Answers
Answer:
no solutions
Step-by-step explanation:
x+y = 5
-2x-2y = 10
Multiply the first equation by 2
2x+2y =10
Add this to the second equation
2x+2y =10
-2x-2y =10
0 =20
This is not true so there are no solutions
Related Questions
divide Rs 120 between two students so that one gets 4 times as much as the other
Answers
Answer:
One gets Rs 24 and the other Rs 96.
Step-by-step explanation:
Number of parts = 1 + 4 = 5
So one student gets 1/5 of 120 and the other gets 4/5 of 120
120 * 1/5 = 24
120 *4/5 = 4*24 = 96.
Answer:
One would get 96 and another would get 24
Step-by-step explanation:
So first lets create an equation from the words where 4x is what one students has and x is what another has :
120 = 4x + x
Lets solve this now!
120 = 5x (divide by 5 on both sides)
24 = x (1st Student)
(Multiply by 4 on both side to get the second student)
96 =4x (2nd Student)
Choose the solution to this inequality.
72≥b+95
A. b≥25
B. b≤1710
C. b≤−23
D. b<227
Answers
Answer:
C
Step-by-step explanation:
72≥b+95
Group like them
72-95 ≤ b
the sign changes due to the negative
-23 ≥ b
A point is chosen randomly on KN. Identify the probability that the point is on KL or MN. The figure shows segment K N with two points L and M on it in order from left to right. The length of segment K L is 3 units. The length of segment L M is 7 units. The length of segment M N is 8 units.
Answers
A point is chosen randomly on KN. The probability that the point is on KL or MN would be 11/18.
What is the probability?Probability refers to a possibility that deals with the occurrence of random events. The probability of all the events occurring need to be 1.
P(E) = Number of favorable outcomes / total number of outcomes
The length of segment K L is 3 units.
The length of segment L M is 7 units.
The length of segment M N is 8 units.
The length of the segment KL + MN
KL + MN = 11
The total length of the segment KN
KL +LM + MN
3 + 7 + 8 = 18
SO, The probability that the point is on KL or MN = 11/18
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The production costs, C, in thousands of dollars, for an
energy drink company to manufacture cans of energy
drink is given by the model C(x) = 50 +3.8x -0.0038x^2,
where x is the number of cans of energy drinks produce
in one day, in thousands. The company wants to keep i
production cost at or below $781.12.
Given that x is an element of a subset of the integers,
which of the following constraints satisfy the domain of
C(x)?
The answer choices are in the picture.
Answers
If the company wants to keep its production costs under $781.12 a reasonable domain for the constraint x is -12.9892≤ x ≤ 1012.99.
What are constraints?A constraint is a condition of an optimization problem that should be satisfied the condition.
Let x is an element of a subset of the integers,
C(x) is the production cost, in thousands of dollars
[tex]C(x) = 50 +3.8x -0.0038x^2,[/tex]
This is a vertical parabola open downward (the leading coefficient is negative)
we know that
For the interval [-12.9892, 1012.99] = -12.9892≤ x ≤ 1012.99
The value of C(x) = C(x) < 781.12
That means the production cost is under $781.12
Remember that the variable x (number of tires) cannot be a negative number.
If the company wants to keep its production costs under $175,000 a reasonable domain for the constraint x is -12.9892≤ x ≤ 1012.99
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For a craft project, you select the four packages of modeling clay and the set of tools shown at the right. If there is a 6% sales tax, what is the total cost?
Answers
Answer:
13.727
Step-by-step explanation:
Explanation
Given: You choose the four packages of modeling clay and the set of equipment indicated on the right for a creative project.
To find: the total cost if there is a 6% sales tax.
We will calculate the total cost of each item and then add.
Tip
The total cost formula is used to combine the variable and fixed costs of providing goods to determine a total.
The formula is: Total cost = (Average fixed cost x average variable cost) x Number of units produced.
Step 1
The cost of 4 packets of clay is given by:
4 x $2.79
Step 2
We will calculate the product:
4 x 2.79 = 11.16
Step 3
We will add the cost of 4 packets of clay and a pack of tools to get the total cost without tax:
$(11.16 + 1.79)
Step 4
We will add the numbers:
11.16 + 1.79 = 12.95
Step 5
The 6% tax on the total price is given by:
6% x $12.95
Step 6
We will calculate the sales tax:
6/100 x 12.95 = 0.777
Step 7
We will add the total cost without tax and tax amount to get the total amount paid:
$(12.95 + 0.777)
Step 8
We will add the amounts:
12.95 + 0.777 = 13.727
Step 9
YOU ALL DONE!
I SAY CAN YOU, YOU SAY GIVE ME THANKS, CAN YOU_GIVE ME THANKS!!!
Santos takes the train into the city five days a week for work. For one work week, he kept track of how many minutes long each train ride was: 48, 51, 48, 48, 50
Calculate the mean, median, range, and midrange of the train ride times for the week.
Answers
The mean, median and range of the given data are respectively; 49, 48 and 3.
How to calculate mean, median and range?Formula for mean is;
Mean = Total sum/sample size
Total sum = 48 + 51 + 48 + 48 + 50
Total sum = 245
Sample size = 5
Mean = 245/5
Mean = 49
To get the median, we arrange in ascending order and pick the mid term.
48, 48, 48, 50, 51
Median is mid term which is 48.
Range is difference between highest and lowest term.
Range = 51 - 48
Range = 3
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Find the volume of the box
3ft
5ft
6ft
Answers
Answer:
90ft^3
Step-by-step explanation:
What is the value of x in the equation 4 (2x + 14) = 0?
9, 7, -7, -9.
Answers
Answer:
x = -7
Step-by-step explanation:
First step is to expand the left side of the equation. To do this, multiple 4 by each term on the inside of the paratheses.
4 * 2x = 8x
4 * 14 = 56
This gives you the equation:
8x + 56 = 0
Now, get the x term on one side by itself by subtracting 56 on both sides:
8x = -56
And solve for x by dividing both sides by 8:
x = -7
Please help me ASAP!! Calling all experts, will give brainliest too!
The height of a candle decreases from 10 centimeters to 6 3/4 centimeters after burning for 1/2 hour
Answers
The true statement is as follows:
The product 13 / 4 × 2 can be used to find the unit rate in cm per hour.
After one hour, the height of the candle will have decreased by 6 1 / 2 cm.
What is rate?Rate is the ratio between two related quantities in different units.
The height of the candle decreases from 10 cm to 6 3 / 4 cm after burning for 1 / 2 hours.
6 3 / 4 cm = 27 / 4 cm
10 - 27 / 4 = 40 - 27 / 4 = 13 / 4 cm
Therefore, 13 / 4 cm of candles were lost in 1 / 2 hours.
Rate = 13 / 4 × 2 = 26 / 4 = 13 / 2 cm per hour
Therefore, the product 13 / 4 × 2 can be used to find the unit rate in cm per hour.
13 / 4 + 13 / 4 = 13 + 13/ 4 = 26 / 4 = 13 / 2 = 6 1 / 2 cm.
Therefore, after one hour, the height of the candle will have decreased by 6 1 / 2 cm.
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how many solutions does the equation 5 + -5 + -12 equals 14 - 2 have?
0, 1, 2, many
Answers
Hey there!
5 + -5 + -12 = 14 - 2
ASSUMING….
5 - 5 - 12 = 14 - 2
0 - 12 = 14 - 2
-12 = 12
-12 ≠ 12
Thus, your answer should be:
FALSE or simply 0 solutions
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
A grocery store sells chicken for $4.25 per
pound. What would be the cost of 3 lb of
chicken?
A. $15.30
B. $14.25
C. $7.85
D. Not Here
Answers
Answer:
d (not here)
Step-by-step explanation:
4.25 * 3 is 12.75
Answer:
the answer is 12.75
Step-by-step explanation:
because if each lb of chicken costs $4.25 then 3lb of chicken would be 12.75 becuase 4.25 x 3 = 12.75 hope this helps <3
It is always helpful to rewrite a quadratic equation in standard form as a first step in solving it.
A. FALSE
B. TRUE
Answers
Answer:
A
Step-by-step explanation:
Now when I think of solving it, I think of finding the zeros. Now if you start with the form, for example:
[tex](x+3)(x-3)[/tex]
Then you can easily see the zeros are -3 and 3.
But if you start with the standard form:
[tex]ax^2+bx+c=0\\or\\x^2-9[/tex]
It will be harder to find the zeros and you would do the eqation or factor it.
So if your in the factored form don't go to standard to find the zeros.
The given statement is False.
What is a quadratic equation?An equation with highest degree two, is considered as a quadratic equation.
In standard form, the right side of an equation should be 0 and every component on the left side should be 1.
For example, x² = 4; to express this in standard form, move the number 4 to the left side of the equation, resulting in x² - 4 = 0.
If you are asked to find x in this circumstance, there is no need to write the equation in standard form; simply take this same real number of both of the equation's sides to find x.
Hence, it is not always necessary to write the quadratic equation in standard form then solve.
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What is the measure of angle y in this figure?
Answers
i dont understand it can you help me with the rest?
Answers
Answer:
top: 0.7, 0.9
bottom:7/10
0.7 = 7/10 because 7 is under tens. If it was 0.34 = 34/100 because 34 is in the hundereds. If it was 0.100 = 100/1000 because 100 is under the thousands. pls brainly trying to level up
I Need Help ASAP or i will go to DETENTION!!!!!!!!
Answers
Answer:
m<FLS=108 degrees
m<SLT=72 degrees
m<ALG=18 degrees
Step-by-step explanation:
(3x) + (4x +12) = 180
x = 24
4x + 12 = 108 = m<FLS
180 - 108 = 72 = m<SLT
SLG = 72 + 90 + x
x = 18 = m<ALG
What is the area of triangle BCD to the nearest tenth of a square centimeter? Use special right triangles to help find the height. ( Show your work). Will Only Mark Brainliest if answered correctly and No resharing another students answer from brainly or any other websites or you'll be reported.
Answers
Answer:
Area = 21.7 cm² (nearest tenth)
Step-by-step explanation:
A 30-60-90 triangle is a special right triangle. The measures of its sides have a special relationship in that they are in proportion:
shortest leg : longest leg : hypotenuse = 1 : √3 : 2
The side opposite 30° is the shortest legThe side opposite 60° is the longest leg and is √3 times the length of the shorter leg. The side opposite 90° is the hypotenuse and is twice the length of the shorter leg.So we can also write the ratio as [tex]x : x\sqrt{3} : 2x[/tex] where [tex]x[/tex] is the shortest side.
From inspection of the diagram, the shortest side is 5 cm
⇒ BC (height) = 5 × √3 = 5√3 cm
Now we have the height, we can calculate the area.
Area of a triangle = 1/2 x base x height
= 1/2 x 5 x 5√3
= 21.7 cm² (nearest tenth)
8. Select the expression that is equivalent to 12/48.
A. 6(8+6)
B. 12(4+1)
C. 4(44+3)
D. 8(6+4)
Answers
A:
6(8+6)
= 48+36
=84
B: 12(4+1)
=48+12
=60
C:
4(44+3)
=176+12
=188
D:
8(6+4)
=48+32
=80
Find the area of the triangle below. Be sure to include the correct unit in your answer.
Answers
Answer:
ft²
Step-by-step explanation:
times the number by two
Which is a characteristeric of an effective problem statement
Answers
What is the square root of 2π√a anyone who answers correct will be given BRAINIEST ANSWER
Answers
Answer:
Step-by-step explanation:
[tex]\sqrt{2\pi \sqrt{a} } =\sqrt[4]{4\pi ^2a}[/tex]
Answer:
Step-by-step explanation:
Round the number. Write the result as the product of a single digit and a power of 10. 0.0000001801
Answers
Answer:
2x10 to the -7 power
Step-by-step explanation:
hope this helps!
find the matrix or -2A + 7B
Answers
Answer:
matrix is 1 x 2
Step-by-step explanation:
The order, or dimension, of a matrix is the number of rows and columns that a matrix has. By convention, rows are listed first; and columns, second.
Answer: boo i scareed you
Step-by-step explanation:
another object has a density of 18 kg/m3 and a mass of 360kg what is the volume of the object
Answers
Answer:
Length(L)=18kg
=18×100cm=1800
Breadth(B)=360kg
Height(H)=m3
Volume (V)=?
We know,
V=l×b×h
or, V=18×360×m3
=6480
Step-by-step explanation:
I think it is usefulWhich of the following are costs of new car purchases
1) sales tax
Purchase price
Extended warranty
Registration fees
All the above
Answers
Answer:
All of the above is the answer
What is the value of x that would prove the quadrilateral is a parallelogram?
A. 1
B. 2
C. 3
D. 4
E. 5
Answers
If we substitute 3 into the x values in each equation we can see that the top and bottom is the same value and both sides are also the same value, meaning that it is a parallelogram;
Top and bottom of parallelogram:
2x + 3
2 (3) + 3
= 6 + 3
= 9
And
x + 6
(3) + 6
= 9
And then the two sides;
6x - 5
6 (3) - 5
= 18 - 5
= 13
And
4x + 1
4 (3) + 1
= 12 + 1
= 13
There are two pairs of equal sides which shows that this is a parallelogram.
The base of a prism has an area of 6.6 cm2. The height is 2.4 cm. What is the volume
Answers
So the volume is 15.84 cm The formula for the volume of a prism is given by the product of the area of the base and height of the prism. Thus, the volume of a prism can be given as V = B × H where V is the volume, B base area, and H height of the prism.
i need help on this 6th grade math problem
Answers
Answer: x<17.5
Step-by-step explanation:
Subtract from both sides: x+2.5-2.5<20-2.5
Simplify the arithmetic: x<20-2.5
Simplify the arithmetic: x<17.5
Hope it helps!
Answer: B) 12.5
Step-by-step explanation:
Start by isolating x by subtracting 2.5 from both sides
[tex]x+2.5 < 20\\x+2.5-2.5 < 20-2.5\\x < 17.5[/tex]
This reads as "x is less than 17.5"
D can be eliminated because it is greater than 17.5
C can be eliminated because 17.5 can't be less than itself
So the answer must be B since it is less than 17.5 and greater than A
What is the vertex of the absolute value function below? (4, –1) (1, –4) (1, 4) (4, 1)
Answers
Answer:
(4,1)
Step-by-step explanation:
D on edge
the highest point
Factor the expression using the GCF 16x - 36
Answers
Answer:
4(4x−9)
Step-by-step explanation:
suppose you have a box with 3 blue marbles, 2 red marbles, and 4 yellow parmbles. you are going to pull out one marble, record its color, remove it from the box and draw another marble. what is the probability of pulling out a red marble followed by a blue marble? the multiplication rule says to use P(red) P(blue).
1. Describe the probability of finding a red marble.
2. describe the probability of finding a blue marble.
3. describe the process of finding the probability of finding a red marble followed by a blue marble if the first marble was permanently removed?
4. what effect did removing the first marble from the box have on the problem
5. describe the probability of finding a red marble followed by the blue marble if the first marble is removed?
Answers
Answer:
Step-by-step explanation:
Part A
The probability of finding a red marble. P(red) = red / total
Total = red + yellow + blue
Total = 2 + 4 + 3
Total = 9
P(red) = 2/9 = 0.22222
Part B
P(blue) = blue / total
P(blue) = 3/8 = 0.375
This means that the red marble is permanently gone. The total is different. It is eight not nine.
Part C
The probability of red followed by blue is just the answers to A and B multiplied.
P(red) followed by blue = 2/9 * 3/8
P(red) followed by blue = 0.22222 * 3.75
P(red) followed by blue = 0.0833333
If you are confident of your concellation abilities you could do this as
P(red followed by blue) = 2/9 * 3/8 = 1/3 *1/4 = 1/12 = 0.083333....
Part D
Removing the first marble had the affect of reducing the total number of marbles to 8 and the number of reds from 2 downto 1
Part E
The answer here is 1/12.