What is the result of multiplying the first equation by −3 and adding to the second equation?

5x−2y=−2

3x+y=12


A: -10x+8y=15
B: 12x+7y=18
C: -12x+7y=18
D: 8x-y=10

Answers

Answer 1

Answer:

The answer is a _10×+8y=15


Related Questions

Solve 6 11/12 - (2 1/4 + 3 2/3). Do the operation in parentheses first. Show all your steps.​

Answers

Answer:

6 11/12 - (2 1/4 + 3 2/3) = 1

Step-by-step explanation:

1. Add: 2 1/4 + 3 2/3 = 5 11/12

2. Subtract: 6 11/12 - 5 11/12 = 1

So, 6 11/12 - (2 1/4 + 3 2/3) = 1

By Solving the given expression 6( 11/12) - (2 (1/4) + 3 (2/3)) the final answer will be 4(1/2).

By using the concept of arithmetic to solve a subtraction problem involving mixed numbers. We'll break down the steps for you, starting with the operation inside the parentheses, and then proceed to find the final result. Let's get started!

To solve 6(11/12) - (2 (1/4) + 3 (2/3)), we need to tackle the operation inside the parentheses first.

First, let's simplify the addition inside the parentheses:

2(1/4) + 3(2/3)

To add these mixed numbers, we need to find a common denominator. In this case, the least common multiple of 4 and 3 is 12. So, we'll convert both fractions to have a denominator of 12.

2(1/4) can be rewritten as

= 2 * 3/12 + 1 * 3/12

= 6/12 + 3/12

= 9/12

3(2/3) can be rewritten as

= 3 * 4/12 + 2 * 4/12

= 12/12 + 8/12

= 20/12

Now, our expression becomes:

6(11/12) - (9/12 + 20/12)

Next, let's add the fractions inside the parentheses:

= 9/12 + 20/12

= 29/12

Now, our expression becomes:

6 (11/12) - 29/12

To subtract the fractions, we again need a common denominator, which is 12 in this case.

6(11/12) can be rewritten as

= 6 * 12/12 + 11/12

= 72/12 + 11/12

= 83/12

Finally, we have:

83/12 - 29/12

Subtracting the fractions, we get 54/12.

Now, we simplify the result to a mixed number:

54/12 is equivalent to 4(6/12), which can be further reduced to 4(1/2).

So, the final answer is 4(1/2).

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Please Help me solve this (Who ever answers correctly will get brainlest)

Answers

Answer: im quite sure it's 4.12

Step-by-step explanation:

im so sure because i got it right <3

Answer:

4.12

Step-by-step explanation:

when adding both cenimeters it'll get you 412 and when you convert it to meters that'll get you 4.12

Leroy bought 6.4 ounces of flour and he used 4.22 ounces of it to make biscuits. How much is left?

Answers

Answer: 2.18

Step-by-step explanation:

you can use subtraction

Answer:

the answer is 2.18oz

Step-by-step explanation:

6.4oz - 4.22oz = 2.18oz

A figure shows a triangle drawn inside a square. The area of the triangle is 40 cm², and the area of the square is 64 cm². A point on the figure is randomly selected, and its location is recorded.

After 150 trials, the randomly selected point was in the triangle 105 times.

How does the experimental probability of a randomly selected point being in the triangle compare to the theoretical probability of the event?

The experimental probability of the event is
Choose...
and the theoretical probability of the event is
Choose...
. Therefore, the experimental probability is
Choose...
the theoretical probability.

Answers

Answer:

1) 70%

2) 62.5

3) GREATER THAN

Step-by-step explanation:

I TOOK THE QUIZ TOO I KNOW ITS RIGHT

The theoretical probability is less likely than the experimental probability.

What is probability?

Probability is a number that expresses the likelihood or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.

The experimental probability of a randomly selected point being in the triangle is found by dividing the number of times the point was in the triangle by the total number of trials. In this case, the experimental probability is:

Experimental probability = Number of times point was in triangle / Total number of trials

Experimental probability = 105 / 150

Experimental probability = 0.7

To find the theoretical probability, we need to divide the area of the triangle by the area of the square, since the point could be selected from anywhere in the square. In this case, the theoretical probability is:

Theoretical probability = Area of triangle / Area of square

Theoretical probability = 40 cm² / 64 cm²

Theoretical probability = 0.625

Comparing the experimental probability and the theoretical probability, we can see that:

Experimental probability = 0.7

Theoretical probability = 0.625

Therefore, the experimental probability is greater than the theoretical probability.

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A bag contains 4 blue coins and 8 red coins. A coin is removed at random and replaced by three of the other color.
Part 1 out of 3:
What is the probability that the removed coin is blue? Enter your answer as a simplified fraction. The probability that the removed coin is blue is ______.

Answers

Answer:

33.3%

Step-by-step explanation:

In total there are 12 coins, those are 4 blue ones and 8 red ones. If we think of these as fractioins we get the following:

[tex]\frac{4}{12}[/tex] * [tex]\frac{100}{1}[/tex] = [tex]\frac{400}{12}[/tex] = 33.3%

The probability that the removed coin is blue is 33.3%.

The awnser if not mistakened is 33.3%

Tiana’s dinner bill is $25.
She tips her server 15%.

How much does Tiana tip the server?

Answers

Answer:

$3.75

Step-by-step explanation:

Change 15% to a decimal by moving the decimal two places left.

15% = 0.15

Multiply

$25 x 0.15 = $3.75

The tip given by Tiana to the server is of $3.75 .

Given, that Tiana's bill is of $25 .

Total bill = $25

Tip to the server = 15%

Convert percent to fractions,

15% ⇒ 15/100

15% ⇒ 0.15

The tip is 15% of the total bill .

So, rewrite in form of equation,

15% of $25

= 0.15 × 25

= $3.75

Thus the tip to the server is of $3.75 .

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can someone explain this to me please

what is 3:5 = 6:__ in its equivalent form

Answers

Answer:

3:5 = 6: 10

Step-by-step explanation:

(3/5) × (2/2) = (3 × 2) / (5 × 2) = 6/10

Equivalent fractions can be written by multiplying or dividing both the numerator and the denominator by the same number. This is the reason why these fractions get reduced to the same number when they are simplified.

Let us understand the two ways in which we can make equivalent fractions:

Multiply the numerator and the denominator by the same number, or,

Divide the numerator and the denominator by the same number.

Hey there! 




3:5 

= 3 × 2 : 5 × 2

= 6 : 10

Therefore, your answer is: 6 : 10


Good luck on your assignment & enjoy your day! 


~Amphitrite1040:)

How many triangles can be formed with segments measuring 4.7 m, 1.6 m, and 2.9 m?

none

one

more than one

Answers

Answer:

  (a)  none

Step-by-step explanation:

You want to know how many triangles can be formed from segments of lengths 1.6 m, 2.9 m, and 4.7 m.

Triangle inequality

The triangle inequality requires the sum of the two shorter segments exceed the length of the longest one.

  1.6 + 2.9 > 4.7

  4.5 > 4.7 . . . . . . . not true — no triangle can be formed

These segments will form no triangles.

<95141404393>

Academic Bowl Team Member # of Medals
Caroline 1
Cooper 5
Josephine 2
Mioko 3
Antonio 4
Jacob 8
Adam 3

1) The table represents the number of medals won by each member of the Academic Bowl Team. What is the ratio of the number of medals won by Josephine to the total number of medals won by the team?
A) 1/13
B) 1/4
C) 1/3
D) 2/5

Answers

Answer:

B = The range is greater than the mean.

Step-by-step explanation:

(っ◔◡◔)っ help me please the right answer will get brainliest 5.0 stars 31 points and thanks lol

Answers

Answer:

Top: d[tex]\leq[/tex]100    Bottom: t<45

Step-by-step explanation:

Top:  d is the distance to the exit door and it is no more than 100

Bottom: You must get under 45 minutes

I need some serious help rn, i got stuck

Answers

Answer:

I think it is add 11 both sides? If it is wrong i am sooooo sorry

Step-by-step explanation:

The first step is to add 3 to both sides then add 11 to both sides then subtract 11 from both sides then divide 3 on both sides I’m pretty sure I’m sorry if I’m wrong

helppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp

Answers

The solution would be 72-9=63 so 72-9=a and a is 63, so 63 is the answer, but im sorry if it doesn’t answer your question

Answer: a - 72 = 9

Step-by-step explanation: Izan's youngest relative is 9 years old. This is 72 years less than his oldest relative (a). The actual way to find the oldest relative's age would be (9 + 72 = a), and that is (a - 72 = 9) backward.

The number of calculators and backpacks that were turned into the school lost and found have been recorded for 10 days in the scatterplot below. Which statement is best supported by the scatter plot?

A. There is a positive linear association between the number of calculators and backpacks.
B. There is a negative linear association between the number of calculators and backpacks.
C. There is a non-linear association between the number of calculators and backpacks.
D. There is no apparent association between the number of calculators and backpacks.

Answers

You need to show the scatter plot

help ill give brainlest pls

Answers

Answer:

A

Step-by-step explanation:

I AM SO SCARED

Answer: C I think

IF HELP MARK ME AS BRAINLLEST

GIVING BRAINLIEST FOR BEST ANSWER!
Write a story that could represent this math problem.

Answers

Answer:

I have zero clue what the hell this is supposed to be

Step-by-step explanation:

Answer:

this is a conundrum  

Step-by-step explanation:

there isn't a math problem there

I need help with this



Q4

Answers

Answer:

19.4

Step-by-step explanation:

23.8-4.4=19.4

A tennis court is divided into rectangular sections. The doubles alleys are the areas on either side of the court used for double games. The rest of the court is the singles court. Each service box is identical in shape and has a perimeter of 69 feet. Find the area and perimeter of the indicated regions. Write your answers as mixed numbers, if necessary

Answers

Answer:27 ft

Step-by-step explanation: hope this helps 3>

I need help with this one

Q6

Answers

Answer:

first answer

x >_ 4.50

nsjsnasiw

Answer:

(the cost of buying salad per pound) is more than or equal to $4.50

[tex]x\geq 4.50[/tex]

.
Find the area of the rectangle with measurements shown; reduce to lowest terms:
Length:2 2/5 feet; Width:1/3 feet
I will delete your answer if it is just for points.

Answers

Answer:

4/5

Step-by-step explanation:

the area of rectangle is length × breadth

length = 2 2/5 breadth = 1/3

2 2/5 × 1/3 = 12/15

reducing to tge lowest term =4/5

Answer:

4/5

explanation:

I hope this helps have a very nice day

evaluate 6 squared - 9 / X when x equals 3

Answers

Answer:

33 if evaluate means solve

It’s 33 I think so if you agree thank you

what is
7 less than the product of 30 and a number r

Answers

Step-by-step explanation:

Take your clues from the question itself.

"5 less than," tells you that you're going to have "minus 5" AFTER something else.

"Product" always means multiplication. "Unknown number" is your variable. (Usually x or n.) So "the product of 7 and an unknown number" means "7 times x." Or just "7x."

And of course, you know what "is equal to 42" means. ;-)

Now put it all together.

I know that my "minus 5" has to go second. And I know that my "is equal to" has to go last. So the "product" part has to go first.

The product of 7 and a number minus 5 is equal to 42.

7x - 5 = 42

I hope that helps!

The British helped Libya gain independence. Which nation had a similar experience?


a
Algeria


b
Belize


c
Korea


d
Vietnam

Answers

Answer: Vietnam

Step-by-step explanation: i got it right

Pls help me with these patterns plssssssssss

Answers

1. (2, 8, 6…) multiply by four, subtract two

2. (8, 13, 10…) add five, subtract three

Answer:

8+5=13 13-3=10 10+5=15  15-3=12 12+5=17

so it is +5 and then -3 and do that over agen.

PLS HELP ME
3.9b + 3.29 <34

Answers

Answer:

B<7.8743589

Step-by-step explanation:

Answer:

b < 3071/390

Step-by-step explanation:

1) Multiply both sides by 100 :      3.9b x 100 + 3.29 x 100 < 34 x 100

2) Refine :      390b + 329 < 3400

3) Subtract 329 from both sides :      390b + 329 - 329 < 3400 - 329

4) Simplify :        390b < 3071

5) Divide both sides by 390 :       390b/390 < 3071/390

6) b < 3071/390

Tia's teacher asked her to find the product of 8 and 207 in her head. Which of the following describes the best way for Tia to mentally calculate the answer?

Answers

Answer:

1656

Step-by-step explanation:

200 = 200 + 7

So,

8 * 207

= 8 * (200 + 7)

= (8*200) + (8*7)

= 1600 + 56

= 1656

=》To do it mentally, Tia has to first seperate 207 as 200 + 7 & multiply 8 with 200 & 7 & then add the products. The answer is 1656.

Hope it helps ⚜

The product of 8 and 207 is 1656. This method allows Tia to simplify the mental calculation by breaking it into smaller, more manageable steps.

The best way for Tia to mentally calculate the product of 8 and 207 is to use the distributive property and break down the multiplication into as:

Recognize that 207 can be broken down as 200 + 7.

Now, calculate the product of 8 and 200 as:

8 × 200 = 1600                        (1)

Calculate the product of 8 and 7 as:

8 × 7 = 56                                 (2)

Add the results from equation (1) and (2),

1600 + 56 = 1656.

So, the product of 8 and 207 is 1656.

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Which equation represents this situation?

Charlie worked 1.5 hours less than Dirk. Together, they worked a total of 25 hours. Dirk worked h hours.

A. h + (h + 1.5) = 25
B. h − 1.5 = 25
C. h + (h − 1.5) = 25
D. h − 2.5 = 25

quickkkk

Answers

C h is dirk. H-1.5 is Charlie. Combined they sum to total 25

Answer:

h+(h-1.5)=25

Step-by-step explanation:

hard to explain but i practice this

Please help quick quick

Answers

Answer:

25x + 15

Step-by-step explanation:

5(5x+3)

5x5=25

5x3=15

25+15

Answer:

25x+15 i think thats right

Step-by-step explanation:

Order each set of numbers from least to greatest.
a. 5, -5, 7, -1, 6

b. -12, -12.4, 12, 12 1/2 , -2, 1/2, 12 1/4, -12.1

Answers

Answer:

-5, -1, 5, 6, 7

−12.4, −12.1, −12, −2, 1/2, 12, 12 1/4, 12 1/2

Step-by-step explanation:

Please help what is the feet?

Answers

The answer is bounce height Y

help ill give brainlest

Answers

answer: hm i dnt do this at my school but, idrk

just switch them around sorry

Step-by-step explanation:

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