Answers
Answer:
Elimination method
Step-by-step explanation:
We have a choice to eliminate the y or x:
I chose x
So now we double the second equation to make the co efficient of x the same:
6x-5y = -3
6x+4y = 24
Now we subtract both equations to eliminate the x's:
6x-5y = -3
- - -
6x+4y = 24
-9y = -27
y = 3
Now we substitute this value into either equation 1 or 2:
I chose 2
3x + 2(3) =12
Simplify:
3x + 6 =12
Subtract 6 from both sides:
3x + 6 -6 = 12 -6
Simplify:
3x = 6
Divide both sides by 3:
3x÷3 = 6÷3
Simplify:
x = 2
Answer:
(2, 3 ) by the elimination method
Step-by-step explanation:
6x - 5y = - 3 → (1)
3x + 2y = 12 → (2)
multiplying (2) by - 2 and adding to (1) will eliminate x
- 6x - 4y = - 24 → (3)
add (1) and (3) term by term to eliminate x
0 - 9y = - 27
- 9y = - 27 ( divide both sides by - 9 )
y = 3
substitute y = 3 into either of the 2 equations and solve for x
substituting into (2)
3x + 2(3) = 12
3x + 6 = 12 ( subtract 6 from both sides )
3x = 6 ( divide both sides by 3 )
x = 2
solution is (2, 3 )
Related Questions
HELP HELP HELP HELP HELP HELP
Answers
Step-by-step explanation: i cant see it clearly
Can someone help the picture below asap
Answers
Do you know what 1/5 is as a percentage
6 The bar chart shows the A-level mathematics grades achieved by some students one year. A-level grades 120 100- 80 Frequency 60 40 20 om 0 A* A B D E U С Grade a How many students achieved grade B or C? b How many students took A-level mathematics? c Estimate the probability that a student will achieve grade B or C next year.
Answers
Answer:
very hard very hard
Step-by-step explanation:
other will answer it
How many solutions does the system have
Answers
Answer:
There are infinate solutions.
Step-by-step explanation:
Plug (3x-8) in for y
5(3x-8)=15x-40
Simplify
15x-40=15x-40
Explanation:
If we multiply both sides of the second equation by 5, then we go from y = 3x-8 to 5y = 15x-40. This is exactly identical to the first equation of the system.
Therefore, the two equations are equivalent just in slightly different forms. The two equations graph the same line which leads to infinitely many solutions.
The solutions are of the form (x, 3x-8) where x is any real number.
Since there are infinitely many solutions, we consider this system to be dependent.
Help !! Write the following equation in standard form:
8/7x3+x4+6x+1
Answers
A car travels 180km from Mool River along the N3 highway to the South Coast. It takes the driver 4 hours, Determine the average speed of the car in km per hour.
Answers
Answer:
45km/h
Step-by-step explanation:
The car took 4 hours to travel 180km -> In an hour, it travel 1/4 of the distance.
1/4 x 180 = 45
So, the average speed of the car is 45km/h.
The temperature at sunrise is 35°F. Each hour, the temperature rises 7°F. Write an equation that models the temperature y, in degrees Fahrenheit, after x hours.
What is the graph of the equation?
Answers
Answer:
35 + 7x = y
Step-by-step explanation:
The temp starts at 35 and increases by 7 degrees every hour.
Have a great day!
Please rate and mark brainliest!
5.)Linear associations form a straight line on a graph. Nonlinear associations produce a curved line or other pattern that is not a straight line.
Other associations are positive, negative, and no association. Describe each of these three associations and provide a real world example of each type of association.
Answers
Answer:
See below.
Step-by-step explanation:
Positive association is when the line has a positive slope, and the line progresses upwards.
E.g. When a car is traveling, as time progresses, the distance traveled increases.
Negative association is when the line has a negative slope, and the line declines.
E.g. When a car is traveling, as time progresses, the amount of gasoline decreases.
No association is when there is no slope between points, nor is there a line.
-hope it helps
In Mrs. Nathan's class, there are 8 boys and 10 girls. What is the ratio of girls to boys in Mrs. Nathan's class? A. 5:4 B. 1:8 C. 8:1
Answers
Answer:
A. 5:4
Step-by-step explanation:
There are 10 girls and 8 boys, so the ratio of girls to boys would be 10:8. BUT we are going to simplify it. 10 and 8 both can be divided by 2, so we get a ratio of 5:4.
Answer:
[A] 5:4
Step-by-step explanation:
There are 8 boys and 10 girls.
What is the ratio of girls to boys in Mrs. Nathan's class?
10:8 is the ratio
As you can see that not a answer choice.
That cause you have to simplify.
Find the GCF. [2]
Hence, 10:8 both divide by 2
= 5:4
Thus, Answer = [A] 5:4
[RevyBreeze]
The school has arranged to have the gym walls plastered. It takes 200 pounds of lime to make one batch of plaster. Each batch of plaster will cover 45 square yards of wall. How much lime will be needed to finish 855 square yards of wall? 21,375 pounds 3,762 pounds 38,475 pounds 3,800 pounds
Answers
Answer:
D or 3800
Step-by-step explanation:
Just divided 855 by 45 then multiplied 200 by 19
Please mark me brainlest
3.6x+5.9−2.2−1.7x
Enter your answer as an expression
Answers
Answer:
1.9x+3.7
Step-by-step explanation:
Combine like terms
3.6x + (-1.7x)= 1.9x
5.9 - 2.2= 3.7
Hence, 1.9x + 3.7.
[RevyBreeze]
Answer:
1.9x+3.7
Step-by-step explanation:
start by combining like terms
(3.6x-1.7x)+(5.9-2.2)
1.9x+3.7
Factorise : 81 − (a−2)^2
Answers
Answer:
(11 - a)(7 + a)
Step-by-step explanation:
81 - (a - 2)² ← is a difference of squares and factorises in general as
a² - b² = (a - b)(a + b) , then
81 - (a - 2)²
= 9² - (a - 2)²
= (9 - (a - 2) )(9 + (a - 2) )
= (9 - a + 2)(9 + a - 2)
= (11 - a)(7 + a)
0.62 lowest form
Pls answer! I will mark u as BRAINLIEST ANSWER
Answers
Answer:
31/50 is the lowest form of 0.62
31/50 =0.62
Why did the British sign the Treaty of Paris? What did Great Britain agree to do under the treaty?
Answers
Answer: They signed it to end the Revolutionary War. They promised to recognise American independence and ceded territory east of the Mississippi River to the U.S
Step-by-step explanation:
Which equations have the variable term in the equation -6 + 2x = 6x - 9 Isolated to one side of the =, and the constant isolated to the other side? Select all that apply.
Answers
Answer:
See explanation.
Step-by-step explanation:
Since no choices were given I'll do my best to provide equivalent options.
Let's say all the terms with x in them were moved to the left side of the equation, and the rest were moved to the right.
-6+2x = 6x-9
2x-6x = -9+6
Simplifying these gives:
-4x = -3
4x = 3
Based on your question you should look for functions arranged similarly to
-4x = -3
The options for this question might include:
-4x = -3
4x = 3
2x - 6x = -9 + 6
-6 + 9 = 6x - 2x
3 = 4x
what is the prime factorization for 54???
Answers
[tex]2 * 3 * 3 * 3[/tex]
[tex]3 * 18[/tex]
HELP ME LEJDJSKEJFJXJSJA
Answers
3k+k^2-3
3(4)+(4)^2-3
12+16-3
=25
Hope this helps :)
What is the lowest denominator of 1/2, 1/3, and 1/5?
Answers
Answer:
6 or 1/6
Step-by-step explanation:
Only in this case, you leave out the 5 denominator as a multiple because it has nothing in common with 2 and 3.
2 x 3 = 6 lowest denominator
therefore,
6.
What is the value of the expression 6to the power of 2 + 3to the power of 3 ?
Answers
Answer:
63
Step-by-step explanation:
6² + 3³
= 36 + 27
= 63
Answer:
63. Six times six is thirty six. Three times three times three is twenty seven. Thirty six plus twenty seven is equals to sixty-three
Step-by-step explanation:
=6²+3³
=36+27
=63
Match the side and angle measures of each triangle to its correct classification.
Answers
Step-by-step explanation:
the first one is acute equilateral
the second one is obtuse scalene
the third one is right scalene
the fourth one is obtuse isosceles
Use the rule x + 7 to find the missing number in the table.
X Y
1 8
6 13
8 15
10 17
12
The missing number is
Answers
Step-by-step explanation:
Given:
Rule, x + 7.Table values.The rule is telling us to add 7 to the given value of x.
Add 7 to 12.
[tex]7 + 12 = 19[/tex]
The missing number is 19.
For each value of , determine whether it is a solution to 28=4w.
Answers
[tex][Hello,BrainlyUser][/tex]
Answer:
w = 7
Step-by-step explanation:
Divide both sides of the equation by the same term
[tex]\frac{28}{4}=\frac{4w}{4}[/tex]
Simplify
w = 7
[tex][CloudyBreeze][/tex]
the measure of an angle is 78 degrees. what is the measure of its supplementary angle?
Answers
I hope this helps :D
An angle of 78° is a supplement of another angle. We know that the sum of the supplementary angles is 180° and the sum of complementary angles is 90°. Let's take another angle to be x. Hence, the measure of another angle is 102°.
Answer:
18*
Step-by-step explanation:
When two angles add up to 90°, we say they "Complement" each other.
Complementary comes from Latin completum meaning "completed" ...
because the right angle is thought of as being a complete angle.
Spelling: be careful, it is not "Complimentary Angle" (with an "i") ...
that would be an angle you get for free!
How many 32-bit integers can be stored in a 16-byte cache line?.
Answers
Answer:
4
Step-by-step explanation:
1 byte = 8 bits
=> 16 byte = 16 x 8 = 128 bits
So it can hold 128 : 32 = 4 integers.
The number of 32-bit integers that can be stored in a 16-byte cache line is 4.
What is unit conversion?To convert any unit into another is called a unit conversion.
In order to convert units, we need to care about their dimensions their dimension should not be changed.
It is known that,
1 byte = 8 bits
Multiply both sides by 16
16 byte = 128 bits
32 bits will hold 128/32 = 4 integers.
Hence "A 16-byte cache line can hold a maximum of 4 32-bit integers".
To learn more about unit conversion,
brainly.com/question/11543684
#SPJ2
HELP ASAP
what is the median of the data set 92,63,22,80,63,71,44,35?
63
80
92
35
Answers
Answer: 63
Step-by-step explanation:
trust !
80 POINTS ANSWER QUICKLY (and correctly)
Consider the figure. A student correctly rotates rectangle PQRS 90° counterclockwise about the origin to obtain rectangle P′Q′R′S′. Which statement about rectangle
P′Q′R′S′ is true?
A. P′Q′¯ is parallel to R′S′¯.
B. P′Q′¯ is parallel to Q′R′¯.
C. Q′R′¯ is parallel to PS¯. ′
D. R′S′¯ is parallel to PQ¯.
Answers
Answer:
C
……………………………………………………………
The true statements about rectangle P′Q′R′S′ are,
A. P'Q' is parallel to R'S'.
C. Q′R′ is parallel to P'S'.
What are transformations?Two-dimensional figures can be transformed mathematically in order to travel about a plane or coordinate system.
Dilation: The preimage is scaled up or down to create the image.
Reflection: The picture is a preimage that has been reversed.
Rotation: Around a given point, the preimage is rotated to create the final image.
Translation: The image is translated and moved a fixed amount from the preimage.
We know rotating a planer figure counterclockwise transforms
(x, y) to (-y, x) and the image remains congruent to the preimage.
Given, A quadrilateral PQRS in which PQ is parallel to SR and PS is parallel to QR.
Rotating PQRS 90 degrees counterclockwise P'Q' is parallel to R'S' and
Q′R′ is parallel to P'S'.
learn more about the translation of figures here :
https://brainly.com/question/17592356
#SPj2
Marie was trying to show her friend why -3 × -8 equals a positive product. This is what she wrote:
-3 × 0 = 0
-3 × (?) = 0
-3(8) + -3(-8) = 0
-24 + 24 = 0
What should Marie write in place of the question mark?
Answers
8+8=16
-8 + (-8)= - 16
8+ (-8)=0
-8 + 0 = - 8
have a wonderful day
Hailey lee
Answer -8
Step-by-step explanation:
A taxi charges $4 plus $0. 20 per mile. You spend more than $30 for a taxi ride. What is the inequality?
Answers
Answer:
[tex]4+0.20m > 30[/tex]
Step-by-step explanation:
You add 4 to the 2 cents
Solve the following
Answers
Step-by-step explanation:
derivative:zero becouse ever number has daritive is zero
6:
Hey, can someone help me with this. I am having trouble
