Find 3y+x if 2x-3y=12 and 8x+3y=14

Answer:

D) 27

Step-by-step explanation:

4 + 2 = 6 (pets)

For each pet he spends $4.50, so:

6 × 4.50 =

6 × 4 = 24 +

6 × 0.5 =

6/2 = 3

24 + 3 = 27

So D.

:)

Answer:

D. Mr. Winston spends $27 dollars at the pet store.

Step-by-step explanation:

It's multiplication. He has 6 pets, he spends $4.50 for each pet.

4.50 * 6 = 27.

Mr. Winston spends $27 on pet food for his 6 pets.

Hope this helps!

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Answer:

Might be wrong, but, Stephan bought the bike and helmet for 115.2$

Step-by-step explanation:

(might be wrong)

$307 and 2 cent i think

Answer:

2.5 hours

Step-by-step explanation:

o-O

Answer:

x = 11(13/14)

Step-by-step explanation:

3/5(x – 7/10) = -31/4

open the bracket:

3/5 * x – 7/10 = -31/4

3/5 * –7x/10 = -31/4

3/5 + 31/4 = 7x/10

(12+155)/20 = 7x/10

167/20 = 7x/10

cross multiply:

140x = 1670

x =1670/140

x = 11(130/140)

x = 11(13/14)

The value of x is 1/5.

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given:

3/5 (x − 7/10)= −3 1/4

Now, Solving for x

3/5 ( x- 7/10 )= 13/4

x- 7/10 = -13/4 x 5/3

x- 7/10 = -65 /12

x= -65/12 + 7/10

x= 24/ 120

x= 1/5

hence, the value of x is 1/5.

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Answer:

I say the first graph in the first pic

Also,the 2nd graph in the 2nd pic

Answer:

the first one

Step-by-step explanation:

Answer:

I do not understand that so, sorry!

Step-by-step explanation:

Does not make sense

Answer:1/2 cup of sugar makes 1 dozen cookies

1 cup if sugar makes 4 dozen cookies

Step-by-step explanation:

Answer:

1/2 cup of sugar makes 1 dozen cookies so, 1 cup of sugar makes 4 dozen cookies

Answer 75%=0.75

7%= 7/100

75/10=other

3/4=0.75%

0.07=7/100

7.5=other

Step-by-step explanation: hope that helps :))

Answer:

B / 2nd answer

Step-by-step explanation:

if the orders are correct, then it should be B, but there should also be a picture just in case

The range for the given scenario is y≥0.

Given that, Tina graphed the function on the coordinate grid to show f(x), the height of the dropped ball, in feet, after its xth bounce.

Functions are the fundamental part of the calculus in mathematics. The functions are the special types of relations. A function in math is visualized as a rule, which gives a unique output for every input x.

Part A:

From the graph we can see that, for f(3) that is for 3 bounces the height is 4 feet.

Part B: Tina said that a possible range for the given function is y > 0.

From the graph we can see that for f(7) and f(8), the ball is almost at rest position. So the range can be y≥0.

Therefore, the range for the given scenario is y≥0.

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Dividing 2/3 profit of selling concert tickets by 1/5 profit from selling band mechandise.

(2/3) / (1/5) = 10/3 = 3 1/3

Hence band members make 3 1/3 or 10/3 times more profit from ticket sales than from band merchandise sales.

This can be elaborate in such a way also.  

Let suppose the total profit is $30.

then the profit from the ticket sale = 2/3 of 30 = $20

and the profit from the band merchandise sales = 1/5 of 30 = $6

Now dividing 20 by 6, which gives 10/3. the same answer that were calculated above.

Answer:

Slope Intercept Form : y = mx + b (I learned mx + b, but some schools teach ax + b, so which ever one your teacher taught you)

Ax + By = C : Standard Form

(y - y1) = m (x - x1) : Point-Slope Form

Step-by-step explanation:

Hope this helps!

Answer:

I think its D

Step-by-step explanation:

7x8x9 would equally 504 and 9x8x7 would also equall 504.So therefore your answer if I'm not mistaken would be D.

Answer: The answer to your question is D.

Step-by-step explanation: A Commutative Property for Mutliplication order can change be the change will never affect the answer.

Well, 9:00 AM to 4:00 PM would be 7 hours. 7 hours into minutes would be 420. 420 divided by 20 is 21. This means it multiplies 21 times from 9:00 to 4:00. Since it multiplies by 2, than you need to skip count with the pattern multiply by 2 and stop once you have 21 numbers.

1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536, 131072, 262144, 524288, 1048576. That would be 21 numbers.

The answer would be 1048576.

I think this is correct. :/

Answer:

$17,812.50

Step-by-step explanation:

hope it helps

Answer: 12+16=28

Step-by-step explanation: trust me

since they are all in the same line you only need to use 2 of the points I'm using (1,-1) and (2,1) next you do (x1,y1) and (x2, y2) which would be (1,2) and (-1, 1) then do y2-y1 / x2-x1 which would be 1/2

Answer:

I think its C. It increased by 11 and 3/4 °C.

Step-by-step explanation:

I say that because it increases by 10 (-5 from +5) then to 6 which makes it 11 times. Then, it increases by 3/4 since its 2/4 + 1/4 which gives u 3/4. Also, its an increase and not a decrease because the numbers on the number line is going pass 0, so that shows an increase.

Answer:

$12381.82

Step-by-step explanation:

Answer:

arithmetic (+3)

15, 18, 21

Step-by-step explanation:

Answer:

15,18,21

Step-by-step explanation:

Answer:

No Solution

Step-by-step explanation:

If we solve for the equation, we get a statement that isn't true.

9x + 7 = 9x - 4

-9x        -9x

----------------------

7 = - 4

*subtract 9x from both sides*  

We know that 7 ≠ -4, so there aren't any solutions to this problem.

Hope this helped!

I hope this helps

Well, Good luck from ME!

Answer:

Step-by-step explanation:

mabe ask your teacher nobodys ging to understand that

Answer:

a) 2.6  b) -20   c) -44  d) -1494

Step-by-step explanation:

Terms:

A term is a single mathematical expression. It may be a single number (positive or negative), a single variable ( a letter ), several variables multiplied but never added or subtracted. Some terms contain variables with a number in front of them. The number in front of a term is called a coefficient.

a) 3+1.4+(-7)

3+1.4-7

Calculate.

-2.6

Terms:  3, 1.4, -7

b) 50+3(-10)+ 2(-20)

Multiply.

50-30-40

Calculate.

-20

Terms: 50, 3, -10, 2, -20

c) 4+(-50)+2

4-50+2

Calculate.

-44

Terms: 4, -50, 2

d) (4+(-170)) (5+4))

(4-170)+(5+4)

Add.

(4-170)x9

Calculate.

-166x9

Multiply.

-1494

Terms: 4, -170, 5, 4

Hope this helps :)

Answer:

b

Step-by-step explanation:

Answer:

This should help

Step-by-step explanation:

Answer: 64%

Step-by-step explanation:

The band needs $800 for new uniforms and of that, they only raised $512.

Set up a proportion [tex]\frac{part}{total} = \frac{percentage}{100}[/tex]and plug everything you know in.

[tex]\frac{512}{800}[/tex] = [tex]\frac{x}{100}[/tex]

Solve for x by cross multiplying and dividing.

512 × 100 = 51200

51200 ÷ 800 = 64

x = 64

The school band has raised 64% of their goal already.

Answer:

The Answer would be 64%

Answer:

No

There are infinitely many solutions to the system.

{36x+21y=24312x+7y=81

Multiply the second equation by 3.

3(12x+7y36x+21y=81)=243

Subtract this new equation from the first equation.

36x+21y−(36x+21y0+0=243=243)=0 true

There are infinitely many values of x and y are possible.

One or many equations having the same number of unknowns that can be solved simultaneously called as simultaneous equation. And simultaneous equation is the system of equation.

Given:

Two school groups go to a roller skating rink.

One group pays $243 for 36 admissions and 21 skate rentals.

The other group pays $81 for 12 admissions and 7 skate rentals.

Let x represent the cost of admission and let y represent the cost of a skate rental.

We have a system of equations,

36x + 21y = 243   {equation 1}

12x + 7y = 81        {equation 2}

Simplifying equation 1 we get,

36x + 21y = 243  

Divide by 3,

12x + 7y = 81      

That means, there are infinitely many solutions possible.

Therefore, there are infinitely many solutions possible.

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Step-by-step explanation:

What you are going to do is for each value of x (which is the value to the right on the table) you will find the Y value.

So for X = 0

y = 2(0)+5 = 5

x = 1

y = 2(1)+5 = 7

x = 3

y = 2(3)+5 = 11

x = 5

y = 2(5)+5 = 15

x = 10

y = 2(10)+5 = 25

Now for what you do is place the correspanding value into the graph.

(x,y) = (0,5), (1,7), (3,11),(5,15),(10,25)

Answer: See the graph below.

Step-by-step explanation:

Answer:

5h 15 min

Step-by-step explanation:

70 mph * 4,5 = 315 miles

315 / 60 = 5,25h

5,25h = 5 1/4h = 5h 15 min

Answer:

6.8

Step-by-step explanation:

i hope tis helps