Solve the system of equations by substitution.
x+y= 0
2x+3y= 3
A. (-3,3)
B. (3,-3)
C. (-1,1)
D. (1,-1)
Answer:
the answer is Option A) ( -3, 3)
Step-by-step explanation:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
( -3, 3)
PLZS ANSWER WILL GIVE BRAINEST
Answer:
x=50
Step-by-step explanation:
67=x+17
67-17=50
x=50
A telephone pole casts a 32-foot shadow, while a street sign next to the pole casts a 12-foot shadow. If the
telephone pole is 40 feet tall, what is the height of the street sign?
12
Answer: The height of street sign = 15
Step-by-step explanation:
At the same time, the angle made by the light on each object is the same.
Pole and street sign both standing vertical to the ground.
So triangle made by both of them are similar
The sides of similar triangles are proportional,
[tex]\dfrac{\text{height of street sign}}{\text{height of pole}}=\dfrac{\text{Length of the shadow made by street sign}}{\text{Length of the shadow made by pole}}\\\\\dfrac{\text{height of street sign}}{40}=\dfrac{12}{32}\\\\\text{height of street sign}=\dfrac{12}{32}\times40=15[/tex]
Hence, the height of street sign = 15
What is the domain of the linear function below?
Y=6x+3
A. All negative numbers
B. All positive numbers
C. Integers only
D. All real numbers
10. Mason earns $10 for each lawn he mows. How much will he earn if he mows 6 lawns?
A. Write and solve an equation to solve the problem. Show your
work.
Answer:
60
Step-by-step explanation:
just multiply 10 by 6 why is this in highschool math though.
What is the slope of the line passing through points (2, 1) and (5, 7)?
Answer:
(3, 6)
Step-by-step explanation:
(x1, y1) and (x2, y2)
x2 - x1, y2 - y1
(x*, x*)
(2, 1) and (5, 7)
5 - 2, 7 - 1
(3, 6)
Can someone do my math homework for me? i will give you the information you need. My head hurts constantly and i get too distracted easily. i am one almost 2 weeks behind on all my classes work. Math is the hardest and so thats why im asking. please it would be very helpful.
Answer:
I'll do your Home work Just post the questions
Answer:
I will help you too if I know the answer
Step-by-step explanation:
If you apply the changes below to the linear parent function ,f(x)=|x| over the x-axis what is the equation to the new function
Answer:
Answer: A. G(x)= ax=y= - f(x) is flip over x-axis. Therefore, f(x) =14x would become f(x) =-14x. Therefore, final transformed function f(x)=-14x is vertically stretch by a factor of 14 and flip over the x-axis.
Step-by-step explanation:
Will mark Brianliest please answer :)
Answer:
3.5×10^4=35000
Step-by-step explanation:
Consider the value
3.5
we are saying that we are counting in units (1's) in that we have
3
1
2
of 1's
'.....................................................................................
Consider the value
3.5
×
10
. Now we are saying we have
3
1
2
of tens. That is; 3 lots of 10 is 30 and
1
2
of 10 is 5 so we have
30
+
5
=
35
'.................................................................................
Note that
10
2
is 100
Consider the value
3.5
×
10
2
. Now we are saying we have
3
1
2
of
100
'
s
So if we are counting in 100's then the decimal point stays where
it is and we move the number of 3.5 to the left until the
3 becomes hundreds.
Note that we have to insert a place holder of 0 just to the left of the decimal point to make sure the three is viewed as in the hundreds.
3.5
×
10
2
−−−−−−−−−−−−−−−−−−→
slide to the left 2 places
350.0
A. (0,5)
B. (0,2)
C. (-1,3)
D. (-3,-1)
Answer:
(0,5)
x,y
Step-by-step explanation:
Help please and Thanks :))
Whats the volume of the cone?
use the fórmula V=1/3πr^2h.
D is correct. you’re welcome.
please help me if you do not know do not answerr
Answer:
Quadratic
Step-by-step explanation:
Example of linear is 2x + 3
Example of quadratic is x² + 2x + 3
Example of cubic is x³ + 2x² + 3x + 4
Example of quartic is x⁴ + 2x³ + 3x² + 4x + 5
Work out each of the following:
1) −5 − +23=
2) −16 + −15=
3) 40 − −40=
4) −18 − −27=
5) −52 + 90=
HELPPP PLEEEAAAASSSSEEEE!!!! :(
I need those answers before 09:30 pleeeaaaaassssseeee
Find the volume of the solid. Round your answer to the nearest tenth.
The length of a rectangle is 1 yd more than twice the width, and the area of the rectangle is 45 yd2 . Find the dimensions of the rectangle. Length : Width :
Answer: length = 10 yards
Width = 4.5 yard
Step-by-step explanation:
Let the width be represented by x.
Since the length of a rectangle is 1 yd more than twice the width. This will be:
= (2 × x) + 1
= 2x+1
Area = 45
Note that length × breadth = Area
(2x + 1) × x = 45
2x² + x = 45
Equate the equation to 0
2x² + x - 45 = 0
2x² + 10x - 9x - 45 = 0
2x(x + 5) - 9(x + 5) = 0
(2x - 9) = 0
2x = 9
x = 9/2
The width is 4.5 yard
Length = 2x + 1
= 2(4.5) + 1
= 9 + 1
= 10 yard
Use your plan of dividing both sides by five to solve the equation. What is the value of x?
Need help math question worth 30 points help plzzzzzz
Answer:
c
Step-by-step explanation:
because the real awnser is 57/4 but simpfly
Answer:
C) [tex]14\frac{1}{4}[/tex]
explanation:
[tex]4\frac{5}{6} +4\frac{2}{3} +4\frac{3}{4} \\\\\frac{29}{6} +\frac{14}{3} +\frac{19}{4} \\\\\frac{58}{12} +\frac{56}{12} +\frac{57}{12} \\\\\frac{171}{12} \\\\14\frac{1}{4}[/tex]
Which expression can be used to find measure angle R
Answer:
cos-1(-4/14)
Step-by-step explanation:
If
4.5=r
3.5=s
2=t
By law of cosines:
[tex]r^{2}=s^{2}+t^{2} -2st cosR\\\\CosR= \frac{r^{2} -s^{2} -t^{2} }{-2st} \\\\R=cos^{-1} (\frac{(4.5)^{2}-3.5^{2} -2^{2} }{-2(3.5)(2)} )\\R= cos^{-1} (-\frac{4}{14} )[/tex]
What is the height of the cylinder in the diagram? Round your answer to the nearest whole number.
Answer:
8 is the height
Step-by-step explanation:
please mark this answer as brainlest
Order these numbers from least to greatest. 7.63, 7.6032, 7.6,
Answer:
7.6032,7.63,7.6
Sorry if I am wrong.
Step-by-step explanation:
A line that includes the point (2,7) has a slope of
–
8. What is its equation in point-slope form?
Use the specified point in your equation. Write your answer using integers, proper fractions, and improper fractions. Simplify all fractions.
Answer:
y - 7 = -8(x-2)
Step-by-step explanation:
The point slope form is: y-y1=m(x-x1)
From the information that was given, we know our two points: (2,7)
From here, we can fill in some of the missing information: y-y1=m(x-x1) → y - 7 = m(x-2)
Now I can't tell if you wrote down -8 or just 8, but just in case my answer isn't the right number.
The answer would either be: y - 7 = -8(x-2) [if you wrote down -8 as the slope]
OR
The answer would be: y - 7 = 8(x-2) [if you wrote down 8 as the slope]
Taylor went shopping for a new camera. Sales tax where she lives is 4.5%. The price of the camera is $28. Find the total price including tax. Round to the nearest cent.
Answer:
I think the answer would be 29.30 . good luck ^^
Which of the following equations has exactly one solution?
Answer:
A and B
Step-by-step explanation:
simplify both sides of the equation
add 4x to both sides subtract 3 from both sides. Divide both sides by 9 and that's it
If the equation given a unique and single value of variable after solving then the equation is said one solution equation.
The equation which has only one solution are,
[tex]5x+3=-2(2x+3)[/tex]
Thus, the option C is the correct option.
How to find one solution of equation?
If the equation given a unique and single value of variable after solving then the equation is said one solution equation.
Such equation gives exactly one solution.
Given information-
To find the equation we have to solve each equation one by one.
A)The equation given in the problem is,[tex]-7x+2&=-3(x-3)-4x-7\\[/tex]
Solve it further,
[tex]-7x+2&=-3x+9-4x-7\\-7x+2&=-7x+2\\.\;\;\;\;\;\;\;\;\;\;\;0=0[/tex]
Thus this equation has no solution. Hence the option A is the incorrect option.
B)The equation given in the problem is,[tex]14x&=7(2x+2)[/tex]
Solve it further,
[tex]14x&=14x+14\\.\;\;\;0=14[/tex]
Thus this equation has no solution. Hence the option B is the incorrect option.
C)The equation given in the problem is,[tex]5x+3=-2(2x+3)[/tex]
Solve it further,
[tex]5x+3=-(4x+6)\\5x+3=-4x-6[/tex]
Bring the same variable terms one side.
[tex]5x+4x=-6-3\\9x=-9\\x=-1[/tex]
As the expression of equation gives the value of variable which is -1.Thus this equation has one solution.
Hence the option C is the correct option.
D)The equation given in the problem is,[tex]3(4x+2)-9=12x-3[/tex]
Solve it further,
[tex]12x+6-9=12x-3\\2x-3=12x-3\\.\;\;\;\;\;\;\;0=0[/tex]
Thus, this equation does not has one solution.
Hence the option D is the incorrect option.
Hence the equation which has only one solution are,
[tex]5x+3=-2(2x+3)[/tex]
Thus, the option C is the correct option.
Learn more about the solution of equation here;
https://brainly.com/question/21283540
Please help me best one gets brainlist and 5/5
Answer:
8
Step-by-step explanation:
Area π 1.5^2 = 7.07cm^2
Volume = 56.52 /7 = 8cm
So go for the 4th answer = 8
can anyone help me???
Answer: think A
Step-by-step explanation:
pleas help meeeeeeeee !!
5. The circumference of the earth is about 24,855miles. Find the surface area of the Western Hemisphere of Earth.
Answer:
oh my answer is in the explanation
Step-by-step explanation:
it
is
quite
big
How many tiles will be in figure 100?
NEED THIS ONE asap,
Will give brainlest
i need help please!
what fraction divided by 3 over 4 equals 1 over 6
Answer:
1/8
Step-by-step explanation:
1/8 ÷ 3/4
1/8 × 4/3
1/2 × 1/3 = 1/6