how do i know if a system of equation has infinite number of solutions
Sam and his friend are working at the body shop. Sam can do the work in 7hours. When his friend is helping him they do the same work in 4 hours. How long does it take Sam's friend to do this work alone?
Answer:
28/3
Step-by-step explanation:
because 1/7+x=1/4
x=3/28
recipricol of 3/28=28/3
28/3
I need help hurry !! Please , which one is correct?
Answer:
13
Step-by-step explanation:
I used the calculator heheh
Hope It Helps
Geometry - more triangle proofs
Answer:
because SAS , NYC , PAC all are together
Step-by-step explanation:
The given statement in the question is SAS.
We are given that;
Trapezoid NYAP
Now,
Two triangles are said to be congruent if the length of the sides is equal, a measure of the angles are equal and they can be superimposed.
One possible given statement is that ∠NYC = ∠PAC.
This is because the base angles of an isosceles trapezoid are congruent. Since C is the midpoint of YA,
we know that YC = CA by the definition of midpoint.
Also, NC = CP is given.
by SAS, we can conclude that △NYC ≅ △PAC.
Therefore, by congruent triangles the answer will be SAS.
Learn more about congruent triangles;
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Jennifer is shopping with her mother. They pay $2 per pound for tomatoes at the vegetable stand.
A. Find the constant of proportionality in the situation.
B. Write an equation to represent the relationship.
Mike had 84 dollars to spend on 9 books. After buying them he had 12 dollars.
How much did each book cost?
Answer:
$8
Step-by-step explanation:
Answer:
each book cost 8 dollars
Find the slope of the line.
Using the two points given, we can plug them into m = (y2 -- y1) / (x2 -- x1)
(-2,4) (3,-2)
-2-4/ 3--2 = -6/5
Therefore the slope of the line would be [tex]-\frac{6}{5}[/tex]
or D
PLEASE HELP!! PLEASE PUT HOW TO DO IT ASWELL!!
Answer:
4%
Step-by-step explanation:
1. Subtract: 55 - 52.8 = 2.2
2. Divide: 2.2/55 = 0.04
3. Multiply: 0.04 x 100 = 4
- 1(t+8) =7.1 please hurry
Answer:
t=-15.1
Step-by-step explanation:
Answer:
t = −15.1
Step-by-step explanation:
The measure of an interior angle of a regular polygon is given. Find the number of sides in the polygon.
A. 144 B. 156
(5,2) is reflected across x-axis. The new point is on:
A. (5,-2)
B. (-5,2)
Answer:
I believe it would be (5,-2)
Step-by-step explanation:
(5,2) is in quadrant 1 and if it is reflected on the x axis then I think it would be (5,-2). Correct me if im wrong.
17. Solve v =
(7)(-3).
Answer:
-21
Step-by-step explanation:
(7)(-3) = 7 x -3 = -21
The Kid Laroi
12:3:9=? I dont know
What is the slope below?
Answer:
2/3
Step-by-step explanation:
rise 4 run 6 simplifies to 2/3
Use the GCF to factor 32x+56
Answer:
8
Step-by-step explanation:
The factored form of the given expression is 8(4x+7).
What is GCF?GCF stands for Greatest Common Factor, it is the highest common factor of each of the term in the expression.
Express each term of the given expression in the form of factors.
32x+56=8·4·x+8·7
From both terms, the highest common factor, that is, GCF is 8.
Factor out 8 from the terms.
8(4·x+7)=8(4x+7)
Thus, the factored form of the given expression is 8(4x+7).
To learn more on GCF click:
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There were 2.1 million people living in Dubai in 2013
1.75 million of these people were not born in Dubai.
Work out 1.75 as a percentage of 2.1
Answer:
5/6 I believe Because there is a repeating 3. .83333333 told me .833333_ as a fraction is 5/6
Step-by-step explanation:
What number is 45.5% of 75
Answer:
3412.5
Step-by-step explanation:
45.5x75
6825/2 =3412.5
Answer:
65 is my answer because it honestly fells right
Please help. Thank you!
Answer: See explanation
Step-by-step explanation:
By the Triangle Inequality Theorem, the length of the side must be greater than 1 ft because the sum of two side lengths must be greater than the length of the third side. The third side must be less than 7 ft but greater than 1 ft.
Triangle inequality: 1 < x < 7
Hope that helped!
helppppppppppppppppp
Answer:
what u need help with ?????
Can someone please help me ?
Answer:
160
Step-by-step explanation:
To solve this we will use the equation
Distance= Velocity * Time
We will first need to calculate the time flown
So we have
960=480*time
Divide and get time=2
We now need to find the new velocity considering wind speed and we can do this by writing a new equation
We have
640=velocity*2
divide and get that velocity=320
This is the speed that the plane was going with the wind resistane which means that to calculate the wind resistance you subtract 320 from the plane's normal speed of 480
so 480-320=160
Food bill: $45
Tip: 18%
Sales tax (on food only): 5.5%
Answer:
$55.58
Step-by-step explanation:
First off turn your percent to decimals then times it by 45 like this
45 x 0.18 = 8.10
45 x 0.055 = 2.475 - 2.48 (round this one up)
Now add them all together
45 + 8.10 + 2.48 = 55. 58
ANSWER: $55.58
What is the image point of (2,0) after the transformation rx-axis o T1,-1?
Answer:
-2,0
Step-by-step explanation:
Answer:3,1
Step-by-step explanation:
PLEASE I NEED HELP ASAP!!
A birthday clown charges $15 per visit plus $27.50 per hour. If the clown charged $97.50 for Jessica's party, for how many hours did the clown perform at the party?
Answer:
3 hours
Step-by-step explanation:
97.5-15=82.5
82,5/27.5=3
The value of (-6) - 6 - (-6) ?
Step-by-step explanation:
Consider the given expression,
Let,
x=
6+
6+
6+
6..........∞
Now,
x=
6+x
x
2
=6+x
x
2
−x−6=0
x
2
−3x+2x−6=0
x(x−3)+2(x−3)=0
(x−3)(x+2)=0
x=3or−2
Hence,this is the answer.
Can someone help me #1
Answer:
8×8×8 x 8×8×8×8×8
Step-by-step explanation:
I'm not completely sure if this is what the question is asking so I hope this helps
Please help with this 1 question! -3-||
[tex] \frac{20}{100} (100x) = \frac{80}{x} (100x) \\ \frac{20}{ \cancel{100}}( \cancel{100} \: \: x) = \frac{80}{ \cancel{x}} (100 \cancel{x}) \\ 20x = 80(100) \\ 20x = 8000[/tex]
Solve the equation for x-term.[tex]x = \frac{8000}{20} \longrightarrow \frac{800 \cancel{0}}{2 \cancel{0}} \\ x = \frac{800}{2} \longrightarrow \frac{ \cancel{800} \: \: 400}{ \cancel{2} \: \: 1} \\ x = 400[/tex]
Answer CheckSubstitute x = 400 in the equation.
[tex] \frac{20}{100} = \frac{80}{400} \\ \frac{ \cancel{20} \: \: \: 1}{ \cancel{100} \: \: \: 5} = \frac{ \cancel{80} \: \: \: 1}{ \cancel{400} \: \: \: 5} \\ \frac{1}{5} = \frac{1}{5} [/tex]
The equation is true for x = 400. Therefore the answer for equation is x = 400.
Answer[tex] \large\boxed{x = 400}[/tex]
Answer: 400
Explain: Just do 80/20 and get 4 then do 100 times 4
回答:400
説明:80/20を実行して4を取得し、次に100回4を実行します
Use a common denominator 1/6 7/10
Evaluate 3x + 15 when the x is replaced with 2, 3, and 5?
Answer:
3(2) + 15= 21; 3(3) +15= 24; 3(5) + 15= 30
Step-by-step explanation:
just plug in your x values and then solve
What should you do to each side of the equation to solve -32+x=53?
Answer: c. add 32
Step-by-step explanation:
Answer:
add 32
Step-by-step explanation:
it will solve for x
Select all that apply.
Which lines have a slope of -2?
Answer:
Line ALine BStep-by-step explanation:
When the problem is asking which lines have a slope of -2, this is referring to the steepness or rate of change. To determine which lines have a slope of -2, the line must have a rise of -2 and a run of 1. This means that the line will go down 2 units every 1 unit to the right.
Also, if a line is parallel (lines which never cross), it will have the same slope.
You can also eliminate lines c, and d because they increase while lines a, and b decrease. A and B have the same slope because they are parallel and decrease which means that this must be the answer.