \boxed{5 \sqrt{3}} [/tex]
5√3 is the right answer.Please help it is due today!!
Answer: use a protractor and measure from the end of the line on the right side and measure 40 degrees and draw the line straight up from there
find the value of x in the triangle below
Answer: 89
Step-by-step explanation:
A triangle always equal 180 degrees
so first add the measurements you know
50+41 = 91
now subtract 180 by that
180-91
and then that is your answer
89 degrees
The table shows the profit and loss of the after -school snack stand write each profit as a positive number and each loss a negative number
Answer:
Profit
7.50
4.50
Loss
-3.50
-6.00
Step-by-step explanation:
Here, we want to write each profit as a positive number and each loss as a negative number
thus, we have that;
Profit;
7.50
4.50
Loss;
-3.50
-6.00
what is 39% of 200?
i already know it’s 78, i just need a explanation of how i got it.
Answer:
200 x .39
Step-by-step explanation:
200 x .39= 78
Answer:
39 percent of 200 is the same as 39 per hundred of 200. We can therefore make the following equation:
39/100 = X/200
To solve the equation above for X, you first switch the sides to get the X on the left side, then you multiply each side by 200, and then finally divide the numerator by the denominator on the right side to get the answer.
39/100 = X/200
X/200 = 39/100
X*200/200 = 39*200/100
X = 7800/100
X = 78
The work above shows the long way to explain how to calculate 39 percent of 200 in order to give you a foundation and better understanding of how to calculate percentage. In the future, you could use this simplified formula:
(Y * P)/100
In our problem "What is 39 percent of 200?", Y is 200 and P is 39:
(200 * 39)/100 = 78
And once again you see that the answer is 78.
Step-by-step explanation:
In the given diagram ⃤ ABC and ⃤ CDE are equilateral triangles. If ∠EBD = 62° then find the measure of 1/2 of ∠AEB.
Answer:
Given
△ABC and △CDE are equilateral.
AE
= 25
To find perimeters of the two triangles,
Let us consider the lengths of
AC
and
CE
to be
′
x
′
and
′
y respectively.
As △ABC is equilateral,
AC
=
AB
=
BC
= x
As △CDE is equilateral,
CE
=
CD
=
DE
= y
From the figure,
AE
=
AC
+
CE
25 = x + y
x + y = 25
Perimeter of the triangle is the sum of all sides of the triangle.
For △ABC,
Perimeter of △ABC =
AC
+
AB
+
BC
= x + x + x
= 3x
For △CDE,
Perimeter of △CDE =
CE
+
CD
+
DE
= y + y + y
= 3y
Now,
Perimeter of two triangles = Perimeter of △ABC + Perimeter of △CDE
= 3x + 3y
= 3 × (x + y)
= 3 × 25 (from above)
= 75
Therefore, Perimeter of the two triangles is'75′units.
Step-by-step explanation:
Hope it is helpful...
Evaluate: 8+12 divided by 4-3 ???
please answer for Brainliest!!!!!!
Answer:
20
Step-by-step explanation:
(8+12)/(4-3)
20/1
20
Write the number as a quotient of integers to show that it is rational.
300= ?/?
Answer:
300 is a rational number because it can be expressed as the quotient of two integers: 300 ÷ 1.
Step-by-step explanation:
The number [tex]300[/tex] can be written as [tex]\frac{300}{1}[/tex] as a quotient of integers to show that it is rational.
A rational number is a number of the form [tex]\frac{p}{q}[/tex], where [tex]q \ne0[/tex] and [tex]p[/tex] and [tex]q[/tex] must be co-primes.
To write a number in the form of quotient of integer, we write it as [tex]\frac{p}{q}[/tex], where [tex]q \neq 0[/tex].
Here, [tex]300[/tex] can be written as [tex]\frac{300}{1}[/tex] or [tex]\frac{600}{2}[/tex]or [tex]\frac{900}{3}.[/tex]
But we should also take care that [tex]p[/tex] and [tex]q[/tex] must be co-primes.
Co-primes are the pairs of numbers that have only one common factor which is [tex]1[/tex].
So, [tex]300[/tex] can be written as [tex]\frac{300}{1}.[/tex]
Learn more here:
https://brainly.com/question/20435423?referrer=searchResults
15х +6y = 21
7х + бу = -3
What is the solution for each of these
Answer:
15x +6y = 21. is equal to 07x +6y = -3. is equal to 0Step-by-step explanation:
15x +6y = 2 is equal to 0 because when we move the constant to the left and divide both sides of the equation by 3 we get:
5x + 2y - 7 = 0Same with 7x +6y = -3, when we move the constant to the left and sum the two opposites equal to 0 it give us:
7x + 6y + 3 = 0Did I get it correct?
Answer:
No they are proprotional.
Step-by-step explanation:
the tables eqaution is
y=3x+1
Answer:
Yes. I assume yes they are proportional because you can see a pattern in the y and x's.
PLEASE HELP!!!!
5. Write the system of inequalities for the graph.
will mark brainliest and give you loads of points!!
The system of inequalities for the specific graph is
1. (one on top) y ≤ 1/2x + 6
2. (one on bottom) y > 1/2x -2
Hope this helped! :D
CREATE A SYSTEM OF EQUATIONS AND FIND THE SOLUTION TO 5y-40x=10 y+6x=0
Answer:
x = -1/7
y = 6/7
Step-by-step explanation:
factor a 5 out of the first equation to work with smaller numbers:
y - 8x = 2
let y = -6x (derived from the second equation)
substitute: -6x - 8x = 2
-14x = 2
x = -2/14 or -1/7
find 'y': y - 8(-1/7) = 2
y + 8/7 = 14/7
y = 6/7
Answer:
x = -1/7, y = 6/7
System: [tex]\left \{ {{5y-40x=10} \atop {y+6x=0}} \right.[/tex]
Step-by-step explanation:
The system of equations would be [tex]\left \{ {{5y-40x=10} \atop {y+6x=0}} \right.[/tex].
To find out what x and y are, choose one of the equation and solve for y. Then, substitute the result for y into the other equation.
5y - 40x = 10 (Add 40x to both sides)
5y = 40x + 10 (Divide both sides by 5)
y = 1/5(40x + 10) (Multiply 40x + 10 by 1/5)
y = 8x + 2 (Substitute this for y in the other equation.)
8x + 2 + 6x = 0 (Add 8x to 6x)
14x + 2 = 0 (Subtract 2 from both sides)
14x = -2 (Divide both sides by 14)
x = -1/7 (Substitute this for x in the y = 8x + 2)
y = 8(-1/7) + 2 (Multiply -1/7 by 8)
y = -8/7 + 2 (Convert 2 into 14/7; show as a single fraction)
y = (-8 + 14)/7 (Add -8 and 14)
y = 6/7 (The system is solved)
100% Meiling and Jackie are playing a game of chance with a six-sided number cube. The sides of the cube are numbered 1 to 6. Meiling scores a point each time she rolls a number greater than 4.
Answer:
I'm not completely sure but I beileve Jackie less than 4
Step-by-step explanation:
good luck tho
Answer:
D
(i scored 100 on the quiz)
Can someone help me with this??
Answer:
see explanation
Step-by-step explanation:
The domain D are the values of x, that is
D = { 3, 6, 12, 18 }
The range R are the values of y , that is
R = { 5, 7, 9, 10 }
The relationship is a function if each value of x in the domain maps to exactly one unique value of y in the range.
The relation is not a function as
6 → 5 and 6 → 10 ( that is 2 different values )
The number of girls in Mrs. Manning’s classes was 12 less than twice the number of boys. She had a total of 108 students in her classes. How many girls and how many boys are in Mrs. Manning’s classes?
40 boys and 68 girls
let's start with variables and an equation.
boys: x
girls: 2x - 12
and we know that boys and girls make up the class. so let's add the two expressions.
x + 2x - 12 = 108
3x - 12 = 108
+ 12 + 12
3x = 120
x = 40 boys
BUT x is only the number of BOYS in the class. so we have to find girls now. let's plug in our value of x into the girls' equation.
2x - 12 = # of girls
2(40) -12 = # of girls
80 - 12 = # of girls
68 girls
let's check our answer!
68 + 40 does in fact add to 108, therefore our answer is correct.
factorise cos²A + 3 Cos A + 2
Answer:
[tex](cosA +1)(cosA +2)[/tex]
Step-by-step explanation:
[tex]cos^2(A)+3cos(A)+2[/tex]
Which number add up to 3 and multiply to 2?
That would be 1 and 2.
[tex]cos^2(A)+3cos(A)+2=(cosA +1)(cosA +2)[/tex]
10% more than a number of 132