complete the solution of the equation. find the value of y when x equals 4 -3x +9y = -57

Answer:

2

Step-by-step explanation:Quadrant I and Quadrant IV

Two out of the four Quadrant planes have a positive x- value.

The coordinate axis split the plane into four parts called Quadrants or which can also be called Cartesian quadrants. These divided parts of the plane are numbered I, II, III, and IV.

The first quadrant/ quadrant I which lies on the upper axis on the right side of the plane has two positive quadrants, that is one positive x and one positive y because both of them lie in the positive direction of the axis.

The second quadrant/ quadrant II which appears on the upper right side of the plane has one positive and one negative coordinate that is, one positive y and one negative x because the x coordinate lie in the opposite direction of the sign of the numbers.

In quadrant III which lies in the downward direction and the left side of the plane has two negative coordinates both x and y. both the coordinates go towards the opposite direction of the sign convention.

in the last quadrant/ quadrant IV have a positive x- coordinate and one negative y-coordinate. Because the y coordinate goes against the positive sign convention.

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Answer:

Step-by-step explanation:

255/30= 8.5

85x8.5= 722.5

it will cost $722.5 for 85 students to watch the play

Answer:

5h

Step-by-step explanation:

there isnt any out numbers so the answer is just 5h.

Answer:

a=-1

Step-by-step explanation:

First step, simplify both sides.

5a=−(1−4a)

5a=4a+−1

5a=4a−1

Next step, subtract 4a from both sides.

5a−4a=4a−1−4a

a=−1

Answer:

35 - 5a = - (1 - 4a)

remove bracket, change signs as needed

35 - 5a = -1 + 4a

bring variables to one side

35 - 5a + 5a = -1 + 4a + 5a

simplify if needed

35 = -1 + 9a

bring numerical values to the opposite side

35 + 1 = -1 +1 + 9a

simplify if needed

36 = 9a

divide to isolate variable 'a'

36 = 9a

9       9

4 = a

therefore 'a' equals 4

Answer:

Repeating

Repeating

Non-Repeating

repeating

Step-by-step explanation:

Answer:

$1.25

Step-by-step explanation:

To do this problem, you need to note that they bought two of almost everything. You are also working backwards at first to get how much they spent total and then taking away the expenses.

The first step is finding how much money they spent total, and you can do this by adding the gift certificate to the price:

44.5 + 10 = $55.50

Now, you see that they each bought a ticket for $20 EACH. There were two tickets (one for Andy, one for Nick). So multiply 20 by 2 and subtract that from your total cost.

$55.50 - (2 * $20) =

$55.50 - $40 =

$15.5

They bought a total of TWO sandwiches at 6.50 each. So repeat these steps, subtracting from the number above (underlined)

$15.50 - ($6.50 * 2) =

$15.50 - $13 =

$2.5

They bought two drinks that totaled to be $2.50.

To find the cost of ONE drink, divide this number by 2:
$2.50/2 =

$1.25

Answer:

A drink costs $1.5 at the amusement park

Step-by-step explanation:

44.50 + 10 = 54.5

2 people         1 ticket = $20             1 sandwich = $6.5

20 × 2 = 40

6.5 × 2 = 13

40 + 13 = 53

54.5 - 53 =  1.5

Answer:

The Given Value X= 14 is not the solution to the equation 23 = x  -  9

Step-by-step explanation:

Very simple Actually 14 - 9 does not equal to 23.

Actually 14 - 9 is equal to 5.

As a result The given value is not the solution.

Hope this Helps!

Answer:

10.5

Step-by-step explanation:

cross multiply 3/8 and x/28

we get 8x=84

1: 10.5

2: The same shape but not the same size.

3: false

4: 3

5: 2/5

Hope this helped also lmk if you want me to explain it.

Answer:

4

Step-by-step explanation:

The cube root of 64 is the number which when multiplied by itself three times gives the product as 64. Since 64 can be expressed as 2 × 2 × 2 × 2 × 2 × 2. Therefore, the cube root of 64 = ∛(2 × 2 × 2 × 2 × 2 × 2) = 4.

The cube root of 64 is 4.

Before solving the question, let's understand the concept of cube root.

The cube root of a number is the value obtained by multiplying it by itself three times or thrice. When we multiply 3 by itself three times, we get 3 x 3 x 3 = 27 = 3³, so the cube root of 27 is 3. Thus, we can say that the cube root gives a value that is basically cubed.

The cube root is denoted by ∛

Now, we will find the cube root of 64.

Firstly, we have to find factor 64.

64 = 2 × 2 × 2 × 2 × 2 × 2.

64 = ∛4³

64 = 4

Therefore, the cube root of 64 is 4.

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Answer:

\(x=\frac{1}{r} +1\)

Step-by-step explanation:

\(r=\frac{1}{x-1}\)
\(r(x-1)=1\)
\(x-1=\frac{1}{r}\)
\(x=\frac{1}{r} +1\)

Answer:

\(x=\dfrac{1+r}{r}\)

Step-by-step explanation:

Given equation:

\(r=\dfrac{1}{(x-1)}\)

Multiply both sides by (x - 1):

\(\implies r(x-1)=\dfrac{1}{(x-1)} \cdot (x-1)\)

\(\implies r(x-1)=1\)

Expand the brackets:

\(\implies rx-r=1\)

Add r to both sides:

\(\implies rx-r+r=1+r\)

\(\implies rx=1+r\)

Divide both sides by r:

\(\implies \dfrac{rx}{r}=\dfrac{1+r}{r}\)

\(\implies x=\dfrac{1+r}{r}\)

Answer:

A, C

Step-by-step explanation:

If it is inversely proportional then y = k/x

Let's try one by one for the options. (im replacing y and x in the equation and finding k to see if k is the same all throughout)

A.

6 = k/1 (k=6)

3 = k/2 (k=6)

2 = k/3 (k=6)

1.5 = k/4 (k=6)

Yes! It's the same everywhere so this is correct!

B.

7.5 = k/2 (k=15)

5 = k/3 (k=15)

3 = k/5 (k=15)

2 = k/7 (k=14)

For the last one k is not the same so nope. It is wrong.

C.

24 = k/1 (k=24)

8 = k/3 (k=24)

k = 6×4 = 24

k = 24×1 = 24

This is correct too.

D.

k = 0.1×200 = 20

k = 0.3×40 = 12

k = 0.8 × 25 = 20

We can already see that k is not the same everywhere.

Only A and C, x and y are inversely proportional for all of the values

Answer: c

Step-by-step explanation:

  Answer:          83 over 41

Step-by-step explanation:

Answer:

-3

Step-by-step explanation:

\(\frac{\sqrt[3]{81} }{\sqrt[3]{-3}}\\\)

the index of both the numerator and denominator are "3", so they cancel each other out:

\(\frac{\sqrt{81} }{\sqrt{-3}} \\=\frac{9}{-3}\\ =-3\)

Hope this helps! :)

Answer:

-3

Step-by-step explanation:

Answer:

Oh my this is so hard

Step-by-step explanation:

Answer:

Step-by-step explanation:

7/9

Taub can drink 7/9 glasses in 1/10 of an hr, you want to know how much she can drink in 1 hr

multiply 7/9 by 10 = 70/9

the number line will be:

7/9 14/9 21/9 28/9 35/9 42/9 49/9 56/9 63/9 70/9

1/10 2/10 3/10 4/10 5/10 6/10   7/10   8/10   9/10   10/10

Step-by-step explanation:

We can set up a ratio

\( \frac{7}{9} = \frac{x}{12} \)

Next we cross multiply

\(9x = 84\)

\(x = 9 \frac{1}{3} \)

So he drinks 9 1/3 ounces of water in 1/10. To go from 1/10 to 10/10, you multiply by 10. So we will do that to the ounces.

\(9 \frac{1}{3} \times 10 = 93 \frac{1}{3} \)

Lastly we divide by 12

\(93 \frac{1}{3} \div 12 = 7 \frac{7}{9} \)

I'm not sure how you are suppose to answer it, but here are the options

\(7 \frac{7}{9} = mixed\)

\( \frac{70}{9} = fraction\)

\(7.77 = whole \: number\)

Answer:

5324

Step-by-step explanation:

volume of cylinder=πr^2l=22/7×11^2×14=5324

Answer:

<

Step-by-step explanation:

the exponent will tell you how many places u need to move the decimal. 5.7 × 10 to the 2nd power = 570. u moved the decimal 2 places to the right.

THIS MIGHT NOT BE WHAT YOU ARE LOOKING FOR AND MIGHT NOT BE CORRECT! READ FIRST!

The answer is A. The slope of the line is rise/run = 4/2 = 2.1. This means that each kilometer costs $2.10. The y-intercept is 2.1, which means that the initial fee is $2.10. So the correct statement is: The slope is 2.1. This means that each kilometer costs $2.10.

The other statements are incorrect. The slope is not 5, so each kilometer does not cost $5. The y-intercept is not 5, so the ride does not last 5 kilometers. The y-intercept is the value of the function when the input is 0, which in this case is the initial fee of $2.10.

The third answer.

3.14*\(2.75^{2}\)*2

The expression  3x²+x+5 is the sum of 3 terms and coefficients are 3 and 1 therefore, Neither Joanna nor Linne is correct.

An algebraic expression is consists of variables, numbers with various mathematical operations,

The given expression is,

3x²+x+5.

According to Joanna, the entire expression is the sum of 4 terms.

and according to Linne the coefficients are 3 and 0.

Since, The expression is the sum of 3 terms:

Square power of x, x and a constant 5.

Also, the coefficient of x² is 3 and coefficient of x is 1.

Therefore, the Joanna and Lienna both are wrong.

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#SPJ2

Answer:

c

Step-by-step explanation:

Answer:C is the correct answer

Answer:

c

Step-by-step explanation:

Step-by-step explanation:

The difference beteen 9.2 ounces and 8.1 ounces is  1.1 ounces

   and the difference in price is   .49

       so 1.1 ounces cost .49

           $ .49 / 1.1 oz = $  .445  per ounce

Then Reid's bowl should cost   7.8 oz  * $ .445 / oz = $3.47

Answer:

37.5

Step-by-step explanation:

cosФ = \(\frac{A}{H}\)

cos(33°35') = \(\frac{m}{45}\)

m = 45 × cos(33°35')

m = 37.5 (1d.p.)

Answer:

Step-by-step explanation:

it doesn't really say what the "face" is, but i'll guess that it's the part marked in yellow?  if that's the case then it's just  10 * 10  twice for each of the squares.  Really you couldn't see that?  :/      200 is the answer

Answer:

Work done is the product of distance and force, it is measured in joules.

Power is the rate of work done given by dividing the work done by time

Power (watts)= workdone (J)/ time (s)

                     = 50,000J/7 sec

                     = 7142.857 watts

Therefore, the power of the car during the race was 7142.857 watts

Step-by-step explanation: