MATHEMATICS MIDDLE SCHOOL

4 is added to x, the result is 29
What is the value of x?
BE

Answers

Answer 1

Answer:

Answer:

x=25

Step-by-step explanation:

Since x is added to 4 to equal 29, the equation will be:

x+4=29

Subtract 4 from both sides

x=25

Answer 2

Answer: So the equation would be: 4+X=29
Reverse it: 29-4=X
Answer: 25=X

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SOLVE BY SUBSTITUTION:3x-2y=14
y=5x
solve by substitution
x-2y=-2
y=2x+4
solve by elimination
x+2y=-7
x-5y=7
PLEASE HELP WORTH 10 POINTS! AKA SHOW WORK:)

Answers

1)
3x-2y=14
y=5x

So we plug in y=5x into 3x-2y=14

We get:

3x-2(5x)=14
3x -10x=14
-7x=14
x=-2

So we found x, now we need to find y. We can simply plug in x into the equation and get y.

y=5x
y=5(-2)
y=-10

So your answer will be (-2,-10).

2)
x-2y= -2
y= 2x+4

Once again plug in y=2x+4 into x-2y=-2

x-2(2x+4) = -2
x-4x-8=-2
-3x-8=-2
-3x = 6
x= -2

Now we plug back in x and solve for y :)

y=2x+4
y=2(-2)+4
y=-4+4
y=0

So our solution would be (-2,0).

3)
x+2y=-7
x-5y=7

Multiply the second equation by -1

-x+5y=-7

Now add that equation with the other one:

x+2y=-7
+
-x+5y=-7
-----------------
7y=-14
y=-2

Now plug in y=-2 and solve for x

x+2y=-7
x+2(-2)=-7
x+(-4)=-7
x-4=-7
x=-3

So your solution would be (-3,-2).

1)

$3x-2y=14\n \n y=5x$

We know y's value. Let's plug it in the equation.

$y=5x\n \n 3x-2\cdot (5x)=14\n \n 3x-10x=14\n \n -7x=14$

Divide both sides by -7.

$x=-2$

Now we have x's value. Let's plug it in the equation to find y.

$x=-2\n \n y=5x\n \n y=5\cdot -2\n \n y=-10$

Solution,

(-2, -10)

2)
$x-2y=-2\n \n y=2x+4$

Again we have y's value. Let's plug and solve.

$y=2x+4\n \n x-2\cdot (2x+4)=-2\n \n x-(2\cdot 2x+2\cdot 4)=-2\n \n x-4x-8=-2\n \n -3x-8=-2\n \n -3x=-2+8\n \n -3x=6\n \n x=\frac { 6 }{ -3 } \n \n x=-2$

Now we have x's value let's solve for y.

$x=-2\n \n y=2x+4\n \n y=2\cdot (-2)+4\n \n y=-4+4\n \n y=0$

Solution,

(-2, 0)

3)

$x+2y=-7\n \n x-5y=7$

Let's first multiply the first equation by -1

$-1\cdot (x+2y)=-1\cdot -7\n \n -x-2y=7$

Then let's add these new equation and the second equation.

$-1\cdot (x+2y)=-1\cdot -7\n \n -x-2y=7\n \n x-5y=7\n \n (-x-2y)+(x-5y)=7+7\n \n -x+x-2y-5y=14\n \n -7y=14\n \n y=\frac { 14 }{ -7 } \n \n y=-2$

Now we have y's value let's plug it and solve for x.

$y=-2\n \n x+2y=-7\n \n x+2\cdot (-2)=-7\n \n x-4=-7\n \n x=-7+4\n \n x=-3$

Solution,

(-3, -2)

Which of the following is a logarithmic function?y = 0.25x
y = x Superscript 0.25
y = log Subscript 0.25 Baseline x
y = (0.25) Superscript x

Answers

y = log Subscript 0.25 Baseline x is the logarithmic function

The following are not the logarithmic function

y = 0.25x
y = x Superscript 0.25
y = (0.25) Superscript x

Learn more: brainly.com/question/4626564?referrer=searchResults

Y= log Subscript 0.25 Baseline c

1. A cafeteria offered two types of milk, regular or chocolate. If they sold 66 cartons total and 18 of them were regular flavor, what is the ration of chocolate milk sold to regular milk sold?2.During a class election 64 students voted for candidate A. If the ratio of votes for candidate A to the vote for candidate B was 8:5, how many votes did candidate B receive?

Answers

Your answer for the first one is 8 : 3
And your answer for the second one is 40
I hoped I helped(:

The formula for the volume of a pyramid is V=1/3Bh. Which of the following equations is equivalent to the given formula?A) B=3V/h

B) B=3h/V

C) B=V-1/3/h

D) B=V+1/3/h

Answers

Answer:

A) B = 3V/h

Step-by-step explanation:

Given: The formula for the volume of a pyramid is V=1/3Bh.

From the above equation, we have to solve for B.

We use inverse operation to find B.

Multiply by reciprocal of 1/3 on both sides. the reciprocal of 1/3 is 3.

So, multiply by 3 on both sides, we get

3V = 3*1/3*B*h

3V = B*h

Now divide both sides by h, we get

3V/h = Bh/h

3V/h = B

Therefore, the answer is A) B = 3V/h

A) B=3V/h

Multiply both sides by 3 to get 3V=Bh. Divide both sides by h, and you get 3V/h=B

Jodi bought some shirts for $6 each Marge bought some shirts for $8 each the girls spent the same amount of money on shirts . What is the least amount they could have spent.