7=6x-11, -2x-3y=-7
What's the answer?

Answers

Answer 1
Solve x for the first equation and then solve the second equation.

7=6x-11 ---> add 11 to each side
7+11=6x-11+11
18=6x ---> divide by 6
3=x

-2x-3y=-7 ---> substitute 3 for x
-2(3)-3y=-7 ---> multiply -2 and 3
-6-3y=-7 ---> add 6 to each side
-6-3y+6=-7+6
-3y=-1 ---> divide by -3
y=[tex] \frac{1}{3} [/tex]


Related Questions

A rectangular lawn has an area of 153 square meters and a perimeter of 52 meters what are the dimensions of the lawn

Answers

17 meters by 9 meters (17×9)
Final answer:

The rectangular lawn's dimensions that match the given area (153 square meters) and perimeter (52 meters) are 17 meters in length and 9 meters in width.

Explanation:

This problem is solved using the formulae for the area and the perimeter of a rectangle. The area is given by Area = length x width and the perimeter by Perimeter = 2 x (length + width). Because we know both the area and the perimeter of the rectangle, we have a system of two equations and two unknowns. Given that the area is 153 and the perimeter is 52, we can write the equations as follows: lw = 153 and 2l + 2w = 52.

By solving this system of equations, we find that the dimensions of the rectangle that satisfy these two equations are length = 17 meters and width = 9 meters. Therefore, the lawn's dimensions are 17 meters in length and 9 meters in width.

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simplify 7(2.3x10^11) and write in scientific
notation

Answers

The simplified version:

1.61*10^12

Sorry, but I have no idea what scientific notation is...
The answer: 1.4* 10^12
________________________
Explanation:
_____________________
Note: a * (b * c) = (a * b) * c ;
______________________________
7(2.3* 10^11) = (7) * 2.3 * 10^ 11 = 14.1 * 1^ 11;  or 1.4 * 10^12
___________________________________________________

What is the answer to 12-D=1.43

Answers

Density = 1.43g/cm3cubed
the answer is 10.5 cx

A poll has a percent error of 4%. The poll states 15,000 people will vote for Candidate A in the next election. Which statement describes what the actual number of people voting for Candidate A could be?

A. The actual number of people is either 9,000 or 21,000.
B. The actual number of people is either 14,400 or 15,600.
C. The actual number of people is either 14,423 or 15,625.
D. The actual number of people is either 14,940 or 15,060.

Answers

it should be c im pretty sure
i believe your answer will the B

what is 684/12 btw the slash represents divison

Answers

The Answer to this Is 57
684 / 12 = 57.

I recommend using a calculator next time ;).

Write 5 5/9 as a improper fraction

Answers

5 5/9
5 * 5/9
25/9
The correct answer is 25/9, as shown above.

What percent of 60 is 15?
Show Work




What number is 15% of 60?
Show Work



What percent of 50 is 18?
Show Work



12 is 90% of what number ?

Answers

well the first one you have to divide both sides by 60 to get x. 
=60x/60=1500/60 
x=25
your answer is 25%

second one...think of it as 18/50. multiply by 2 and you get 36/100 
your answer is 36%

what is the probability of drawing a penny without looking?

Answers

1/4 because a penny is one of 4 coins , do you have a problem to go along with it ?

cynthia's favorite clothing store is having a 30% off sale.what fraction represents 30%

Answers

3/10 or 30/100. percentages are out of 100 so you do the 30 percent out of the 100 percent and simplify if needed.

if a fish swims 7/8 of the depth of 32 foot deep lake, how many feet down did the fish swim?

Answers

8 (the denominator) multiplied by 4 is 32 (how deep the lake is) 7 (the numerator) multiplied by 4 is 28. So the fish swam 28 feet down in the lake.

The fish swam 28 feet down in the 32-foot deep lake.

To find out how many feet down the fish swam, we can multiply the depth of the lake by the fraction representing the proportion it swam.

The depth of the lake is given as 32 feet, and the fish swam 7/8 of this depth.

Multiplying 32 by 7/8:

32 * (7/8) = 224/8 = 28

Therefore, the fish swam 28 feet down in the 32-foot deep lake.

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A bicycle cost $ 129.50. You pay $7.77 in sales tax. What is the tax rate?

Answers

7.77/129.5 = 0.06
Therefore the tax rate is 6%

a certin shade of green paint is made from 5 parts yellow mixed with three parts blue. if 2 cans of yellow are used, how many cans of blue should be used?

Answers

__Brainliest if helped!

5 Parts Yellow with 3 Parts blue
5Yellow with 3 Blue
1Yellow would be  with 3/5 Blue
Hence , 
2 Yellow = (3/5)*2 Blue =6/5 Cans of blue  or 1.2Cans of blue. 

subtract the product of 3 and 4 from 36. then divide the quotient of 9 and 3, subtracted from fifteen

Answers

The first one is 24, and the second one is 12
when it says subtract the product of 3 and 4 it is basically saying subtract 3x4 from 36 so 3x4=12    36-12=24 so yes 24 is the first one 

and the second one says divide the quotient of 9 and 3 subtracted from fifteen
that just means divide 9 by 3 which which is 3 and subtract from 15 which is 12 and divide that by 3 which is 4 so the second one is 4  

Use conversion factors to convert . Write the factor you used . 5 quarts to cups

Answers

A quart is 4 cups. 5(4)=20 cups in a pint

I hope I helped :)
Final answer:

To convert 5 quarts to cups, multiply 5 by the conversion factor of 4 cups per quart, resulting in 20 cups.

Explanation:

To convert from quarts to cups, you need to use a conversion factor. The conversion factor for converting quarts to cups is 1 quart = 4 cups. Therefore, to convert 5 quarts to cups, you need to multiply the number of quarts by the conversion factor.

The calculation is as follows:

Start with the number of quarts you have, which is 5.Multiply 5 quarts by 4 cups/quart (since there are 4 cups in a quart).The calculation will be 5 × 4 = 20.

Therefore, 5 quarts is equal to 20 cups.

mr. Scruggs got some money for his birthday he spent one fifth of it on dog treats that he divided the remainder equally among his three favorite charities

Answers

he got $225 for his birthday
he spent $45 on dog treats 
he gave $60 to each charities 

c − 3.5 ≤ 3.5 plz help me

Answers

In a problem such as this we want to isolate our variable 'C' on one side of the equation by either adding/subtracting a constant to both sides or dividing by a coefficient. In this case, since we have C - 3.5 on one side, we can add 3.5 to both sides to leave 'C' by itself since C + 0 = C.

After doing so, we have C ≤ 3.5 + 3.5 = 7, so C ≤ 7

If two sides of an isosceles triangle each measure 1/4 inch and the third side measures 3/8 inch what is the perimeter of the triangle

Answers

0.875 inches is the correct answer.
its perimeter would equal 7/8 inch (1/4+1/4=2/4=4/8+3/8=7/8)

colton's recipe makes 2 dozen brownies. his recipe calls for 7/8 cup of vegetable oil. how much oil will colton need to make 6 dozen brownies?

Answers

2 x 7/8 = 2.625
the answer is 2 5/8

Final answer:

Colton will need 2 5/8 cups of vegetable oil to make 6 dozen brownies. This is calculated by tripling the original required amount of 7/8 cup of oil needed for 2 dozen brownies.

Explanation:

Colton's recipe for brownies specifies that 7/8 cup of vegetable oil is needed to make 2 dozen brownies. To find out how much oil is required for 6 dozen brownies, we need to calculate the amount of oil for triple the original quantity since 6 dozen is three times 2 dozen. First, we set up a proportion where 2 dozen corresponds to 7/8 cup of oil.

Mathematically, we can find the amount of oil needed for 6 dozen by multiplying the amount of oil for 2 dozen by 3 (since 6 is three times larger than 2):

Multiply 7/8 cup by 3.

7/8 × 3 = 21/8 cups.

Convert 21/8 cups to a mixed number to get 2 5/8 cups.

Therefore, Colton will need 2 5/8 cups of vegetable oil to make 6 dozen brownies.

A vase can hold 7 flowers. If a florist had 67 flowers she wanted to put equally into vases, how many flowers would be in the last vase that isn't full.

Answers

9 vases and 4 extra flowers
4 flowers would be in the last vase

show one way to count from 82 to 512

Answers

You can count by 2's/ 4's/ or perhaps evens 6's, it'd be most efficient counting by evens lower than 10. 
Final answer:

To count from 82 to 512, you can do so by adding 10 to each preceding number starting from 82 until you reach 512.

Explanation:

One way to count from 82 to 512 is to count by multiples of 10, which are also known as 'tens'. Begin by starting at the number 82 and adding 10 to get 92. Then, continue adding 10 to each resulting number. Continue this process until you reach the number 512. So, the sequence would look like this: 82, 92, 102, 112... until you eventually reach 512.

Note: This is just one simple method. Depending on the circumstances, you might want to count by other numbers. For instance, you could count by 20's or 50's. Each will yield a different number of steps, and some might be more efficient than others depending on the context.

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A ramp used to remove furniture from a moving truck has a slope of 2/5.
The height of the ramp is 4 feet. How far does the base of the ramp extend from the end of the truck?

Answers

Remember that slope is change in y (height) over change in x (horizontal distance). We set up a proportion to find the horizontal distance from the base of the ramp to the end of the truck.

[tex]slope= \frac{ChangeInHeight}{ChangeInHorizontalDistance} = \frac{2}{5}= \frac{4feet}{x} \\ \frac{2}{5} = \frac{4feet}{x} \\ 2x = 20feet \\ x = 10feet [/tex]

If a 4-pound roast takes 150 minutes to cook, how long should a five-pound roast take

Answers

First divide 150 with 4
150/4 = 37.5 
Then you have to multiply 37.5 with 5
37.5 * 5 = 187.5
So it will take 187.5 to roast!!
Hope This Helps!!

To roast a five-pound roast takes 187 minutes and 30 seconds at the same rate.

What are the ratio and proportion?

The ratio is the division of the two numbers.

For example, a/b, where a will be the numerator and b will be the denominator.

Proportion is the relation of a variable with another. It could be direct or inverse.

Given that,

A 4-pound roast takes 150 minutes

So,

4-pound ⇔ 150 minutes

Divide by 4 on each side,

1-pound ⇔ 150/4 minutes

Multiply by 5

5-pound ⇔ (150×5)/4 minutes

5-pound ⇔ 187.5 minutes

5-pound ⇔ 187 minutes and 30 seconds.

Hence "To roast a five-pound roast takes 187 minutes and 30 seconds at the same rate".

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the insect exhibit at the museum has 8 display cases with 417 insects in each case. write and solve an equation tov show how many insects are displayed at the museum.

Answers

8 cases x 417 insects = 3,336 insects
417 times 8 would be the way to do this problem... Hope That Helps : )

write the word sentence as an equation.
The quotient of two times a number k and -2.6 is 12\

Answers

2k/-2.6=12 is the word sentences as an equation

The word sentence 'The quotient of two times a number k and -2.6 is 12' translates to the equation (2 × k) / -2.6 = 12. Solving for k gives k = -15.6.

The sentence describes 'the quotient of two times a number k and -2.6 is 12'. Quotient refers to the result of division. Therefore, the equation that represents this sentence is:

(2 × k) / -2.6 = 12

To find the value of k, you would multiply both sides by -2.6 and then divide by 2:

-2.6 × 12 = 2 × k => -31.2 = 2 × k

k = -31.2 / 2 => -15.6

Brian bought a pair of jeans that was on sale for one third of its original price. Including the 3.76 sales tax, he paid $29.17. What was the original price of the jeans?

Answers

I believe it would be $87.51 not positive though.

A theater company charges $4.50 per ticket for people of all ages. If c represents the total number of children who bought tickets and represents the total number of adults who bought tickets, which expression best represents the total money earned by the company from the sale of tickets?

Answers

4.50c(a)= total 
hope that helps

The result of subtracting 2 from its opposite is _____.

0
1
4
-4

Answers

Answer: it's four

Step-by-step explanation:

Answer:

its -4

Step-by-step explanation:

how do you write 70% as a fraction in simplest form ?

Answers

70% equals to 70/100 in fraction form.
But, you need to write it in simplest form. so, divide both of them from 10 'cause they both can divide completely by it.
70/100 = 7/10
so, your answer is 7/10

To convert 70% to a fraction, write it as 70/100 and simplify by dividing both the numerator and the denominator by 10 to get 7/10.

To convert 70% to a fraction in simplest form, you first write it as a fraction with a denominator of 100, which would be 70/100. Then, to simplify the fraction, you find the greatest common divisor (GCD) that 70 and 100 have in common. Both numbers are divisible by 10, so when you divide both the numerator and the denominator by 10, you get 7/10. In this simplest form, the numerator is 7 and the denominator is 10, which is the fraction equivalent of 70%.

A bowl contains 15 granola bars and 10 fruit bars.

What is the ratio of granola bars to fruit bars?

Enter your answer in simplest fractional form in the box

Answers

The answer would be 15:10

So in it's simplest form the answer would be 3:2 because you would divide each side by 5

Hope this helps :)

Answer

Find out the what is the ratio of granola bars to fruit bars .

To prove

As given

A bowl contains 15 granola bars and 10 fruit bars.

The ratio of the granola bars to fruit bars is written as .

[tex]\frac{Number\ of\ granola\ bars}{Number\ of\ fruits\ bars} = \frac{15}{10}[/tex]

Simplify the above

[tex]\frac{Number\ of\ granola\ bars}{Number\ of\ fruits\ bars} = \frac{3}{2}[/tex]

Therefore

[tex]the\ ratio\ of\ the\ granola\ bars\ to\ fruit\ bars\ be\ \frac{3}{2} .[/tex]


   

A paddle boat rents for $10 plus $8 per hour. How much does it cost to rent a paddle boat for h hours?

Answers

8h + 10 or 10 + 8h

Hope this helps :)
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