Answer:
Its B
Step-by-step explanation:
Answer:
the anwser is b
Step-by-step explanation:
Solve the equation using the Distributive Property:
3(x+8) =
3x + 24 =
3x =
9x =
Answer: 3x=-24
9x is 3(3x)= 3(-24)
9x=-72
X=-8
Step-by-step explanation:
For the given pair of equations, give the slopes of the lines, and then determine whether the two lines are parallel, perpendicular, or neither.
10x - 3y = 3
3x + 10y = 30
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
O A. The slope of 10x - 3y = 3 is
(Type an integer or a simplified fraction.)
O B. The slope of 10x - 3y = 3 is undefined.
Answer/Step-by-step explanation:
Given,
10x - 3y = 3
3x + 10y = 30
Rewrite both equation in slope-intercept form, y = mx + b.
Where, m = slope of the line.
Thus,
✔️10x - 3y = 3
-3y = -10x + 3
y = 10/3x - 1
Slope of this line would be 10/3
✔️3x + 10y = 30
10y = -3x + 30
y = -3/10x + 3
The slope of this line is -³/10.
✔️The two lines are pendivukar to each other because the slope of one is the negative reciprocal of the other.
AREA OF A CIRCLE
r=3 cm
if you play paintball for $8 for 30 minutes, how much will it cost you to play for 1 hour and 15 minutes?
please hurry! will give brainliest
Answer:
20
Step-by-step explanation:
30+30 is a hour and half of 30 is 15 so do this 8+8 and the add half of 8 and it is 4 so the full thing is 8+8+4+20
Peggy jogged for 2 hours 12 minutes. How many total minutes did Peggy jog?
Answer:
132
Step-by-step explanation:
60 + 60 + 12 = 132
Which line has an x-intercept of 4?
4x+y=8
-4x + y= 8
2x+ 2y = -8
-2x+2y= -8
Answer:
-2x+2y=-8
-2x+2(0)=-8
-2x=-8
x=-8/-2
x=4
(4,0)
=======================================================
Explanation:
If we plug in y = 0 and solve for x, we'll get the x intercept.
Doing so for choice A has us get
4x+y = 8
4x+0 = 8
4x = 8
x = 8/4
x = 2
So the x intercept is 2. We can rule out choice A
Through similar steps, choice B has an x intercept of x = -2, so we can rule that out as well.
Choice C leads to x = -4, so that's not the answer either.
Choice D has an x intercept of x = 4 since,
-2x+2y = -8
-2(4)+2(0) = -8
-8+0 = -8
-8 = -8
So that confirms choice D is the answer.
Danny charges $18 for 2 hours of swimming lessons, Martin charges $80 for 5 hours of swimming lessons.
Who offers a better deal?
(select) offers the better deal.
(select)
Martin
Danny
Answer:
danny's offer is cheaper
Step-by-step explanation:
danny = $9 per hour
martin = $16 per hour
Which of the following solutions solves the system?
y = -4x - 24
y + 2x = 8
How would I solve by substitution step by step?
Answer:
x=-16
y=40
Step-by-step explanation:
y=-4x-24
y+2x=8
its the same y. Use substitution
(-4x-24)+2x=8
-2x-24=8
-2x=32
x=-16
We found x!
substitute x in either equation
y+2x=8
y+2(-16)=8
y-32=8
y=40
Answer: (-16, 40)
Step-by-step explanation: Using substitution, you can but the first y=-4x-24 into the second equation y+2x=8. So, you take what y is (which is -4x-24) and substitute it for the second y in the equation y+2x=8.
Your equation should now look like this (-4x-24) + 2x = 8.
You can then solve -4x -24 +2x =8. Combine like-terms (-4x+2x) to get -2x-24=8. Then use inverse operations and add 24 from both sides (so from the -2x-24 side and 8 side). This will then give you -2x=32. divide both sides from -2x to get:
x = -16
Then, plug in x= -16 into the first equation (y= -4 (-16) - 24). Then use PEMDAS and multiply -4 and -16 to get +64. Subtract 24 to get:
y = 40
A pack of 10 pencils costs $4.00. Find the unit rate of 1 pencil.
$.30
$.40
$.60
$.90
Answer:
.40
Step-by-step explanation:
What is the solution to −10x−4≥−4(x−2) ?
Answer:
Step-by-step explanation:
Here you go mate
PEMDAS
Parenthesis
Exponents
Multiplication
Addition
Subtraction
Step 1
-10x-4≥-4(x-2) Equation/Question
Step 2
-10x-4≥-4(x-2) Remove parenthesis
-10x-4≥-4x+8
Step 3
-10x-4≥-4x+8 Simplify by adding 4x
-6x-4≥8
Step 4
-6x-4≥8 Subtract 4 from both sides
6x≥12
Step 5
6x≥12 Divide both sides by 6 or 3
answer
x≤-2
HELP ME ON THIS QUESTION ASAP!!!!!
If 9 : x = x : 4, then x = _____
Step-by-step explanation:
Explanation:
9
:
x
as
x
:
4
∴
9
x
=
x
4
x
2
=
36
x
=
±
√
36
x
=
±
6
Step-by-step explanation:
[tex]\tt{ 9:x=x:4 }[/tex] ⠀
[tex]\tt{\dfrac{9}{x}=\dfrac{x}{4} }[/tex] ⠀
[tex]\tt{x×x=9×4 }[/tex] ⠀
[tex]\tt{ x^2=36 }[/tex] ⠀
[tex]\tt{ x=\sqrt{36}}[/tex] ⠀
[tex]\tt{ x=6 ~and~x=-6 }[/tex] ⠀
Drag the tiles to the correct boxes to complete the pairs.
Match each compound inequality to the graph of its solutions on the number line.
Answer:
The answers for the exercise shown in the figure attached above, are shown
Step-by-step explanation:
-The Compound inequality for the solution 1 is:
-2(x+1)≥-4 or 4x-7≥5
x≥1
x≥3
-The Compound inequality for the solution 2 is:
-6≤2x-8≤-2
1≤x≤3
-The Compound inequality for the solution 3 is:
3x-4≥5 or -5x+17≤12
x≥3
x<1
Solve the proportion: 6/x = 21/28
The answer is 8.
What is proportion?
Proportion is defined as the difference between two ratios or fractions that are equal to each other.
The given proportion is
6/x = 21/28
x = (6*28)/21
x=(6*4)/3
x=8
Hence the solution for the given proportion is 8.
To learn more about proportion, use the link given below:
https://brainly.com/question/3254974
#SPJ2
3 + 2r = 5 so r = what
Answer:
r=1
Step-by-step explanation:
3+2r=5
-3 -3
2r=2
r=1
Answer: R equals 1. Move the constant to the right and change it's sign. Subtract the numbers. Divide both sides of the equation by 2. So that leaves you with 1.
Solve x4 - 11x2 + 18 = 0.
Answer:
x=√2, x=-√2, x= 3 and x=-3
Step-by-step explanation:
We need to solve the equation x^4 - 11x^2+18=0
We can replace x^4 = u^2 and x^2 = u
So, the equation will become
u^2 -11u+18 = 0
Factorizing the above equation:
u^2 -9u-2u+18 =0
u(u-9)-2(u-9)=0
(u-2)(u-9)=0
u=2, u=9
As, u = x^2, Putting back the value:
x^2 =2 , x^2 =9
taking square roots:
√x^2 =√2 ,√x^2=√9
x=±√2 , x = ±3
so, x=√2, x=-√2, x= 3 and x=-3
Answer:
The second answer is correct.
Step-by-step explanation:
Mark brainliest if correct please
Do 1 and have the same value?
Are 12/15 and 8/10 have the same value
Answer:
Step-by-step explanation:
12=3*2*2
15=5*3
12/15=4/3
8/10=4/5
no, they don't have the same value
Is 4.259462364423... a rational or irrational number?
Answer:
Yes it its!!! It goes on for a long time!! Keep that in mind when you are doing problems like this!
:)
Step-by-step explanation:
HELPPPPPPPPPPP!!!!!!!!! Oh
Answer:
We conclude that:
[tex]3\cdot \:2\begin{pmatrix}-2&3&0\\ -4&2&6\\ 6&-5&6\end{pmatrix}=\begin{pmatrix}-12&18&0\\ -24&12&36\\ 36&-30&36\end{pmatrix}[/tex]
Hence, option B is correct.
Step-by-step explanation:
Given the expression
[tex]3\times 2\begin{pmatrix}-2&3&0\\ \:-4&2&6\\ \:6&-5&6\end{pmatrix}[/tex]
solving
[tex]3\times 2\begin{pmatrix}-2&3&0\\ \:-4&2&6\\ \:6&-5&6\end{pmatrix}[/tex]
Scalar Multiplication: Multiply each of the matrix elements by a scalar
[tex]=\begin{pmatrix}3\cdot \:2\left(-2\right)&3\cdot \:2\cdot \:3&3\cdot \:2\cdot \:0\\ 3\cdot \:2\left(-4\right)&3\cdot \:2\cdot \:2&3\cdot \:2\cdot \:6\\ 3\cdot \:2\cdot \:6&3\cdot \:2\left(-5\right)&3\cdot \:2\cdot \:6\end{pmatrix}[/tex]
Simplify each element
[tex]=\begin{pmatrix}-12&18&0\\ -24&12&36\\ 36&-30&36\end{pmatrix}[/tex]
Therefore, we conclude that:
[tex]3\cdot \:2\begin{pmatrix}-2&3&0\\ -4&2&6\\ 6&-5&6\end{pmatrix}=\begin{pmatrix}-12&18&0\\ -24&12&36\\ 36&-30&36\end{pmatrix}[/tex]
Hence, option B is correct.
If a = 12 and b = 6, what is the length of x?
Answer:
sqrt89
Step-by-step explanation
3) y = 4x + 24
y = x + 9
Answer:
x= -5
y= 4
Step-by-step explanation:
Substitute the equations for y
x+9=4x+24
Subtract x from both sides of the equation.
9=3x+24
Now subtract 24 from both sides of the equation.
-15=3x
x= -5
y= -5=9=4
Simplify (-32) ÷ (-4)
[tex]\bold{Hey\ there!}[/tex]
[tex]\bold{Guide\downarrow}[/tex]
[tex]\bold{Negative}[/tex] & [tex]\bold{Negative}[/tex] =[tex]\bold{Positive}[/tex]
[tex]\bold{Positive}[/tex] & [tex]\bold{Negative}[/tex] = [tex]\bold{Negative}[/tex]
[tex]\bold{Positive}[/tex] & [tex]\bold{Positive}[/tex] = [tex]\bold{Positive}[/tex]
[tex]\bold{Negative}[/tex] & [tex]\bold{Positive}[/tex] = [tex]\bold{Negative}[/tex]
[tex]\bold{(-32)\div(-4)}[/tex]
[tex]\bold{=32\div4}[/tex]
[tex]\bold{=8}[/tex]
[tex]\boxed{\boxed{\bold{Answer: 8}}}\huge\checkmark[/tex]
[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{LoveYourselfFirst:)}[/tex]
Answer:
4
Step-by-step explanation:
Since both of these numbers are negative, it means that the answer will be negative, since 2 negatives make a positive, since now you know that, you can easily do 32/8 which is 4.
-32/ -8 = 4
Check....
-8 * 4 = -32
-32 / 4 = -8
When there is a negative number and a positive number being multiplied or divided by, it will always result in a negative number.
Hope this helped!
Have a supercalifragilisticexpialidocious day!
there are 12 students in a class who are preforming at the school concert . this represents 40% of the class how many students are in the class?
Answer:
There are 30 students in class
Step-by-step explanation:
Let x be the total number of students
Then according to the given statement,
40% of x is 12
this can be expressed mathematically as:
[tex]12 = 40\%\ of\ x\\12 = 0.40 * x[/tex]
we can simply use this equation to find the total number of students
[tex]12 = 0.40x[/tex]
Dividing both sides by 0.40
[tex]\frac{0.40x}{0.40} = \frac{12}{0.40}\\x = 30[/tex]
Hence,
There are 30 students in class
Please help it going to close in 15 min (7 and 8)
Ron is planning for the back-to-school rush at his store. Last year he estimated that he would need 168 notebooks, but he sold 200 notebooks. Explain how Ron can find the percent error of his estimate.
Answer:
ਮੁਆਫ ਕਰਨਾ ਮੈਨੂੰ ਬਿੰਦੂ ਚਾਹੀਦੇ ਹਨ
Step-by-step explanation:
Answer:
9807654e6785e46754
Step-by-step explanation:
Please help me please I beg u
Answer:
2 times larger
Step-by-step explanation:
Answer:
two.
Step-by-step explanation:
The circumference of a wheel is directly scaled to its radius. We're told that Kevin's tricycle wheel is eight inches in radius, and Monica's bicycle wheel is 16 inches in radius. Because 16 is equal to 2×8, we know that Monica's wheel is twice as big as Kevin's.
Please answer in only a fraction please..
Answer:
19/40
Step-by-step explanation:
1.9*(1/4) =0.475
0.475=19/40
Witch exspression is equivalent to (7^-8) (7^3)
Answer:
uhh not sure.
Step-by-step explanation:
maybe 0.000000173 * 343 wich is their values expanded
William tracks the number of sweaters he sells and the profit he makes from them.
400
350
300
250
Profit($)
200
150
100
50
Sweaters Sold
If the pattern continues, how many sweaters must William sell to profit $350?
Answer:
650 Sweaters hope this helps