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4 years ago

EASY BRAINLEST! ONLY TWO QUESTIONS I NEED HELP ASAP!!

Mathematics

1 answer:

mash [69]4 years ago

6 0

Step-by-step explanation:

When you multiply both sides by a negative value you make the side that is greater have a "bigger" negative number, which actually means it is now less than the other side! This is why you must flip the sign whenever you multiply by a negative number.

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Suppose the man in the St. Ives poem has x wives, each wife has x sacks, each sack has x cats, and each cat has x kits. Write an

marishachu [46]

Answer: $x+x^2+x^3+x^4$

Step-by-step explanation:

As per given,

Number of wives = $x$

Number of sacks = $x (\text{Number of wives} )= x\times x = x^2$

Number of cats = $x(\text{Number of sack})$ $= x \times x^2=x^3$

Number of kits = $x(\text{Number of cats} )=x\times x^3=x^4$

Now , the total number of kits, cats, sacks, and wives going to St. Ives = $x+x^2+x^3+x^4$

Hence, the required ex[pression: $x+x^2+x^3+x^4$

5 0

3 years ago

Original:4<br> New:5<br> State whether the percent of change is an increase or decrease

borishaifa [10]

Answer:

increase

Step-by-step explanation:

percentage increase = new value (5) - original value (4) /original value (4) x 100

5-4 = 1

1/4 = .25

.25 x 100 - 25%

percentage decrease = original value -new l value / original value x 100

7 0

3 years ago

Using suitable property solve<br> -3/4*2/3+3/4*-5/6

REY [17]

Answer: The answer is -1/8

Step-by-step explanation:

3/4*2/3+3/4*-5/6

3 is cancelled out with 3, 4 with 2, 3 with 6

1/2-5/8

take the L.C.M

4(1)-1(5)/8

4-5/8

=-1/8

3 0

3 years ago

Read 2 more answers

HELP WITH SOLVING SYSTEMS WITH THREE VARIABLES, WILL MEDAL

vodka [1.7K]

Equation 1) -x - y - z = -8
Equation 2) -4x + 4y + 5z = 7
Equation 3) 2x + 2z = 4

Solving for three variables is quite similar to solving for two variables. Just like when solving for two variables, you look for like variables & solve them one-by-one. So, let's get started! :)

Multiply ALL of equation 1 by four.

1) 4(-x - y - z = -8)

Simplify.

1) -4x - 4y - 4z = -32

Both equations 1 & 2 have the same three variables (x, y, z), so, we must look at these equations together.

1) -4x - 4y - 4z = -32
2) -4x + 4y + 5z = 7

Add these equations together, and create a fourth equation.

4) -8x - z = -25

Now, notice how both equations 3 & 4 have the same two variables (x, z).

So, we must look at these equations together.

3) 2x + 2z = 4
4) -8x - z = -25

Multiply ALL of equation 4 by 2.

4) 2(-8x - z = -25)

Simplify.

4) -16x - 2z =-50
3) 2x + 2z = 4

Now, add the equations together, so that we can solve for x.

-14x = -42

Divide both sides by -14.

x = 3

Now, plug in 3 for x into our 3rd equation.

3) 2x + 2z = 4

3) 2(3) + 2z = 4

Simplify.

6 + 2z = 4

Subtract 6 from both sides.

2z = 4 - 6

Simplify.

2z = -2

Divide both sides by 2.

z = -1

Now, plug in -1 for z & 3 for x in our 1st equation.

1) -x - y - z = -8

-(3) - y - (-1) = -8

Simplify.

-3 - y + 1 = -8

Simplify.

-2 - y = -8

Add 2 to both sides.

-y = -8 + 2

Simplify.

-y = -6

Divide both sides by -1.

y = 6

SO :

x = 3, y = 6, z = -1

~Hope I helped!~

5 0

3 years ago

Serena paid $194.99 for a game system and then bought two equally price games. If she spent a total of $284.97, what is the pric

Blizzard [7]

Answer:

44.99

Step-by-step explanation:

284.97(total cost) - 194.99(system cost) = 89.98(money spent on games) / 2(total games) = 44.99 = 44.99 spent per game.

7 0

3 years ago