10x + 7y = –8
7x + 7y = –14
Answer:
(2, - 4 )
Step-by-step explanation:
Given the 2 equations
10x + 7y = - 8 → (1)
7x + 7y = - 14 → (2)
Subtract (2) from (1) term by term to eliminate y
(10x - 7x) + (7y - 7y) = - 8 - (- 14) , that is
3x = 6 ( divide both sides by 3 )
x = 2
Substitute x = 2 into either of the 2 equations and solve for y
Substituting into (1)
10(2) + 7y = - 8
20 + 7y = - 8 ( subtract 20 from both sides )
7y = - 28 ( divide both sides by 7 )
y = - 4
solution to the system of equations is (2, - 4 )
No Solutions 6−3+4x+1= x + One Solution 6−3+4x+1= x + Infinitely Many Solutions 6−3+4x+1= x +
Complete Question:
Complete each equation, so the statement about its solution is true.
No solutions:
6-3+4x+1= __x + __
One solution:
6-3+4x+1= __x + __
Infinitely many solutions:
6-3+4x+1 = __x + __
Answer:
[tex]4 + 4x = 4x + 3[/tex] --- No solution
[tex]4 + 4x = 3x + 2[/tex] --- One solution
[tex]4 + 4x = 4 + 4x[/tex] --- Infinitely Many solution
Step-by-step explanation:
Solving (a): No solutions
6-3+4x+1= __x + __
Collect like terms
6-3+1+4x= __x + __
4+4x= __x + __
To get no solution, the coefficient of x on both sides must be the same. However, the constant must be different.
So, we can equate the expression to:
[tex]4 + 4x = 4x + 3[/tex]
Solving (b): One solution
6-3+4x+1= __x + __
This gives (same as (a))
4+4x= __x + __
To get one solution, the coefficient of x on both sides must be different. The constant can have any value.
So, we can equate the expression to:
[tex]4 + 4x = 3x + 2[/tex]
Solving (c): Infinitely many solutions
6-3+4x+1= __x + __
This gives (same as (a))
4+4x= __x + __
To get infinitely many solutions, both sides of the equation must be equal.
So:
[tex]4 + 4x = 4 + 4x[/tex]
Plz help me I’m stuck and it’s important
Answer:
2 50ml bottles
Step-by-step explanation:
Reading through the question, we have:
For 80mL
[tex]C_1 = \pounds 55[/tex]
For 2 50mL bottles.
The cost is calculated by the original cost + half the original cost.
i.e.
[tex]C_2 = \pounds 45 + \frac{1}{2} * \pounds 45[/tex]
[tex]C_2 = \pounds 45 + \pounds 22.5[/tex]
[tex]C_2 = \pounds 67.5[/tex]
Next, is to calculate the unit price of each.
For 80mL
[tex]C_1 = \pounds 55[/tex]
[tex]Unit\ price = 55/80[/tex]
[tex]Unit\ price = 0.6875[/tex]
For 2 50mL bottles.
[tex]C_2 = \pounds 67.5[/tex]
[tex]Unit\ price - 67.5/(2 * 50)[/tex]
[tex]Unit\ price = 67.5/100[/tex]
[tex]Unit\ price = 0.675[/tex]
By comparison, the 2 50mL is the best buy because it has smaller unit price
You start at (5, 4). You move right 5 units. Where do you end?
Answer:
(10,4)
Step-by-step explanation:
5 would change to 10 and 4 would stay
guys pls answer this I'll follow u if u did Find m so that ( −5 )ᵐ⁺¹ x (−5 )³ = (−5 )⁶ *
Any help please??? Also I need a explanation on how you did it that would very much help me :)
Gwendolyn is asked to solve the equation −4(x−3)=20. She shows the work below and states that the solution is x=−8. −4(x−3)=20−4x+12=20−4x=32x=−8 Unfortunately, Gwendolyn's work is flawed. Explain the flaw in Gwendolyn's work. Determine the correct solution to the equation.
Step-by-step explanation:
The equation is given as;
−4(x−3)=20
Gwendolyn's flaw is in the following lines;
−4x + 12 = 20
−4x = 32
When collecting like terms, the moment 12 crosses over, it becomes - 12 and not + 12
The correct solution is given as follows;
Step 1: Expand the brackets
This results to;
- 4x - (-4 * 3) = 20
-4x + 12 = 20
Step 2: Collect like terms
This results to;
- 4x = 20 - 12
- 4x = 8
Step 3: Solve for x
x = 8 / (-4)
x = -2
A survey was done that asked students to indicate whether they enjoy reading or playing video games. What is the ratio of those who do not enjoy reading and those who do not enjoy playing video games? A survey was done that asked students to indicate whether they enjoy reading or playing video games
Answer:
9:3
Step-by-step explanation:
Please find attached the information required to answer this question
From the upper right corner, there are 8 people who do not like reading.
On the lower right corner of the table, there is 1 one person who does not like reading and playing video games
On the lower left corner, there are two people who do not like playing video games.
The total number of people who do not like reading = 8 + 1 = 9
The total number of people who do not like playing video games = 2 + 1 = 3
= 9 : 3
Which of the following coordinates does this line pass through?
(1,5)
(0,0)
(3,5)
(2,3)
Answer:
(3, 5)
Step-by-step explanation:
What is the volume of this sphere to the nearest hundredth?
PLEASE HELP ASAP
Answer:
Step-by-step explanation:
kjhm,,
Ruth Behr has ¾ liters of soda in her refrigerator. She poured 1/8 liter of soda in multiple cups. Enter the number of cups Ruth filled with soda
Answer:
6
Step-by-step explanation:
3/4*8=6
The requried number of Ruth filled with soda is 6 cups.
What is the Ratio?The ratio can be defined as the comparison of the fraction of one quantity towards others. e.g.- water in milk.
Here,
To find the number of cups Ruth filled with soda, we need to divide the amount of soda she poured into cups by the amount of soda in each cup.
Ruth poured 1/8 liter of soda into cups. To convert this to cups, we need to know that 1 liter is equal to 4 cups. So, 1/8 liter is equal to:
(1/8) x 4 cups = 0.5 cups
Ruth has 3/4 liters of soda in her refrigerator, which is equal to:
(3/4) x 4 cups = 3 cups
So, the number of cups Ruth filled with soda is:
= 3 / 0.5
= 6 cups
Thus, the requried number of Ruth filled with soda is 6 cups.
Learn more about Ratio here:
brainly.com/question/13419413
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Helllllppppppppppppp brainliest will happen if right
FIND THE AREA (LEAVE EXPLANATION)
Answer:
33 Cm
4x6 is 24
to find the top (triangle) You have to use A= height and base divided by 2.
Basically multiply like a square and divide by two
For the explanation I multiplied 6 by 4 (24 Cm) for the first part and then multiplied (3x6)/2 (9 Cm) for the second part giving me a total of 33 Cm.
3. Write and solve an equation to
determine the value of x. (Examples 3–5)
(3x)
45°
H
K
Answer:
[tex]x = 27[/tex]
Step-by-step explanation:
Given
The attached figure
Required
Solve for x
3x and 45 are supplementary angles
So:
[tex]3x + 45 = 180[/tex]
[tex]3x =- 45 + 180[/tex]
[tex]3x =135[/tex]
Solve for x
[tex]x = 135/5[/tex]
[tex]x = 27[/tex]
3.
Nevaeh ran 21 kilometers in 5 hours. If she ran at a constant speed, how many
kilometers did she run in 2 hours?
A. 8.4 kilometers
B. 4.2 kilometers
C 1.2 kilometers
D. 42 kilometers
Answer:
a) 8.4 kilometers
Step-by-step explanation:
21 kilometers ÷ 5 hours = 4.2 kilometers per hour
4.2 kilometers x 2 hours = 8.4 kilometers
what is the minimum value of "f(x)=7(x-8)^2+5" ?
minimum is: (8,5)
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if you ever need help you can use a source that has a caculator.
Helpp me pleasee (algebra)
Answer:
Step-by-step explanation:
answer = 1/2 r + m
m = 7
r = 8
answer = 1/2 * 8 + 7
answer = 4 + 7
answer = 11
If sin theta= 4/5 and theta is in quadrant 2, the value of cot theta is . if necessary, use the slash mark ( / ) for a fraction bar.
If sin θ= 4/5 and theta is in quadrant 2, the cot θ would be -3/4.
Which trigonometric functions are positive in which quadrant?
In first quadrant (0 < θ < π/2), all six trigonometric functions are positive.
In second quadrant(π/2 < θ < π), only sin and cosec are positive.
In the third quadrant (π < θ < 3π/2), only tangent and cotangent are positive.
In fourth (3π/2 < θ < 2π = 0), only cos and sec are positive.
Given information; If sin θ= 4/5 and theta is in quadrant 2, we need to find the value of cot theta.
Since it’s in second quadrant, cos is going to be negative.
So, a^2 + 4^2 = 5^2
a^2 + 16 = 25
a^2 = 25 - 16 = 9
a = 3
therefore, we can conclude that cos θ = base / hypotenuse
cos θ =-3/5
Also, tan θ would be -4/3 and then cot θ would be -3/4.
Learn more about trigonometric ratios here:
https://brainly.com/question/22599614
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Help me please I need help
Answer:
x = 180
∠DBC = 23
∠ABC = 157
Step-by-step explanation:
A straight line is always 180 degrees
A to D line = 180
6x + 19 + x = 180
7x + 19 = 180
-19 -19
7x = 161
/ 7 / 7
161 /7 = 23
x = 23
Then plug it in
6x + 19
6 ( 23 ) + 19 = 157
x
x = 23
Hope this helps !
PLEASE ANSWER QUICK WILL GIVE 5 STARS
The number $y$ of calories burned after $x$ minutes of kayaking is represented by the linear function $y=4.5x$ . The graph shows the number of calories burned by hiking.
You perform each activity for 45 minutes. How many total calories do you burn?
Answer:
202.5 calories
Step-by-step explanation:
y = 4.5x where y is the calories burned and x is the minutes
Let x = 45 minutes
y = 4.5 * 45
y =202.5 calories
Answer:
The average person burns 375 – 475 calories per hour kayaking.
The number of calories burned kayaking depends on your weight, the distance and speed you kayak, and difficulty of terrain. A 200-pound (90.8kg) person will burn 477 calories per hour kayaking with moderate effort. A 150-pound person will burn 358 calories per hour with the same activity.
Step-by-step explanation:
DO THESE THREE PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
3) 13(G)=143
4) 8.30-235=C
5) T+3/5=36
i dont know if 5 is right but i tried
help please and thanks
Answer:
a function
Step-by-step explanation:
trust the process
hey guys help me it’s some questions for math
Answer: you cannot
Step-by-step explanation:
being divorced and making golf courses aren't directly related
In terms of pi what is the volume of the sphere 60 ft radius
Answer:
I think it’s 360
Step-by-step explanation:
HELP!! Which inequality is represented by the following
graph
Answer:
x is more than or equal to 9
Step-by-step explanation:
The dot is closed.
Which two angle pairs form complementary angles?
78°,13°
73°,17°
118°,107°
78°,22°
You have 3/4 cup of berries. How many desserts can be made using 1/8 cup of berries for each dessert?
Answer:
6 desserts
Step-by-step explanation:
3/4 is equal to 6/8, if you use 1/8 for each dessert you will have 6
23+1×6÷130+2=
right now please
Answer:
25.04
Step-by-step explanation:
The answer is 25.04 (someone just deleted my answer so i'm just doin it again)
What is the value of x
?
Answer:
the value of x is 9
Step-by-step explanation:
A student sorted 950 crayons into boxes that hold 36 crayons each. How many more crayons will the student need to completely fill the last box? A 6
Answer:
14 crayons
Explanation:
Once you divide the remainder is 14 so you add 14